Two 3D noninterpenetrated chiral coordination polymers with uniform (103)-srs and (42.63.8)-sra nets

Two new noninterpenetrated three-dimensional chiral coordination polymers [Cu(l-cys)(H2O)]n (1) and [Cd(l-cys)(H2O)]n (2) (where H2cys = cysteic acid) have been synthesized and characterized using single-crystal X-ray diffraction, elemental analysis, infrared spectroscopy, and thermogravimetric analysis. In the two complexes, l-cys acts as a μ3-bridge for 1 and a μ4-bridge for 2, respectively, to link metal centers in different modes, forming two different three-dimensional networks. The topological analysis of them shows that 1 can be simplified to a three-connected topology with the short symbol of 103 and the full vertex symbol of 105.105.105 while 2 a four-connected topology with the short symbol of 42.63.8 and the full vertex symbol of 4.6.4.6.6.82, respectively.