Structural characterization of dinuclear Ti(IV) complexes of rigid tetradentate dianionic diamine bis(phenolato) ligands; effect of steric bulk on coordination features

Cesar M. Manna, Michal Shavit, Edit Y. Tshuva*

*Corresponding author for this work

Research output: Contribution to journalShort surveypeer-review

21 Scopus citations

Abstract

A small difference in diamine bis(phenolato) ligands, namely an additional single methylene unit, directs formation of dinuclear Ti(IV) complexes rather than mononuclear ones as characterized by X-ray crystallography. Varying steric bulk of the ligand affects the coordination number in the dinuclear complexes and the ligand to metal ratio. A ligand with reduced steric bulk leads to a L2Ti2(OiPr)4 type complex featuring two octahedral metal centers bridged only by the two phenolato ligands, whereas a bulky ligand leads to a Ti2(μ-L1)(μ-OiPr)2(OiPr)4 type complex with a single chelating ligand, two bridging isopropoxo ligands, and two terminal isopropoxo groups on each of the two metal centers, which are of trigonal bi-pyramidal geometry.

Original languageAmerican English
Pages (from-to)3947-3950
Number of pages4
JournalJournal of Organometallic Chemistry
Volume693
Issue number26
DOIs
StatePublished - 15 Dec 2008

Keywords

  • Coordination modes
  • Dinuclear compounds
  • O ligands
  • Titanium(IV)

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