The coordination chemistry of thiazoline/thiazolidine derivatives. II: synthesis and characterization of [CoCl2(PyTT)] and [ZnCl2(PyTT)] [PyTT=2-(2-pyridyl)imino-N-(2-thiazolin-2-yl)thiazolidine]

Abstract The compounds dichloro[2-(2-pyridyl)imino-κ N  N -(2-thiazolin-κ N -2-yl)thiazolidine]cobalt(II) and dichloro[2-(2-pyridyl)imino-κ N  N -(2-thiazolin-κ N -2-yl)thiazolidine]zinc(II) have been isolated and characterized by single crystal X-ray diffraction and IR spectroscopy. Moreover, the cobalt(II) complex has been studied by means of magnetic susceptibility measurements and UV–Vis–NIR diffuse reflectance. Both complexes are isostructural. The environment around the cobalt(II) and zinc(II) atoms may be described as a distorted tetrahedral geometry with the metallic atoms coordinated to two chlorine atoms [CoCl(1)=2.241(1) A; CoCl(2)=2.221(1) A], [ZnCl(1)=2.235(1) A; ZnCl(2)=2.211(1) A], one thiazoline nitrogen [CoN(1)=1.982(2) A], [ZnN(1)=2.021(2) A] and one imino nitrogen [CoN(3)=2.009(1) A], [ZnN(3)=2.056(2) A].