Triamidoamine-uranium(IV)-stabilized terminal parent phosphide and phosphinidene complexes

Benedict M Gardner; Gábor Balázs; Manfred Scheer; Floriana Tuna; Eric J L McInnes; Jonathan McMaster; William Lewis; Alexander J Blake; Stephen T Liddle

doi:10.1002/anie.201400798

Triamidoamine-uranium(IV)-stabilized terminal parent phosphide and phosphinidene complexes

Angew Chem Int Ed Engl. 2014 Apr 22;53(17):4484-8. doi: 10.1002/anie.201400798. Epub 2014 Mar 18.

Authors

Benedict M Gardner¹, Gábor Balázs, Manfred Scheer, Floriana Tuna, Eric J L McInnes, Jonathan McMaster, William Lewis, Alexander J Blake, Stephen T Liddle

Affiliation

¹ School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD (UK).

PMID: 24644135
DOI: 10.1002/anie.201400798

Abstract

Reaction of [U(Tren(TIPS) )(THF)][BPh4 ] (1; Tren(TIPS) =N{CH2 CH2 NSi(iPr)3 }3 ) with NaPH2 afforded the novel f-block terminal parent phosphide complex [U(Tren(TIPS) )(PH2 )] (2; U-P=2.883(2) Å). Treatment of 2 with one equivalent of KCH2 C6 H5 and two equivalents of benzo-15-crown-5 ether (B15C5) afforded the unprecedented metal-stabilized terminal parent phosphinidene complex [U(Tren(TIPS) )(PH)][K(B15C5)2 ] (4; UP=2.613(2) Å). DFT calculations reveal a polarized-covalent UP bond with a Mayer bond order of 1.92.

Keywords: density functional calculations; multiple bonds; phosphides; phosphinidene; uranium.