Synthesis and crystal structure of a mixed Cu-Cd bimetallic complex {[CuCd(pba)(H2O)(3)] center dot 2H(2)O}(n)

A one-dimensional bimetallic compound {[CuCd (pba) (H2O)(3)] . 2H(2)O}(n) i n which pba was propylenebis (oxamic acid), was prepared. Crystal structure of the title compound was determined. It belongs to orthorhombic system, m olecular formula CuCdC7H16N2O11, M-r = 480. 17, space group Pnma (# 62), a = 12. 953(2), b = 21. 626 (6), c = 5. 253 (3) Angstrom, V = 1471 (2) Angstr om(3) and D-x = 2. 17 g/cm(3) for Z = 4. The structure was solved by direct methods with final R = 0. 052 and R-w = 0. 063 for 1055 observed reflectio ns with I>3 sigma(I). Two nitrogen atoms and two oxygen atoms from the oxam ide and a water molecule coordinated to the Cu-II ion forming a square pyra midal geometry. Four oxygen atoms from the oxamide and two water molecules coordinated to the Cd-II ion forming an elongated octahedral geometry.