Ambient-condition nano-alumina formation through molecular control

Yuzhong Wang, Sonali Bhandari, Amitabha Mitra, Sean Parkin, Jerry Moore, David A. Atwood

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


When toluene solutions of the tetrametallic compound, [Al{μ-OEt) 2AlMe2}3] (1), are stirred in air at room temperature, pure amorphous nanoparticulate Al2O3 precipitates. The average particle size is 17.7 ± 7.4 nm. The tetrametallic core of 1, having the correct stoichiometry for alumina (2Al 2O3) appears to act as a template or nucleating site for the formation of alumina rather than the expected products of formula, AlOOH. The stability of the Al4O6 core of 1 was tested by combining it with six equivalents of Ph3SiOH. This resulted in [Al{μ-OEt)2Al(OSiPh3)2}3] (2). Upon exposure to air, compound 2 formed the hydroxide derivative [Al{μ-OH)2Al(OSiPh3)2}3] (3). This demonstrates that the tetrametallic core of 1 is stable to both peripheral derivatization as well as alcoholysis of the internal bridging groups.

Original languageEnglish
Pages (from-to)2937-2941
Number of pages5
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Issue number13-14
StatePublished - 2005

Bibliographical note

Funding Information:
Supported by Dirección General de Enseñanza Superior e Investigación Científica (MEC, grant PB98-0735).


  • Alkoxide
  • Alumina
  • Aluminum
  • Mitsubishi structure
  • Tetrametallic

ASJC Scopus subject areas

  • Inorganic Chemistry


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