Reactions of co-ordinated ligands. Part V. Reactions of triphenylmethyl tetrafluoroborate and fluoroboric acid with a variety of enyl metal complexes

Abstract
The electrophilic reagents triphenylmethyl tetrafluoroborate and fluoroboric acid react with the enyl complexes (C8H12acac)M(acac)(M = Pd and Pt), (C8H12ba) Pt(ba) and (C8H12dbm)M(dbm)(M = Pd and Pt) to give the cations [C8H12M(acac)]+, and [C8H12M(dbm)]+(acac, ba, and dbm are the conjugate bases of acetylacetone, benzoylacetone, and dibenzoylmethane). Other cations [(diene)M(diketone)]+(diene = C7H8 or C10H12, diketone = acac, ba, and dbm) are produced similarly. Electrophilic attack by triphenylmethyl tetrafluoroborate is selective and in the reaction with the isomers (C8H12acac)Pd(dbm) and (C8H12dbm)Pd(acac) the same cation [C8H12Pd(dbm)]+ is obtained. The halogen-bridged complexes (C8H12R)2M2Cl2(R = CH(COMe)2 or OMe) react with thallous cyclopentadienide (TICp) to give the orange oils (C8H12R)M (π-C5H5) and with various phosphine ligands (L) to give (C8H12R)M(L)Cl. These complexes also react with triphenylmethyl tetrafluoroborate to give the cations [C8H12M(π-C5H5)]+ and [C8H12M(L)Cl]+.

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