N-Hв‹ЇS HYDROGEN BONDING MOTIFS IN CRYSTALLINE SOLIDS OF 1,2,4-TRIAZOLE-5-THIONES: APPLICATION OF THE CAMBRIDGE STRUCTURAL DATABASE.
R
2
2 (8) RING MOTIF
Irena Wawrzycka-Gorczyca
Maria Curie-Sklodowska University, Lublin, Poland
Keywords: N-Hв‹ЇS hydrogen bond, R
(8) ring motif, 1,2,4-triazole-5-thiones, dimer, Hirshfeld surface, fingerprint plot, CSD, Cambridge Structural Database
Abstract
A database study on the N-H⋯S hydrogen bonding ring motif ( R
2
2(8)) for 1,2,4-triazole-5-thiones is reported. The R
2
2(8) ring is one of the most general ring motifs observed in the crystallographic literature, however, up to now the ring synthon built by the N-H⋯S interaction has not been particularly described. Probably, in multi-heteroatom systems, other structure-determining stronger interactions may take precedence over weaker N-H⋯S interactions. On the other hand, in recent years, considerable importance has been given to structures determined through N-H⋯S interactions. It is also common in the crystals of 1,2,4-triazole-5-thione derivatives.
|
