Multinuclear Variable Temperature NMR Studies on Cyanide, Water and Hydroxyl Group Scrambling on Halogenation of K2[Pt(CN)4] and Related Reactions

Abstract

<em>¹⁹⁵</em><em>Pt and ¹H NMR has been used to show that addition of chlorine and bromine to [Pt(CN)₄]^2_ in presence of perchloric acid in water results in cyanide and water scrambling with formation of eleven complexes of the type [Pt(CN)_4-nCl(H₂O)_n+1]^(n-1)+ (n=0, 1, 2, 3, 4). Addition of NBu₄OH to this solution gives (NBu₄)₂[Pt(CN)₄Cl(OH)]. NMR measurements in acetone also show cyanide and hydroxyl group scrambling with formation of complexes of the type [Pt(CN)_4-nCl(OH)_n+1]^2-, (n=0, 1, 2, 3, 4).</em>