Lewis acid capping of a uranium(v) nitride via a uranium(iii) azide molecular square

Chem Commun (Camb). 2020 Apr 23;56(33):4535-4538. doi: 10.1039/d0cc01356k.

Abstract

Reaction of (CpiPr4)2UI with NaN3 resulted in formation of tetrameric uranium(iii) azide-bridged 'molecular square' [(CpiPr4)2U(μ-η1:η1-N3)]4 (1). Addition of B(C6F5)3 to 1 induced loss of N2 at room temperature, yielding the uranium(v) borane-capped nitrido (CpiPr4)2U(μ-N)B(C6F5)3 (2).