Group 13 cation formation with a potentially tridentate ligand

Miguel Angel Muñoz-Hernández, Timothy S. Keizer, Sean Parkin, Brian Patrick, David A. Atwood

Research output: Contribution to journalArticlepeer-review

57 Scopus citations


A potentially tridentate ligand, Phensal(tBu)H3, was prepared by the condensation of 1 equiv of phenylenediamine with 3,5-di-tert-butylsalicylaldehyde. When 1 equiv of this new ligand is added to AlMe3, [[Phensal(tBu)HAlMe]]2 (1) results. In contrast, this reaction with GaMe3 produces [Phensal(tBu)H2]GaMe2 (2). When 1 or 2 equiv of Phensal(tBu)H3 is combined with Et2AlCl, the complex [Phensal(tBu)]2AlCl (3) forms. However the same reaction with Me2GaCl leads to [Phensal(tBu)H2]Ga(Me)Cl (4). A cationic complex, {[Phensal(tBu)]2Al}+Cl- (5), is formed when 3 is dissolved in MeOH. The MeOH apparently mediates the formation of the cation but does not coordinate the cationic metal. When the solvent is removed, 5 reverts back to neutral 3. When 3 is combined with GaCl3 in toluene, another cationic complex, {[Phensal(tBu)H2]2Al}+GaCl4 - (6), is formed. In a similar manner, {[Phensal(tBu)H2]2Al}+Me2AlC l2- (7) is formed by adding Me2AlCl to 3. The compounds were characterized by mp, elemental analyses, IR, 1H and 27Al NMR, and in the case of 2, 5, and 6 single-crystal X-ray analysis.

Original languageEnglish
Pages (from-to)4416-4421
Number of pages6
Issue number21
StatePublished - Oct 2000

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry


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