Formation of a novel yttrium hydride with bridging 1,2,3,4-tetramethylfulvene and hydride ligands
Abstract
Thermolysis of [(C5Me5)2YH]2 in n-octane or benzene yields (C5Me5)2Y(µ-H)Y(η5-C5Me4CH2)(C5Me5), a bis-yttrium-monohydride in which a tetramethylfulvene ligand bridges in a σ–η5 manner between the yttrium atoms; the hydride bridge is asymmetric showing two yttrium–hydrogen coupling constants in the 1H n.m.r. spectrum.