Formation of novel P-functionalized ligands by insertion reactions into the ZrP bond of Cp 2°ZrCl(PHCy) (Cp° η5-C 5EtMe 4 Cy = cyclohexyl)

Abstract

Cp° 2ZrCl 2 (Cp° = η 5-C 5EtMe 4) reacts with LiPHCy (Cy = cyclohexyl) with the formation of Cp° 2ZrCl(PHCy) ( 1). Compound 1 undergoes insertion of CS 2 or PhNCS into the ZrP bond, yielding Cp° 2ZrCl( η 2-S 2CPHCy) ( 2) and Cp° 2ZrCl η 2-SC (PHCy)NPh ( 3). Compounds 1–3 were characterized spectroscopically (IR, NMR, MS) and crystal structure determinations were carried out on 1 and 3, showing an η 2-bonding mode of the SC(PHCy)NPh (S,N) ligand in the latter.