Nomenclature
CAS number: 506-80-9
Carbon selenide.
CSe
2; mol wt 169.93.
C 7.07%, Se 92.93%.
Description and references
Prepd by the action of methylene chloride vapor
on heated selenium: Ives et al., J. Chem. Soc. 1947, 1080; or from a mixture
of CCl4 and H2Se in a stream of N2 at 500°: Grimm, Metzger, Ber. 69, 1356 (1936); from the elements by electrical discharge
on Se vapor in the presence of sugar charcoal: Steudel, Z. Anorg. Allg. Chem. 361, 195
(1968).
Properties
Light-sensitive, golden yellow, strongly refractive,
liquid. Odor of rotten radishes. Turns brown to black on storage.
d420 2.6824; d425 2.6626. mp -45.5°. bp 125-126°; bp8.0 10.0°. nD20 1.845. Heat of formation: 34 kcal/mol.
Miscible with carbon tetrachloride, carbon disulfide, toluene, other
organic solvents. Practically insol in water. Dec by alc, pyridine.