The new clathrate complex
[{Ni(NCS)
2
(H
2
O)
2
(dabco)
2
}· dabco]·2dmso
(dabco = 1,4-diazabicyclo[2.2.2]octane and
dmso = dimethyl sulfoxide), the first example of a
compound comprising metal centres and dabco molecules in a
1

:

3 ratio, has been prepared from metal powder; its
crystal structure contains
[Ni(NCS)
2
(H
2
O)
2
(dabco)
2
]
∞
square grids linked by hydrogen-bonded dabco
molecules to afford a three-dimensional framework, molecules of dmso
occupy square-shaped channels.
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