Complexation coloration

Thiazole complex Color Pyridine complex Color... 

Formally, to each site H is assigned a A -dimensional complex color vector space spanned by the color eigenvectors >, >, so that a... 

Bismuth ligands, 2,989-1061 bonding, 2,1030-1041 7i bonding, 2, 1033-1039 trigonal bipyramidal complexes, 2,1036 Bismuth line, 3,294 Bismuthotungstates, 3, 1042 Bismuth pentafluoride, 3, 292 Bismuth tribromide, 3, 291 Bismuth trichloride, 3, 290 Bismuth trifiuoride, 3, 290 Bismuth triiodide, 3,292 Bismuth trioxide, 3,284 2,2 -Bisphenol metal complexes color photography, 6,109 Bis(trimethylene)triamine metal complexes, 2, 49 4,4 -Bi-l, 2,4-triazolyl metal complexes, 2, 89 polymers... 

Naphthol, l-(2-pyridylazo)-hexaamminecobalt(III) complex electron recording system, 6, 127 metallochromic indicators, 1, 546, 556 Naphthols metal complexes color photography, 6, 107... 

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... 

The use of the mordanting process with the natural red dye alizarin to form the metal complex dye Turkey Red (so-called because the color was like that found on a turkey s neck), was one of the first examples of the preparation and use of a metal complex colorant. 

Photochemical activation of [ESE, TNM] complexes. Colored solutions of the ESE derived from the relatively unreactive cycloalkanones and acyclic ketones in Table 2 and TNM persist for prolonged periods, and they can thus be separately subjected to filtered actinic radiation with /exc > 420 nm. (Note that under these conditions, neither TNM nor ESE alone is excited since they absorb only below 400 nm.) The photonitrations of ESE with TNM are carried out at low temperatures (—40°C) at which the thermal reactions are too slow to... 

Complex Color Centers Laser and Photonic Action... 

Introduction 231 Fundamental concepts 233 Electronic structure of transition-metal ions 235 Structural characteristics necessary for complex formation 240 Preparation of metal-complex colorants 248 Isomerism in metal-complex dyes 260 Stability of metal-complex dyes 261 Chromium-related problems in the mordant dyeing of wool 268 References 277... 

Chemical/Physical. Decomposes at 320 °C (Windholz et al., 1983) emitting toxic fumes of bromides and nitrogen oxides (Lewis, 1990). Diquat absorbs water forming well-defined, pale yellow crystalline hydrate but in aqueous alkaline solutions, diquat decomposes forming complex colored products including small amounts of dipyridone (Calderbank and Slade, 1976). 

It was reported (1+7) that salicylamide and other aromatic hydroxy carboxylic acid amides undergo autooxidation, when chromatographed in alkaline media. This autooxidation products hinder the development of the complex coloration with ferric ion. However, paper chromatographic separation of salicylamide and analogs in alkaline buffer media can be accomplished by ionophoresis (1+8). 

The oxidants were mCPBA and 4-phcnylpyridinc-A-oxidc (PPNO). However, the catalyst was partially decomposed under reaction conditions, as was evidenced by the loss of the dark brown complex color. 

Complex Color Solvent Xmax(nm) e(Lmol em ) Reference... 

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