Activation of methanol in the reaction of [Fe₃(CO)₁₂] with 1-phenylprop-2-yn-1-ol; crystal structures of and chemical relationships between [Fe₃(CO)₉(µ-CO){(C=C =C(H)Ph}] and [Fe₂(CO)₆{Ph(H)CCCHC(OMe)O}]

Abstract

The complexes [Fe₃(CO)₉(µ-CO){C=C=C(H)Ph }] and [Fe₂(CO)₆{Ph(H)CCCHC(OMe)O}] have been obtained in low yields from reaction of 1-phenylprop-2-yn-1-ol with [Fe₃(CO)₁₂] (‘stabilized’ with methanol), together with other oily derivatives, difficult to characterize. Their solid-state structures have been determined using X-ray diffraction techniques. The first reacts with excess of methanol to form the second. However, the yields of the latter are always low irrespective of the amount of methanol used. Experiments showed that this reaction also occurs on the TLC plates used for the chromatographic separation of the complexes. This behaviour is discussed.

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