Carbon—bismuth bonds

Although it was first prepared by Verma et al. in 1983 starting from Bi(III) trifluoroacetate [58], our group developed another strategy for the preparation of Bi(OTf)3 [32]. The key point of our synthetic strategy is based on the acidic cleavage of the three carbon-bismuth bonds of triphenylbismuth by triflic acid in dichloromethane (Scheme 1). A study of the hydration of Bi(0Tf)3xH20 revealed that this compound can exist as three different hydrates, the nonahydrate, the tetrahydrate, and the dehydrate [35], The structures of the nona- and tetrahydrate forms have been determined by ab-initio calculations [35] and XRD [36]. 

All three carbon—bismuth bonds of tribenzylbismuthine [99715-52-3], C21H21Bi, (64) and triphenylbismuthine (65) can be cleaved by alkali metals. Under some conditions, however, tertiary bismuthines react with sodium or potassium to yield secondary bismuthides. Thus a number of sodium dialkylbismuthides have been obtained by the interaction of a trialkylhismnthine and sodium in liquid ammonia (66—69) ... 

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