Strength of the metal-ligand bond in LCr(CO)5 measured by photoacoustic calorimetry

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Abstract

The Cr-L bond strengths for Cr(CO)5L in heptane have been determined using photoacoustic calorimetry. For L = CO, PBu3, CH3CN and THF, ΔHBDE = 27.0, 21.6, 18.2, 12.4 kcalmol respectively. Comparison of the Cr-CO bond dissociation energies in the gas phase and in heptane solution suggests a 10 kcalmol stabilization of Cr(CO)5 by coordinated heptane.

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