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 language | English |
|---|---|
| Pages (from-to) | 193-204 |
| Number of pages | 12 |
| Journal | Journal of Cluster Science |
| Volume | 20 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1 Mar 2009 |
| Externally published | Yes |
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