The reduction of pentavalent group 5 compounds with KC8 or LiBH4: A potpourri of oxidation states

F. Albert Cotton, John H. Matonic, Carlos A. Murillo, Xiaoping Wang

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Attempts to reduce TaCl5 with KC8 or LiBH4 in the presence of lithium diphenylformamidinato (LiDPhF) or potassium pyridinethiolato (Kpyt) are described. At low temperature the reaction of TaCl5, KC8 and LiDPhF yields the mononuclear eight-coordinated compound Ta(DPhF)4 2 which was found to be isostructural with the niobium analog 1. At room temperature and in the presence of KC8 and Kpyt the isolated product was [K(THF)6][Ta(pyt)4] 3. Whenever the reactions were carried out with LiDPhF present in an excess of LiBH4, breakage of a C-N bond in the ligand occurred giving imido complexes, such as the mononuclear seven-coordinated Ta(NPh)(DPhF)3 4 or the dinuclear species Ta2(μ-NPh)2 (μ-DPhF)22-DPhF)2 5. All compounds, 1-5, have been characterized by X-ray crystallographic methods and the results are presented here.

Original languageEnglish
Pages (from-to)711-720
Number of pages10
JournalBulletin de la Societe Chimique de France
Volume133
Issue number7-8
StatePublished - 1996
Externally publishedYes

Keywords

  • Formamidinato
  • Imido
  • Pyridinethiolato
  • Reduction
  • Tantalum niobium

Fingerprint

Dive into the research topics of 'The reduction of pentavalent group 5 compounds with KC8 or LiBH4: A potpourri of oxidation states'. Together they form a unique fingerprint.

Cite this