Group IV Mixed Sandwich Compounds: Synthesis of Pentamethylcyclopentadienyl-Titanium, -Zirconium and -Hafnium Cycloheptatrienyl and Cyclooctatetraene Complexes

J. Blenkers, P. Bruin, J.H. Teuben

Research output: Contribution to journalArticleAcademic

31 Citations (Scopus)
364 Downloads (Pure)


The first complete series of Group IV sandwich complexes Cp*MCHT (M = Ti, Zr, Hf) (Cp* = η5-C5Me5, CHT = η7-C7H7) has been made and characterized. Cp*HfCHT is the first reported sandwich compound of hafnium. The d1, η8-C8H8(COT) complex Cp*MCOT were also synthesised similarly for M = Ti, Zr, but the complexes with M = Hf was not obtained; the failure to obtain Cp*HfCOT is ascribed to kinetic factors. Cp*ZrCOT is the first thermally-stable paramagnetic organozirconium(III) compound isolated in the solid state. The IR, 1H, 13C NMR, ESR and electronic absorption spectra are discussed.
Original languageEnglish
Number of pages7
JournalJournal of Organometallic Chemistry
Issue number1
Publication statusPublished - 1985

Cite this