Antimony 3 complexes

Phosphorus, arsenic and antimony complexes of the main group elements. W. Levason and C. A. McAuliffe, Coord. Chem. Rev., 1976,19,173-185 (88). 

Electrodeposition of antimony sesquitelluride, Sb2Tc3, or of (Bii xSbx)2Te3 alloys from aqueous solutions is challenging because it is difficult to achieve a sufficiently high concentration of antimony. Complexing agents such as tartaric acid, citric acid, or FUTA have been used to solubilize Sb in water. 

The concentration of arsenic can be determined at 600 nm because the Sb-Ag DDTC complex does not absorb light of this wavelength. The molar absorptivity of the antimony complex with Ag DDTC reaches its maximum value at 504 nm, but there is also appreciable light absorbance from the As-Ag DDTC complex at this wavelength. The antimony concentration can be calculated from the total extinction value measured at 504 nm by subtracting the extinction value (at 504 nm) that corresponds to the previously determined arsenic concentration. It is clear that calibration curves of arsenic at 504 and 600 nm and of antimony at 504 nm are needed to perform the calculation. 

Phosphorus is present in zinc dialkyldithiophosphate and deactivate platinum catalysts in engine exhaust systems. Using zinc, antimony and oxothiomolybdate dialkyl-dithiocarbamate (MoDTC) complexes alone or in combination with other lubricating oil additives appears to solve this problem. Antimony complexes are used also as extreme pressure agents while molybdenum ones as friction modifier additives (Hill et al., 1994). Analyses of Zn(dtc)2 decomposition using the thermogravimetric method, flash vacuum pyrolysis, and four-ball machine... 

Interferences Metals or salts of metals such as chromium, cobalt, copper, mercury, molybdenum, nickel, palladium, and silver may interfere with the evolution of arsine. Antimony, which forms stibine, is the only metal likely to produce a positive interference in the color development with the silver diethyldithiocarbamate. Stibine forms a red color with silver diethyldithiocarbamate that has a maximum absorbance at 510 nm, but at 535 to 540 nm, the absorbance of the antimony complex is so diminished that the results of the determination would not be altered significantly. 

Further oxidation with hydrogen peroxide gives peroxo antimony complexes (R2Sb0)4(02)2 (12) with quadruply bridging peroxo groups (Scheme 4). ... 

Bismuth trichloride forms a 1 1 Menshutkin-like complex with mesitylene " and a 2 1 complex with hexamethylbenzene , in which the arene is bonded to bismuth at distances to the ring centre of ca 3.1 A. As with the related antimony complexes, there are also a number of intermolecular chlorine bridges, raising the bismuth coordination number and leading to either sheets or tetrameric bismuth chloride networks. These compounds differ from the antimony halide analogues where the arene is usually acentrically bonded. 

The fastness of basic dyes can be improved by after-treatment with tannic acid, in order to convert the dyestuff into its comparatively insoluble tannic acid salt. The wet-fastness is further improved by the action of an antimony salt which forms an even more insoluble dye-tannic acid-antimony complex. The most convenient antimony compound to use is tartar emetic , w hich is a popular name for potassium antimony tartrate, 2(K(Sb0).C4H40g).H20. The treatment is carried out in the following manner the dyed goods are worked in a bath containing 1 per cent of... 

Diazonium antimony complex salts from hydrazines... 

NOCgHj, Benzoyl isocyanide, chromium complex, 26 32,34,35 N0C,3H,3, Formanide, N-(l-(l-naphthal-enyl)ethyll-, rhenium complex, 29 217 NOPCjsHjj, Benzamide. 2-(diphenylphos-phino)-N-phenyl-, 27 324 NOPCjjHjj, Benzamide, Af-[2-(diphenyl-phosphino)phenyl]-, 27 323 NO2CH3, Methane, nitro-, antimony complex, 29 113 cobalt complex, 29 114 NOjCjHj, 4-Pyridinecarboxylic acid, rhodium complex, 27 292 NO2P2C3JH33, Phosphorus(l-t-), p-nitrido-bis(triphenyl-, acetate, 27 296 NO2SC3H7, L-Cysteine, molybdenum complex, 29 255,258... 

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