We investigate the Au(III)–CO bond in the [(C4N4C)Au(III)CO]+ complex via charge-displacement (CD) analysis, revealing surprising peculiarities with respect to the Au(I)–CO bond. It shows a large Au(III) <-- CO sigma donation and, unexpectedly, an even larger Au(III) --> CO p back-donation. The overall bonding picture, including a marked anisotropy in the Au(III) - CO in-plane and out-of-plane p back-donation components, is consistent with a CO carbon atom highly susceptible to nucleophilic attack.
The gold(III)–CO bond: a missing piece in the gold carbonyl complex landscape
GAGGIOLI, CARLO ALBERTO;BELPASSI, LEONARDO;TARANTELLI, Francesco;BELANZONI, Paola
2017
Abstract
We investigate the Au(III)–CO bond in the [(C4N4C)Au(III)CO]+ complex via charge-displacement (CD) analysis, revealing surprising peculiarities with respect to the Au(I)–CO bond. It shows a large Au(III) <-- CO sigma donation and, unexpectedly, an even larger Au(III) --> CO p back-donation. The overall bonding picture, including a marked anisotropy in the Au(III) - CO in-plane and out-of-plane p back-donation components, is consistent with a CO carbon atom highly susceptible to nucleophilic attack.File in questo prodotto:
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