Abstract The thermal decomposition of neophyltransition metal complexes has been investigated, in particular, the products of reductive elimination and the symmetry aspects of this reaction. Bineophyl (1) was generally the major product from reproductive elimination. A number of other dimeric products were formed, via routes which must involve transmetallation, α-elimination and, in a few cases, radical formation. t-Butylbenzene is the major monomeric product. Products from reactions with added ligands such as carbon monoxide, ethen and triphenylphospine were also observed.