Résumé
The compound [Y
4
Ba
2
(µ
6
-O)(µ
3
-OEt)
8
(dpm)
6
][dpm = Bu
t
C(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 Pr
i
OH-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.