AN UNUSUAL CO2-CONTAINING ANION - SYNTHESIS AND STRUCTURE OF [(OXS)CA.4HMPA]-(OXS)3.COCL]-[OXS- =C6H4O.(C=S)=N- HMPA =O=P(NME2 )3[(.[(OXS)CO.MU)

Solid CoCl2 dissolves in a toluene solution of (OXS)2Ca.2HMPA to give [(OxS)Ca.4HMPA]+.[(OxS)CO.mu-(OXS)3.CoCl]-, 1, the anion structure con Sists of two Co2+ centres linked by three symmetrically bridging OxS- ligands such that one Co2+ (bonded through S to a terminal OxS-) has a tetrahedral coordination sphere of four S atoms whilst the other (bon ded to a terminal Cl-) has a tetrahedral coordination sphere of three N and one Cl atoms.