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Si takes a rest: A bulky sigma-bound terphenyl substituent and a pi-bound Cp* ligand enable the isolation and full characterization of the first aryl-substituted, monomeric silicon(II) compound 1, which can be regarded as the "resting state" of a true silylene containing a sigma-bound Cp* group. The conformation of the aryl group prevents aryl-Si pi back-bonding.
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Jutzi et al. (2009) studied this question.
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