Dithiocarbamate-gold complexes

AuCl3(tht) [129], AuX3[S(benzyl)2)2] (X = Cl, Br) [130] and AuC13 (thian-threne). Various dithiocarbamates and dithiolene complexes have been made, some by oxidation of gold(I) complexes (Figure 4.26). 

Bardaji, M Laguna, A., Laguna, M. and Merchan, F. (1994) Methyl dithiocarbamate gold(l) and gold(lll) complexes. Synthesis and reactivity with amines. Inorganica Chimica Acta, 215 (1-2), 215-218. 

Dithiocarbamate complexes of gold and their derivatives have been increasingly studied in recent years, being prepared with both gold(I) and gold(III). Complexes have been made featuring both monodentate and bidentate dithiocarbamate ligands. 

Arias, J., Baradaji, M. and Espinet, P. (2008) Mononuclear, dinuclear, and hexanuclear gold(l) complexes with (aza-15-crown-5) Dithiocarbamate. Inorganic Chemistry, 47, 1597-1606. 

Dimeric gold(I) complexes with dithiocarbamate ligands possess a strong propensity to aggregate and form chains with short intermolecular Au Au contacts, they have been known for a long time but new structural characterizations have come into light. Thus compounds of the type... 

Another example of an eight-membered metallocycle containing Au(II) centers is the dithiocarbamate complex (9) (20), obtained from the gold(I) dithiocarbamate complex (8) with halogens or pseudohalogens at -78° in C. However, these compounds disproportionate to form mixed-valence salts (10). It was shown that the vCs band of the coordinated dithiocarbamate is sensitive to the oxidation state of the gold, increasing in the order 1495, 1523, and 1547 cm-1 for the Au(I), Au(II), and Au(III) complexes, respectively (20). 

A dinuclear selenide complex anion [Au2(M-Se)2(Se4)2] is the product of the reaction" between [AuCN] and Na2 Ses. Square-planar gold(IIl) complexes are readily formed by a variety of bidentate sulfur-donor ligands such as toluene-1,2-dithiolate, maleonitriledithiolate, and dithiocarbamate. On oxidation with CI2 or Br2, [ Au(S2CNR)2 2] forms Au -Au complexes, which may be oxidized further to an Au complex. 

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