ISSN:
0044-2313
Keywords:
Monophosphine Platin(0) Complexes
;
SO2 Ligand
;
Vinylsilyl Ligands
;
Pt3 Cluster
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Reactivity of Monophosphine Platinum(0) Complexes with SO2.The addition reaction of (PPh3)Pt(ViSi) (ViSi = {η2-H2C=CHSiMe2}2O) (1) with SO2 gives within 30 min the red SO2 complex (PPh3)Pt(η2-H2C=CHSiMe2- OSiMe2CH=CH2)(SO2) (2). A reaction time of 24 h with SO2 leads to the elimination of the ViSi ligand, and the unstable monomeric intermediate (PPh3)Pt(SO2) cyclo- trimerizes to the stable cluster [Pt(PPh3)(SO2)]3 (3). 3 is also obtained within 30 min by the reaction of (PPh3)Pt(C2H4)2 (4) with SO2. The crystal structure of 3 has been determined; space group P21/n, Z = 4, a = 1 606.1(3), b = 1 019.3(1), c = 3 624.6(5) pm, β = 93.67°, R/Rw = 0.102/0.121.
Notes:
Die Reaktion von (PPh3)Pt(ViSi) (ViSi = {η2-H2C=CHSiMe2}2O) (1) mit SO2 führt nach 30 min unter Addition zum roten SO2-Komplex (PPh3)Pt(η2-H2C=CHSiMe2OSiMe2CH=CH2)(SO2) (2). Bei längerer Reaktionszeit (24 h) wird der ViSi-Ligand vollständig abgespalten und das instabile monomere Intermediat (PPh3)Pt(SO2) cyclotrimerisiert zum stabilen Cluster [Pt(PPh3)(SO2)]3 (3). Verwendet man (PPh3)Pt(C2H4)2 (4) als Edukt, entsteht 3 unter SO2-Atmosphäre innerhalb einer halben Stunde. 3 kristallisiert in der Raumgruppe P21/n, Z = 4, a = 1 606,1(3), b = 1 019,3(1), c = 3 624,6(5) pm, β = 93,67°, R/Rw = 0,102/0,121.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19936191028
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