ISSN:
1572-8862
Keywords:
gold
;
dithiocarbamate
;
tris(diphenylphosphino)methane
;
gold–gold interactions
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract The compounds [Au3(S2CNMe2)3{μ 3-(PPh2)3CH]} (1) and [Au3(S2CNMe2)(μ-S2CNMe2){μ 3-(PPh2)3CH}]ClO4 (2) are obtained by reaction of [Au3Cl3{μ 3-(PPh2)3CH}] with three equivalents of sodium dimethyldithiocarbamate or two equivalents of the same reagent in the presence of excess NaClO4. Reaction of 2 with the group 11 metal complexes [AuCl(tht)], CuCl or [Au(C6F5)(tht)] takes place with displacement of [M(S2CNMe2)]n (M=Cu, Au) and formation of the new complexes [Au3X(μ-S2CNMe2){μ 3-(PPh2)3CH}]ClO4 (X=Cl (3), X=C6F5 (4)); further reaction of 3 with [Ag(OClO3)(tht)] (tht=tetrahydrothiophene) affords the dicationic species [Au3(μ-S2CNMe2){μ 3-(PPh2)3CH}(tht)](ClO4)2 (5). Treatment of [Au3Cl3{μ 3-(PPh2)3CH}] with one equivalent of NaS2CNMe2 allows the substitution of only one chlorine atom, giving rise to the complex [Au3Cl2(S2CNMe2){μ 3-(PPh2)3CH}] (6), in which the dithiocarbamate ligand acts as monodentate rather than bidentate bridging as observed in compounds 3–5. The crystal structures of complexes 1 and 2 have been established by X-ray diffraction studies and show close gold–gold contacts.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1009068916229
