论文部分内容阅读
A novel hybrid compound [Co(4,4’-bipy)2(H2O)4](4,4’-H2bipy)2[H2W12O40]·5.5H2O has been synthesized from an acidified aqueous solution and characterized by elemental and thermal analyses,IR and UV spectroscopy,and single-crystal X-ray structure determination. Structure analysis indicates that the title compound is of monoclinic,space group C2/c,with a=21.315(9),b=15.303 (7),c=24.139(10),β=105.170(5)o,V=7599(6)3,Mr=3706.99,Z=4,F(000)=6616,Dc=3.231,μ=18.395 mm-1,R=0.0652 and wR=0.1594. X-ray crystallographic study shows that the title compound consists of one [Co(4,4’-bipy)2(H2O)4]2+ cation,two diprotonated 4,4’-bipyridine molecules,5.5 water molecules of crystallization,and one metatungstate polyoxoanion [H2W12O40]6-,which approaches an effective Td point symmetry. TG-DTA analysis indicates that the framework of the metatungstate polyoxoanion is collapsed at 587.0 ℃.
A novel hybrid compound [Co (4,4’-bipy) 2 (H2O) 4] (4,4’-H2bipy) 2 [H2W12O40] · 5.5H2O has been synthesized from an acidified aqueous solution and characterized by elemental and thermal analyzes Structure analysis indicates that the title compound is of monoclinic, space group C2 / c, with a = 21.315 (9), b = 15.303 (7), c = 24.139 10, β = 105.170 (5) o, V = 7599 (6) 3, Mr = 3706.99, Z = 4, F (000) = 6616, Dc = 3.231, μ = 18.395 mm-1, R = 0.0652 and wR = 0.1594. X-ray crystallographic study shows that the title compound consists of one [Co (4,4’-bipy) 2 (H2O) 4] 2+ cation, two diprotonated 4,4’-bipyridine molecules, 5.5 water molecules of crystallization, and one metatungstate polyoxoanion [H2W12O40] 6-, which approaches an effective Td point symmetry. TG-DTA analysis indicates that the framework of the metatungstate polyoxoanion is collapsed at 587.0 ° C.