New Fe(III) and Os(VI) silsesquioxanes

Patricia A. Shapley, W. Stuart Bigham, Michael T. Hay

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Abstract

The high-spin iron(III) silsesquioxane complexes [N(nBu)4][(cyclo-C5H9) 7Si7O12FeCl] and [N(nBu)4][(cyclo-C5H9) 7Si7O12Fe(OSiMe3)] result from the reaction of (cyclo-C5H9)7Si7O9 (OH)3 with either [N(nBu)4][FeCl4] or [N(nBu)4][Fe(OSiMe3)4]. Substitution of the terminal chloride or (trimethyl)silanolate ligands with tert-butoxide produces [N(nBu)4][(cyclo-C5H9) 7Si7O12Fe(OCMe3)]. Similar substitution reactions with the methyl ester of N-acetylcysteine produce [N(nBu)4][(cyclo-C5H9) 7Si7O12Fe(SCH2CH(NHCOCH 3)CO2Me)]. A dimeric complex, [(cyclo-C5H9)7Si7O 12Fe(NEt3)]2, forms in the reaction of (cyclo-C5H9)7Si7O9 (OH)3 with NEt3 and FeCl3. The reaction between (cyclo-C5H9)7Si7O9 (OH)2(OSiMe3) and [Ph4P][Os(N)Cl 4] forms [PPh4][(cyclo-C5H9)7Si 7O11(OSiMe3)Os(N)Cl2], a square- pyramidal Os(VI) complex with a bidentate siloxy ligand.

Original languageEnglish (US)
Pages (from-to)255-260
Number of pages6
JournalInorganica Chimica Acta
Volume345
DOIs
Publication statusPublished - Mar 10 2003

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All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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