Synthesis and properties of substituted thorocenes

Article abstract of DOI:10.1021/ic50217a004

Disubstituted bis(cyclooctatetraene)thorium(I) (thorocene) complexes have been prepared. Unlike thorocene itself, these derivatives are soluble in organic solvents. Proton and ¹³C NMR spectra of these air-sensitive diamagnetic compounds show a significant decrease in electron density in the rings relative to dipotassium cyclooctatetraene salts. The chemistry of thorocenes and uranocenes is compared. Like uranocenes, thorocenes do not undergo facile ligand-exchange reactions with cyclooctatetraenes; both, however, do give rapid exchange with cyclooctatetraene dianions.