Novel double alkoxides of titanium(IV) and iron(II)/(III): synthetic, structural and spectroscopic studies

Giovana G. Nunes; Dayane M. Reis; Priscila T. Amorim; Eduardo L. Sá; Antonio S. Mangrich; David J. Evans; Peter B. Hitchcock; G. Jeffery Leigh; Fábio S. Nunes; Jaísa F. Soares

doi:10.1039/B111517K

Novel double alkoxides of titanium(IV) and iron(II)/(III): synthetic, structural and spectroscopic studies

Giovana G. Nunes,^a Dayane M. Reis,^a Priscila T. Amorim,^a Eduardo L. Sá,^a Antonio S. Mangrich,^a David J. Evans,^b Peter B. Hitchcock,^c G. Jeffery Leigh,^c Fábio S. Nunes^a and Jaísa F. Soares*^a

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^a Departamento de Química, Universidade Federal do Paraná (UFPR), Centro Politécnico, Jardim das Américas, Curitiba-PR, Brazil
E-mail: jaisa@quimica.ufpr.br
Fax: +55 41 361 3186
Tel: +55 41 361 3180

^b Department of Biological Chemistry, John Innes Centre, Colney, Norwich, UK

^c School of Chemistry, Physics and Environmental Science (CPES) University of Sussex, Brighton, UK

Abstract

The first structurally characterised titanium and iron polynuclear isopropoxides [FeCl{Ti₂(OPrⁱ)₉}], 1, and [Ti₃(OMe)₂(OPrⁱ)₉][Fe₄TiCl₄(O)(OPrⁱ)₉], 2, have been prepared from 2 : 1 : 1 mixtures of [Ti(OPrⁱ)₄], K(OPrⁱ) and FeCl₂. Their identity was confirmed by a number of chemical and physical methods including X-ray diffractometry. Semiempirical quantum mechanical calculations were consistent with an S = 2 ground state for 1. Structural and spectroscopic data support a mixed-valence formulation for the unique {Fe₄Ti} anion in 2.

New Journal of Chemistry

Novel double alkoxides of titanium(IV) and iron(II)/(III): synthetic, structural and spectroscopic studies

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Novel double alkoxides of titanium(IV) and iron(II)/(III): synthetic, structural and spectroscopic studies

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