Question #284444
Explain why Mo(PMe&H2 is a dihydride (contains two separate H ligands), but Mo(CO
Expert's answer
Dihydrogen complex has more sigma donor character than hydride complex. For the first compound PMe3 have no proper pi-acceptor ability. So, the compound is hydride but due to presence of CO, which has higher pi-acceptor characteristics. The second compound get stabilized.
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