Infinite chain structures of [Zn(4,4 '-bipy)Cl-2](n) and [Cu(H2PO4)(4,4 '-bipy)center dot 2H(2)O](n) via hydrothermal synthesis

The hydrothermal reactions of zinc chloride with 4,4-bipy and TiO2, 85% H3P O4, CuCO3. -Cu(OH)(2). 6H(2)O with 4,4 ' -bipy in water yielded [Zn(4,4 ' - bipy)Cl-2](n) (I) and [Cu(H2PO4)(4,4 ' -bipy). 2H(2)O](n) (II), respectivel y. Their crystal structures were determined by single-crystal X-ray diffrac tion analysis. Both compounds possess infinite chain coordination polymeric structures. For I, the chain is in zigzag form with each zinc atom coordin ated by two nitrogen atoms from two 4,4 ' -bipy molecules ligands and two c hloride ions in a distorted tetrahedral geometry. For II, the chains are li nked by hydrogen bonds to form a three-dimensional network structure and ea ch Cu(I) center is coordinated by two nitrogen atoms from two 4,4 ' -bipy l igands and one phosphate oxygen atom in a triangular coordination geometry. (C) 2001 Elsevier Science Ltd. All rights reserved.