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The title complex, [Hf(C 29 H 41 N 2 )Cl 3 ], was synthesized from HfCl 4  and HC[C(Me)N(  i  Pr 2 C 6 H 3 )] 2 Li(Et 2 O) in toluene. The structure is isotypic with those of Ti IV  and Zr IV  complexes reported previously [Nikiforov  et al.  (2007  ▶ ).  Dalton Trans . pp. 4149–4159; Kakaliou  et al.  (1999  ▶ ).  Inorg. Chem .  38 , 5964–5977]. There is a crystallographic mirror plane containing the Hf atom, one chloride ligand and the central diketiminate C atom. The Hf IV  ion has slightly distorted square-pyramidal geometry surrounded by two N atoms from the β-diketiminate ligand and by three Cl −  anions. Coordination bond lengths are Hf—N = 2.181 (3) Å, and Hf—Cl = 2.3148 (15) and 2.3727 (12) Å.

Trichlorido{methyl[4-(methylimino)pent-2-en-2-yl]azanido-κ2N,N′}hafnium(IV)

Trichlorido{methyl[4-(methylimino)pent-2-en-2-yl]azanido-κ²N,N′}hafnium(IV)