Heterometallic cobalt(II)-titanium(IV) oxo cages; key building blocks for hybrid materials

The two new heterometallic cobalt(II)/titanium oxo cages octanuclear [Ti(7)O(5)(OEt)(19)(CoCl)] (1) and pentanuclear [Ti(4)O(OEt)(15)(CoCl)] (2) have been obtained via condensation reactions of Ti(OEt)(4) in the presence of CoCl(2). This simple methodology gives access to key well-defined molecular building blocks for Co-doped hybrid materials.