Nomenclature
CAS number: 535-46-6
Dihydroxyphenylstibine oxide; phenylstibonic acid; phenylstibinic acid.
C
6H
7O
3Sb; mol wt 248.88.
C 28.96%, H 2.83%, O 19.29%, Sb 48.92%.
C
6H
5SbO(OH)
2.
Description and references
Arylstibonic acids likely exist in the solid
state as polymers of high mol wt, associated by H-bonds. The ions
exist probably in the form [ArSb(OH)5]. Benzenestibonic
acid is prepd from benzenediazonium chloride and antimony trioxide
in the presence of alkali: Schmidt, Ann. 421, 176, 188
(1920); DE 254421; Chem. Zentralbl. 1913 I,, 345; Frdl. 11, 1084. From the double compd
of benzenediazonium chloride and antimony trichloride by the action
of alkali: May, J. Chem. Soc. 101, 1033 (1912); US 1260707. Structural studies: G. O. Doax, J. Am. Chem. Soc. 68, 1991 (1946); L. H. Bowen, G. G. Long, Inorg. Chem. 17, 551 (1978).
Properties
Minute crystals from acetic acid, larger diamond-shaped,
glistening crystals from alcohol-chloroform mixture on the addition
of water. Not melted at 250°, dec at higher temps. Insol in water;
slightly sol in alc; more sol in acetone, in alcohol + benzene, alcohol
+ ether, alcohol + chloroform; sol in warm chloroform or amyl acetate;
freely sol in aq soln of sodium hydroxide, sodium carbonate, and ammonia.