Collect. Czech. Chem. Commun. 1981, 46, 3186-3197

Refinement of the structure and properties of the N-salicylideneglycinato-thioureacopper(II) complex

František Pavelčíka, Juraj Krätsmár-Šmogrovičb, Oľga Švajlenováb and Jaroslav Majera

a Department of Analytical Chemistry
b Department of Inorganic and Organic Chemistry, Pharmaceutical Faculty, Comenius University, 880 34 Bratislava


The stable N-salicylideneglycinato-thioureacopper(II) complex crystallizes in the monoclinic system with a space group of C2/c (No 15); a = 1.8599 (11), b = 1.4275 (5), c = 1.3617 (6) nm; β = 138.64 (4)°, Z = 8. (R = 0.060). The Cu(II) coordination in this complex is approximately square-pyramidal. The pyramid base is formed by the O(1), N(1) and O(3) donor atoms of the Schiff base (salalgly) and the S-atom of the thiourea (tu); Cu ##e S = 0.2273 (3) nm. The apex of the pyramid is formed by the O(3iv) atom, provided by two complex molecules, thus joined to form a dimer [Cu(salalgly)(tu)]2. The cryomagnetic properties of the complex in the interval 90-330 K obey the Curie-Weiss law. Its magnetic moment is practically temperature independent: μef = 1.82 ± 0.01 B.M. The polycrystalline sample of complex (X band, room temperature) exhibits the axial type of EPR spectrum with g ##k = 2.210, g ##l = 2.044, g = 2.099 (the Curie constant yields g = 2.101).