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
A new silver complex salt [Ag(N2C11H10)2]NO3 (where N2C11H10 = 4,5-dihydro-1H-benzo[g]indazole), has been synthesized and characterized by elemental and thermal analyses, IR and 1HNMR spectroscopies, single crystal X-...A new silver complex salt [Ag(N2C11H10)2]NO3 (where N2C11H10 = 4,5-dihydro-1H-benzo[g]indazole), has been synthesized and characterized by elemental and thermal analyses, IR and 1HNMR spectroscopies, single crystal X-ray structure determination and DFT studies. Its molecular structure comprises of a silver center coordinated to two nitrogen atoms from two 4,5-dihydro-1H-benzo[g]indazole molecule giving rise to a cationic complex entity, [Ag(N2C11H10)2]+ with as counter ion. The bulk structure is consolidated by N–H…O, C–H…π, Ag…π and Ag…O intermolecular interactions, thus generating a pseudo-helical network. The optimized structure, frontier molecular orbitals (HOMO and LUMO) and global reactivity descriptors were investigated by performing DFT calculations.展开更多
The new salt bis(4,5-dihydro-1H-benzo[g]indazole)silver(I) hexafluorophosphate, [Ag(N2H10C11)2]PF6, has been synthesized in methanol at ambient temperature and characterized by elemental and thermal analyses, FTIR and...The new salt bis(4,5-dihydro-1H-benzo[g]indazole)silver(I) hexafluorophosphate, [Ag(N2H10C11)2]PF6, has been synthesized in methanol at ambient temperature and characterized by elemental and thermal analyses, FTIR and 1HNMR spectroscopies, Rietveld refinement from powder diffraction data and DFT studies. The salt crystallizes in the triclinic space group P-1 with the parameters: a = 7.776 ?, b = 8.676 ?, c = 9.226 ?, α = 69.27° β = 89.86°, γ = 74.50°, V = 558.02 ?3, Z = 1. In the structure, the silver center is coordinated to two nitrogen atoms from two 4,5-dihydro-1H-benzo[g]indazole ligands, forming a centrosymmetric complex cation, [Ag(N2H10C11)2]+, with a linear coordination geometry around the silver center. The hexafluorophosphate ion, , acts as counter anion. The crystal packing is governed by N-H···F and C-H···F hydrogen bonds that interconnect the ionic constituents and Ag···F and Ag···π interactions help for the stabilization of the packing. The optimized structure was obtained at B3LYP/LanL2DZ level in the gas phase. The stability and reactivity of the structure were studied using respectively HOMO-LUMO gap and electronic global quantities (ionization potential (I) and electron affinity (A)) as descriptors.展开更多
omplexes[(η ̄5-C_5H_5)Fe (CO)_2L] ̄+BF(Ⅰ)[L=PPh_3,P(OPH)_3,P(OC_2H_5)_3,pyridine, 3-acetyl-pyridine, 4-methyl-pyridine, phenyl cyanide, quinoline] and[(η ̄4-C_4H_6)Co(CO)_2L] ̄+BF(Ⅱ)[L=PPh_3,P(OPH)_3,P(OC_2H_5)_3]...omplexes[(η ̄5-C_5H_5)Fe (CO)_2L] ̄+BF(Ⅰ)[L=PPh_3,P(OPH)_3,P(OC_2H_5)_3,pyridine, 3-acetyl-pyridine, 4-methyl-pyridine, phenyl cyanide, quinoline] and[(η ̄4-C_4H_6)Co(CO)_2L] ̄+BF(Ⅱ)[L=PPh_3,P(OPH)_3,P(OC_2H_5)_3],were respec-tively produced in the reactions of[(η ̄5-C_5H_5)Fe (CO)_2 ]_2 and [ (η ̄4-C_4H_5 )Co (CO)_2]_2with Cp_2FeBF_4 in the presence of the ligands. Some characteristics of these reac-tions were discussed and all the complexes were identified by iR and  ̄1H NMR spec-troscopy. These complexes are air-stable and the preparative metliods are simple.展开更多
The diphenyliodonium salt (DPIOC)/triethylamine (TEA) is used as photoinitiator for radical photopolymerization. It was found that a ground state CT complex formed between DPIOC as electron acceptor and TEA as electro...The diphenyliodonium salt (DPIOC)/triethylamine (TEA) is used as photoinitiator for radical photopolymerization. It was found that a ground state CT complex formed between DPIOC as electron acceptor and TEA as electron donor, which results in extending the photosensitivity range of DPIOC/TEA system up to above 500nm compared with DPIOC alone. The kinetic studies on photopolymerization of methyl methacrylate (MMA) were carried out in CH_3CN: H_2O (14: 1, v/v) mixture solution at 30℃ by dilatometer. The results obtained show that the polymerization rate (R_p) increases with increasing concentrations of DPIOC and TEA with exponent 0. 65 and 0. 62 respectively. The activation energy E_a and k_p/k_^(1/2) value were determined to be 4.1 Kcal mol^(-1) and 0.045 respectively. The other influence factors and reaction mechanism were also discussed.展开更多
A heteropoly molybdoselenite complex (NH4)6[ Se2Mo8O31 ]·5H2O and its lanthanide salts Ln2 [Se2Mo8O31]-XH2O(Ln = La^3+, Ce^3+, Nd^3+ Sm^3+) were synthesized and characterized with elemental analysis, IR, ...A heteropoly molybdoselenite complex (NH4)6[ Se2Mo8O31 ]·5H2O and its lanthanide salts Ln2 [Se2Mo8O31]-XH2O(Ln = La^3+, Ce^3+, Nd^3+ Sm^3+) were synthesized and characterized with elemental analysis, IR, UV, XRD and TG-DTA. Their reactivity for hydroxylation of phenol was investigated. The results show that catalytic activity of ( NH4 )6 [Se2Mo8O31 ]·5H2O is higher than that of its lanthanide salts. The reaction temperatures, the reaction time. the catalvst amount, the ratio of phenol and H2O2 have influence on the phenol conversation, H2O2 selectivity and product distribution. The optimum reaction condition was obtained with orthogonal method. At optimum reaction condition which the ratio of phenol and H2O2 = 1 : 1, reaction time is 4 h, reaction temperatures is 70℃ and catalyst is 10 g·mol^-1, and the conversation of phenol reaches as high as 29.65 %, the product selectivity can reach 77.2 % for catalyst (NH4)6[ Se2Mo8O31 ]·5H2O.展开更多
The Co(II) complex I and ammonium salt II were synthesized from the direct reaction of 1,2-ethylenediamine and cobaltous acetate tetrahydrate and manganese acetate tetrahydrate in anhydrous ethanol. Treatment of N,N...The Co(II) complex I and ammonium salt II were synthesized from the direct reaction of 1,2-ethylenediamine and cobaltous acetate tetrahydrate and manganese acetate tetrahydrate in anhydrous ethanol. Treatment of N,N'-bis(salicylidene)ethylenediamine with Cu(OAc)2·H2O results in the formation of Cu(II) complex III. C14H37CoNaO8 (I): triclinic, space group P1, a = 8.6296(12), b = 12.0291(17), c = 12.1108(17) A, α = 75.335(2), β = 69.991(2), γ = 72.248(2)°, V= 1109.4(3) A3, Z = 2, ρcaloa = 1.342 g/cm3, the final R= 0.0342 for 4817 observed reflections with I 〉 2σ(I) and Rw = 0.1263 for all data. C6H16N204 (II): space group P1, a = 5.5513(10), b = 5.5589(11), c = 7.4437(14) A, α = 94.332(4), β = 104.497(4), γ = 103.487(4)°,V= 214.06(7) A3, Z = 1, ρcalcd = 1.398 g/cm3, the final R = 0.0431 for 829 observed reflections with I〉 2σ(I) and Rw = 0.1263 for all data. C14H37CuN40 (III), space group P21/n, a = 9.050(9), b = 18.434(17), c = 11.659(11) A, β = 107.134(19)°, V= 1859(3) A3, Z = 4, ρcalcd =1.443 g/cm3, the final R = 0.0616 for 3308 observed reflections (O 〉 2σ(I)) and Rw = 0.1229 for all data. Their structures were all determined by X-ray diffraction, elemental analysis and IR.展开更多
The diaryldiselenides reacted with titanocene hydried (Cp2TiH) generted from Cp2TiCl2/i-BuMgBr to give arylselenium complexes of titanocene. They reacted readily with diaryliodoiums salt to give unsymmetical diaryls...The diaryldiselenides reacted with titanocene hydried (Cp2TiH) generted from Cp2TiCl2/i-BuMgBr to give arylselenium complexes of titanocene. They reacted readily with diaryliodoiums salt to give unsymmetical diarylselenides.展开更多
The title compound has been synthesized by the reaction of [Ni(trans[14]diene)]I2 with Na[Ni(mnt)2] in water and THF, where [trans[14]diene]= 5, 7,7, 12, 14, 14-hexamethyl-1, 4, 8, 11-tetraazacyclotetradeca-4, 11-dien...The title compound has been synthesized by the reaction of [Ni(trans[14]diene)]I2 with Na[Ni(mnt)2] in water and THF, where [trans[14]diene]= 5, 7,7, 12, 14, 14-hexamethyl-1, 4, 8, 11-tetraazacyclotetradeca-4, 11-diene and mnt2- = cis-1, 2-dicyano-1,2-ethylenedithiolato. Its crystal structure has been determined by X-raycrystallography analysis with 4827 independent reflections (Fo>4σ(F0). The bimetallic complex salt [Ni (trans [14] diene )] [Ni (mnt )2] (C24 H32N8Ni2S4, Mr = 678. 24 )crystallizes in the triclinic system with space group P1, a = 9. 2911 (9), b= 11. 7075(12), c=15. 799(2) A, α=68. 384(7), β=79. 324(7), γ=67. 581(6)°, V=1474. 9(3) A3, Dc=1. 527 Mg/m3, Z=2, λ=0. 71073 A, μ=1. 589mm-1, F(000) =704,R=0. 0367. The structure consists of slightly distorted Square planar units [Ni(trans[14]diene)]2+ and [Ni(mnt)2]2-.展开更多
The Y-Eu oxalate precursor was prepared with a homogeneous precipitation method. And the additives, Na2CO3, S, NaCl or their combination, were introduced into the precursor to prepare Y2O3 :Eu^3+ red phosphors at 10...The Y-Eu oxalate precursor was prepared with a homogeneous precipitation method. And the additives, Na2CO3, S, NaCl or their combination, were introduced into the precursor to prepare Y2O3 :Eu^3+ red phosphors at 1000 1300 ℃ for 2 h. The effect of molten salts on particle size and luminescent intensity was studied. The experimental results showed that the complex molten salt (Na:CO3 + S + NaCl) was conductive to enhance the luminescent intensity of Y2O3 :Eu^3+. The emission intensity of the phosphor prepared with these additives at 1300 ℃ was about 45% higher than that of the one prepared without molten salt, and about 11% higher than that of the corresponding commercial phosphor. Meanwhile, the particle size of Y2O3 :Eu^3+ phosphor was controlled effectively with the molten salt.展开更多
基金Natural Science Foundation and Education Department Foundation of Guangxi Province
文摘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.
文摘A new silver complex salt [Ag(N2C11H10)2]NO3 (where N2C11H10 = 4,5-dihydro-1H-benzo[g]indazole), has been synthesized and characterized by elemental and thermal analyses, IR and 1HNMR spectroscopies, single crystal X-ray structure determination and DFT studies. Its molecular structure comprises of a silver center coordinated to two nitrogen atoms from two 4,5-dihydro-1H-benzo[g]indazole molecule giving rise to a cationic complex entity, [Ag(N2C11H10)2]+ with as counter ion. The bulk structure is consolidated by N–H…O, C–H…π, Ag…π and Ag…O intermolecular interactions, thus generating a pseudo-helical network. The optimized structure, frontier molecular orbitals (HOMO and LUMO) and global reactivity descriptors were investigated by performing DFT calculations.
文摘The new salt bis(4,5-dihydro-1H-benzo[g]indazole)silver(I) hexafluorophosphate, [Ag(N2H10C11)2]PF6, has been synthesized in methanol at ambient temperature and characterized by elemental and thermal analyses, FTIR and 1HNMR spectroscopies, Rietveld refinement from powder diffraction data and DFT studies. The salt crystallizes in the triclinic space group P-1 with the parameters: a = 7.776 ?, b = 8.676 ?, c = 9.226 ?, α = 69.27° β = 89.86°, γ = 74.50°, V = 558.02 ?3, Z = 1. In the structure, the silver center is coordinated to two nitrogen atoms from two 4,5-dihydro-1H-benzo[g]indazole ligands, forming a centrosymmetric complex cation, [Ag(N2H10C11)2]+, with a linear coordination geometry around the silver center. The hexafluorophosphate ion, , acts as counter anion. The crystal packing is governed by N-H···F and C-H···F hydrogen bonds that interconnect the ionic constituents and Ag···F and Ag···π interactions help for the stabilization of the packing. The optimized structure was obtained at B3LYP/LanL2DZ level in the gas phase. The stability and reactivity of the structure were studied using respectively HOMO-LUMO gap and electronic global quantities (ionization potential (I) and electron affinity (A)) as descriptors.
文摘omplexes[(η ̄5-C_5H_5)Fe (CO)_2L] ̄+BF(Ⅰ)[L=PPh_3,P(OPH)_3,P(OC_2H_5)_3,pyridine, 3-acetyl-pyridine, 4-methyl-pyridine, phenyl cyanide, quinoline] and[(η ̄4-C_4H_6)Co(CO)_2L] ̄+BF(Ⅱ)[L=PPh_3,P(OPH)_3,P(OC_2H_5)_3],were respec-tively produced in the reactions of[(η ̄5-C_5H_5)Fe (CO)_2 ]_2 and [ (η ̄4-C_4H_5 )Co (CO)_2]_2with Cp_2FeBF_4 in the presence of the ligands. Some characteristics of these reac-tions were discussed and all the complexes were identified by iR and  ̄1H NMR spec-troscopy. These complexes are air-stable and the preparative metliods are simple.
文摘The diphenyliodonium salt (DPIOC)/triethylamine (TEA) is used as photoinitiator for radical photopolymerization. It was found that a ground state CT complex formed between DPIOC as electron acceptor and TEA as electron donor, which results in extending the photosensitivity range of DPIOC/TEA system up to above 500nm compared with DPIOC alone. The kinetic studies on photopolymerization of methyl methacrylate (MMA) were carried out in CH_3CN: H_2O (14: 1, v/v) mixture solution at 30℃ by dilatometer. The results obtained show that the polymerization rate (R_p) increases with increasing concentrations of DPIOC and TEA with exponent 0. 65 and 0. 62 respectively. The activation energy E_a and k_p/k_^(1/2) value were determined to be 4.1 Kcal mol^(-1) and 0.045 respectively. The other influence factors and reaction mechanism were also discussed.
文摘A heteropoly molybdoselenite complex (NH4)6[ Se2Mo8O31 ]·5H2O and its lanthanide salts Ln2 [Se2Mo8O31]-XH2O(Ln = La^3+, Ce^3+, Nd^3+ Sm^3+) were synthesized and characterized with elemental analysis, IR, UV, XRD and TG-DTA. Their reactivity for hydroxylation of phenol was investigated. The results show that catalytic activity of ( NH4 )6 [Se2Mo8O31 ]·5H2O is higher than that of its lanthanide salts. The reaction temperatures, the reaction time. the catalvst amount, the ratio of phenol and H2O2 have influence on the phenol conversation, H2O2 selectivity and product distribution. The optimum reaction condition was obtained with orthogonal method. At optimum reaction condition which the ratio of phenol and H2O2 = 1 : 1, reaction time is 4 h, reaction temperatures is 70℃ and catalyst is 10 g·mol^-1, and the conversation of phenol reaches as high as 29.65 %, the product selectivity can reach 77.2 % for catalyst (NH4)6[ Se2Mo8O31 ]·5H2O.
文摘The Co(II) complex I and ammonium salt II were synthesized from the direct reaction of 1,2-ethylenediamine and cobaltous acetate tetrahydrate and manganese acetate tetrahydrate in anhydrous ethanol. Treatment of N,N'-bis(salicylidene)ethylenediamine with Cu(OAc)2·H2O results in the formation of Cu(II) complex III. C14H37CoNaO8 (I): triclinic, space group P1, a = 8.6296(12), b = 12.0291(17), c = 12.1108(17) A, α = 75.335(2), β = 69.991(2), γ = 72.248(2)°, V= 1109.4(3) A3, Z = 2, ρcaloa = 1.342 g/cm3, the final R= 0.0342 for 4817 observed reflections with I 〉 2σ(I) and Rw = 0.1263 for all data. C6H16N204 (II): space group P1, a = 5.5513(10), b = 5.5589(11), c = 7.4437(14) A, α = 94.332(4), β = 104.497(4), γ = 103.487(4)°,V= 214.06(7) A3, Z = 1, ρcalcd = 1.398 g/cm3, the final R = 0.0431 for 829 observed reflections with I〉 2σ(I) and Rw = 0.1263 for all data. C14H37CuN40 (III), space group P21/n, a = 9.050(9), b = 18.434(17), c = 11.659(11) A, β = 107.134(19)°, V= 1859(3) A3, Z = 4, ρcalcd =1.443 g/cm3, the final R = 0.0616 for 3308 observed reflections (O 〉 2σ(I)) and Rw = 0.1229 for all data. Their structures were all determined by X-ray diffraction, elemental analysis and IR.
基金Project 29672008 was supported by NationalNatural Science Foundation of China.
文摘The diaryldiselenides reacted with titanocene hydried (Cp2TiH) generted from Cp2TiCl2/i-BuMgBr to give arylselenium complexes of titanocene. They reacted readily with diaryliodoiums salt to give unsymmetical diarylselenides.
文摘The title compound has been synthesized by the reaction of [Ni(trans[14]diene)]I2 with Na[Ni(mnt)2] in water and THF, where [trans[14]diene]= 5, 7,7, 12, 14, 14-hexamethyl-1, 4, 8, 11-tetraazacyclotetradeca-4, 11-diene and mnt2- = cis-1, 2-dicyano-1,2-ethylenedithiolato. Its crystal structure has been determined by X-raycrystallography analysis with 4827 independent reflections (Fo>4σ(F0). The bimetallic complex salt [Ni (trans [14] diene )] [Ni (mnt )2] (C24 H32N8Ni2S4, Mr = 678. 24 )crystallizes in the triclinic system with space group P1, a = 9. 2911 (9), b= 11. 7075(12), c=15. 799(2) A, α=68. 384(7), β=79. 324(7), γ=67. 581(6)°, V=1474. 9(3) A3, Dc=1. 527 Mg/m3, Z=2, λ=0. 71073 A, μ=1. 589mm-1, F(000) =704,R=0. 0367. The structure consists of slightly distorted Square planar units [Ni(trans[14]diene)]2+ and [Ni(mnt)2]2-.
基金Project supported by the National Natural Science Foundation of China (50372086)the Ministry of Science and Technology of Chi-na (2006CB601104)
文摘The Y-Eu oxalate precursor was prepared with a homogeneous precipitation method. And the additives, Na2CO3, S, NaCl or their combination, were introduced into the precursor to prepare Y2O3 :Eu^3+ red phosphors at 1000 1300 ℃ for 2 h. The effect of molten salts on particle size and luminescent intensity was studied. The experimental results showed that the complex molten salt (Na:CO3 + S + NaCl) was conductive to enhance the luminescent intensity of Y2O3 :Eu^3+. The emission intensity of the phosphor prepared with these additives at 1300 ℃ was about 45% higher than that of the one prepared without molten salt, and about 11% higher than that of the corresponding commercial phosphor. Meanwhile, the particle size of Y2O3 :Eu^3+ phosphor was controlled effectively with the molten salt.