Cationic rare-earth metal bis(tetrahydridoborato) complexes: direct synthesis, structure and ring-opening polymerisation activity toward cyclic esters

Dominique Robert; Małgorzata Kondracka; Jun Okuda

doi:10.1039/b801030g

Cationic rare-earth metal bis(tetrahydridoborato) complexes: direct synthesis, structure and ring-opening polymerisation activity toward cyclic esters

Dalton Trans. 2008 May 28:(20):2667-9. doi: 10.1039/b801030g.

Authors

Dominique Robert¹, Małgorzata Kondracka, Jun Okuda

Affiliation

¹ Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany.

PMID: 18688395
DOI: 10.1039/b801030g

Abstract

Rare-earth metal tris(borohydrides) [Ln(BH4)3(thf)3] (Ln = Y, La, Nd, Sm) are converted with one equivalent of the Brønsted acid [NEt3H]+[BPh4]- in thf into the monocationic bis(borohydride) complexes [Ln(BH4)2(thf)5]+[BPh4]-. They efficiently initiate the ring-opening polymerisation of epsilon-caprolactone.