Poly[[μ4-4-(carboxylatomethyl)benzoato]zinc(II)

Jason Jia,Robert L Laduca

doi:10.1107/s2414314619010149

Abstract

In the title compound, [Zn(C9H6O4)] n , the ZnII cations are coordinated in a tetrahedral fashion by carboxylate O-atom donors belonging to four 4-(carboxymethyl) benzoate (4-cmb) ligands. Each 4-cmb ligand binds to four ZnII cations in an exotetradentate fashion to create a non-interpenetrated [Zn(4-cmb)] n three-dimensional coordination polymer network with a new non-diamondoid 66 topology. The crystal studied was refined as an inversion twin.

Highlights

In the title compound, [Zn(C9H6O4)]n, the ZnII cations are coordinated in a tetrahedral fashion by carboxylate O-atom donors belonging to four
The title compound was isolated during an exploratory synthetic effort aiming to produce a zinc coordination polymer containing both 4-(carboxymethyl)benzoate (4-cmb) and bis(4-pyridyl)urea ligands
The divalent Zn atom is coordinated in a distorted tetrahedral fashion, with single carboxylate O-atom donors from four different 4-cmb ligands comprising the coordination environment (Fig. 1)

Summary

Structure description

The title compound was isolated during an exploratory synthetic effort aiming to produce a zinc coordination polymer containing both 4-(carboxymethyl)benzoate (4-cmb) and bis(4-pyridyl)urea (bpu) ligands. The 4-cmb ligands in the title compound adopt an exotetradentate 4-4-O:O0:O00:O000 bridging mode (Fig. 2). The shorter carboxylate arms of the 4-cmb ligands construct [Zn(OCO)]n chain motifs parallel to the a axis, with an anti–syn bridging mode and a ZnÁ Á ÁZn internuclear distance of 4.875 (1) A. The longer carboxylate arms of the 4-cmb ligands construct [Zn(OCO)]n chain motifs parallel to the b axis, with an anti–syn bridging mode. The full span of the 4-cmb ligands constructs a noninterpenetrated three-dimensional [Zn(4-cmb)]n coordination polymer network (Fig. 3). The topology of the title complex can be simplified by considering both the Zn atoms and the exotetradentate 4-cmb ligands as 4-connected nodes. [Zn(C9H6O4)] 243.51 Orthorhombic, Pca21 173 9.6314 (11), 4.8612 (6), 17.269 (2) 808.54 (17) 4 Mo K 3.02 0.11 Â 0.07 Â 0.05

Data collection Diffractometer Absorption correction

Bruker APEXII CCD diffractometer

Special details