| Abstract: | A new flexible double betaine L (L =1,4-bis(pyridinio-4-carboxylato-N-methyl)and its crystal structure was determined by single-crystal X-ray diffraction analysis.Crystallo13.7854(3), b = 14.2820(3), c = 14.9188(4)(。A), β = 116.418(1)°, V = 2630.5(1)(。A)3, Z = 4, Dc = 1.704g/cm3, μ(MoKα) = 0.911 mm-1, F(000) = 1368, the final R = 0.0315 and wR = 0.0768 for 3637observed reflections with I ＞ 2σ(I).In complex 1, L acts as a monodentate ligand to link a Cd(Ⅱ) ion in a novel coordination mode of double betaines.The mononuclear [Cd(H2O)4L(NO3)] units are connected through intermolecular hydrogen bonds and π-π stacking reactions to generate a 3D network. |
