期刊文献+
共找到444篇文章
< 1 2 23 >
每页显示 20 50 100
Synthesis and Crystal Structure of Complex of Zinc(Ⅱ) with Schiff Base {Zn[CH_3O(O)-C_6H_3CH_3=NN=C(S)NH_2](DMF)}_2 被引量:3
1
作者 崔学桂 胡清萍 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1994年第5期340-342,共3页
The title complex is a new binuclear Zn(Ⅱ) with chelate ligand of Schiff base containing S and N atom.The complex crystallizes in the orthorhombicspace group Pccn,with a=12.338(9),b=16.666(8),c=17.503(6),V=3599(6),Mr... The title complex is a new binuclear Zn(Ⅱ) with chelate ligand of Schiff base containing S and N atom.The complex crystallizes in the orthorhombicspace group Pccn,with a=12.338(9),b=16.666(8),c=17.503(6),V=3599(6),Mr=723.52,Z=4,Dx=1.34 g/cm3,μ=15.22 cm-1,F(000)=1488.The structure was solved by direct methods and the final R=0.078.The crystal consists of discrete molecules with symmetric center at the center of the fourmembered ring consisting of two Zn atoms and two O atoms. 展开更多
关键词 schiff base Zinc complex synthesis crystal structure
下载PDF
Syntheses, Crystal Structures and Antibacterial Activities of Cobalt(Ⅱ) and Manganese(Ⅱ) Complexes with Schiff Base Ligand Derived from Tryptamine
2
作者 刘超 牛俊峰 +2 位作者 李阳 徐基贵 刘新华 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2016年第7期1002-1010,共9页
Two new mononuclear complexes, namely [Co(L)2](1) and [Mn(L)2](2)(HL = N-(3-methylsalicylidene)tryptamine), have been synthesized by the reactions of the ligand with cobalt acetate or manganese acetate in ... Two new mononuclear complexes, namely [Co(L)2](1) and [Mn(L)2](2)(HL = N-(3-methylsalicylidene)tryptamine), have been synthesized by the reactions of the ligand with cobalt acetate or manganese acetate in anhydrous ethanol. The crystal structures of the complexes were characterized by IR spectrum, elemental analysis, PXRD and single-crystal X-ray diffraction analysis. Complex 1 crystallizes in monoclinic, space group C2/c, with a = 23.146(2), b = 9.4864(10), c = 13.9261(15)A, β = 102.898(2)°, V = 2980.6(5) ?3, Z = 4, Dc = 1.367 g/cm3, F(000) = 1284 and μ = 0.616 mm^-1. Complex 2 crystallizes in monoclinic, space group P21/n, with a = 14.807(11), b = 13.118(10), c = 16.663(13) A, β = 111.237(14)°, V = 3017(4) A^3, Z = 4, Dc = 1.342 g/cm^3, F(000) = 1276 and μ = 0.477 mm-1. The units of complex 1 are linked by intermolecular N–H…π hydrogen bonds into infinite 1D chains, which are further extended into a 3D supramolecular structure by a series of π···π stacking interactions. The units of complex 2 are linked by intermolecular N–H…π hydrogen bonds and C–H…π hydrogen bonds into an infinite 3D supramolecular structure. Meanwhile, the antibacterial activities of the ligand and its complexes have been tested against four kinds of bacteria. The results show that the three compounds all have excellent antibacterial activities and that 1 and 2 possess stronger inhibiting effects against the bacteria than the Schiff base. 展开更多
关键词 antibacterial activity crystal structure schiff base Co(ⅱ complex Mn(ⅱ
下载PDF
Syntheses, Crystal Structures and Antibacterial Activities of Schiff Base Ligand and Its Nickel(Ⅱ) Complex 被引量:5
3
作者 李斐然 张欣 +2 位作者 王东东 薛志娜 马莺珂 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第9期1367-1374,共8页
A complex [NIL2] was synthesized, in which L, or to be exact, a Schiff base ligand (HL), was derived from the condensation of 1-phenyl-3-methyl-4-phenylacetyl-5-pyrazolone (PMPAP) with L-phenylalanine methyl ester... A complex [NIL2] was synthesized, in which L, or to be exact, a Schiff base ligand (HL), was derived from the condensation of 1-phenyl-3-methyl-4-phenylacetyl-5-pyrazolone (PMPAP) with L-phenylalanine methyl ester. They were characterized by IR and single-crystal X-ray diffraction. Green block crystals of both ligand and its complex were grown at room temperature. The ligand, which consists of two individual fragments, crystalizes in the P1 space group (a = 5.6268(5), b = 10.6892(11) and c = 19.4869(18) A). The complex crystalizes in the P21 space group (a -- 21.4076(18), b = 9.4792(8) and c = 25.287(2) A), which consists of a nickel six-coordinated compound. Every fragment is a distorted octahedron with four oxygen and two nitrogen atoms. The Schiff base ligand (HL) and its complex have been tested in vitro to evaluate their antibacterial activity against bacteria Escherichia Coli and Bacillus subtilis. It is found that the complex has higher activity than the corresponding free Schiff base ligand (HL) against the same bacterial. 展开更多
关键词 schiff base complex crystal structure antibacterial activity
下载PDF
Synthesis and Crystal Structure of an Azide Bridged Binuclear Zinc(Ⅱ) Dimer Containing Taurine Schiff Base [Zn_2(C_8H_9N_2O_3S)_2·(N_3)_2·(H_2O)_2]_2·_2H_2O 被引量:3
4
作者 JIANG Yi-Min LI Jia-Ming +1 位作者 XIE Fu-Qing WANG Yan-Fei 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2006年第7期767-770,共4页
The title complex [Zn2L2(N3)2(H2O)2]·2H2O (L = N-(2-pyridylmethylidene) taurine) has been synthesized in a methanol-water solution. The crystal belongs to monoclinic, space group P2 1/C with a = 15.8064... The title complex [Zn2L2(N3)2(H2O)2]·2H2O (L = N-(2-pyridylmethylidene) taurine) has been synthesized in a methanol-water solution. The crystal belongs to monoclinic, space group P2 1/C with a = 15.8064(10), b = 10.5015(5), c = 17.3193(11) ,A, β= 111.314(2)°, V = 2678.2 (3) ,A ^3 C16H26N10O10S2Zn2, Mr = 713.33, Z = 4, DC = 1.769 g/cm^3, μ = 2.017 mm^-1 and F(000) = 1456. The asymmetric unit consists of two half-molecules of the complex and two water molecules. Four N and two O atoms form the coordination environment of each Zn atom, resulting in a distorted octahedral configuration. The two halves of each independent dimer are related by a crystallographic inversion centre, which lies at the centre of the ring formed by two Zn atoms and the coordinating atoms of the two azide anions. The average separation of Zn(Ⅱ)...Zn(Ⅱ) is 3.322 A. The molecules are linked by O-H...O hydrogen bonds, generating an interesting zigzag infinite chain structure in the ac plane. 展开更多
关键词 binuclear zinc complex N-(2-pyridylmethylidene)-taurine schiff base bridging azide crystal structure
下载PDF
Synthesis and Crystal Structure of a Novel Dinuclear Copper(Ⅱ) Complex Containing Benzimidazole Schiff Base Ligand
5
作者 刘家成 陈立伟 +2 位作者 宋雪艳 洪慧琴 楚朝霞 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2011年第5期764-767,共4页
A novel dinuclear copper(Ⅱ) complex [CuL(NO3)]2·2MeOH was obtained by the coordination reaction of Cu(NO3)2·3H2O with ligand HL (HL=N-(methyl-2-benzimidazol- methylidene)-2-hydroxyaniline). The si... A novel dinuclear copper(Ⅱ) complex [CuL(NO3)]2·2MeOH was obtained by the coordination reaction of Cu(NO3)2·3H2O with ligand HL (HL=N-(methyl-2-benzimidazol- methylidene)-2-hydroxyaniline). The single-crystal X-ray analysis has revealed that the complex crystallizes in triclinic, space group P with a=9.535(3), b=10.009(3), c=10.666(4) , α=104.303(4), β=100.105(4), γ=115.917(4)o, V=839.0(5) 3, C16H16CuN4O5, Mr=407.87, Z=2, Dc=1.614 g/cm3, F(000)=418, μ=1.338 mm-1, R=0.0543 and wR=0.0980. The basic dinuclear copper(Ⅱ) complex units [CuL(NO3)]2 are formed by NO3- as co-bridging ligands and L as NNO tridentate chelate coordinating to the copper ions. The ladder-like one-dimensional chain motifs are formed by O…H-O and O…H-N hydrogen bonds from methanol molecules connecting the dinuclear copper(Ⅱ) units. 展开更多
关键词 BENZIMIDAZOLE schiff base dinuclear copper(ⅱ complex crystal structure
下载PDF
Synthesis and Crystal Structure of a New 2D O-bridged Copper(Ⅱ) Coordination Polymer Constructed from Sulfonate-derived Schiff Base 被引量:1
6
作者 欧阳淼 李家明 +3 位作者 蒋毅民 刘旭辉 张晖英 廖蓓玲 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2015年第2期299-305,共7页
A new chain-like coordination polymer, namely, [CuL]n (1, Na2L = 2-[(2-hydroxy- benzylidene)-amino]-benzenesulfonic acid sodium salt), has been synthesized and characterized by single-crystal X-ray diffraction, IR... A new chain-like coordination polymer, namely, [CuL]n (1, Na2L = 2-[(2-hydroxy- benzylidene)-amino]-benzenesulfonic acid sodium salt), has been synthesized and characterized by single-crystal X-ray diffraction, IR spectroscopy and elemental analysis. Complex 1 crystallizes in monoclinic system, space group P21/c with a = 9.2296(16), b = 10.4754(18), c = 12.200(2) A, β = 102.392(2)°, V = 1152.0(3)A3, CI3H9CuNOaN, Mr = 338.83, Dc = 1.953 g/cm3, Z = 4, F(000) = 684, p = 2.089 mm-1, the final R = 0.0376 and wR = 0.0956. X-ray diffraction analyses indicate that 1 displays a square-pyramidal metal center with NO4 donor sets. The sulfonate-derived Schiff base serves as a common N,O,O'-tridentate and a unique O-bridged ligand connecting the metals. Dinuclear copper complexes serve as secondary building blocks (SBUs) to construct an unusual 2D coordination network. In the crystal, the components form a stable 3D supramolecular architecture by C-H...O interactions and to-stacking 展开更多
关键词 sulfonate-derived schiff base copper(II) complex synthesis crystal structure
下载PDF
Synthesis and Crystal Structure of a Zinc(II) Complex Salt with the Schiff Base of Picolinaldehyde N-oxide and Semicarbazone 被引量:5
7
作者 YU Qing ZHU Li-Gang BIAN He-Dong DENG Ji-Hua YANG Xiao-E GUO Gui-Quan LIANG Hong 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第11期1271-1275,共5页
The title zinc(Ⅱ) complex salt [Zn(H2O)6](ClO4)2-(PNOS)4, where PNOS is derived from picolinaldehyde N-oxide with semicarbazone, has been prepared and structurally characterized by X-ray single-crystal analys... The title zinc(Ⅱ) complex salt [Zn(H2O)6](ClO4)2-(PNOS)4, where PNOS is derived from picolinaldehyde N-oxide with semicarbazone, has been prepared and structurally characterized by X-ray single-crystal analysis. It crystallizes in triclinic, space group PI with a = 7.529(3), b = 10.206(4), c = 14.678(6)A, a = 86.293(6), β= 87.686(7), γ= 81.382(6)°, C28H44Cl2N16O22Zn, Mr = 1093.06, V = 1112.3(8) ,A^3 Z = 1, Dc = 1.632 g/cm^3, S = 1.089, μ(MoKa) = 0.773 mm^-1, F(000) = 564, the final R = 0.0438 and wR = 0.1076 for 3888 independent reflections with Rint = 0.0224. The crystal structure possesses a [Zn(H2O)6]^2+ cation, two ClO4^- anions and four PNOSs. In the crystal structure, Zn^2+ cation is located at the symcenter and coordinated by six water molecules. In [Zn(H2O)6]^2+, an elongate octahedral complex cation, the average Zn-O bond length is 2.087(2) A. There exist a lot of H bonds in the structure, linking the cation [Zn(H2O)6]^2+, anion ClO4^- and PNOS to form a 3D network. 展开更多
关键词 zinc(ⅱ complex salt picolinaldehyde N-oxide SEMICARBAZONE crystal structure schiff base
下载PDF
Syntheses, Characterizations, Crystal Structures and Antibacterial Activities of Two Zinc(II) Complexes with a Schiff Base Derived from o-Vanillin and p-Toluidine 被引量:3
8
作者 余玉叶 赵国良 温一航 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第12期1395-1402,共8页
Two new zinc(Ⅱ) complexes, [Zn2L2Ch].2[ZnL(CH3OH)Cl2] 1 and [ZnL2(NO3)2] 2, were synthesized by reacting ZnX2.nH2O (X = Cl^-, NO3^-) and a Schiff base ligand 2-[(4-methylphenylimino)methyl]-6-methoxyphenol ... Two new zinc(Ⅱ) complexes, [Zn2L2Ch].2[ZnL(CH3OH)Cl2] 1 and [ZnL2(NO3)2] 2, were synthesized by reacting ZnX2.nH2O (X = Cl^-, NO3^-) and a Schiff base ligand 2-[(4-methylphenylimino)methyl]-6-methoxyphenol (C15HIsNO2, L) which was obtained by the condensation of o-vanillin (2-hydroxy-3-methoxybenzaldehyde) with p-toluidine. Both 1 and 2 were characterized by single-crystal X-ray diffraction technique, elemental analysis, molar conductance, FT-IR, UV-Vis, IH-NMR spectra and thermogravimetrie analysis. The Schiff base ligand and its zinc(Ⅱ) complexes have been tested in vitro to evaluate their antibacterial activity against bacteria, viz., Escherichia Coli, Staphylococcus aureus and Bacillus Subtilis. The results show that these complexes have higher activity than the corresponding free Schiff base ligand against the same bacteria. 展开更多
关键词 O-VANILLIN P-TOLUIDINE schiff base zinc(ⅱ complex crystal structure antibacterial activities
下载PDF
Synthesis and Crystal Structure of a Dinuclear Cu(II) Complex with Tridentate Schiff Base and Azido Bridge 被引量:1
9
作者 LINHong FENGYunLong GAOShan 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第4期375-378,共4页
A new dinuclear copper(II) complex ([Cu(C12H17N2O)(N3)]2, C24H34Cu2N10O2) has been synthesized and characterized by X-ray structure determination. It crystallizes in the monoclinic system, space group P21/c with a =... A new dinuclear copper(II) complex ([Cu(C12H17N2O)(N3)]2, C24H34Cu2N10O2) has been synthesized and characterized by X-ray structure determination. It crystallizes in the monoclinic system, space group P21/c with a = 18.529(4), b = 10.933(2), c = 14.534(3) ?, β = 111.07(3)°, V = 2748(1) ?3, Z = 4, Mr = 621.69, F(000) = 1288, Dc = 1.503 g/cm3 and μ(MoKα) = 1.590 mm?1. The structure was refined to R = 0.0647 and wR = 0.1846 for 4406 observed reflections (I > 2σ(I)). The asymmetric unit comprises two halfmolecules. The complex is a centrosymmetric dimmer in which the copper atoms are penta-coordinated by three coordination atoms from the corresponding tridentate Schiff base ligand and two bridging azide anions. The Cu(II)…Cu(II) average distance is 3.350(1) ?. 展开更多
关键词 dimethylamino-1-propylamine SALICYLALDEHYDE schiff base Cu(II) complex crystal structure bridging azide
下载PDF
Synthesis and Crystal Structure of a Co(II) Complex with Schiff Base and Imidazole Ligand 被引量:1
10
作者 WU Lian-Bin HU Zi-Qiang LAI Guo-Qiao 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2006年第5期567-571,共5页
The title compound, [Co(C3H4N2)2(C22H18N2O4)]·5H2O (Mr = 659.56), has been prepared and its crystal structure was determined by X-ray diffraction method. The crystal belongs to monoclinic, space group P21/n... The title compound, [Co(C3H4N2)2(C22H18N2O4)]·5H2O (Mr = 659.56), has been prepared and its crystal structure was determined by X-ray diffraction method. The crystal belongs to monoclinic, space group P21/n, a = 9.6808(2), b = 26.7204(5), c = 12.7993(3) A, β = 100.9340(10)°, V= 3250.75(12) A^3, Z = 4, Dc = 1.348 g/cm^3,μ = 0.586 mm^-1, F(000) = 1380, S = 1.131, R = 0.0689 and wR = 0.1883 for 4782 observed reflections (Ⅰ 〉 2σ(Ⅰ)). The title crystal consists of Co(Ⅱ) complex and lattice water molecules. The Co(Ⅱ) complex assumes a distorted octahedral coordination geometry, formed by one Schiff base dianion phenylenediamine-3-methoxysali-cylaldehyde and two imidazole ligands. The π-π stacking interaction occurs between nearly parallel benzene rings of the neighboring complexes. 展开更多
关键词 cobalt(ⅱ complex schiff base crystal structure π-π stacking
下载PDF
Synthesis and Crystal Structure of a New Nickel(II) Complex with Unsymmetric Quadridentate Schiff Base Containing Oxime 被引量:1
11
作者 ZHANGGuo-Juan FENGYun-Long GAOShan 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第4期454-456,共3页
The title complex, C18H15N3NiO3, has been prepared and characterized by X-ray diffraction analysis. It crystallizes in the monoclinic system, space group Cc with a = 10.939(2), b = 22.909(5), c = 6.907(1) ?, β = 11... The title complex, C18H15N3NiO3, has been prepared and characterized by X-ray diffraction analysis. It crystallizes in the monoclinic system, space group Cc with a = 10.939(2), b = 22.909(5), c = 6.907(1) ?, β = 116.75(3)°, V = 1545.7(5) ?, Z = 4, Mr = 380.04, F(000) = 784, Dc = 1.633 g/cm3 and μ(MoKα) = 1.279 mm–1. The structure was refined to R = 0.0472 and wR = 0.0893 for 2571 observed reflections with I > 2σ(I). The absolute structure Flack parameter X is 0.01(2). In this crystal structure, strong face-to-face π-π stacking interactions between adjacent molecules lead to a one-dimensional chain structure. 展开更多
关键词 nickel(II) complex schiff base OXIME crystal structure π-π stacking interaction
下载PDF
Syntheses and Crystal Structures of Two VO(IV) Schiff Base Complexes with Oxyammonia Ligand 被引量:1
12
作者 LILian-Zhi XUTao WANGDa-Qi NIUMei-Ju JIHai-Wei 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2004年第8期865-869,共5页
Two novel VO(IV) Schiff base complexes, VO(SALHA)2[SALHA: salicyaldehyde- oxyammonia] and VO(o-VANHA)2 [o-VANHA: o-vanillin-oxyammonia], have been synthesized with salicyaldehyde or o-vanilline, hydroxylammonium chlor... Two novel VO(IV) Schiff base complexes, VO(SALHA)2[SALHA: salicyaldehyde- oxyammonia] and VO(o-VANHA)2 [o-VANHA: o-vanillin-oxyammonia], have been synthesized with salicyaldehyde or o-vanilline, hydroxylammonium chloride and vanadyl sulfate in absolute methanol, and their crystal structures were determined by single-crystal X-ray diffraction. The vanadium(IV) centers in both complexes are five-coordinate in a distorted square pyramidal geometry. VO(SALHA)2 (C14H12N2O5V, Mr = 339.20) crystallizes in the monoclinic system, space group P21/n with a = 14.716(9), b = 7.175(5), c = 14.716(9) ? b = 113.130(7), V = 1428.8(15) 3, Z = 4, Dc = 1.577 g/cm3, l = 0.71073 ? m(MoKa) = 0.720 mm-1, F(000) = 692, the final R = 0.0466 and wR = 0.0829 for 1561 observed reflections (I > 2s(I)). VO(o-VANHA)2 (C16H16N2O7V, Mr = 399.25) is of monoclinic, space group P21/n with a = 11.386(12), b = 10.405(10), c = 14.627(15) , b = 93.654(19), V = 1729(3) 3, Z = 4, Dc = 1.533 g/cm3, l = 0.71073 , m(MoKa) = 0.615 mm-1, F(000) = 820, the final R = 0.0513 and wR = 0.1129 for 1235 observed reflections (I > 2s(I)). 展开更多
关键词 vanadium complex schiff base crystal structure
下载PDF
Two Cobalt(II) Complexes Derived from the Hydrolysis Product of Di-Schiff Base Ligand N,N'-Bis-(1-benzimidazo-2-yl-ethylidene)-ethane-1,2-diamine:Preparation,Characterization and Crystal Structure of the 6-Coordinate Species [CoL_2]X·H_2O (X = ClO_4^-, N 被引量:1
13
作者 夏昌坤 吴小园 +2 位作者 吴鼎铭 蒋晓瑜 卢灿忠 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2008年第7期805-811,共7页
The reactions of Co(C1O4)2·6H2O and Co(NO3)2.6H2O with the di-Schiff base ligand N,N'-bis-(1-benzimidazo-2-yl-ethylidene)-ethane-1,2-diamine (LA) in ethanol have been investigated. The reactions of LA wi... The reactions of Co(C1O4)2·6H2O and Co(NO3)2.6H2O with the di-Schiff base ligand N,N'-bis-(1-benzimidazo-2-yl-ethylidene)-ethane-1,2-diamine (LA) in ethanol have been investigated. The reactions of LA with excess amount of cobalt salts yield the six-coordinate complexes [CoL2](ClO4)E·H2O 1 and [CoL2](NO3)E·H2O 2 as isolatable products (L= N-(1- benzimidazo-2-yl-ethylidene)-ethane-1,2-diamine), where L is a tri-dentate mono-Schiff base ligand, resulting from the hydrolysis of the precursor di-Schiff base LA. Both complexes were characterized by X-ray crystallography. Crystal data for complex 1: monoclinic, space group P21/c, a = 11.9214(10), b = 23.5828(17), c = 14.0387(12)A, β = 135.219(4)°, C22H30Cl2CoN8O9, Mr = 680.37, V = 2780.1(4) A^3 ,Z = 4, Dc = 1.625 g/cm^3,μ(MoKa) = 0.876 mm^-1, F(000) = 1404, the final R = 0.0725 and wR = 0.1530 for 5726 observed reflections (I 〉 2σ(I)). Crystal data for complex 2: monoclinic, space group P21/c, a = 18.2162(16), b = 10.0610(6), c = 18.593(2)A, β = 130.099(3)°, C22H30CoN10O7, Mr = 605.49, V = 2606.5(4) A3 Z = 4, Dc = 1.543 g/cm^3,μ(MoKa) = 0.722 mm^-1, F(000) = 1260, the final R = 0.0619 and wR = 0.1429 for 5194 observed reflections (I 〉 2σ(I)). X-ray diffraction analysis reveals that each cobalt atom in the two complexes is chelated by six nitrogen atoms from two tridentate iigands L, exhibiting a slightly distorted octahedral coordination sphere. In both complexes, the strong hydrogen-bonding interactions between the lattice waters and N-H groups of the ligands result in 1D chains which are further connected by ClO4^- (or NO3^-) groups to form a 3D framework. In complex 2, the strong π-π interactions increase the stability of the structure. 展开更多
关键词 2-acetylbenzimidazole di-schiff base ligand crystal structure hydrolysis hydrogen-bonding interactions coordination complex N N -bis-(1-benzimidazo-2-yl-ethylidene)-ethane- 1 2-diamine N-(1-benzimidazo-2-yl-ethylidene)-ethane- 1 2-diamine
下载PDF
Novel Isatin-Schiff Base Cu (II) and Ni(II) Complexes. X-ray Crystal Structure of Bis[3-(4-hexylphenylimino)-1H-indol-2(3H)-one]-dichlorocopper(II) Complex
14
作者 Ayse ERCAG Sema Oztürk YILDIRIM +2 位作者 Mehmet AKKURT Mahmure Ustün OZGUR Frank W. HEINEMANN 《Chinese Chemical Letters》 SCIE CAS CSCD 2006年第2期243-246,共4页
Schiff base ligand (HL) derived from 4-hexylaniline with isatin (1H-indole-2,3-dione) and its complexes with Cu(Ⅱ), Ni(Ⅱ) were prepared and characterized by analytical, spectroscopic (IR, UV-Vis, Mass) tec... Schiff base ligand (HL) derived from 4-hexylaniline with isatin (1H-indole-2,3-dione) and its complexes with Cu(Ⅱ), Ni(Ⅱ) were prepared and characterized by analytical, spectroscopic (IR, UV-Vis, Mass) techniques, electrical conductivity, magnetic and thermal measurements. The crystal and molecular structure of [Cu(HL)2Cl2] was determined by a single-crystal X-ray diffraction study. The molecular structure of the title compound has an inversion center on the Cu atom. 展开更多
关键词 Mononuclear Cu(ⅱ and Ni(ⅱ complexes isatin-anilines schiff base crystal structure.
下载PDF
Synthesis and Crystal Structure of a Dinuclear Cu(II) Complex [Cu(C_(12)H_(17)N_2O)(NCS)]_2 with Tridentate Schiff Base Ligand N-(Salicylidene)-3-dimethylaminopropylamine
15
作者 林鸿 冯云龙 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第3期346-348,共3页
A new dinuclear copper(II) complex (Cu(C12H17N2O)(NCS)2, C26H34Cu2N6O2S2) has been synthesized and characterized by X-ray structure determination. It crystallizes in the triclinic system, space group P1 with a = 11.... A new dinuclear copper(II) complex (Cu(C12H17N2O)(NCS)2, C26H34Cu2N6O2S2) has been synthesized and characterized by X-ray structure determination. It crystallizes in the triclinic system, space group P1 with a = 11.289(2), b = 12.071(2), c = 12.113(2) ?, α = 72.90(3), β = 83.76(3), γ = 65.60(3)°, V = 1436.7(5) ?3, Z = 2, Mr = 653.79, F(000) = 676, Dc = 1.511 g/cm3, μ(MoKα) = 1.660 mm?1, the final R = 0.0334 and wR = 0.0856 for 5047 observed reflections (I > 2σ(I)). The asymmetric unit comprises two half-molecules. The complex is a centrosymmetric dimmer in which each copper(II) is coordinated in the equatorial plane to the N-(salicylidene)-3- dimethylaminopropylamine ligand through the deprotonated phenolic oxygen atom as well as the nitrogen atoms of imine and amine. The fourth coordination site is occupied by the nitrogen atom of NCS?, while the axial one by the symmetrically related phenoxy oxygen of the other monomeric unit. The Cu(II)…Cu(II) average distance is 3.110(1) ?. 展开更多
关键词 dimethylamino-1-propylamine SALICYLALDEHYDE schiff base Cu(II) complex crystal structure
下载PDF
Syntheses and Crystal Structures of Two Copper(II) Complexes Derived from Bidentate Schiff Bases
16
作者 张新利 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2013年第2期236-242,共7页
Two new Cu(Ⅱ) complexes have been synthesized with two different bidentate N2O2 donor Schiffbase ligands HL1 (2-((E)-(4-chlorophenylimino)methyl)-6-bromo-4-chlorophenol) and HL2 (2-((E)-(2-chlorophenyl... Two new Cu(Ⅱ) complexes have been synthesized with two different bidentate N2O2 donor Schiffbase ligands HL1 (2-((E)-(4-chlorophenylimino)methyl)-6-bromo-4-chlorophenol) and HL2 (2-((E)-(2-chlorophenylimino)methyl)-6-bromo-4-chlorophenol), respectively. Both complexes 1 and 2 have been characterized by elemental analysis and single-crystal X-ray diffraction studies. Structural studies reveal that in both complexes the metal centers are four-coordinated with N202 donor set of Schiff base ligands. Complex 1 belongs to the tetragonal system, space group P4(3)2(1)2 with a = 10.2379(2), b = 10.2379(2), c = 24.9623(90) A, V = 2616.41(12) A^3, Z = 4, Dc = 1.908 g/cm^3,μ(MoKa) = 4.3327 mm^-1, F(000) = 1468, S = 0.999, the final R = 0.0345 and wR = 0.0835 for 3506 unique reflections (Rint= 0.0428) with 3249 observed ones (I 〉 2σ(I)). Complex 2 is of monoclinic system, space group P21/c with a = 11.064(3), b = 9.437(2), c = 13.277(4) A, fl = 108.997(3)°, V = 1310.8(6) A^3, Z = 2, Dc= 1.904 g/cm^3,μ(MoKa) = 4.319 mm^-1, F(000) = 734, S = 0.997, the final R = 0.0282 and wR = 0.0619 for 3491 unique reflections (Rint = 0.0428) with 2777 observed ones (I 〉 20(I)). The units of the complex are linked via weak interactions, such as C-H…Br hydrogen bonds together with Cl…C1 and Cu…Cl interactions, leading to the formation of one-dimensional chain and two-dimensional network and stabilizing the crystal structure. 展开更多
关键词 synthesis crystal structure copper(ⅱ schiff base complexes weak interactions
下载PDF
Synthesis and Crystal Structure of a Di-μ_2-phenolic Bridged Binuclear Manganese(Ⅲ) Schiff Base Complex
17
作者 蒲小华 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2010年第10期1501-1504,共4页
A new complex [Mn(L)(NCS)]2·0.5CH3CN (H2L = N,N'-bis(chlorosalicylidene)-1,2-diaminoethane) has been synthesized,and its structure (C70H51Cl8Mn4N13O8S4,Mr = 1833.84) was determined by single-crystal X-... A new complex [Mn(L)(NCS)]2·0.5CH3CN (H2L = N,N'-bis(chlorosalicylidene)-1,2-diaminoethane) has been synthesized,and its structure (C70H51Cl8Mn4N13O8S4,Mr = 1833.84) was determined by single-crystal X-ray diffraction analysis. The crystal belongs to the monoclinic system,space group C2/c with a = 25.883(2),b = 12.3320(13),c = 13.5951(16) ,β = 112.906(2),V = 3997.2(7) 3,Z = 2,Dc = 1.524 g/cm3,μ(MoKα) = 1.050mm-1,F(000) = 1852,S = 1.098,the final R = 0.0630 and wR = 0.1847 for 2542 reflections with Ⅰ 〉 2σ(Ⅰ). The centrosymmetric title complex contains a dimer in which two distorted octahedral Mn(Ⅲ) centers are bridged equatorially by phenolic oxygen of the Schiff base ligand. The units of the complex are linked via weak C-H···N hydrogen bonds,leading to the formation of 1D chains along the b axis. The weak π-π packing interactions and weak intermolecular C(3)-H(3)···N(3) hydrogen bonds stabilize the crystal structure. 展开更多
关键词 synthesis crystal structure binuclear manganese(III) schiff base complex
下载PDF
Synthesis and Crystal Structure of Lanthanide Schiff Base Complex [2-OC_6H_4CHN(2,6-i-Pr_2C_6H_3)]_2ErCl(THF)
18
作者 YULong-Bao YAOYing-Ming +2 位作者 SHENQi ZHANGYong LANGJian-Ping 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2003年第5期517-520,共4页
The lanthanide Schiff base complex [2-OC6H4CHN(2,6-i-Pr2C6H3)]2ErCl(THF) (C42H52ClErN2O3) has been prepared by the reaction of anhydrous LnCl3 with 2 equiv. of the sodium salt of the bidentate Schiff base N-(2,6-diiso... The lanthanide Schiff base complex [2-OC6H4CHN(2,6-i-Pr2C6H3)]2ErCl(THF) (C42H52ClErN2O3) has been prepared by the reaction of anhydrous LnCl3 with 2 equiv. of the sodium salt of the bidentate Schiff base N-(2,6-diisopropylphenyl)salicylaldimine in THF. The crystal structure was determined by X-ray diffraction analysis. The crystal belongs to triclinic, space group P1 with a = 9.200(1), b = 13.637(2), c = 16.705(2) ? a = 74.493(7), b = 77.979(8), g = 81.306(8), V = 1965.2(4) ?, Z = 2, Mr = 835.60, Dc = 1.412 g/cm3, F(000) = 854, T = 193 K, l(MoKa) = 0.7107 ?and m = 22.38 cm-1. The final R = 0.052 and wR = 0.076 for 8386 observed reflections with I ≥ 2s(I). 展开更多
关键词 schiff base lanthanide complex synthesis crystal structure
下载PDF
Synthesis and Crystal Structure of a Novel Fe(Ⅲ) Schiff Base Complex
19
作者 江光奇 张岱月 杨正峰 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2012年第3期385-388,共4页
A novel Fe(Ⅲ) Schiff base complex,FeⅢ(HL) {H4L = 1,1,1,1-tetrakis[(salicylaldimino)methyl]methane},has been prepared and characterized by elemental analyses,IR spectrum,and single-crystal X-ray diffraction ana... A novel Fe(Ⅲ) Schiff base complex,FeⅢ(HL) {H4L = 1,1,1,1-tetrakis[(salicylaldimino)methyl]methane},has been prepared and characterized by elemental analyses,IR spectrum,and single-crystal X-ray diffraction analysis.The crystal belongs to the monoclinic system,space group P21/n with a = 12.569(3),b = 12.955(3),c = 17.647(4) ,β = 91.896(9)°,V = 2871.9(1) 3,Z = 4,Dc = 1.391 g/cm3,F(000) = 1252.0,Mr = 601.45,R = 0.0383 and wR = 0.1025.The structural analysis reveals that the Fe(Ⅲ) ions are six-coordinated by imine nitrogen atoms and phenolic oxygen atoms form three pendant arms of Schiff base ligands,and one of the salicylaldimine chelating units remains uncoordinated.Discrete complex molecules were further assembled into 1D supramolecular aggregations by C-H…O hydrogen bonding and C-H…π interactions. 展开更多
关键词 schiff base crystal structure complex
下载PDF
STUDIES ON SCHIFF BASE COMPLEXES——Ⅳ. SYNTHESIS AND CRYSTAL STRUCTURE OF Fe (SALDPT) SAL
20
作者 汪信 William T.Pennington James C.Fanning 《无机化学学报》 SCIE CAS CSCD 北大核心 1989年第3期46-53,共8页
制备了Fe(saldpt)sal单晶并作了晶体结构分析。晶体数据:单斜,空间群P2_1/C(#14),a=12.486(5),b=18.502(8),c=10.870(5)A,β=104.23(3)°,V=2434(2)A^3,Z=4,D_c=1.
关键词 铁配合物 schiff合成 晶体结构
下载PDF
上一页 1 2 23 下一页 到第
使用帮助 返回顶部