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Reactivity of 17 e(-) Complex Re(II)Br(4)(CO)(2)](2-) with Bridging Aromatic Ligands. Characterization and CO-Releasing Properties


Zobi, F; Blacque, O (2011). Reactivity of 17 e(-) Complex Re(II)Br(4)(CO)(2)](2-) with Bridging Aromatic Ligands. Characterization and CO-Releasing Properties. Dalton Transactions, 40(18):4994-5001.

Abstract

Carbon monoxide releasing molecules (CO-RMs) are a newly emerging class of compounds of pharmacological interest. Among the transition metal-based CO-RMs, 17-electron complexes of general formula cis-trans-Re(II)(CO)(2)Br(2)L(2)] are promising candidates but their poor hydrophilicity hampers future applications. In an effort to increase water solubility of d(5) dicarbonyl rhenium CO-RMs, the reaction of the cis-Re(II)(CO)(2)Br(4)](2-)anion with bridging aromatic ligands of the pyridine and diazine type was investigated. Mononuclear and binuclear complexes are presented and it is shown that the nature of the bridging ligand critically dictates the formation of either species. Most complexes retained their fundamental CO-releasing properties. The synthesis of the molecules together with structural, spectroscopic and theoretical details are discussed.

Carbon monoxide releasing molecules (CO-RMs) are a newly emerging class of compounds of pharmacological interest. Among the transition metal-based CO-RMs, 17-electron complexes of general formula cis-trans-Re(II)(CO)(2)Br(2)L(2)] are promising candidates but their poor hydrophilicity hampers future applications. In an effort to increase water solubility of d(5) dicarbonyl rhenium CO-RMs, the reaction of the cis-Re(II)(CO)(2)Br(4)](2-)anion with bridging aromatic ligands of the pyridine and diazine type was investigated. Mononuclear and binuclear complexes are presented and it is shown that the nature of the bridging ligand critically dictates the formation of either species. Most complexes retained their fundamental CO-releasing properties. The synthesis of the molecules together with structural, spectroscopic and theoretical details are discussed.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Language:English
Date:2011
Deposited On:14 Mar 2012 12:52
Last Modified:05 Apr 2016 15:42
Publisher:Royal Society of Chemistry
ISSN:1477-9226
Publisher DOI:10.1039/c1dt10110b
Other Identification Number:ISI:000289732600035
Permanent URL: http://doi.org/10.5167/uzh-60671

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