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oa Iridium Compounds in Homogeneous Hydrogenation
- Source: Platinum Metals Review, Volume 22, Issue 4, Oct 1978, p. 126 - 129
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- 01 Jan 1978
Abstract
Iridium is generally considered to be a less effective catalyst than the other platinum metals but when highly co-ordinatively unsaturated species of it are prepared they appear to be exceptionally active hydrogenation catalysts, even for reduction of sterically hindered olefins. A mechanism for this reaction has been postulated based on low temperature magnetic resonance evidence. As the reaction proceeds, catalytically inactive hydrogen bridged cluster compounds are formed but work is in progress to counter this deactivation by physically separating the catalytic centres on a polymer support.
© Johnson Matthey