Gold III Complexes

Other compounds that have been prepared include the dark-brown gold(III) complexes... 

Table 4.6 Selected electrode potentials for gold(I) and gold(III) complexes [AuCL"- ] 1 2n>+ and [Au(L"-)4](3-4n)+...

Thiols and other sulphur ligands can be used to reduce Au3+ to Au+ but gold(III) complexes can be made, for example, with tetramethylthiourea (tmu),... 

The Au-S bond length at 2.30 A is very similar to that in the gold(III) analogue (2.299-2.312 A) and other gold(III) complexes like Au(toluene-3,4-dithiolate) (2.31 A) suggesting substantial covalent character in the bond. 

An extensive chemistry is developing of dinuclear gold(III) complexes with phosphorus ylid ligands (Figure 4.41). As mentioned in section 4.19, gold(I) compounds can undergo one- or two-electron oxidative additions,... 

A variety of gold(III) complexes of carboxamido substituted heterocyclic ligands are obtained by reaction of [AuCh] with the appropriate ligands, these include [Au (N,N )Cl2j (HN,N =picolinamide) (IS) [70], [Au(N,N, N")Cl]Cl [N,N H,N" = N-(8-quinolyl)pyridine-2-carboxamide (16), N-(8-quinolyl)glycine-2-carboxamide (17) or N-(8-quinolyl)-L-alanine-2-carboxamide (18)] [71] (Figure 2.11). 

Henderson, W. (2006) The Chemistry of cydometallated gold(III) complexes with C,N-donor ligands. Advances in Organometallic Chemistry, 54, 207. 

Oyaizu, K., Ohtani, Y, Shiozawa, A., Sugawara, K, Saito, T. and Yuasa, M. (2005) Highly stable gold(III) complex with a hydantoin ligand in alkaline media. Inorganic Chemistry, 44, 6915. 

Carotti, S., Guerri, A., Mazzei, T., Messori, L., Mini, E. and Orioli, P. (1998) Gold(III) compounds as potential antitumor agents Cytotoxidty and DNA binding properties of some selected polyamine-gold(III) complexes. Inorganica Chimica Acta, 281, 90. 

Messori, L, Orioli, P., Tempi, C. and Marcon, G. (2001) Interactions of selected gold(III) complexes with calf thymus DNA. Biochemical and Biophysical Research Communications, 281, 352. 

Cao, L., Jennings, M.C. and Puddephatt, R.J. (2007) Amine-amide equilibrium in gold(III) complexes and a gold(III)-gold(I) aurophilic bond. Inorganic Chemistry,... 

C. and Marcon, G. (2002) Au2trien a dinudear gold(III) complex with unprecedented structural features. Chemical Communications, (6), 612. 

Crystal and molecular structure of a 14-7l-electron macrocydic gold(III) complex. Inorganic Chemistry, 21, 1681. 

Pitteri, B., Marangoni, G., Visentin, F., Bobbo, T., Bertolasi, V. and Gilli, P. (1999) Equilibrium and kinetic studies of (2,2 6, 2"-terpyridine)gold(III) complexes. Preparation and crystal structure of [Au(terpy)(0H)][C104]2. Journal of the Chemical Society, Dalton Transactions, (5), 677. 

Sanna, G., Pilo, M.I., Minghetti, G., Cinellu, M.A., Spano, N. and Seeber, R. (2000) Electrochemical properties of gold(III) complexes with 2,2 -bipyridine and oxygen ligands. Inorganica Chimica Acta, 310, 34. 

Calamai, P Guerri, A., Messori, L Orioli, P. and Speroni, G.P. (1999) Structure and DNA binding properties of the gold(III) complex [AuCl2(esal)]. Inorganica Chimica Acta, 285, 309. 

Only one anionic trihalopentafluorophenyl gold]III) complex with the formula [Au ]C6p5)X3[ has been described, NBu4[Au]C6F5)Br3[ [39], obtained by the oxidation of NBu4[Au]C6F5)Br[ with bromine. 

Cyclic carbenes [46] are also described by the addition of a isocyanide to a diamine gold(III) complex (Scheme 3.2). 

The presence of an excess of electron density on the carbon atom in methanide gold (III) complexes permits them to act as C-donor nucleophiles forming dinuclear or even polynuclear derivatives. 

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