Issue 17, 2008

Diimine supported group 10 hydroxo, oxo, amido, and imido complexes

Abstract

A series of L2 = diimine (Bian = bis(3,5-diisopropylphenylimino)acenapthene, But2bpy = 4,4′-di-tert-butyl-2,2′-bipyridine) supported aqua, hydroxo, oxo, amido, imido, and mixed complexes have been prepared. Deprotonation of [L2Pt(μ-OH)]22+ with 1,8-bis(dimethylamino)naphthalene, NaH, or KOH yields [(L2Pt)2(μ-OH)(μ-O)]+ as purple (Bian) or red (But2bpy) solids. Excess KOH gives dark blue [(Bian)Pt(μ-O)]2. MeOTf addition to [(But2bpy)2Pt2(μ-OH)(μ-O)]+ gives [(But2bpy)2Pt2(μ-OH)(μ-OMe)]2+ while [(Bian)Pt(μ-O)]2 yields [(Bian)2Pt2(μ-OMe)(μ-O)]+. Treatment of [(Bian)Pt(μ-O)]2 with “(Ph3P)Au+” gives deep purple [(Bian)2Pt2(μ-O)(μ-OAuPPh3)]+ while (COD)Pt(OTf)2 gives a low yield of [(Bian)Pt3(μ-OH)3(COD)2](OTf)3. Ni(But2bpy)Cl2 and [(Ph3PAu)3(μ-O)]+ in a 3 : 2 ratio yield red [Ni3(But2bpy)3(μ-O)2]2+. M(But2bpy)Cl2 (M = Pd, Pt) and [(Ph3PAu)3(μ-O)]+ give [M(But2bpy)(μ-OAuPPh3)]22+ and [Pd4(But2bpy)4(μ-OAuPPh3)]3+. Addition of ArNH2 to [M(But2bpy)(μ-OH)]22+ (M = Pd, Pt) gives [Pt2(But2bpy)2(μ-NHAr)(μ-OH)]2+ (Ar = Ph, 4-tol, 4-C6H4NO2) and [M(But2bpy)(μ-NHAr)]22+ (Ar = Ph, tol). Deprotonation of [Pt2(But2bpy)2(μ-NH-tol)(μ-OH)]2+ with 1,8-bis(dimethylamino)naphthalene or NaH gives [Pt2(But2bpy)2(μ-NH-tol)(μ-O)]+. Deprotonation of [Pt(But2bpy)(μ-NH-tol)]22+ with KOBut gives deep green [Pt(But2bpy)(μ-N-tol)]2. The triflate complexes M(But2bpy)(OTf)2 (M = Pd, Pt) are obtained from M(But2bpy)Cl2 and AgOTf. Treatment of Pt(But2bpy)(OTf)2 with water gives the aqua complex [Pt(But2bpy)(H2O)2](OTf)2.

Graphical abstract: Diimine supported group 10 hydroxo, oxo, amido, and imido complexes

Supplementary files

Article information

Article type
Paper
Submitted
11 Oct 2007
Accepted
29 Jan 2008
First published
04 Mar 2008

Dalton Trans., 2008, 2314-2327

Diimine supported group 10 hydroxo, oxo, amido, and imido complexes

A. Singh, U. Anandhi, M. A. Cinellu and P. R. Sharp, Dalton Trans., 2008, 2314 DOI: 10.1039/B715663D

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