Inorganic compounds containing the trifluoroacetate group. Part V. Mono- and di-adducts of binuclear molybdenum(II) trifluoroacetates

Abstract

Molybdenum(II) trifluoroacetate adducts [Mo₂(O₂CCF₃)₄X_n]^n–(n= 1, X = Cl, Br, I, O₂CCF₃, or SnCl₃; n= 2, X = Br or I) have been synthesised and characterised by i.r., Raman, and u.v.–visible spectroscopy. The metal–metal stretching frequencies occur in the range 382–366 cm^–1, that of a monoadduct being higher than that of the corresponding diadduct. The effect of addended ligands on the Mo–Mo bond in compounds of this type is discussed in the light of these and other data. The new substituted derivatives [Et₄N]₂[Mo₂(O₂CCF₃)₃Cl₃] and [Et₄N]₄[Mo₂(CN)₈] have been characterised.