Estimating the strength of the M-H-B interaction: a kinetic approach.
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abstract
Photolysis of BzCr(CO)3 and TpMn(CO)3 in the presence of H3BNEt3 yields a metal-borane complex. Displacement of the weakly coordinated borane by P(OEt)3 proceeds by a dissociative mechanism and an Eyring analysis yields the first estimate of 20 kcal mol(-1) for the strength of this novel interaction.