Gold-indium compounds

Poisson s ratio [FRACTUREMECHANICS] (Vol 11) [GOLD AND GOLD COMPOUNDS] (Vol 12) [IRON] (Vol 14) ofgermamum [GERMANIUMAND GERMANIUMCOMPOUNDS] (Vol 12) of hafnium [HAFNIUM AND HAFNIUM COMPOUNDS] (Vol 12) of indium [INDIUM AND INDIUM COMPOUNDS] (Vol 14)... 

The mixed-valent gold indium cluster [Au3ln3Cl6(dppe)2] is composed of In(I) and In(II) atoms. Synthetic details were presented in an earlier section. Insertion and redox reactions of In(I) halides have been described. For example, oxidative addition reactions of InX (X = Cl, Br, I) with PhSSPh yields indium(III) thiolates of the type (PhS)2lnX." Unexpected In(II) or In(III) products are common in reactions involving indium(I) halides, which result from facile disproportionation processes. Several such cases were described with divalent indium compounds. 

TARNISH. A reaction that occurs readily at room temperature between metallic silver and sulfur in any form. The well-known black film that appears on the silverware results from reaction between atmospheric sulfur dioxide and metallic silver, forming silver sulfide. It is easily removable with a cleaning compound and is not a true form of corrosion. Plating with a mixture of silver and indium will increase tarnish resistance. Gold will also tarnish in the presence of a high concentration of sulfur in the environment... 

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