A noval cobalt(II) coordination polymer, {[Co(bpmb)(H2O)2(C2H5OH)2]?NO3)2}∞ (1), where bpmb=N,N'- bis(3-pyridylmethyl)-1,4-benzenedicarboxamide, was synthesized by self-assembly of the two topic ligands with coba...A noval cobalt(II) coordination polymer, {[Co(bpmb)(H2O)2(C2H5OH)2]?NO3)2}∞ (1), where bpmb=N,N'- bis(3-pyridylmethyl)-1,4-benzenedicarboxamide, was synthesized by self-assembly of the two topic ligands with cobalt nitrate in ethanol solution, and characterized structurally by X-ray crystallography analysis. The crystal data belong to triclinic, space group P1with cell parameters a=0.8911(3) nm, b=0.9042(3) nm, c=1.0068(3) nm, =73.083(5)? =81.069(5)? =76.210(5)? R1=0.0518, wR2=0.0947. The results of structure analysis indicate that each bpmb ligand coordinates two Co(II) atoms and each metal atom is in octahedral coordination geometry with four oxygen atoms of two ethanol and two water molecules, two nitrogen atoms from two different bpmb ligands in trans position forming an infinite 1D chain-like structure. There are hydrogen bonding and - stacking interaction among these chains,leading to supramolecular formation with 3D net structure.展开更多
The ligand [1, 2-bis(4-pyridinecarboxamido) ethane] (L) and the coordination polymer {[Cu(L)(2)(H2O)].(NO3)(2).6H(2)O}(n)(1) have been synthesized and characterized by IR and H-1 NMR, spectra. Their molecular structur...The ligand [1, 2-bis(4-pyridinecarboxamido) ethane] (L) and the coordination polymer {[Cu(L)(2)(H2O)].(NO3)(2).6H(2)O}(n)(1) have been synthesized and characterized by IR and H-1 NMR, spectra. Their molecular structures and the packing of 1 have been determined by single-crystal X-ray diffraction analysis. The Cu(II) in 1 is bridged by two ligand forming an infinite one-dimensional chain like structure and L in I adopts a different conformation from its free state. 1 belongs to monoclinic, space group P2(1)/n, a = 1.2896(3) nm, b = 1.2552(8) nm, c = 2.2903(19) nm, beta = 93.04(5)degrees, Z = 4, V = 3.702(4) nm(3). The TG and DTG experiments showed that the uncoordinated H2O can be removed at low temperature by heating, and it does not decompose until 250 degreesC.展开更多
文摘A noval cobalt(II) coordination polymer, {[Co(bpmb)(H2O)2(C2H5OH)2]?NO3)2}∞ (1), where bpmb=N,N'- bis(3-pyridylmethyl)-1,4-benzenedicarboxamide, was synthesized by self-assembly of the two topic ligands with cobalt nitrate in ethanol solution, and characterized structurally by X-ray crystallography analysis. The crystal data belong to triclinic, space group P1with cell parameters a=0.8911(3) nm, b=0.9042(3) nm, c=1.0068(3) nm, =73.083(5)? =81.069(5)? =76.210(5)? R1=0.0518, wR2=0.0947. The results of structure analysis indicate that each bpmb ligand coordinates two Co(II) atoms and each metal atom is in octahedral coordination geometry with four oxygen atoms of two ethanol and two water molecules, two nitrogen atoms from two different bpmb ligands in trans position forming an infinite 1D chain-like structure. There are hydrogen bonding and - stacking interaction among these chains,leading to supramolecular formation with 3D net structure.
基金ProjectsupportedbytheNaturalScienceFoundationofEducationBureauofLiaoningProvince China (No .2 0 0 2 10 0 5 )
文摘The ligand [1, 2-bis(4-pyridinecarboxamido) ethane] (L) and the coordination polymer {[Cu(L)(2)(H2O)].(NO3)(2).6H(2)O}(n)(1) have been synthesized and characterized by IR and H-1 NMR, spectra. Their molecular structures and the packing of 1 have been determined by single-crystal X-ray diffraction analysis. The Cu(II) in 1 is bridged by two ligand forming an infinite one-dimensional chain like structure and L in I adopts a different conformation from its free state. 1 belongs to monoclinic, space group P2(1)/n, a = 1.2896(3) nm, b = 1.2552(8) nm, c = 2.2903(19) nm, beta = 93.04(5)degrees, Z = 4, V = 3.702(4) nm(3). The TG and DTG experiments showed that the uncoordinated H2O can be removed at low temperature by heating, and it does not decompose until 250 degreesC.