Reduction of carbon monoxide. Past research summary

Research programs for the year on the preparation, characterization, and reactions of binuclear tantalum complexes are described. All evidence to date suggest the following of these dimeric molecules: (1) the dimer does not break into monomers under mild conditions; (2) intermolecular hydride exchan...

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Bibliographic Details
Main Author: Schrock, R.R.
Language:unknown
Published: 2008
Subjects:
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBON MONOXIDE
REDUCTION
ISONITRILES
TANTALUM COMPLEXES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
RESEARCH PROGRAMS
STRUCTURAL CHEMICAL ANALYSIS
NUCLEAR MAGNETIC RESONANCE
ORGANIC CHLORINE COMPOUNDS
CARBON COMPOUNDS
CARBON OXIDES
CARBONIC ACID DERIVATIVES
CHALCOGENIDES
COMPLEXES
MAGNETIC RESONANCE
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RESONANCE
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
Carbonic acid
Online Access:http://www.osti.gov/servlets/purl/5642912
https://www.osti.gov/biblio/5642912
https://doi.org/10.2172/5642912
Description
Summary:Research programs for the year on the preparation, characterization, and reactions of binuclear tantalum complexes are described. All evidence to date suggest the following of these dimeric molecules: (1) the dimer does not break into monomers under mild conditions; (2) intermolecular hydride exchange is not negligible, but it is slow; (3) intermolecular non-ionic halide exchange is fast; (4) the ends of the dimers can rotate partially with respect to one another. The binuclear tantalum hydride complexes were found to react with carbon monoxide to give a molecule which is the only example of reduction of CO by a transition metal hydride to give a complex containing a CHO ligand. Isonitrides also reacted in a similar manner with dimeric tantalum hydride. (ATT)

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