Metal phenyls antimony

Sterically hindered tris[(hydroxyphenylthio)phenyl]phosphites, e.g., P[OPh( butyl)(methyl)SPh( butyl)(methyl)OH]3 (Hostanox OSP-1 Clariant), said to be especially useful in antimony oxide catalysed polyesters as they prevent formation of antimony metal and its associated grey discoloration [44] ... 

Azo compounds derived from triazole are coloured ligands for antimony, bismuth and copper (81HC(37)1, p. 609). Brilliant lakes are formed with hydroxyphenylazotriazoles (73AJC1585) the intensity of the colour formed with various metallic ions varies with the position of the hydroxy group in the phenyl substituent. 

The body shows decomposition if heated above 270° C. and burns in air with a reddish flame and the separation of lead oxide. It is moderately soluble in chloroform, benzene, or carbon bisulphide when hot, and difficultly soluble in alcohol, ether, ligroin, or acetic acid. If heated in a sealed tube with hydrochloric acid decomposition occurs, lead tetrachloride and benzene being produced. By the action of halogens or concentrated nitric acid two phenyl groups are split off, and a lead diphenyl dihalide or dinitrate formed. A similar action takes place with iodic acid, formic, acetic, trichloracetic, propionic, valeric, and p-nitrobenzoic acids. With metallic chlorides the following derivatives are formed arsenic trichloride — lead diphenyl dichloride and diphenyl arsenious chloride antimony trichloride — lead diphenyl dichloride and diphenylstibine chloride antimony penta-chloride — lead diphenyl dichloride and diphenylstibine trichloride bismuth tribromide —> lead diphenyl dichloride and diphenylchloro-bismuthine thallie chloride —> lead diphenyl dichloride and thallium diphenyl chloride tellurium tetrachloride —> lead diphenyl dichloride and tellurium diphenyl dichloride. 

The variety of substances used as additives in polymers is considerable. For example, the fillers may include china clay, various forms of calcium carbonate, talc, silicas (diatomaceous silica), silicates, carbon black, etc. The impact modifiers typically include other polymers. Plasticizers include certain polymers with low (oligomers), dialkyl phthalates, dialkyl sebacates, chlorinated paraffin waxes, liquid paraffinic fractions, oil extracts, etc. Heat stabilizers include heavy metals salts such as basic lead carbonate, basic lead sulfate, dibasic lead phosphite (also acting as a light stabilizer), dibasic lead phthalate, stearates, ricinoleates, palmitates and octanoates of cadmium and barium, epoxide resins and oils, amines, diphenylurea, 2-phenylindole, aminocrotonates. The antioxidants include tris-nonyl phenyl phosphite, 2,6-di-ferf-butyl-p-cresol (BHT), octadecyl-3,5-di-terf-butyl-4-hydroxyhydrocinnamate, etc. The UV stabilizers include modified benzophenones and benzotriazoles. Processing lubricants include calcium stearate, stearic acid, lead stearate, various wax derivatives, glyceryl esters and long-chain acids. Fire retardants include antimony oxide, some pyrophosphates, etc. 

The organic moiety most suitable to establish a stable sigma carbon-metal bond in difficult cases seems to be an electronegative radical such as the phenyl or acetylenic group. Examples of new and interesting phenyl organometallic compounds are triphenylchromium (64), pentaphenyl-antimony, tetraphenyltellurium, and triphenyliodine (134)- Nickel and other metals can be transformed into acetylides (89). 

These are cis-[Mn(CO) L SCN], cis-[Mn(CO) L2 SCN] and trans-[Mn(CO) L2 NCS]. The compounds cis-[Mn(CO) L SCN] and cis-[Mn(CO) L2SCN] contain sulfur-bonded thiocyanate. The fact that the latter has not been isolated with P(C Hg) may be due to the small size of phosphorus, relative to arsenic and antimony, " which considerably crowds the phenyls around the metal. This explanation is supported by molecular models (Stewart) of the compounds. The different modes of Mn-CNS attachment in the cis- and trans-disubstituted complexes may be due to a greater steric hindrance in the former. Molecular models... 

All three Group VB metals, like phosphorus, form crystalline penta-phenyl derivatives PhjM. An X-ray diffraction study of the antimony compound has shown a square pyramidal arrangement of phenyl groups... 

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