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A New Acentric Heterometallic Inorganic-organic Hybrid Framework [ZnK_2(m-BDC)_2(H_2O)_2]n: Fluorescent, NLO and Ferroelectric Properties 被引量:3
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作者 薛丽萍 刘月成 +4 位作者 韩云虎 李启彭 田崇斌 林平 杜少武 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第9期1360-1366,共7页
Solvothermal reactions of Zn(NO3)2·6H20 with isophthalic acid in the presence of potassium nitrate lead to an acentric three-dimensional (3D) hereto-metallic inorganic-organic hybrid framework [ZnK2(m-BDC)f... Solvothermal reactions of Zn(NO3)2·6H20 with isophthalic acid in the presence of potassium nitrate lead to an acentric three-dimensional (3D) hereto-metallic inorganic-organic hybrid framework [ZnK2(m-BDC)ffH20)2]n (1, m-H2BDC = benzene-l,3-dicarboxylic acid). The crystal was characterized by elemental analysis, IR spectroscopy, TGA and single-crystal X-ray diffraction analysis. Complex 1 is of orthogonal crystal system, acentric space group Cmc2j with a = 19.764(6), b = 19.948(6), c = 12.039(4) A, V = 4746(3) A3, Z = 4, C32H20019KaZn2, Mr = 995.66, Dc= 1.393 g/cm3, F(000) = 2000 andp = 1.426 mm-1. The final R = 0.0761 and wR = 0.1841. The crystal exhibits remarkable blue luminescence emissions with high quantum yield of 56.02% and displays modest powder SHG efficiency of about 0.7 times that produced by a potassium dihydrogen phosphate (KDP) powder. In addition, it also exhibits potential ferroelectric property. 展开更多
关键词 heterometallic solvothermal synthesis PHOTOLUMINESCENCE ferroelect1
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Heterometallic Trinuclear Ni_2Zn and Ni_2Mn Complexes of Macrocyclic Oxamide: Synthesis and Crystal Structures 被引量:3
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作者 孙亚秋 刘尚远 王菁 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2013年第1期39-44,共6页
Two novel heterometallic trinuclear complexes of macrocyclic oxamide [Mn(NiL)2(HBTC)H2O] (1) and [Zn(NiL)2(HBTC)H2O] (2) (NiL, H2L = 2,3-dioxo-5,6,14,15-dibenzo-1,4,8,12-tetraazacyclo-pentadeca-7,13-dien,... Two novel heterometallic trinuclear complexes of macrocyclic oxamide [Mn(NiL)2(HBTC)H2O] (1) and [Zn(NiL)2(HBTC)H2O] (2) (NiL, H2L = 2,3-dioxo-5,6,14,15-dibenzo-1,4,8,12-tetraazacyclo-pentadeca-7,13-dien, H3BTC = 1,3,5-benzenetricarboxylic acid) have been solvothermally synthesized and structurally characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. For 1, the crystals crystallize in the monoclinic system, space group P21/c with a = 11.3595(5), b = 23.1498(11), c = 17.2558(8) and =101.2530(10)°. For 2, the crystals crystallize in the monoclinic system, space group P21/c with a = 11.5214(8), b = 20.6566(14), c = 18.4126(13) and = 92.6770(10)°. The structures of 1 and 2 have oxamido-bridged trinuclear [NiⅡ2MⅡ] units and consist of two-dimensional supramolecular architectures formed by strong O–H…O intermolecular hydrogen bonds. 展开更多
关键词 macrocyclic oxamide complex solvothermal synthesis heterometallic complex
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Synthesis and Crystal Structure of a Novel Heterometallic Complex with 1,2,4,5-Benzenetetracarboxylic Acid and 1,3,5-Tris(imidazol-1-ylmethyl)-2,4,6-trimethylbenzene 被引量:2
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作者 刘光祥 徐衡 任小明 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2010年第12期1792-1797,共6页
A novel heterometallic complex,[Zn4Ni(OH)2(btec)2(titb)2(H2O)2]·2H2O(1)(H4btec=1,2,4,5-benzenetetracarboxylic acid,titb=1,3,5-tris(imidazol-1-ylmethyl)-2,4,6-trime-thylbenzene),has been hydrothermal... A novel heterometallic complex,[Zn4Ni(OH)2(btec)2(titb)2(H2O)2]·2H2O(1)(H4btec=1,2,4,5-benzenetetracarboxylic acid,titb=1,3,5-tris(imidazol-1-ylmethyl)-2,4,6-trime-thylbenzene),has been hydrothermally prepared and characterized by IR spectroscopy,elemental analysis and single-crystal X-ray diffraction.The crystal is of triclinic system,space group P1 with a=10.817(10),b=11.878(11),c=14.569(14),α=71.762(12),β=76.122(13),γ=71.493(13)°,V=1665(3)3,C62H62N12O22Zn4Ni,Mr=1647.43,Dc=1.643 g/cm3,F(000)=842,μ=1.784 mm-1 and Z=1.The final R=0.0531 and wR=0.0890 for 3545 observed reflections(Ⅰ 2σ(Ⅰ)).In the title complex,the btec ligand acts as a five-dentate bridging ligand to link up zinc and nickel atoms into a lamellar framework,which are further interlinked into a 3-D framework via the titb ligands. 展开更多
关键词 heterometallic complex crystal structure 1 2 4 5-benzenetetracarboxylate imidazole
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Hydrothermal Synthesis and Crystal Structure of a Heterometallic Cu/Cd Complex with H_2dipic(Pyridine-2,6-dicarboxylic Acid) 被引量:1
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作者 XUE Lin CHE Yun-Xia ZHENG Ji-Min 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2006年第10期1250-1254,共5页
A new heterometallic complex {[Cu(pic)2(H2O)2][Cd2(Hdipic)2(H2O)2Cl2]}n (Mr = 1007.73) has been synthesized under hydrothermal condition and characterized by single-crystal X-ray diffraction. It crystallizes... A new heterometallic complex {[Cu(pic)2(H2O)2][Cd2(Hdipic)2(H2O)2Cl2]}n (Mr = 1007.73) has been synthesized under hydrothermal condition and characterized by single-crystal X-ray diffraction. It crystallizes in triclinic, space group PI^- with a = 5.8397(4), b = 9.8664(7), c = 14.1739(10) °A, α= 82.0150(10), β = 80.4540(10), γ= 82.3570(10)°, Z= 1, V= 792.47(10)°A^3, Dc = 2.112 g/cm^3,μ(MoKα) = 2.247 mm^-1, F(000) = 495, the final R = 0.0232 and wR = 0.0644 for 2748 observed reflections (I〉 2σ(I)). In the complex, seven-coordinated·Cd ions form a zigzag chain based on the alternated dinuclear Cd units. The neutral [Cu(pic)2(H2O)2] units are located at the centers of the inter space and fasten to the 1-D chain by hydrogen bonds. 展开更多
关键词 COPPER CADMIUM heterometallic DINUCLEAR HYDROTHERMAL coordination polymer
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A Heterometallic Cu(Ⅰ)-Sr(Ⅱ) Coordination Polymer Based on Isonicotinic Acid Ligand: Synthesis, Crystal Structure, Luminescence and Photocatalytic Performance for Methylene Blue Degradation
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作者 AN Zhe ZHOU Tian 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2019年第4期644-650,共7页
Presented here is a new heterometallic Cu(I)-Sr(Ⅱ) coordination polymer, [Cu(3)Sr_2(isonic)_5 Br_2(H_2O)_3]n·n(H_2O)(1, Hisonic = isonicotinic acid), has been synthesized via the hydrothermal reactions of CuBr, ... Presented here is a new heterometallic Cu(I)-Sr(Ⅱ) coordination polymer, [Cu(3)Sr_2(isonic)_5 Br_2(H_2O)_3]n·n(H_2O)(1, Hisonic = isonicotinic acid), has been synthesized via the hydrothermal reactions of CuBr, Sr(NO_3)_2 and isonicotinic acid. The crystal structure is of triclinic system, space group P1 with a = 7.111(2), b = 14.934(4), c = 18.0255(11) ?, α = 83.137(15), β = 87.155(15), γ = 79.75(2)°, V = 1869.4(8) ?~3, C_(30)H_(29)Br_2Cu(3)N_5O_(14)Sr_2, Mr = 1209.27, Z = 2, Dc = 2.148 g/cm^3, F(000) = 1178, μ = 6.725 mm^(-1), R = 0.0500 and wR = 0.1008 for 4688 observed reflections(I > 2s(I)). Single-crystal X-ray diffraction analysis revealed that compound 1 features a 3 D heterometallic framework stabilized by bifunctional isonic ligands. In addition, the luminescent and photocatalytic properties of compound 1 were also investigated at room temperature. 展开更多
关键词 heterometallic coordination polymer HYDROTHERMAL SYNTHESIS LUMINESCENCE PHOTOCATALYTIC property
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Three Two-dimensional Heterometallic Chalcogenides[TM(tren)][InSbSe_3S](TM = Fe, Co, Mn): Syntheses,Crystal Structures, and Properties
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作者 CHEN Juan DU Cui-Xia +3 位作者 Namila Agula Sagala BAIYIN Menghe 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2019年第1期128-136,5,共10页
Three two-dimensional(2-D) heterometallic chalcogenides [TM(tren)][InSbSe_3S](TM = Fe(1), Co(2), Mn(3); tren = tris(2-aminoethyl)-amine) have been solvothermally synthesized in this paper. Single-crystal X-ray analysi... Three two-dimensional(2-D) heterometallic chalcogenides [TM(tren)][InSbSe_3S](TM = Fe(1), Co(2), Mn(3); tren = tris(2-aminoethyl)-amine) have been solvothermally synthesized in this paper. Single-crystal X-ray analysis indicates that they are isostructural to each other except the different transition metal ions. These compounds contain an unsaturated complex cation [TM(tren)]^(2+), which can be further coordinated by the 2-D [InSbSSe_3]_n^(2n-) anion, resulting in a new neutral organic-decorated heterometallic chalcogenide. These compounds crystallize in monoclinic space group P21/c, with a = 11.768(12), b = 13.884(14), c = 11.095(11) ?, Z = 4, D_c =2.910 Mg·m^(-3), F(000) = 1304, M_r = 707.60 for 1; a = 11.843(9), b = 14.064(10), c = 10.979(8) ?, Z= 4, Dc = 2.875 Mg·m^(-3), F(000) = 1308, M_r = 710.68 for 2; a = 11.969(10), b = 14.191(11), c =11.112(9) ?, Z = 4, D_c = 2.779 Mg·m^(-3), F(000) = 1300, Mr = 706.69 for 3. The maximum and minimum peaks of compounds 1~3 are 6.996 and –2.880 e·?^(-3), 2.242 and –3.066 e·?^(-3), 3.655 and –3.569 e·?^(-3), respectively. These compounds were structurally characterized by powder X-ray diffraction measurement, thermal analysis, infrared spectroscopy and UV-Vis diffuse reflectance spectroscopy. A solid-state UV/Vis reflectance spectroscopy measurement on 1, 2 and 3 confirmed that these compounds are semiconductor materials. 展开更多
关键词 heterometallic CHALCOGENIDES SOLVOTHERMAL synthesis crystal structure
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Synthesis and Crystal Structure of a Heterometallic Trinuclear Ni/Ag/S Compound
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作者 靳美亮 马骁 +6 位作者 谭春红 沈超君 朱启龙 胡胜民 傅瑞标 盛天录 吴新涛 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2012年第1期127-130,共4页
A new tri-nuclear mixed metal thiolate complex [Ag(PPh3)2]2[Ni(edtO2)2] 1 has been synthesized and structurally characterized by single-crystal diffraction.The molecule has a crystallographic inversion centre occu... A new tri-nuclear mixed metal thiolate complex [Ag(PPh3)2]2[Ni(edtO2)2] 1 has been synthesized and structurally characterized by single-crystal diffraction.The molecule has a crystallographic inversion centre occupied in the central Ni(II) atom and the two silver(I) atoms are related by the inversion centre.The unique structural feature is that one of thiolates of each edt ligand has been oxidized to sulfinate from the precursor [Ni(edt)2]2-to the neutral linear trinuclear complex.The crystal structure belongs to the monoclinic system,space group P21/n with a = 13.581(11),b = 12.239(9),c = 22.316(17) ,β = 103.08(2)o,V = 3613(5) 3,Z = 2,Mr = 1571.87,Dc = 1.445 g/cm3,μ = 1.046 mm-1,F(000) = 1604,T = 293(2) K,the final R = 0.0652 and wR = 0.1499 for 6776 observed reflections with I 2σ(I). 展开更多
关键词 heterometallic chalcogenides THIOLATE chair-like crystal structure
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Synthesis and Characterization of a Silver(Ⅰ)-indium(Ⅲ) Heterometallic Metalorganic Framework Based on Nicotinate
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作者 巫立健 李新雄 王瑞虎 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2015年第11期1703-1708,共6页
A heterometallic metal-organic framework, Agln(nicotinate)4.1.5DMF, was obtained from the reaction of nicotinic acid, AgNO3 and In(NO3)3 in DMF. The complex was characterized by elemental analysis, infrared spectr... A heterometallic metal-organic framework, Agln(nicotinate)4.1.5DMF, was obtained from the reaction of nicotinic acid, AgNO3 and In(NO3)3 in DMF. The complex was characterized by elemental analysis, infrared spectrum, thermogravimetric analysis, powder X-ray diffraction and single-crystal X-ray diffraction. Crystal data are: C28.5H26.5N55O9.5Agln, orthorhombic space group/222, a = 10.775(15), b = 11.939(18), c = 13.93(2) A, V= 1792(5) A3, Z = 2, Dc = 1.521 mg/m3,μ = 1.244 mm1, F(000) = 816, the final R = 0.0672 and wR= 0.1812 for 1912 observed reflections with I 〉 2σ(I). Single-crystal X-ray structure analysis reveals that nicotinate bridges In(III) and Ag(I) through carboxylate chelating with In(III) and pyridyl nitrogen atom coordinating to Ag(I), generating a new 2D network consisting of tetrahedral building units of [AgN4]+ and [In(COO)4]-. 展开更多
关键词 INDIUM SILVER heterometallic MOF nicotinic acid crystal structure
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Synthesis and Characterization of a Tetranuclear [Sm_2Co_2] Heterometallic Compound
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作者 杨文博 黄河清 +2 位作者 李忠义 刘瑞斌 张建军 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2012年第7期971-976,共6页
A new tetranuclear square compound (H3O)[Sm2Co2(CDTA)2(DMF)2 (μ4-O) (H2O)6]ClO4 was synthesized through the assembly reaction of Co2+ , Sm3+ and trans-1,2-cclohexylenedinitrilotetraacetic acid (H4CDTA) ... A new tetranuclear square compound (H3O)[Sm2Co2(CDTA)2(DMF)2 (μ4-O) (H2O)6]ClO4 was synthesized through the assembly reaction of Co2+ , Sm3+ and trans-1,2-cclohexylenedinitrilotetraacetic acid (H4CDTA) in aqueous solution. X-ray crystal structural analysis shows that the compound belongs to the monoclinic C2/c space group, with a=27.213(2), b=10.5574(9), c=19.4923(17),β=98.799(1)°, V=5534.1(8)3 , C34H65ClCo2N6O30Sm2 , Mr=1491.93, Dc=1.791g/cm-3 , F(000)=2984,=2.820 mm-1 and Z=4. In the compound, Co2+ is 7-coordianted while Sm3+ is 9-coordinated. With the help of a central O2- and 8 carboxylate oxygen atoms, two Co2+ and two Sm3+ ions are linked into a square with the side length of 3.45 . Magnetic property was investigated. 展开更多
关键词 cluster compounds crystal structure heterometallic
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Syntheses and Crystal Structures of Five Sr^(Ⅱ)-Ln^(Ⅲ)(Ln=Nd,Pr,Er) Heterometallic Coordination Polymers
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作者 CAO Yan-Yuan CHEN Yan-Mei +1 位作者 LIU Wei LI Ya-Hong 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2013年第12期1859-1867,共9页
Five novel SrⅡ-LnⅢ heterometallic coordination polymers based on pyridine-2,6- dicarboxylic acid (H2pda) and imidazole (im), namely, [LnSr(pda)3(H2O)5]-Him·C2H5OH·3H2O (Ln = Nd (1); Pr (2)), ... Five novel SrⅡ-LnⅢ heterometallic coordination polymers based on pyridine-2,6- dicarboxylic acid (H2pda) and imidazole (im), namely, [LnSr(pda)3(H2O)5]-Him·C2H5OH·3H2O (Ln = Nd (1); Pr (2)), [Ln2Sr(pda)6(H2O)5]-4Him·C2H5OH·5H2O (Ln = Nd (3); Pr (4)), and [ErSr(pda)3(H2O)4].Him-3.5H2O (5), have been prepared and structurally characterized. X-ray crystallographic analyses revealed that these complexes display three varieties of l-D chain structures. Several types of hydrogen bonding interactions are found for 1-5, which connect the 1 -D chain structures to form 2-D suoramolecular networks. 展开更多
关键词 heterometallic coordination polymers STRONTIUM LANTHANIDE crystal structure
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A Copper(Ⅱ)-cadmium(Ⅱ) Heterometallic Hexanuclear Complex:[Cd_4Cu_2(pdc)_4(H_2O)_(14)](H_3pdc=3,5-Pyrazoledicarboxylic Acid)
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作者 周馨慧 银秀菊 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2011年第2期180-185,共6页
The title complex 1,[Cd 4 Cu 2 (pdc) 4 (H 2 O) 14 ] (H 3 pdc=3,5-pyrazoledicarboxylic acid),has been solvothermally synthesized and structurally characterized by single-crystal X-ray diffraction.Complex 1 crysta... The title complex 1,[Cd 4 Cu 2 (pdc) 4 (H 2 O) 14 ] (H 3 pdc=3,5-pyrazoledicarboxylic acid),has been solvothermally synthesized and structurally characterized by single-crystal X-ray diffraction.Complex 1 crystallizes in triclinic,space group P1 with a=0.67235(10),b=1.27935(18),c=1.28569(17) nm,α=112.633(2),β=102.971(3),γ=97.089(2)o,V=0.9673(2) nm 3,C 20 H 32 Cd 4 Cu 2 N 8 O 30,M r=1441.22,D c=2.474 g/cm 3,μ(MoKα)=3.356 mm 1,F(000)=698,S=1.003,Z=1,the final R=0.0471 and wR=0.0748 for I 2σ(Ⅰ).In 1,two deprotonated 3,5-pyrazoledicarboxylic acids (pdc 3),one copper(Ⅱ) ion and one cadmium(Ⅱ) ion firstly form a pyrazole-bridged Cu II Cd II dinuclear unit,two of which related by an inversion center are connected by another two cadmium(Ⅱ) ions through chelating carboxylate groups to construct the copper(Ⅱ)-cadmium(Ⅱ) heterometallic hexanuclear complexes.Plenty of hydrogen bond interactions existing in the system further lead to a three-dimensional (3D) supramolecular framework. 展开更多
关键词 3 5-pyrazoledicarboxylic acid heterometallic complex hexanuclear copper(Ⅱ)-cadmium(Ⅱ)
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Synthesis and Crystal Structure of a New Pr(Ⅲ)–K(Ⅰ) Heterometallic Oxalate Coordination Polymer
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作者 洪东风 殷党跃 +1 位作者 王俊儒 代江坤 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第11期1636-1642,共7页
A new 3D heterometallic coordination polymer, namely [K2Pr2(C2O4)4·H2O]n(1), has been successfully synthesized under hydrothermal conditions. X-ray single-crystal diffraction determination reveals that 1 crys... A new 3D heterometallic coordination polymer, namely [K2Pr2(C2O4)4·H2O]n(1), has been successfully synthesized under hydrothermal conditions. X-ray single-crystal diffraction determination reveals that 1 crystallizes in monoclinic system, space group P21/n with a = 12.060(4), b = 8.493(3), c = 15.776(5)(A), β = 93.235(3)°, V = 1613.4(9) A3, Z = 4, Mr = 730.12, Dc = 3.006 Mg/m^3, μ = 6.581 mm-1, F(000) = 1368, the final R = 0.0283 and wR = 0.0866 for 2939 observed reflections with I 〉 2σ(I). Complex 1 features an unusual 3D heterometallic coordination framework, in which oxalates exhibit three different coordination behaviours. Moreover, powder X-ray diffraction and thermal properties for 1 have also been investigated. 展开更多
关键词 heterometallic coordination polymer crystal structure OXALATE
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Heterometallic Mg-Ni-Mg Complex Promoted Hydrosilylation of Alkenes: Catalytic Performance and Intermediates Characterization
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作者 Yanping Cai Shengjie Jiang Xin Xu 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2024年第18期2133-2139,共7页
Background and Originality Content The catalytic hydrosilylation of unsaturated hydrocarbons,facilitated by transition metal(TM),is widely recognized as a proficient technique for the synthesis of high-value organosil... Background and Originality Content The catalytic hydrosilylation of unsaturated hydrocarbons,facilitated by transition metal(TM),is widely recognized as a proficient technique for the synthesis of high-value organosilicon compounds'ti-4l over the past few decades,the most dominant cata.lysts in hydrosilylation processes have been constituted by pre-Ccious metar complexesroceinerecent vears omore sustainabile earth-abundant metal catalysts have received increased attentionj2-14l The classcal mechanism of transition metal-catalyzed hydrosilylation is generally accomplished through a series of fundamental processes(Scheme 1a),including(i)coordination and oxidative addition of Si-H bond to a low-valent metal center to form e.g.,o-complex or silyl metal hydride;(ii)insertion of.C-C multipe bonds intometal-hdridelsior metal-silicon bond;jiol and(ii)reductive elimination that forwards the hydrosilylated product with Markovnikov or anti-Markovnikov selectivity. 展开更多
关键词 heterometallic complex Cooperative effect HYDROSILYLATION Magnesium Nickel hydride
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Heterometallic Ti-Zr oxo nanocluster photoresists for advanced lithography
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作者 Yang Qiao Guangyue Shi +5 位作者 Ou Zhang You Li Michaela Vockenhuber Yasin Ekinci Feng Luo Lei Zhang 《Science China Materials》 SCIE EI CAS CSCD 2024年第10期3132-3141,共10页
Extreme ultraviolet lithography(EUVL)and electron beam lithography(EBL)are considered to be crucial lithography techniques utilized in the fabrication of nanoscale semiconductor devices.However,the industry currently ... Extreme ultraviolet lithography(EUVL)and electron beam lithography(EBL)are considered to be crucial lithography techniques utilized in the fabrication of nanoscale semiconductor devices.However,the industry currently faces a scarcity of EUV photoresists that meet the increasingly challenging standards in terms of resolution,sensitivity and roughness.Metal oxo nanoclusters have garnered significant interest in the field of EUV photoresist due to their relatively stronger absorption cross-section for extreme ultraviolet light and lower dimensions.In this study,we utilize a heterometallic nanocluster strategy by a combination of titanium and zirconium metals to investigate their solubility,assess the suitability of various developers,and evaluate their performance in electron-beam and EUVL,as well as study their etch resistance for pattern transfer.We demonstrate that R-4 is able to get a critical dimension(CD)of 25 nm at low doses under EBL,as well as 50 nm resolution at EUVL with a remarkable sensitivity of 19.7 mJ cm−2.This study offers an efficient heterometallic method for optimizing the lithographic performance of metal oxo nanocluster photoresists,which can benefit the development of commercially viable next-generation EUV photoresists. 展开更多
关键词 heterometallic nanocluster PHOTORESISTS electron beam lithography extreme ultraviolet lithography
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Parallelogram 3d-4f-5d heterometallic clusters based on trilacunary tungstoantimonates with excellent proton conductivity
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作者 Haiying Wang Han Xu +4 位作者 Chaolong Chen Yingjie Zhu Yikang Zhang Dongdi Zhang Jingyang Niu 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第3期528-531,共4页
Two 3d-4f-5d heterometallic cluster-containing polyoxometalates,formulated as Na_(22){(SbW_(9)O_(33))_(4)[La_(3)W_(6)MO_(18)(H_(2)O)_(8)(CH_(3)COO)_(4)]_(2)}·nH_(2)O(abbreviated as La_(6)M_(2),M=Co/Mn)were synthe... Two 3d-4f-5d heterometallic cluster-containing polyoxometalates,formulated as Na_(22){(SbW_(9)O_(33))_(4)[La_(3)W_(6)MO_(18)(H_(2)O)_(8)(CH_(3)COO)_(4)]_(2)}·nH_(2)O(abbreviated as La_(6)M_(2),M=Co/Mn)were synthesized and structurally characterized.Single-crystal X-ray diffraction analyses reveal that the polyanions of La_(6)Co_(2)and La_(6)Mn_(2)consist of the uncommon 3d-4f-5d clusters{La_(6)W_(12)Co_(2)}and{La_(6)W_(12)Mn_(2)},which are encapsulated by four trilacunary Keggin tungstoantimonates to form the parallelogram-shaped title compounds.Additionally,the polyanions can be extended into a two-dimensional(2D)frame by the linkage of peripheral Na+ions.The inner space of the 2D layer was filled with water molecules and thus an H-bonded network was formed,which is expected to exhibit a fascinating proton conductivity.The study of water-assisted proton conduction demonstrated that La_(6)Co_(2)and La_(6)Mn_(2)were temperature-and humiditydependent proton conductors,respectively,and the proton conductivities could reach 1.3×10^(-2)and 2.3×10^(-2)S/cm at 65℃and 90%RH conditions. 展开更多
关键词 POLYOXOMETALATE PARALLELOGRAM heterometallic 3d-4f-5d cluster Proton conductivity
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Designed assembly of heterometallic cluster organic frameworks based on Th_6 cluster
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作者 Xianghe Kong Xiaoli Liao +4 位作者 Zhenkun Huang Lei Mei Hongqing Wang Kongqiu Hu Weiqun Shi 《Chinese Chemical Letters》 SCIE CAS 2024年第11期329-333,共5页
Four novel compounds based on hexanuclear thorium cluster were synthesized and characterized.Compound 1[Th_(6)(HPy C)_(8)(HCOO)_(4)]is formed by replacing formate ligands of preassembled thorium cluster[Th_(6)O_(4)(OH... Four novel compounds based on hexanuclear thorium cluster were synthesized and characterized.Compound 1[Th_(6)(HPy C)_(8)(HCOO)_(4)]is formed by replacing formate ligands of preassembled thorium cluster[Th_(6)O_(4)(OH)_(4)(H_(2)O)_(6)(HCOO)_(12)]with eight H_(2)Py C(4-pyrazolecarboxylic acid)under solvothermal conditions.Each of the HPy C^(-)ligands is coordinated with one Cu^(2+)to form the(4,8)-connected scu-net structure of compound 2[(Cu Cl_(2))_(2)Th_(6)(HPy C)_8(HCOO)_(4)].In compound 3[(Cu Cl_(2))_(2)Th_(6)(HPy C)_(10)(HCOO)_(4)],ten of the formate ligands of preassembled Th_(6)cluster are replaced by HPy C^(-)ligands.Compared with compound 2,the two extra HPy C^(-)ligands in the equatorial plane of the Th_(6)cluster in compound 3 are not further connected to copper ions.Therefore,the topology structure of compound 3 is same with that of compound 2.Compound 4[(Cu_(3)Cl_(2))(Cu Cl_(2))Th_(6)(Py C)_(3)(HPy C)_(4)(HCOO)_(5)]contains three kinds of metal nodes,Th_(6)cluster,Cu_(3)cluster and mononuclear Cu^(2+),and exhibits a novel(5,7)-connected net structure,which was first discovered in actinide MOFs.Furthermore,considering the satisfactory stability of compound 4 and its unsaturated metal nodes and Lewis acid sites,the catalysis of cycloaddition of CO_(2)was further studied.We found that this thorium-copper heterometallic cluster organic framework can be used as a potential actinide functional material for catalyzing the efficient CO_(2)conversion to value-added products. 展开更多
关键词 Actinide Hexanuclear thorium cluster heterometallic organic frameworks Coordination chemistry Catalytic cycloaddition
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Synthesis of Heterometallic Rare Earth(Ⅲ)-Cobalt(Ⅱ)Complexes and Their Application in Alternating Copolymerization of Cyclohexene Oxide and Carbon Dioxide 被引量:3
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作者 Yanping Song Kuan Yin +5 位作者 Yongjie Chen Bei Zhao Yong Zhang Xuehua Zhu Dan Yuan Yingming Yao 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2023年第7期805-813,共9页
Comprehensive Summary Four heterometallic rare earth(Ⅲ)-cobalt(Ⅱ)complexes(rare earth=Y(1),Sm(2),Nd(3),La(4))stabilized by an o-phenylenediamine-bridged tris(phenolato)ligand(L)have been synthesized and characterize... Comprehensive Summary Four heterometallic rare earth(Ⅲ)-cobalt(Ⅱ)complexes(rare earth=Y(1),Sm(2),Nd(3),La(4))stabilized by an o-phenylenediamine-bridged tris(phenolato)ligand(L)have been synthesized and characterized.In these tetranuclear complexes,one polydentate L coordinates to one rare earth(Ⅲ)ion,and one cobalt(Ⅱ)ion,respectively,while two rare earth ions are bridged by four acetate groups.These complexes were applied in the copolymerization of cyclohexene oxide and CO_(2),which showed good activity(TON up to 440)and high poly(cyclohexene carbonate)selectivity(>99%).Kinetic studies determined the equation as rate=k[CHO]1[CO_(2)]0[initiator]1,which proves a first-order dependence on initiator concentrations and implies a synergistic mechanism with rare earth and cobalt ions cooperating in epoxide ring-opening and chain propagation. 展开更多
关键词 Carbon dioxide Rare earth metal heterometallic complexes Poly(cyclohexene carbonate) Crystal structure
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Two temperature-dependent 2D heterometallic Cd(Ⅱ)-Dy(Ⅲ)coordination polymers exhibiting slow magnetic relaxation and luminescence properties 被引量:2
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作者 Zhongyi Li Jiahui Bu +3 位作者 Ran Zhang Chi Zhang Dongqing Wu Bin Zhai 《Journal of Rare Earths》 SCIE EI CAS CSCD 2023年第4期613-620,共8页
Two unique two-dimensional(2D)Cd(Ⅱ)-Dy(Ⅲ)heterometallic coordination polymers,{[DyCd(HPMA)(PMA)_(2)(H_(2)O)_(4)]·2H_(2)O}_n(1)and[DyCd(PAA)(PMA)_(2)(H_(2)O)_(3)]_(n)(2,PAA^(-)=phenylacetate),were prepared succe... Two unique two-dimensional(2D)Cd(Ⅱ)-Dy(Ⅲ)heterometallic coordination polymers,{[DyCd(HPMA)(PMA)_(2)(H_(2)O)_(4)]·2H_(2)O}_n(1)and[DyCd(PAA)(PMA)_(2)(H_(2)O)_(3)]_(n)(2,PAA^(-)=phenylacetate),were prepared successfully based on the phenylmalonic acid(H_(2)PMA).The construction of two polymers is sensitive to the reaction temperature and can be synthesized directionally at room temperature and 90℃,respectively.Complexes 1 and 2 display 2D layer structures that include dinuclear[Dy_(2)]cluster node and Dy(Ⅲ)-based 1D zigzag chain motif severally.The Dy(Ⅲ)-based units in two structures both are spaced well with the adjacent ones by the diamagnetic Cd(Ⅱ)-based moieties.The magnetic studies reveal that 1 and 2both display slow magnetic relaxation with temperature-dependent relaxation peaks producing an effective energy barrier(Δτ)of 74.5 and 32.1 K,separately.Furthermore,the solid-state photophysical properties of 1 and 2 show strong characteristic luminescent emissions of Dy(Ⅲ)ion in the visible region. 展开更多
关键词 heterometallic polymers Cd(Ⅱ)-Dy(Ⅲ)ions Slow magnetic relaxation LUMINESCENCE Bifunctional material Rare earths
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Implanting Built-In Electric Field in Heterometallic Phthalocyanine Covalent Organic Frameworks for Light-Assisted CO_(2)Electroreduction 被引量:1
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作者 Xi Tian Xin Huang +9 位作者 Jing-Wen Shi Jie Zhou Can Guo Rui Wang Yi-Rong Wang Meng Lu Qi Li Yifa Chen Shun-Li Li Ya-Qian Lan 《CCS Chemistry》 CSCD 2023年第11期2557-2566,共10页
A strategy that enables introducing bimetallic active sites is desired for the exploration of light-sensitive covalent organic framework(COF)-based electrocatalysts in light-assisted CO_(2)electroreduction.Here,salphe... A strategy that enables introducing bimetallic active sites is desired for the exploration of light-sensitive covalent organic framework(COF)-based electrocatalysts in light-assisted CO_(2)electroreduction.Here,salphen-pockets have been implanted into phthalocyanine(Pc)-based COFs through the elaborate design of structural struts;the produced NiPc-DFP-M COFs(M=Ni and Co)possess the advantages of controllable bimetallic centers with different coordination environments,outstanding light sensitivity,and built-in electric-field effects that can be successfully applied in light-assisted CO_(2)electroreduction.Notably,the optimal heterometallic NiPc-DFP-Co COF presents a∼100%Faradic efficiency for CO formation(FECO)in a wide potential range of−0.7 to−1.1 V and∼70%energy efficiency(−0.7 V)under light-irradiation,which is superior to mono-and homometallic COFs and under dark conditions.The high performance can be ascribed to the synergistic effect of the NiPc and Co-salphen pockets that can largely reduce the rate-determining energy-barrier and enhance the electron density to boost the light-assisted activity as supported by density functional theory calculations.A series of bimetallic Pc-based NiPc-DFP-M COF(M=Ni and Co)with integrated salphen-pockets and NiPc units have been synthesized and successfully applied in efficient light-assisted CO_(2)electroreduction. 展开更多
关键词 built-in electric field heterometallic phthalocyanine light assisted CO_(2)electroreduction
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Lead-free bilayer heterometallic halide perovskite with reversible phase transition and photoluminescence properties
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作者 Qiangqiang Jia Ting Shao +3 位作者 Liang Tong Changyuan Su Dawei Fu Haifeng Lu 《Chinese Chemical Letters》 SCIE CAS CSCD 2023年第4期590-594,共5页
The layered heterometallic halide perovskites, as a newly explored material, have attracted great scientific attention. As one of the representatives of perovskite, lead-free or lead-substituted perovskite materials a... The layered heterometallic halide perovskites, as a newly explored material, have attracted great scientific attention. As one of the representatives of perovskite, lead-free or lead-substituted perovskite materials are widely applied in photovoltaic, sensors, catalysis, detectors and other fields. Therefore, it is urgent to carry out more systematic exploration and expand applicable preresearch, so as to make more interesting discoveries in this new hot spot. As an interesting candidate, heterometallic compounds will introduce more structural adjustability and novel physical properties, which is the main feature to be selected as the research hotspot. Here, we reported a lead-free bilayer heterometallic Ruddlesden-Popper(RP) type perovskite, [(MACH)_(2)CsAgBiBr_(7)](MACH = cyclohexanemethylamine), which possesses a reversible phase transition at 379.6 K/375.1 K during heating-cooling cycle. Besides, it exhibits reddish-brown light emission under 365 nm, meanwhile, CIE chromaticity coordinate is(0.32, 0.45) on the yellow side and correlated color temperature is about 6000 K. Moreover, both the experimental data and theoretical calculation results suggest that [(MACH)_(2)CsAgBiBr_(7)] shows indirect semiconducting characteristics. In summary, this work will inspire the design of lead-free heterometallic perovskite materials for the application of sensors and light-emitting diodes(LEDs) fields. 展开更多
关键词 LEAD-FREE heterometallic PEROVSKITE Phase transition Photoluminescence
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