Abstract
The title complex, [Hf(C29H41N2)Cl3], was synthesized from HfCl4 and HC[C(Me)N(iPr2C6H3)]2Li(Et2O) in toluene. The structure is isotypic with those of TiIV and ZrIV 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 HfIV 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.
Highlights
Related literature For complexes bearing -diketiminate ligands, see: BourgetMerle et al (2002); Hamaki et al (2006)
The HfIV ion has slightly distorted square-pyramidal geometry surrounded by two N atoms from the -diketiminate ligand and by three ClÀ anions
For the synthesis of the precursor of the -diketiminate in the title compound, see: Stender et al (2001)
Summary
The title complex, [Hf(C29H41N2)Cl3], was synthesized from HfCl4 and HC[C(Me)N(iPr2C6H3)]2Li(Et2O) in toluene. The structure is isotypic with those of TiIV and ZrIV complexes reported previously [Nikiforov et al (2007). There is a crystallographic mirror plane containing the Hf atom, one chloride ligand and the central diketiminate C atom. The HfIV ion has slightly distorted square-pyramidal geometry surrounded by two N atoms from the -diketiminate ligand and by three ClÀ anions. Related literature For complexes bearing -diketiminate ligands, see: BourgetMerle et al (2002); Hamaki et al (2006). For isotypic TiIV and ZrIV complexes, see: Nikiforov et al (2007) and Kakaliou et al (1999), respectively. Crystal data [Hf(C29H41N2)Cl3] Mr = 702.51 Orthorhombic, Pnma a = 13.980 (3) Ab = 21.808 (4) Ac = 9.8492 (16) A
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