Indium complexes nitrates

Fig. 28. RDFs for an acid and a hydrolyzed indium(III) nitrate solution and the corresponding difference curve, which shows the sharp In-In interaction at 3.9 A in the polynuclear hydrolysis complexes. Theoretical peaks, calculated for the models to the right, are shown by dashed lines.

Diels-Alder reactions are one of the most famous examples which are accderated by a Lewis acid. Various water-stable Lewis adds such as Ln(OTf)3,1371 methylrhenium trioxide,1381 copper nitrate,1391 copper bis(dodecyl sulfate) (4b),1401 indium chloride,1411 and bismuth triflate1421 have been used for Diels-Alder and aza-Diels-Alder reactions in water. Furthermore, a catalytic asymmetric Dids-Alder reaction in water using a copper complex of an amino... 

Indium nitrate can be prepared from InCl3 and N205 158,159 the dissolution of indium metal in cone, nitric acid yields In(N03) xH20 (x = 3, 4, 5),7 which has been used as the source of cationic and anionic complexes.64 Salts of [In(N03)4] have been reported,64160 and Raman studies161,162 have demonstrated the presence of In/NOj complexes in solution the stability constant results have been reviewed.9... 

Cationic indium(III) complexes could not be prepared with pyridine, but species such as [In(bipy)3] " and [In(phen)3] are known as the perchlorate or nitrate salts, and [In(terpy)2](C104)3 has also been reported. Stability constants have been measured in the In /bipy and In " /phen systems and for some substituted pyridines. The adducts of indium(III) halides and pseudohalides with pyridine and substituted pyridines have been... 

Reagents. Aqueous solutions of silver(I) and divalent transition metal perchlorate were used for investigating the structures of the hydrated metal ions(l-4). Copper sulfate(l,2), zinc sulfate(l) and silver(I) nitrate(3) were also used in the structural studies of the aqua metal complexes. A small amount of acid was added to the solutions to prevent hydrolysis of the metal ions. Indium(III) perchlorate was used for the study of the structural determination of the aqua indium(III) complex(5), but no further investigation has been carried out for other complexes except the hexachloroindate complex(6), for which we will not describe here. 

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