X-ray Structural Analyses of Two Allotropes of Cycloheptasulfur ( γ and δ-S7 ) [1]
1980 ◽
Vol 35
(11)
◽
pp. 1378-1383
◽
Abstract X-ray structural analyses of two monoclinic allotropes of cycloheptasulfur carried out at -110 °C revealed almost identical chair-like molecular structures of approximate Cs symmetry with bond distances between 199.5 and 218.2 pm, bond angles between 101.5 and 107.5°, and torsional angles between 0 and 109°.