Reference

Reactions which relate to environmental mobility of arsenic and antimony

Reactions which relate to environmental mobility of arsenic and antimony. II. Oxidation of trimethylarsine and trimethylstibine. Parris, George E.; Brinckman, F. E. (Inorg. Chem. Sect., Natl. Bur. Stand., Washington, D. C., USA). Environ. Sci. Technol., 10(12), 1128-34 (English) 1976. CODEN: ESTHAG. DOCUMENT TYPE: Journal CA Section: 59 (Air Pollution and Industrial Hygiene) Oxidn. of trimethylarsine [593-88-4] and trimethystibine [594-10-5] by atm. O and other reagents is examd., and semiquant. rate consts. are calcd. In MeOH soln. the rate const. for reaction of dissolved O with Me3Sb is >10-2 M-1 s-1, whereas for the oxidn. of Me3As, the rate consts. are estd. as 103 and 10-6 M-1 s-1 for reaction of Me3Sb and Me3As, resp., with O. A scheme based on PMR evidence for reactive intermediates is suggested to account for the products of oxidn., Me3EO and Me2EO2H of these compds., E = Sb, As. From these results, even if biol. methylation of Sb occurs in nature analogous to that of As, the rapidity with which Me3Sb is oxidized would probably prevent hazardous concns. from building up in aerated surroundings.

Reactions of some methyl derivatives of antimony(III, V) with aliphatic alcohols in the presence of copper(II)

Reactions of some methyl derivatives of antimony(III, V) with aliphatic alcohols in the presence of copper(II). Usyatinskii, R.Several substances are used for example 1634-04-4 and 594-10-5 which are their cas registry numbers. I.; Gushchin, A. V.; Dodonov, V. A. (Nizhegorodskii Gosudarstvennyi Universitet, Nizhniy Novgorod, Russia). Zhurnal Obshchei Khimii, 66(7), 1137-1140 (Russian) 1996 Nauka. CODEN: ZOKHA4. ISSN: 0044-460X. DOCUMENT TYPE: Journal CA Section: 29 (Organometallic and Organometalloidal Compounds) Section cross-reference(s): 23 Me3Sb and Cu(OAc)2 [or Cu[O2C(CH2)7Me]2] at a 1:2 molar ratio substitute H of the OH group of aliph. alcs. to yield the corresponding Me alkyl ethers in up to 46% yields. The ease of the methylation depends on the nature of org. radical in an alc. mol. Me3Sb(OAc)2 and Me3Sb(OBz)2 react with alcs. in the presence of catalytic amts. of Cu to form the resp. Me alkyl ethers. .