Hydrogen-bonded adducts formed from platinum(II) and palladium(II) thiosalicylate complexes [(Ph 3E) 2M(SC 6H 4CO 2)] (E=P, As) and triethylammonium or pyridinium ions; X-ray crystal structure of [(Ph 3P) 2Pt(SC 6H 4CO 2)⋯HNEt 3] +[BPh 4]

• Published in: Inorganica Chimica Acta Vol. 346; pp. 7 - 11
• Main Authors: Henderson, William, Nicholson, Brian K
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 25.03.2003
• Subjects: Crystal structures; palladium(II) thiosalicylate complexes; Platinum(II) complexes; Crystal structures; Platinum(II) complexes; palladium(II) thiosalicylate complexes
• ISSN: 0020-1693; 1873-3255
• DOI: 10.1016/S0020-1693(02)01380-4

One-pot reactions of [MCl 2(cod)] (cod= cyclo-octa-1,5-diene; M=Pt, Pd) with two equiv of PPh 3 or AsPh 3, one equiv of thiosalicylic acid, and an excess of triethylamine base, followed by the addition of excess Na[BPh 4] to the hot reaction mixture gives complexes [(Ph 3E) 2M(SC 6H 4CO 2)⋯HNEt 3] +[BPh 4] − (E=P, As). Analogous pyridinium and platinum–thioglycolate [(Ph 3P) 2Pt(SCH 2CO 2)] derivatives were also prepared. An X-ray crystal structure determination on [(Ph 3P) 2Pt(SC 6H 4CO 2)⋯HNEt 3] +[BPh 4] − reveals hydrogen-bonding between the NH proton and the carbonyl group of the thiosalicylate ligand, the major effect of which is to flatten the platinum–thiosalicylate moiety. NMR spectroscopic data indicate that the hydrogen-bonding interaction persists in solution. Platinum and palladium thiosalicylate complexes [(Ph 3E) 2M(SC 6H 4CO 2)(PPh 3) 2] (M=Pt, Pd; E=P, As) form crystalline hydrogen-bonded adducts with triethylammonium and pyridinium cations as their tetraphenylborate salts. An X-ray structure determination reveals hydrogen-bonding between the NH proton and the thiosalicylate carbonyl oxygen.