The American Conference of Governmental Industrial Hygienists classifies antimony as a suspected human carcinogen. The toxicity of Sb is a function of the water solubility and the oxidation state of the Sb species under consideration. Antimony is absorbed slowly through the oral route, and many antimony compounds are gastrointestinal irritants. Occupational exposures usually occur through inhalation of dusts containing antimony compounds. Most information regarding antimony toxicity has been obtained from industrial exposures. The emission of antimony into the human environment is overwhelmingly the result of human activity approximately half of the antimony used in the United States is recovered from lead-based battery scrap. White metal usually contains tin, lead, or antimony as the chief component. Antimony is used in white metal, a group of alloys having relatively low melting points. In nature, it is found associated with sulfur as stibnite. Gad, in Encyclopedia of Toxicology (Third Edition), 2014 AbstractĪntimony (Sb CASRN ) is a semimetal element with chemical properties similar to lead, arsenic, and bismuth. Attempts to isolate complexes of SbF3 with soft donors (PMe3, SMe2 etc.S.C. The geometries present in these N-heterocycle adducts are compared with those in pnictogen oxide and crown ether complexes. In polymeric chains involving bridging fluorine and pyridine-N-oxide are present, again resulting in a very distorted seven-coordinate geometry at Sb. , also containing seven-coordinate antimony, is produced from SbF3 and 1,10-phenanthroline in MeOH, but has a six-coordinate antimony centre (pentagonal pyramidal) with no significant intermolecular contacts to neighbouring molecules. was obtained from iPrOH solution, but hydrolysis in solution readily forms. These are linked by longer fluorine contacts, each antimony achieving a distorted seven-coordinate geometry.
, the structure of which comprises co-crystallised neutral centrosymmetric dimers, with neutral four-coordinate units.The reaction of SbF3 with 2,2?-bipyridyl in anhydrous methanol produces Attempts to isolate complexes of SbF3 with soft donors (PMe3, SMe2 etc.) have been unsuccessful, as were attempts to form complexes with SbF3 functioning as a Lewis base towards metal carbonyls