Indium complexes sulfates

Quinoline-5-sulfonic acid, 8-hydroxy-7-iodo-metal complexes absorptiometry, 1,549 Quinolinium salts in gravimetry, 1, 535 Quinolinol metal complexes color photography, 6,107 8-Quinolinol biological activity, 6, 771 gallium and indium complexes radiopharmacology, 6, 971 radionuclide complexes radiopharmacology, 6,994 8-Quinolyl sulfate hydrolysis metal catalysis, 6,465 Quinones... 

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... 

Citrate buffer and saline (MCB) solutions were preelectrolyzed for 24 h at — 1100 mV versus SCE to remove metal ion impurities. Acetonitrile (MCB) was redistilled and stored over molecular sieves. DTPA (Aldrich), triethylamine (Aldrich), and isobutylchloroformate (Sigma) were of the highest available purity. HSA (essentially globulin free) and rabbit IgG specific for HSA (Sigma) were obtained in the lyophilized form. Indium was obtained as anhydrous, ultrapure InCls (Alfa Products). All solutions were prepared from distilled/deionized HgO of at least 10 ft resistivity. Protein A from Staphylococcus aureus (SPA, Enzyme Center) was employed as an immunoadsorbent. It was obtained as a 10% (w/v) suspension with a 1.47 mg/ml binding capacity for immune complexes. 2-mercaptoethanol, sodium dodecyl sulfate, and acrylamide reagents were all of electrophoretic grade (Bio-Rad). 

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. 

---