Concerning the Reaction of the Betain‐Like Compound O2CC(PPh3)2 with Tungsten‐Carbonyl Derivatives; Preparation and Crystal Structures of [(CO)5W{η1‐O2C2(PPh3)2}] and [(CO)4W{η2‐O2C2(PPh3)2}]
Authors:
- Wolfgang PetzWolfgang Petz
- Florian ÖxlerFÖFlorian Öxler
- Andreas BrandABAndreas Brand
- Bernhard NeumüllerBernhard Neumüller
- 27 February 2006
- journal article
- research article
- Published by Wiley in Zeitschrift für anorganische und allgemeine Chemie
- Vol. 632 (4) , 588-592
Abstract
The carbodiphosphorane CO2 adduct O2CC(PPh3)2 (1a) reacts with [(CO)5W(THF)] and [(CO)3W(NCEt)3] to produce the complexes [(CO)5W{η1‐O2CC(PPh3)2}] (2) and [(CO)4W{η2‐O2CC(PPh3)2}] (3), respectively. Whereas in 2 the betain‐like ligand is coordinated at the tungsten atom in a monodentate manner, in 3 it acts as a chelating ligand with formation of a WO2C four‐membered ring. As a by‐product during the reaction with the acetonitrile adduct also some crystals of the hydrolysis product [HC(PPh3)2]2[W6O19] · 3C2H4Cl2 (4 · 3C2H4Cl2) were isolated. All compounds could be characterized by X‐ray analyses and the usual spectroscopic methods.Keywords
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