3-DIMENSIONAL STRUCTURE OF THE CLATHRATE COMPLEX 2O)(2)(DABCO)(2))CENTER-DOT-DABCO]CENTER-DOT-2DMSO OBTAINED FROM ZERO VALENT METAL (DABCO=1,4-DIAZABICYCLO[2.2.2]OCTANE AND DMSO=DIMETHYL SULFOXIDE)

The new clathrate complex [{Ni(NCS)(2)(H2O)(2)(dabco)(2)} . dabco] . 2 dmso (dabco = 1,4-diazabicyclo[2.2.2]octane and dmso = dimethyl sulfox ide), the first example of a compound comprising metal centres and dab co molecules in a 1:3 ratio, has been prepared from metal powder; its crystal structure contains [Ni(NCS)(2)(H2O)(2)(dabco)(2)]infinity squa re grids linked by hydrogen-bonded dabco molecules to afford a three-d imensional framework, molecules of dmso occupy square-shaped channels.