【摘 要】
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T Two complexes with a zwitterionic dicarboxylate ligand,Mn(L)2(H2O)4 1 and Co(L)2(H2O)4 2(L=1-carboxymethylpyridinium-4-carboxylate),were synthesized and struc
【机 构】
：
Shanghai Key Laboratory of Green Chemistry and Chemical Processes
论文部分内容阅读
T Two complexes with a zwitterionic dicarboxylate ligand,Mn(L)2(H2O)4 1 and Co(L)2(H2O)4 2(L=1-carboxymethylpyridinium-4-carboxylate),were synthesized and structurally characterized.Complex 1 crystallizes in monoclinic,space group P21 with α=6.490(2),b=19.210(7),c=7.813(3)(A),β=92.716(5)°,V=972.9(6)(A)3,Z=2,Mr=487.28,Dc=1.663 g/cm3,F(000)=502,μ=0.749 mm-1,S=1.060,the final R=0.0377 and wR=0.0893 for 3292 observed reflections with Ⅰ＞2σ(Ⅰ).Complex 2 is isomorphous with 1,with α=6.478(2),b=19.052(7),c=7.742(3)(A),β=92.690(4)°,V=954.6(6)(A)3,Z=2,Mr=491.28,Dc=1.709 g/cm3,F(000)=506,μ=0.971 mm-1,S=1.035,the final R=0.0425 and wR=0.0809 for 3289 observed reflections with Ⅰ ＞2σ(Ⅰ).In the compounds,the mononuclear[M(L)2(H2O)4]units with trans-octahedral coordination geometry are linked into 3D architectures via hydrogen bonding(or second-sphere coordination)involving carboxylate groups and coordinated water molecules.The 3D networks illustrate a 3,8-connected net with Schl(a)fli symbol(4-62)2(42.623.83).
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