Displacement, proton transfer, or hydrolysis? Mechanistic control of acetonitrile reactivity by stepwise solvation of reactants

(10) It is not possible from the IR data to make a definitive statement at this time concerning the structure of MnHz in Xe. All that one can say, is that the two slightly different forms of MnH, in Xe (multiple-site effect or geometrical isomers) display no evidence for a symmetrical IR active v(MnH2) stretching mode. This could be taken to indicate linearity for both forms. However, caution must be exercised here, as the sym v(MnH2) mode of a bent MnH2, B molecule could be overlapped by the asym s(MnH2) mode of the A form, and/or A and B might be only slightly bent yielding an IR sym v(MnH2) band that remains below the detection limit of our experiment. Raman data will help clarify this important point. (1 !) MnH, can also be generated in solid Ar by using similar experimental techniques.