The shortened transition metal-tellurium bonds in organometallic clusters

Alexander A. Pasynskii, Yuri V. Torubaev, Vladimir N. Grigor'Ev, Anton I. Blokhin, Max Herberhold, Pradeep Mathur

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The shortening of partly multiple M-Te (M = Mn, Fe, Co, Cr or W) bonds is observed for two classes of organometallic compounds: (1) formally electron-deficient species with additional donor-acceptor interaction between Te lone pairs and half-occupied d-orbitals of M; (2) formally electron-saturated species having additional dative interaction between M lone pairs and LUMO of Te. These compounds could be prepared by two main methods: (a) interaction of [CpMn(CO)2PhC(O)-]Li+ with Te proceeds via formation of intermediate {[CpMn(CO)2]2Te}2- which is further transformed into binuclear complex [CpMn(CO)2] 2Te(CH2Ph)2 or into trinuclear ditelluride cluster [CpMn(CO)2]3Te2 on one hand or to mixed-metal monotelluride clusters [CpMn(CO)2]2TeM(CO) 5 on another hand. (b) treatment of Fe(CO)5, CpMn(CO) 2(THF) or Me4C4Co(CO)2I with [PhTeI]4, PhTeI3 or PhTeI2HC = CPhI results in different PhTeI-containing complexes of Fe, Mn or Co. The molecular structures of all new compounds were studied by means of X-ray diffraction analyses and the mechanism of M-Te bond shortening is discussed.

Original languageEnglish
Pages (from-to)193-204
Number of pages12
JournalJournal of Cluster Science
Volume20
Issue number1
DOIs
StatePublished - 1 Mar 2009
Externally publishedYes

Keywords

  • Chromium
  • Cobalt
  • Cyclopentadienyl complexes
  • Iron
  • Manganese
  • Metal carbonyls
  • Metal tellurides
  • Mixed-metal clusters
  • Tungsten
  • X-ray analyses

ASJC Scopus subject areas

  • Biochemistry
  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics

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