A new heterometalic [Co2
La2
(OH)2
(ib)4
(bdea)2
(NO3
)2
]∙2MeCN (1) cluster has been syn thesized by the reaction of Co(II) isobutyrate (Hib = isobutyric acid) and La(NO3
)3
∙ 6H2
O with
N-butyldiethanolamine (H2
bdea) in acetonitrile. Single-crystal X-ray structural analysis reveals
that 1 crystallizes with two acetonitrile molecules in the P21
/n space group of the monoclinic
system with a = 14.769(5), b = 9.416(3), c = 19.538(6) Å, β=100.315(3)° and V = 2673.11(15)
Å3
. Cluster 1 has a rhombic planar tetranuclear central core {Co(III)2
La(III)2
} best described as
a „butterfly” motif with the La(III) ions ocupied the „body” positions and the Co(III) ions at the
„wing” sites.
