Process for the preparation of organometallic compounds

Abstract

Abstract Compounds of the formula I …<IMAGE>… in which R is an anion C5H4R<1> or C9H7, R<1> is hydrogen, C1-C6-alkyl or halogen, R<2> is a pi -arene, X is a q-valent anion and q denotes 1, 2 or 3, are prepared by reaction of a ferrocene (derivative) (C5H4R<1>)Fe(C5H4R<3>) or (C9H7)2Fe, in which R<3> has one of the meanings of R<1>, with at least one mol of a pi -arene R<2>, followed, if desired, by exchange of the anion X<q(-)> in a manner known per se, the reaction of the ferrocene (derivative) being carried out in the presence of… a) at least 1.2 mol of a mixture of Al trihalide and Zr(IV) or Hf(IV) tetrahalide, if appropriate in the presence of a metallic reducing agent, at least 0.2 mol of Zr(IV) or Hf(IV) tetrahalide and at least 0.1 mol of Al trihalide being present, or the reaction of the ferrocene (derivative) being carried out in the presence of… b) at least 1.0 mol of a Zr(IV) or Hf(IV) tetrahalide as only Lewis acid in combination with at least 1.0 mol of a metallic reducing agent, the amounts given being based in each case on one mol of a ferrocene (derivative). …<??>The compounds of the formula I containing non-nucleophilic anions can be used as photoinitiators for cationically polymerisable compounds.

Inventors

• 👤 Vincent Dr. Desobry
• 👤 Hans Oskar Dr. Doggweiler

Bibliographic Details