Synthesis, Crystal Structure, and Fluorescent and Thermal Stability Properties of Two New Cobalt(Ⅱ) Complexes with 2,2’-Bipy as Ligand

【摘要】 Two new cobalt（Ⅱ）complexes[Co₂（2,2?-bipy）₂（dpa）₂（H₂O）₅]·4H₂O（1）and Co（2,2?-bipy）₃（SO₄）]·7.5H₂O（2）have been synthesized with diaphonic acid（H₂dpa）and 2,2?-bipyridine（2,2?-bipy）as ligands.In 1,two neighboring cobalt（Ⅱ）ions are linked together by one bridging diaphonic acid group,forming an asymmetric dinuclear structure.1 crystallizes in triclinic,space group ■ with a=9.825（6）,b=13.007（8）,c=19.586（1）?,α=80.773（1）o,β=77.065（1）o,γ=85.902（1）o,M_r=431.4,V=2406.5（3）?³,D_c=1.48 g/cm³,Z=2,μ（Mo Kα）=0.767 mm^-1,F（000）=1112,the final R=0.0379 and wR=0.0862.The central cobalt（Ⅱ）ions in 1 and 2 are coordinated with six atoms,forming distorted octahedral coordination geometry.The fluorescence and thermal stability properties of 1 and 2 are also reported.更多还原

【Abstract】 Two new cobalt（Ⅱ）complexes[Co₂（2,2?-bipy）₂（dpa）₂（H₂O）₅]·4H₂O（1）and Co（2,2?-bipy）₃（SO₄）]·7.5H₂O（2）have been synthesized with diaphonic acid（H₂dpa）and 2,2?-bipyridine（2,2?-bipy）as ligands.In 1,two neighboring cobalt（Ⅱ）ions are linked together by one bridging diaphonic acid group,forming an asymmetric dinuclear structure.1 crystallizes in triclinic,space group ■ with a=9.825（6）,b=13.007（8）,c=19.586（1）?,α=80.773（1）o,β=77.065（1）o,γ=85.902（1）o,M_r=431.4,V=2406.5（3）?³,D_c=1.48 g/cm³,Z=2,μ（MoKα）=0.767 mm^-1,F（000）=1112,the final R=0.0379 and wR=0.0862.The central cobalt（Ⅱ）ions in 1 and 2 are coordinated with six atoms,forming distorted octahedral coordination geometry.The fluorescence and thermal stability properties of 1 and 2 are also reported.更多还原