Abstract
Reaction of [WI2(CO)(NCMe) (eta(2)-MeC2Ph)(2)] with a slight excess of Ph2P(CH2)PPh2 gives the mono(1-phenylpropyne) complex [WI2(CO) {Ph2P(CH2)PPh2} (eta(2)-MeC2Ph)] (1) in high yield. The structure of 1 has been determined by single crystal X-ray diffraction. The structure can best be described as a distorted octahedron with the two phosphorus atoms of the Ph2P(CH2) PPh2 ligand trans to an iodo- and a 1-phenylpropyne ligand in the equatorial plane and the other iodo and carbonyl groups in the axial sites. The two bond lengths of the two W-I and those of the two W-P bonds are quite different reflecting the nature of the trans-ligands. Variable temperature P-31 NMR studies have been carried out on 1, which has enabled the activation energy for alkyne rotation, to be calculated. (C) 1998 Elsevier Science S.A. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 65-68 |
| Number of pages | 4 |
| Journal | Inorganica Chimica Acta |
| Volume | 279 |
| Issue number | 1 |
| Publication status | Published - 15 Sept 1998 |
Keywords / Materials (for Non-textual outputs)
- crystal structures
- tungsten complexes
- alkyne complexes
- carbonyl complexes
- fluxionality
- RAY CRYSTAL-STRUCTURE
- ALKYNE LIGANDS
- BIS(ALKYNE) COMPLEXES
- SPECTRAL PROPERTIES
- MOLYBDENUM(II)
- TUNGSTEN(II)
- DONORS
- PH