Synthesis of the first bimetallic barium yttrium oxo alkoxide: crystal structure of [Y4Ba2(µ6-O)(µ3-OEt)8(dpm)6][dpm = ButC(O)CHC(O)But]

Abstract

The compound [Y₄Ba₂(µ₆-O)(µ₃-OEt)₈(dpm)₆][dpm = Bu^tC(O)CHC(O)Bu^t] is obtained by mixing, in the presence of dpmH, a solution of yttrium oxo isopropoxide in toluene with a solution resulting from the reaction of Ba metal with PrⁱOH–EtOH; its crystal structure consists of an oxygen-centred octahedron built up from two barium and four yttrium atoms connected by eight triply bridging ethoxy groups, each of which is chelated by a terminal dpm ligand.