Synthesis and X-ray crystal structure of (p-CH3C6H4)3As=N-S3N3

Article abstract of DOI:10.1016/0022-328X(94)05295-M

A 1:2.5 mole ratio reaction of S4N4 with (p-tolyl)3As in a solvent mixture of CH3CN and C6H6 at ca. 50 deg C gives (p-CH3C6H4)3As=N-S3N3 in ca. 75percent yield after a two day reaction period.The compound, (p-CH3C6H4)3As=N-S3N3 crystallizes in the triclinic space group P_<*> with a = 9.216(2) Angstroem, b = 11.124(4) Angstroem, c = 12.398(4) Angstroem, α = 76.43(2) deg, β = 83.06(2) deg, γ = 67.09(2) deg, V = 1137.4(6) Angstroem³, Z = 2.The structure is refined to a final R value of 0.047 with R_w = 0.049.The As-N bond distance is 1.78 Angstroem while the average S-N ring distance is 1.62 Angstroem.Keywords: Arsenic; Tertiary arsines; Thiazenes; X-ray diffraction