The Crystal and Molecular Structure of Two Thiathiophthen Nitrogen Isosteres
- 1 February 1972
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 50 (3) , 324-332
- https://doi.org/10.1139/v72-048
Abstract
Three dimensional crystal structure analyses have been carried out on two nitrogen isosteres (a) 5 and (b) 6 using diffractometer data. The crystal data are: (a) system: monoclinic, P21/c; a = 7.350(3), b = 12.309(5), c = 23.268(8) Å, β = 118.35(8)°; (b) system: monoclinic, P21/c; a = 9.34(1), b = 9.58(1), c = 25.65(3) Å, β = 108.08(8)°.The S … S distances are 2.396(12) and 2.814(8) Å, respectively. This difference is an indication of the cleavage of the S—S "bond" in 5 when the terminal sulfur atom is methylated. The nature of the bonding of the outer sulfur atom in 6 is discussed.Keywords
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