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原位产生的SO_4~(2-)配位的二维无机钴配合物K_2[Co_3(OH)_2(SO_4)_3(H_2O)_2]的水热合成及结构表征(英文)

陈梓云;彭梦侠

  Reaction of CoCl_2·6H_2O,4-amino-3,5-di(2-pyridyl)-4H-1,2,4-triazole (abpt),KSCN results in formation of two new complexes,0-D mononuclear complex named[CoSCN(abpt)](1α) and 2-D inorganic coordination framework K_2[Co_3(OH)_2(SO_4)_3(H_2O_)_2](1β) which were obtained in the same hydrothermal reaction system and characterized by elemental analysis and IR.X-ray crystallography shows that 1αcrystallizes in monoclinic system with space group P2_1/c with a= 10.7391(11) A,b= 15.8959(16) A,c = 17.4041(18) A,β=106.720(2)°,V=2845.4(5) A~3,Z=4.1βcrystallizes in orthorhombic system with space group Cmc2_1 with a = 17.9424(17) A,b = 7.5583(7) A,c = 9.7605(10) A,V= 1323.7(2) A~3,Z = 4.In complex la,both abpt and SCN~- ligands are coordinated to Co(Ⅱ) to form two different mononuclear units and further generate a 3D supramolecular architecture by the hydrogen bonds between the S atoms and uncoordinated N atoms of the abpt ligand.While in 1β,the abpt ligand is uncoordinated and the SCN~- anion is changed to SO_4~(2-) anion coordinated to Co(Ⅱ) atoms to result in a 2-D coordination layer.Adjacent layers are linked to each other by hydrogen bonds to generate a 3-D porous supramolecular architecture with 1-D channels along the c-axis,which are occupied by the counter K~+ ions.CCDC:658233,1α;CSD:418495,1β.……   
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