Antimony iii Compounds

A similar reaction occurs with antimony(III) compounds. The determination of antimony(III) in the presence of tartrate is not very satisfactory with an immiscible solvent to assist in indicating the end point amaranth, however, gives excellent results. 

Dichlorine oxide Oxidisable materials Iodine pentafluoride Metals Iodine Metals Nitrosyl fluoride Metals Perchloric acid Antimony(III) compounds Potassium dioxide Metals Potassium permanganate Antimony, etc. 

Although antimony-antimony compounds tend to form as polymers rather than as cyclic structures, several cyc/o-antimony(III) compounds have recently been characterized. Eller-mann and Veit114 have synthesized the Sb3R4 analogues of the well known three-membered arsenic ring compounds (equation 41). 

ANTIMONY-GROUP 6 LIGANDS 28.11.1 Antimony(III) Compounds with Oxoacids... 

Bacteria, antimicrobials against, 12, 456 Baeyer-Villiger oxidation, via tin amides, 9, 370 Barbier-Grignard-type reactions, and sonochemical metal insertions, 1, 315 Barbier-type reactions allenyl and propargyl tins, 9, 358 with allylic tins, 9, 357 with antimony(III) compounds, 9, 426 with bismuth(III) compounds, 9, 433 with cerium reagents, 10, 409 with indium compounds, 9, 685... 

Carbon functional groups, attachment to polysilanes, 3, 585 Carbon-heteroatom bond formation via antimony(III) compounds, 9, 428 via antimony(V) compounds, 9, 432 via bismuth(III) compounds characteristics, 9, 440 with copper catalysts, 9, 442 non-catalyzed reactions, 9, 443 with bismuth(V) compounds, 9, 450 with bismuthonium salts, 9, 449 with bismuth ylides, 9, 450 Carbon-heteroatom ligands in tetraosmium clusters, 6, 967 in tetraruthenium clusters, 6, 960... 

Phenyl-2-arylethanols, via antimony(III) compounds, 9,428 Phenylations, via Cu-catalyzed bismuth(III) reactions, 9, 443... 

Antimony(III) compounds are easily dissolved in acids, when the ion Sb3+ is stable. If the solution is made alkaline, or the concentration of hydrogen ions is decreased by dilution, hydrolysis occurs when antimonyl, SbO+, ions are formed ... 

Rhodamine-B reagent see antimony(III) compounds (Section III.15, reaction 7). There is no need for preliminary oxidation in this case. 

Werner s studies led to a general realization that the typical properties of metal ions could be modified by binding them firmly to appropriate chelating agents, and it was a short step to extend these ideas to the biological properties of toxic metal ions. An early application of this in medicine was the use of the J-tartrate complex of antimony(III) in the treatment of parasitic diseases such as schistosomiasis 2. The parasite which causes this disease is readily poisoned by antimony(III) compounds, but for simple antimony compounds the margin of safety is too small and humans suffer from cardiotoxicity when such compounds are administered. The J-tartrate complex allows this to be somewhat more readily controlled and allows the more... 

Antimony(III) compounds are oxidized to Sb also by Ag20 in the presence of OH". An Sb compound when evaporated on a water bath with Ag(NH3>2 gives a black precipitate of Ag and Sb. A solution of Sb(OH)4 when treated with Ag gives a heavy black precipitate of Ag, insoluble in NH3, and thus separated from any Ag20 precipitated. If, instead of Ag, a solution of [Ag(NH3)2] containing a large excess of 1-M NH3 is added, no precipitation occurs in the cold (distinction from [Sn(OH)3]"), nor upon heating until the excess NH3 has been driven off. 

Since antimony(III) compounds only dissolve in acid solution, the reaction of iodine produces HI. To remove this excess, sodium bicarbonate is added. To prevent the precipitation of Sb(III) in this case, tartrate is added. This forms a soluble compound K(SbO)C4H406. 

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