Studies on organolanthanide complexes: VIII. Synthesis and thermal decomposition of new σ-bonded 1,1′-trimethylenedicyclopentadienyl-early lanthanide complexes

Abstract

1,1′-Trimethylenedicyclopentadienyl-early lanthanide chlorides, [C 5H 4CH 2) 3-C 5H 4]LnCl · THF, in THF at −70°C reacted with aryllithium or alkyllithium, producing seven new THF solvated LnC σ-bonded 1,1′-trimethylenedicyclopentadienyl-early lanthanide complexes. The yttrium analogue was also synthesized. Their structures were determined by elemental analysis, infrared spectra, mass spectra, 1H NMR and thermoanalyses. The thermal decomposition of the complexes obtained was studied at ambient temperature or 100°C.