The Syntheses of [3]- and [4]Ruthenocenophanes

Abstract

Abstract [3]- and [4]ruthenocenophanes as well as other ruthenocene derivatives were synthesized. The preparation of ruthenocenes in this experiment required more forced reaction conditions than those of the corresponding ferrocenes. Two cyclopentadienyl rings of these ruthenocenophanes are found to tilt mutually, and the degree of the ring-tilting of [3]ruthenocenophane is greater than that of the [4] homolog.