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AuAu distances of only 3.000 Å in the complex 2 are convincing evidence for the existence of attractive interactions between Au1 centers. 2 is formed from 1 and [(CO)AuCl] with rotation of a CP bond. 1, Ph instead of Me, is sterically too strongly hindered for this reaction.
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Schmidbaur et al. (1988) studied this question.
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