Syntheses and Structures of Two Cadmium Complexes with Isophthaloylbisglycine Acid and 4,4'-Bipyridine

The two title complexes [{Cd(IBG-CH3)(4,4'-bipy)(H2O)2}·NO3]n 1 and [{Cd(IBG)- (4,4'-bipy)(H2O)2}·2H2O]n 2 (H2IBG = isophthaloylbisglycine and 4,4'-bipy = 4,4'-bipyridine) have been synthesized and characterized by single-crystal structure determination,IR and TG analyses. Complex 1 crystallizes in monoclinic,space group C2/c with a = 27.221(2),b = 11.6093(7),c = 16.3571(9) ,V = 5149.2(6) 3,Z = 8,C23H23N5O11Cd,Mr = 657.86,Dc = 1.697 g/cm3,F(000) = 2656.00,μ(MoKα) = 0.919 mm-1,the final R = 0.0478 and wR = 0.0882 for 3728 observed reflections with I 2σ(I). Complex 2 crystallizes in triclinic,space group Pī with a = 9.0940(4),b = 11.6852(5),c = 13.1119(6) ,V = 1230.26 3,Z = 2,C22H26N4O10Cd,Mr = 618.87,Dc = 1.671 g/cm3,F(000) = 628.0,μ(MoKα) = 0.951 mm-1,the final R = 0.0567 and wR = 0.1124 for 3713 observed reflections with I 2σ(I). In both structures,the CdII metal centers are coordinated by seven atoms to form a distorted pentagonal bipyramidal geometry.