Research Article: Poly[triaqua­[μ4-3-(4-carboxyl­atophen­oxy)propionato-κ4O:O′:O′′:O′′′][μ3-3-(4-carboxyl­atophen­oxy)propionato-κ3O:O′:O′′]dizinc]

Date Published: February 01, 2012

Publisher: International Union of Crystallography

Author(s): Shan Gao, Seik Weng Ng.


The coordination polymer [Zn2(C10H8O5)2(H2O)3]n adopts a layer structure in which the two independent ZnII ions exist in trigonal–bipyramidal coordination geometries. One carboxyl­ate dianion binds to a monoaqua-coordinated metal ion through the aliphatic carboxyl­ate end and to the diaqua-coordinated metal ion through the aromatic carboxyl­ate end; the other dianion binds in the reverse manner. Three of the four carboxyl­ate ends of the two dianions are also engaged in bridging inter­actions; these lead to a layer structure parallel to (100). Adjacent layers are linked by O—Hwater⋯O hydrogen bonds into a three-dimensional network.

Partial Text

For the cobalt(II) derivative of 3-(4-carb­oxy­phen­oxy)­propionic acid, see: Xiao et al. (2006 ▶).