A new Ni（II） complex, [Ni（ftsc）2NO3]NO3 （Hftsc = furan-2-carbaldehyde thiosemicarbazone）, has been synthesized and characterized by IR, UV spectra and single-crystal X-ray diffraction analysis. It crystalfizes i...A new Ni（II） complex, [Ni（ftsc）2NO3]NO3 （Hftsc = furan-2-carbaldehyde thiosemicarbazone）, has been synthesized and characterized by IR, UV spectra and single-crystal X-ray diffraction analysis. It crystalfizes in a monoclinic system, space group P2 1/n, with a = 10.5203（13）, b = 9.2094（11）, c = 20.829（3）A,β = 91.518（2）°, V= 2 017.3（5）A^3, Z = 4, F（000） = 1064, Dc = 1.716 g/cm^3, and wR = 0.0800. The complex contains a six-coordinated nickel（II） center which is bound to two imine nitrogen atoms and two thiolato sulfur atoms of two ligands as well as two oxygen atoms from a nitrate anion to assume a distorted octahedral coordination geometry. In addition, intermolecular N-H…O and C-H…O hydrogen bonds between adjacent molecules link the molecules together to form a three-dimensional structure.展开更多
A new polyoxometalate dimer based on lacunary Wells-Dawson anion and lanthanide cation, Na14[{Nd（H2O）3 （α2-PeWt7O61）2]·17H2O, was isolated as a sodium salt under ambient conditions and characterized by IR, T...A new polyoxometalate dimer based on lacunary Wells-Dawson anion and lanthanide cation, Na14[{Nd（H2O）3 （α2-PeWt7O61）2]·17H2O, was isolated as a sodium salt under ambient conditions and characterized by IR, TG, and X-ray single crystal structure analysis and electrochemistry. It belonged to the triclinic, space group Pi with a=1.26738 （15） nm, b=1.41464 （17） nm, c=2.3254 （4） nm, α=103.142 （2）°, β = 95.122 （2）°, γ=113.9690 （10）°, V=3.6317 （8）nm^3, Z=2, Dc=4.274 mg/m^3, and μ=27.695 mm^-1. The Nd^3＋ ion was substituted for a [W=O]^4＋ unit in the ＂cap＂ site of the tungsten-oxygen framework of the parent Wells-Dawson ion. The cyclic voltammograms of the title compound exhibited nearly chemically reversible one-step one-electron transfer process and two-step irreversible reduction processes. Thermogravimetric showed a one-step slow weight loss stage in the range of 25-850 ℃.展开更多
A new one-dimensional polymeric complex [Cd（SCN）2（H2O）]L （L = N,N′-bis（furan- 2-ylmethylene）hydrazine） has been synthesized and characterized by IR, UV spectra, TG-DTA technique and single-crystal X-ray diffr...A new one-dimensional polymeric complex [Cd（SCN）2（H2O）]L （L = N,N′-bis（furan- 2-ylmethylene）hydrazine） has been synthesized and characterized by IR, UV spectra, TG-DTA technique and single-crystal X-ray diffraction analysis. It crystallizes in triclinic, pace group P1^- with a = 5.9268（8）, b = 10.8678（15）, c = 13.3671（19） A, α = 109.295（2）, β = 95.092（2）, γ = 97.8580（10）°, V = 796.70（19）A^3, Z = 2, C12H10CdN4O3S2, Mr = 434.76, μ = 1.648 mm^-1, Dc = 1.812 g/cm^3, F（000） = 428, R = 0.0308 and wR = 0.0769. The crystal structure reveals that the structure of [Cd（SCN）2（H2O）]n features di-μ-1,3-thiocyante bridges and 1D chains. The octahedrally coordinated Cd atom is surrounded by one oxygen atom from water molecule, three S atoms and two N atoms from five di-μ-1,3 thiocyanato bridges. The Cd atoms are connected by two di-μ-1,3 thiocyanato bridges with the Cd（1）…Cd（1A） separation of 4.239（1） A and Cd（1）...Cd（1B） of 5.852（1）/~. In addition, the one-dimensional straight chain structure is further connected by multiform intermolecular N-H…O hydrogen bonds and π-π interactions to form a three-dimensional supramolecular structure.展开更多
A new pseudo Keggin-type bicapped compound（Et3N）0.5（en）2[SiMo12O40（VO）2]·4H2O（Et3N=triethylamine,en=ethylenediamine） has been hydrothermally synthesized and characterized by IR,elemental analysis,TG and X...A new pseudo Keggin-type bicapped compound（Et3N）0.5（en）2[SiMo12O40（VO）2]·4H2O（Et3N=triethylamine,en=ethylenediamine） has been hydrothermally synthesized and characterized by IR,elemental analysis,TG and X-ray crystallography.The title compound crystallizes in monoclinic,space group P21/n with a=17.576（2）,b=13.535（1）,c=21.587（2）,β=103.790（10）°,V=4987.3（8）3,Z=4,Dc=2.925 Mg/m3,Mr=2196.12,F（000）=4148,μ=3.400 mm–1,R=0.0379 and wR=0.1219.The most remarkable structural feature of the compound is that the clusters represent bicapped pseudo-Keggin structure and are linked one by one through V-O-V bonds forming an infinite 1D chain. Furthermore, such chains are interconnected in a cross-like arrangement through multiform hydrogen bonds to yield a 3D supramolecular network.展开更多
A new compound has been synthesized under hydrothermal conditions and characterized by IR, elemental analysis, XPS and single-crystal X-ray diffraction analysis. The title compound [Mn（en）3]2en0.5[HV8VV8IVO38（CI）]...A new compound has been synthesized under hydrothermal conditions and characterized by IR, elemental analysis, XPS and single-crystal X-ray diffraction analysis. The title compound [Mn（en）3]2en0.5[HV8VV8IVO38（CI）]·4.5H2O crystallizes in monoclinic, space group C2/c, with a = 17.016（4）, b = 18.858（4）, c = 18.872（4） A, β = 93.667（4）°, V = 6043（2）A3, Z = 4, Dc = 2.242 g/cm3, Mr = 2040.12, F（000） = 4020,μ = 2.895 mm-1, Rint = 0.0921, R = 0.0649 and wR = 0.1325. Single-crystal X-ray structure analysis indicates that the title compound consists of a polyanion [HV8VV8IVO38（CI）]4- cage, two [Mn（en）3]2^2＋ cations, four and a half lattice waters and a half ethylenediamine. In addition, intermolecular O-H...N, O-H...O, N-H...O and C-H...O hydrogen bonds link the molecules together to form a three-dimensional structure.展开更多
基金the Ministry of Education of China (No. 207068)the Natural Science Foundation of Henan Province (No. 0611023000)the Education Department of Henan Province (No. 2007150003, 2007150011)
文摘A new Ni（II） complex, [Ni（ftsc）2NO3]NO3 （Hftsc = furan-2-carbaldehyde thiosemicarbazone）, has been synthesized and characterized by IR, UV spectra and single-crystal X-ray diffraction analysis. It crystalfizes in a monoclinic system, space group P2 1/n, with a = 10.5203（13）, b = 9.2094（11）, c = 20.829（3）A,β = 91.518（2）°, V= 2 017.3（5）A^3, Z = 4, F（000） = 1064, Dc = 1.716 g/cm^3, and wR = 0.0800. The complex contains a six-coordinated nickel（II） center which is bound to two imine nitrogen atoms and two thiolato sulfur atoms of two ligands as well as two oxygen atoms from a nitrate anion to assume a distorted octahedral coordination geometry. In addition, intermolecular N-H…O and C-H…O hydrogen bonds between adjacent molecules link the molecules together to form a three-dimensional structure.
基金the Nature Science Foundation of Henan Province (0611011900)
文摘A new polyoxometalate dimer based on lacunary Wells-Dawson anion and lanthanide cation, Na14[{Nd（H2O）3 （α2-PeWt7O61）2]·17H2O, was isolated as a sodium salt under ambient conditions and characterized by IR, TG, and X-ray single crystal structure analysis and electrochemistry. It belonged to the triclinic, space group Pi with a=1.26738 （15） nm, b=1.41464 （17） nm, c=2.3254 （4） nm, α=103.142 （2）°, β = 95.122 （2）°, γ=113.9690 （10）°, V=3.6317 （8）nm^3, Z=2, Dc=4.274 mg/m^3, and μ=27.695 mm^-1. The Nd^3＋ ion was substituted for a [W=O]^4＋ unit in the ＂cap＂ site of the tungsten-oxygen framework of the parent Wells-Dawson ion. The cyclic voltammograms of the title compound exhibited nearly chemically reversible one-step one-electron transfer process and two-step irreversible reduction processes. Thermogravimetric showed a one-step slow weight loss stage in the range of 25-850 ℃.
基金supported by the Natural Science Foundation of the Ministry of Education of China (No.207068)Henan Province (No.0611023000)the Education Department of Henan Province (No.2007150003,2007150011)
文摘A new one-dimensional polymeric complex [Cd（SCN）2（H2O）]L （L = N,N′-bis（furan- 2-ylmethylene）hydrazine） has been synthesized and characterized by IR, UV spectra, TG-DTA technique and single-crystal X-ray diffraction analysis. It crystallizes in triclinic, pace group P1^- with a = 5.9268（8）, b = 10.8678（15）, c = 13.3671（19） A, α = 109.295（2）, β = 95.092（2）, γ = 97.8580（10）°, V = 796.70（19）A^3, Z = 2, C12H10CdN4O3S2, Mr = 434.76, μ = 1.648 mm^-1, Dc = 1.812 g/cm^3, F（000） = 428, R = 0.0308 and wR = 0.0769. The crystal structure reveals that the structure of [Cd（SCN）2（H2O）]n features di-μ-1,3-thiocyante bridges and 1D chains. The octahedrally coordinated Cd atom is surrounded by one oxygen atom from water molecule, three S atoms and two N atoms from five di-μ-1,3 thiocyanato bridges. The Cd atoms are connected by two di-μ-1,3 thiocyanato bridges with the Cd（1）…Cd（1A） separation of 4.239（1） A and Cd（1）...Cd（1B） of 5.852（1）/~. In addition, the one-dimensional straight chain structure is further connected by multiform intermolecular N-H…O hydrogen bonds and π-π interactions to form a three-dimensional supramolecular structure.
基金supported by the National Natural Science Foundation of China (No 20701012)the Key Project of Chinese Ministry of Education (No 207068)+1 种基金the Foundation of Henan Educational Committee of China (No 2007150003 and 2008B150002)the Foundation for University Youth Key Teacher of Henan Province
文摘A new pseudo Keggin-type bicapped compound（Et3N）0.5（en）2[SiMo12O40（VO）2]·4H2O（Et3N=triethylamine,en=ethylenediamine） has been hydrothermally synthesized and characterized by IR,elemental analysis,TG and X-ray crystallography.The title compound crystallizes in monoclinic,space group P21/n with a=17.576（2）,b=13.535（1）,c=21.587（2）,β=103.790（10）°,V=4987.3（8）3,Z=4,Dc=2.925 Mg/m3,Mr=2196.12,F（000）=4148,μ=3.400 mm–1,R=0.0379 and wR=0.1219.The most remarkable structural feature of the compound is that the clusters represent bicapped pseudo-Keggin structure and are linked one by one through V-O-V bonds forming an infinite 1D chain. Furthermore, such chains are interconnected in a cross-like arrangement through multiform hydrogen bonds to yield a 3D supramolecular network.
基金supported by the National Natural Science Foundation of China (No. 20701012)the Foundation of the Education Ministry of China (No. 207068)the Education Department of Henan Province (No. 2007150003, 2007150011)
文摘A new compound has been synthesized under hydrothermal conditions and characterized by IR, elemental analysis, XPS and single-crystal X-ray diffraction analysis. The title compound [Mn（en）3]2en0.5[HV8VV8IVO38（CI）]·4.5H2O crystallizes in monoclinic, space group C2/c, with a = 17.016（4）, b = 18.858（4）, c = 18.872（4） A, β = 93.667（4）°, V = 6043（2）A3, Z = 4, Dc = 2.242 g/cm3, Mr = 2040.12, F（000） = 4020,μ = 2.895 mm-1, Rint = 0.0921, R = 0.0649 and wR = 0.1325. Single-crystal X-ray structure analysis indicates that the title compound consists of a polyanion [HV8VV8IVO38（CI）]4- cage, two [Mn（en）3]2^2＋ cations, four and a half lattice waters and a half ethylenediamine. In addition, intermolecular O-H...N, O-H...O, N-H...O and C-H...O hydrogen bonds link the molecules together to form a three-dimensional structure.
