A new lanthanum complex formulated as {（bpyH2）[La（btc）（H2O）4（NO3）]·2H2O}n （1） （btcH4=benzene-1,2,4,5-tetracarboxylic acid; bpy=4,4＇-bipyridine） was hydrothermally synthesized. The complex was charact...A new lanthanum complex formulated as {（bpyH2）[La（btc）（H2O）4（NO3）]·2H2O}n （1） （btcH4=benzene-1,2,4,5-tetracarboxylic acid; bpy=4,4＇-bipyridine） was hydrothermally synthesized. The complex was characterized by FT-IR spectroscopy, elemental analysis and X-ray diffraction. X-ray crystal structural analysis revealed that the compound belonged to the monoclinic space group C2/c with cell parameters a= 1.42806（7） nm, b=1.10258（5） nm, c=1.60333（8） nm and β=101.9400（10）°. The complex was polymeric with La^III atoms linked by four O atoms from two carboxylate groups of one benzene-1,2,4,5-tetracarboxylate. The LaIn atom was ten coordinated in a distorted tetracapped trigonal prism. In the crystal structure, a wide range of noncovalent interactions consisting of hydrogen bonding （of the types of O-H…O, N-H…O and C-H…O） and ion pairing interactions connected the various components into a supramolecular structure.展开更多
Assembly of H4btec with cobalt（Ⅱ） acetate afforded a new double 2D layer coordination polymer, [Co（bteC）1/2（H2O）4·2H2O]n （H4btec = benzene-1,2,4,5-tetracarboxylic acid） 1. The polymeric structure has bee...Assembly of H4btec with cobalt（Ⅱ） acetate afforded a new double 2D layer coordination polymer, [Co（bteC）1/2（H2O）4·2H2O]n （H4btec = benzene-1,2,4,5-tetracarboxylic acid） 1. The polymeric structure has been characterized by single-crystal X-ray diffraction, FT-IR and thermal analysis. The crystal is of triclinic, space group PI with a = 10.8762（2）, b = 11.1411（1）, c = 11.5084（3） A, a = 82.8950（10）, β = 63.0050（10）, γ = 62.1500（10）°, V = 1091.72（4） A^3, C5H13CoO10, Mr= 292.08, Z = 4, Dc = 1.777 g/cm^3, μ = 1.612 mm^-l, F（000） = 600, R = 0.0578, and wR = 0.2162 for 3576 observed reflections （Ⅰ 〉 2σ（Ⅰ））. Complex 1 consists of a new double 2D layer structure [Co（btec）1/2（H2O）4]n, both consisting of 4 ＋ 4 grids with the sizes of 11.3667（2）A × 11.5084（3）A （Co（1）-Co（1A） × Co（2A）-Co（2B）） and 11.5084（3）A × 11.3667（2）A （Co（3）-Co（3C） × Co（4）- Co（4A））, respectively. The phenyl rings are at the comers while the Co（Ⅱ） atoms are in the sides of the grids, and lattice water molecules decorate between the layers. Hydrogen bonds between the layers and lattice water molecules result in the final 3D framework.展开更多
文摘A new lanthanum complex formulated as {（bpyH2）[La（btc）（H2O）4（NO3）]·2H2O}n （1） （btcH4=benzene-1,2,4,5-tetracarboxylic acid; bpy=4,4＇-bipyridine） was hydrothermally synthesized. The complex was characterized by FT-IR spectroscopy, elemental analysis and X-ray diffraction. X-ray crystal structural analysis revealed that the compound belonged to the monoclinic space group C2/c with cell parameters a= 1.42806（7） nm, b=1.10258（5） nm, c=1.60333（8） nm and β=101.9400（10）°. The complex was polymeric with La^III atoms linked by four O atoms from two carboxylate groups of one benzene-1,2,4,5-tetracarboxylate. The LaIn atom was ten coordinated in a distorted tetracapped trigonal prism. In the crystal structure, a wide range of noncovalent interactions consisting of hydrogen bonding （of the types of O-H…O, N-H…O and C-H…O） and ion pairing interactions connected the various components into a supramolecular structure.
基金Supported by the Foundation of Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces (No. 0506)
文摘Assembly of H4btec with cobalt（Ⅱ） acetate afforded a new double 2D layer coordination polymer, [Co（bteC）1/2（H2O）4·2H2O]n （H4btec = benzene-1,2,4,5-tetracarboxylic acid） 1. The polymeric structure has been characterized by single-crystal X-ray diffraction, FT-IR and thermal analysis. The crystal is of triclinic, space group PI with a = 10.8762（2）, b = 11.1411（1）, c = 11.5084（3） A, a = 82.8950（10）, β = 63.0050（10）, γ = 62.1500（10）°, V = 1091.72（4） A^3, C5H13CoO10, Mr= 292.08, Z = 4, Dc = 1.777 g/cm^3, μ = 1.612 mm^-l, F（000） = 600, R = 0.0578, and wR = 0.2162 for 3576 observed reflections （Ⅰ 〉 2σ（Ⅰ））. Complex 1 consists of a new double 2D layer structure [Co（btec）1/2（H2O）4]n, both consisting of 4 ＋ 4 grids with the sizes of 11.3667（2）A × 11.5084（3）A （Co（1）-Co（1A） × Co（2A）-Co（2B）） and 11.5084（3）A × 11.3667（2）A （Co（3）-Co（3C） × Co（4）- Co（4A））, respectively. The phenyl rings are at the comers while the Co（Ⅱ） atoms are in the sides of the grids, and lattice water molecules decorate between the layers. Hydrogen bonds between the layers and lattice water molecules result in the final 3D framework.
