| | 1 | Author
| CorneliusG. Kreiter, Ulrich Koemm | Requires cookie* | | | Title
| Gehinderte Ligandbewegungen in Übergangsmetallkomplexen, XIX [1] Oktaedrische Wolfram-Olefin-Komplexe mit Bisphospbinoethan-Liganden Hindered Ligand Motions in Transition Metal Complexes, XIX [I] Octahedral Tungsten Olefin Complexes with Bisphosphinoethane Ligands  | | | | Abstract
| (OC-6-32)-W(CO)3[(CH3)2PC2H4P(CH3)2](olefin) complexes (9-14) were prepared photochemicallyfromW(CO)4[(CH3)2PC2H4P(CH3)2](l)viaW(CO)3[(CH3)2PC2H4P(CH3)2]-(THF) (2) and the electron poor olefins dimethyl malonate(3), fumarate (4), methylfuma-rate (5), fiuorofumarate (6), chlorofumarate (7) and bromofumarate (8). The stereoche-mistry of 9-14 was elucidated by IR and NMR spectroscopy. The hindered rotations of the olefin ligands in 9-14 were studied by D-NMR spectroscopy. 11-14 form two diastereomeric isomers when the olefin rotation is freezed. The spectroscopic behaviour of the dimethyl fumarate complex 10 gives unambiguous proof for the rotation of the olefin ligand around the metal-olefin-bond. Alternative motions are ruled out. | | | |
Reference
| Z. Naturforsch. 38b, 943—952 (1983); eingegangen am 7. Februar/15. März 1983 | | | |
Published
| 1983 | | | |
Keywords
| Olefin Complexes, Synthesis, Ligand Rotations | | | |
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| default:Reihe_B/38/ZNB-1983-38b-0943.pdf | | | | Identifier
| ZNB-1983-38b-0943 | | | | Volume
| 38 | |
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