Arsaalkyne
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In chemistry, a arsaalkyne (IUPAC name: alkylidynearsane) is an organoarsenic compound containing a triple bond between arsenic and carbon with the general chemical formula R−C≡As. Arsaalkynes are rare, especially in comparison with the phosphaalkynes. The parent H−C≡As has been characterized spectroscopically, otherwise the only arsaalkynes have bulky organic substituents.[1]