Mm. Ishankhodzhaeva et al., Crystal and molecular structure of 2-amino-5-ethyl-1,3,4-thiadiazole and its zinc(II) nitrate complex, RUSS J G CH, 70(7), 2000, pp. 1113-1119
The synthesis and X-ray diffraction analysis of the ligand 2-amino-5-ethyl-
1,3,4-thiadiazole (AET) and its zinc(II) nitrate complex are reported. It i
s found that the exocyclic amino group of the ligand is coplanar to the het
eroring plane, and the ethyl substituent strongly deviates from this plane.
The complex [Zn(AET)(3)(H2O)](NO3)(2) is a distorted tetrahedron with thre
e nitrogen atoms of the three ligand molecules and the oxygen atom of the w
ater molecule in the apices; the nitrate ions are in the outer sphere of th
e complex. The ligand coordinates with the central atom is a monodentate ma
nner through the endocyclic nitrogen atom located a to the amino group.