Syntheses and structural characterization of three new coordination polymers of [Ag(PPIA) center dot H2O](n), [Cu(PPIA)(2) center dot 2H(2)O](n) and [Zn(PPIA)(2)(H2O)(2)](n); PPIA=3-pyridinepropionic acid

摘要

The syntheses and crystal structures of three new coordination polymers of the type [Ag(PPIA) center dot H2O](n) (PPIA = 3-pyridinepropionic acid) (1), [Cu(PPIA)(2) center dot 2H(2)O](n) (2), and [Zn(PPIA)(2)(H2O)(2)](n) (3), are reported. The reactions of 3-pyridinepropionic acid with AgNO3, Cu(NO3)(2) center dot 6H(2)O and Zn(NO3)(2) center dot 6H(2)O in MeOH afforded complexes 1-3, respectively. Single-crystal X-ray crystallography structure determinations show that complexes 1, 2 and 3 crystallize in the space groups P (1) over bar, Pbea and P2(1), respectively. The Ag(I) centers in 1 adopt a slightly distorted T-shaped geometry, while the Cu(II) centers in 2 exhibit a distorted square planer coordination geometry and the Zn(II) centers in 3 adopt a distorted octahedral coordination geometry. The metal centers in 1-3 coordinate to both the pyridyl and carboxylate groups to form one-dimensional polymeric chains and two-dimensional framework structures, respectively. Interestingly, the one-dimensional chain complex of 1 or the two-dimensional frameworks of 2 and 3 are also linked to form three-dimensional networks through hydrogen bonds. (C) 2006 Elsevier Ltd. All rights reserved.