Table of Contents
Journal of Crystallography
Volume 2014 (2014), Article ID 721978, 5 pages
http://dx.doi.org/10.1155/2014/721978
Research Article

Structural Studies of and

Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, UT 84112-0850, USA

Received 19 October 2013; Accepted 21 December 2013; Published 13 February 2014

Academic Editor: Dong Qiu

Copyright © 2014 Bryce Anderson et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The structures of and have been determined (py = pyridine; THF = tetrahydrofuran). Each is composed of a six-membered ring having alternating cadmium and iron centers. The presence of the more strongly basic amine ligands in the former led to a greater contribution of an ionic resonance form, which resulted in overall longer Cd–Fe bonds and a greater contribution of a bicapped tetrahedral coordination geometry about iron. Thus, the Cd–Fe distances range from 2.5679(4) to 2.6501(1) Å for the THF complex versus 2.6445(8) to 2.6833(7) Å for the py complex. Similarly, the Fe–Cd–Fe and Cd–Fe–Cd angles for the THF complex fell in respective ranges of 139.03(2)–157.27(2)° and 84.41(1)–99.79(1)°, as compared to 135.31(3)–139.51(4)° and 102.52(3)–104.62(4)° for the py complex. The space group for the former compound is Pbcn, with = 12.2678(2), = 22.4601(5), and = 17.0039(4) Å, while for the THF complex, the space group is , with = 10.7297(2), = 20.4961(2), = 18.7464(3) Å, and = 94.2715(6)°.