DISSOCIATION OF SOLVENT MOLECULES FROM MO2O3I2(DTC)2(SOLV)2 IN SOLUTIONS OF NON-COORDINATING SOLVENTS

Mo2O3I2(dtc)2(THF)2 reacts with solvents in various ways depending on their coordinating ability. With weakly coordinating solvents the coordinatively unsaturated Mo2O3I2(dtc)2 results because the THF molecules have been removed. With moderately coordinating solvents the THF is replaced by solvent molecules resulting in Mo2O3I2(dtc)2(solv)2. However, NMR and electronic absorption studies indicate that in CH2Cl2 and CHCl3 solution the coordinated solvent molecules from the Mo2O3I2(dtc)2(solv)2 species are dissociated. With the strongly coordinating solvent pyridine a complex results which has no MoO bonds. © 1990.