Crystal and molecular structure of thiocarbonohydrazide hemihydrochloride

Abstract

Crystals of the title compound are monoclinic, space group C2/c, Z= 8, unit cell dimensions: a= 18·397(12), b= 9·039(6), c= 13·847(11)Å, and β= 113·4(1)°. Intensities were measured by counter methods and the structure solved by direct methods and refined by least squares to R 0·028 for 2111 observed reflections. The basic units of the structure are dimers, H₂N·NH·CS·NH·NH₂… H₃·[graphic omitted]·NH·CS·NH·NH₂, and chloride anions. Both component monomers are in the cis,trans-conformation, i.e. with one group ·NH·NH₂ bent toward C–S and the other toward the opposite side. Distances and angles in both thiocarbonohydrazide molecules are as expected, except for some C–S bonds and the angles around the carbon atom. The groups N–CS–N are planar. Internal rotation angles of –NH₂ and –[graphic omitted]H₃ groups are discussed.