A. Klein, K. Klinkhammer, T. Scheiring
Dec 12, 1999
Citations
0
Influential Citations
40
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Abstract Organometallic complexes of the type [(COD)PtMeL] (COD˚1,5-cyclooctadiene, L˚Cl, I, OH, Me, CH 2 C(O)CH 3 , C C Ph, pyridine, N -methyl pyrazinium) and the dinuclear complex [{(COD)PtMe} 2 (m-C C C C)] were prepared and charac-terised by 1 H-NMR spectroscopy. The crystal structures for the complexes with L˚Cl, OH and Me are reported. The complex[(COD)PtMe(OH)] is a unique example of a platinum complex containing an olefin and a hydroxy ligand on the same metalcentre. It reacts with C H acidic substrates to form Pt C bonds. Representative reactions with acetone, phenylacetylene and1,3-butadiyne and the corresponding products are reported. © 1999 Elsevier Science S.A. All rights reserved. Keywords :Crystal structure; Cyclooctadiene platinum complexes; Hydroxoplatinum(II) 1. Introduction Organoplatinum(II) complexes [(COD)PtRL] (R˚alkyl or aryl) with COD (1,5-cyclooctadiene) as aneasily exchangeable ligand have been known fordecades and are used as precursors for mono- andpolynuclear organometallic platinum(II) compounds[1–3]. They are also of interest for the generation oforganoplatinum reaction centres on catalyst surfacesfor heterogeneous catalysis [4] or as potential precur-sors for chemical vapour deposition (CVD) of platinum[5] and also as anti-tumour agents [6]. In view of therecent developments on the use of Group 10organometallics in catalysis [7], it is of interest toinvestigate the chemical and spectroscopic properties ofsome basic molecules. Therefore a series of compoundsof the type [(COD)PtMeL] was prepared and examined,with L representing a broad range of ligands includingweak s-donors (and p-donors) such as chlorine andiodine, coordinating solvents like acetone, THF orpyridine (with increasing donor capabilities in this se-ries) and also the strong p-acceptor ligand