A supramolecular assembly of chiral L/D-[Cd(Cl)(H2O)(phen)2]+ and L,L/D,D-dinuclear Cd complex coordinated by phen and {V16O38(Cl)} cluster

The compound H-3[L/D-Cd(Cl)(H2O)(phen)(2)][{L/D-Cd(H2O)(phen)(2)}(2){V16O38 (Cl)}] (.) 3.5H(2)O (1) was synthesized via hydrothermal techniques from the starting materials of V2O5, CdCl2, phen, H2C2O4 (.) 2H(2)O, CH3COONa and H2O. The compound crystallizes in the space group P2(1)/c of the monoclinic system with a = 12.6315 (2) Angstrom, b = 27.2451 (5) Angstrom, c = 27.3999 (6) Angstrom, alpha = 90degrees, beta = 92.3870 (10)degrees, gamma = 90degrees, V = 9421.4 (3) Angstrom(3), Z = 4. In the 3-D structure of 1, a novel supramolecular assembly of enantiomers L/D-[Cd(Cl)(H2O)(phen)(2)](+) and L,L/D,D-dinuclear Cd complex coordinated by phen groups and V16O38(Cl) cluster is formed via strong intermolecular H-bonding and pi(...)pi stacking interactions with chiral chains of [{L/D-Cd(H2O)(phen)(2)}(2){V16O38 (Cl)}](4-), racemic layers and channels. The channels contain enantiomers L/D-[Cd(Cl)(H2O)(phen)(2)](+) in pairs. The multiple supramolecular interactions strengthen the stability of compound 1. (C) 2004 Published by Elsevier B.V.