Labbe, Gérard
[UCL]
Albrecht, E.
Feneaudupont, J.
Declercq, Jean-Paul
[UCL]
6alambda4-Thia-1,2,3,4,6-pentaazapentalenes 3 are conveniently prepared by reacting 5-imino-DELTA3-1,2,4-thiadiazolines 2 with aromatic diazonium tetrafluoroborates in the presence of pyridine. The first crystal structure analysis of this class of compounds 3g is described and shows properties characteristic of a thiapentalene structure; i.e. long N-S-N bonds (1.85 and 1.975 angstrom) in a nearly linear arrangement (164-degrees) and comprising a heterobicycle which is strictly planar.
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Bibliographic reference |
Labbe, Gérard ; Albrecht, E. ; Feneaudupont, J. ; Declercq, Jean-Paul. Synthesis and Crystal-structure Analysis of a 6a-lambda-4-thia-1,2,3,4,6-pentaazapentalene. In: Journal of Heterocyclic Chemistry : international journal, Vol. 30, no. 2, p. 349-351 (1993) |
Permanent URL |
http://hdl.handle.net/2078.1/49733 |