When several CO ligands are present in a metal carbonyl, an indication of the individual bond strengths

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When several CO ligands are present in a metal carbonyl, an indication of the individual bond strengths can be obtained by means of force constants derived from the experimental IR frequencies. In [Cr(CO)5(PPh3)] the cis-CO ligands have the higher force constants, whereas in [Ph3SnCo(CO)4] the force constants are higher for the trans-CO. Suggest why, and explain which carbonyl C atoms should be susceptible to nucleophilic attack in these two cases.

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Inorganic Chemistry

ISBN: 9780198768128

7th Edition

Authors: Mark Weller, Tina Overton, Jonathan Rourke

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