Lanthanoid(II) tetraphenylborate complexes: From discrete ions to pseudo metallocenes

This article describes the synthetic strategies, structural features and reactivity of a unique class of discrete cationic lanthanoid(II) complexes with tetraphenylborate counter ions. In addition, variable binding of these ‘weakly coordinating anions’ (WCA) to the large electropositive f-element metal cations can also occur.