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trans-[Fe(CN)4 (CO)2 ]2- , a 21st Century [Fe(CN)(CO)] Compound
Jianfeng Jiang1, Stephen A Koch1
1Department of Chemistry State University of New York at Stony Brook Stony Brook, NY 11794-3400 (USA) Fax: (+1) 631-632-7960.
Abstract:
In 1887, more than a century after the synthesis of [FeII (CN)6 ]4- , the complex [FeII (CN)5 (CO)]3- , in which a CN- ligand is replaced by CO, was reported. It has taken an additional century for the synthesis of the complex in which a second CN- ligand is substituted by CO: trans-[FeII (CN)4 (CO)2 ]2- (structure shown). Remarkably, this anion is prepared by the simple reaction of FeCl2 with NaCN and CO in water. [Fe(CN)x (CO)y ] complexes are of interest as models for the active site of hydrogenase enzymes.
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