Abstract
The first part of this work consisted of a study of the coordination chemistry of aromatic (P,S) and (P,O) heterodonor phosphanes with Cr(CO)
6
, Mo(CO)
6
and W(CO)
6
. The (P,S) donor ligands having one or two
o
-thiomethoxyphenyl groups, preferred bidentate coordination mode, while the (P,O) donor ligands, having one, two or three
o
-methoxyphenyls, formed monodentate phosphorus bound complexes. Steric and electronic parameters affecting the coordination chemistry of the phosphanes are discussed for the monodentate complexes.
In the second part, triphenylphosphane and 2- and 4-pyridyldiphenylphosphane substituted tungsten tetracarbonyl
derivatives was prepared, and attractive intramolecular interactions between the phosphane ligands were studied for
both the neutral and the protonated complexes. Hydrogen bonding, π
-stacking and cation-π
bonding interactions were established, and observed to influence the
cis/trans
isomerism of the complexes.
Cis/trans
isomerism could be tuned by protonation, and deprotonation of the pyridyldiphenylphosphane derivatives.
All the complexes were characterised by
1
H,
13
C-{
1
H} and
31
P-{
1
H} NMR spectroscopy, X-ray crystallography, IR spectroscopy, and either elemental analysis or mass spectroscopy.
| Identifer | oai:union.ndltd.org:oulo.fi/oai:oulu.fi:isbn951-42-5986-6 |
| Date | 14 May 2001 |
| Creators | Hirsivaara, L. (Leeni) |
| Publisher | University of Oulu |
| Source Sets | University of Oulu |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/doctoralThesis, info:eu-repo/semantics/publishedVersion |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess, © University of Oulu, 2001 |
| Relation | info:eu-repo/semantics/altIdentifier/pissn/0355-3191, info:eu-repo/semantics/altIdentifier/eissn/1796-220X |
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