Crystal structure of (1,3-di-tert-butyl-η⁵-cyclopentadienyl)trimethylhafnium(IV)

Abstract

The mol­ecule of the title organometallic hafnium(IV) com­pound, [Hf(CH3)3(C13H21)] or [HfMe3(η5-C5H3-1,3-tBu2)], adopts the classical three-legged piano-stool geometry for mono­cyclo­penta­dienylhafnium(IV) derivatives with the three methyl groups bonded to the Hf(IV) atom at the legs. The C atoms of the two tert-butyl group bonded to the cyclo­penta­dienyl (Cp) ring are 0.132 (5) and 0.154 (6) Å above the Cp least-squares plane. There are no significant inter­molecular inter­actions present between the mol­ecules in the crystal structure.

Structural Chemistry of Titanium (IV) Oxo Clusters, Part 2: Clusters without Carboxylate or Phosphonate Ligands

“…The structure of another cyclopentadienyl derivative, viz . Ti 6 O 9 Cp* 6 , [88] consists of two Ti 3 O 4 rings which are connected via a μ 2 ‐O. Each Ti atom is bonded to three μ 2 ‐O and a Cp* ligand.…”