Functionalized 1,1-Ethene Dithiolates as Ligands, V [1]. Synthesis and Crystal Structure of Palladium(II) and Platinum(II) Complexes with Dithioylidene Barbituric Acid Ligands. Molecular Structure of a 2,6-Diaminopyridine-Platinum(II) Barbiturate Complex

Author:

Weigand Wolfgang1,Plener Veronika1,Nöth Heinrich2,Krossing Ingo2,Knizek Jörg2,Schmidt Martin2

Affiliation:

1. Institut für Anorganische und Analytische Chemie der Friedrich-Schiller-Universität Jena, August-Bebel-Straße 2, D-07743 Jena

2. Institut für Anorganische Chemie der Ludwig-Maximilians-Universität München, Meiserstraße 1, D-80333 München

Abstract

Abstract The 1,1-ethene dithiolato ligands (dithioylidene barbituric acids) 2a-f react with palladium(II) and platinum(II) compounds L2MCI2 [M = Pd, Pt; L = PEt3, PBu3, PPh3, 1/2 dppe, 1/2 (-)-DIOP, 1/2 2,9-dimethyl phenanthroline] to give the 1,1-ethene dithiolato metal complexes . Compound 4a forms a 1:1 adduct (8) with 2,6-diaminopyridine. The compounds were characterised on the basis of their IR and NMR (1H, 13C, 31P) spectra. Complexes 4a, 4c, and 5a were further studied by X-ray structural analysis. The barbituric unit in 4a undergoes self-assembly through multiple hydrogen-bonding with complementary 2 ,6-diaminopyridine yielding the supramolecular complex 8

Publisher

Walter de Gruyter GmbH

Subject

General Chemistry

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