The synthesis and X-ray structure characterisation of the volatile complexes [Sr(thd)2{Me(OCH2CH2)3OMe}] and [Sr2(thd)4{Me(OCH2CH2)2OMe}2(µ-H2O)](Hthd = 1,1,1,6,6,6-hexamethylheptane-2,4-dione)

Abstract

The reaction of [Sr₃(thd)₆(Hthd)] with one equivalent of triglyme [Me(OCH₂CH₂)₃OMe] has yielded the monomeric species, [Sr(thd)₂(triglyme)]1; while with a 2 : 1 mixture of diglyme [Me(OCH₂CH₂)₂OMe] and H₂O the dimeric complex, [Sr₂(thd)₄(diglyme)₂(µ-H₂O)]2 is obtained; the related [Sr(tfa)₂] reacts with one equivalent of hexamethyltriethylenetetramine to yield [Sr(tfa)₂(hmteta)]3; complexes 1 and 2 are the first structurally characterised discrete molecular strontium β-diketonates [hmteta = Me₂NCH₂CH₂CH₂N(Me)CH₂CH₂N(Me)CH₂CH₂NMe₂].