Trinculear species in vanadium(II) chemistry

The triangulo-{V3Cl3} unit is shown to form easily in solutions from mononuclear vanadium(II) compounds such as [VCl2(tmeda)2] and structural studies show that this unit is contained in a trigonal bipyramidal arrangement with either chloride ions or methoxide ions at the apices, as in [V3Cl3(µ3-Cl)2(tmeda)3]+, [V3Cl3(µ3-OMe)2(tmeda)3]+ and [V3Cl3(µ3-OMe)2(depe)3]+.