ISSN:
0009-2940
Keywords:
fac-[Ru(O2CCH3)2(PPh3)3] · 2 CH3CO2H
;
Tris(triphenylphosphane)ruthenium(II)
;
Polymerization
;
Bicyclo[2.2.1]hept-2-ene
;
Ruthenium complexes
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
[Ru2(μ-O2CCH3)4(O2CCH3)] reacts with excess triphenylphosphane in acetic acid to give fac-[Ru(O2CCH3)2(PPh3)3] · 2CH3CO2H (1), which crystallizes in the triclinic space group P 1- with Z=2. The three phosphane ligands are in the sterically congested facial configuration, and the distorted octahedral geometry around the metal is completed by a unidentate and chelating acetate. A variable temperature 31P{1H}-NMR study of the complex in CH2Cl2 showed the three phosphanes to be inequivalent at low temperature. On raising the temperature two separate coalescence processes are observed, ultimately making all of the phosphanes equivalent at room temperature. Complex 1 shows slight catalytic activity for the ring-opening polymerization of bicyclo[2.2.1]hept-2-ene (norbornene).
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19911241209
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