Synthesis and structural characterization of cadmium(II) complexes with 2-(2-pyridyl)imino-N-(2-thiazolin-2-yl)thiazolidine (PyTT)
摘要:
We have carried out the synthesis of the cadmium coordination compounds [Cd(NO3)(2)(PyTT)(H2O)] (1) and [CdCl2 {(mu-Cl)(2)CdCl( mu-Cl)(2)(mu-PyTT)Cd}(2)](n) (2), together with their structural determination by means of X-ray diffraction. The compounds were also characterized through elemental analysis and infrared spectroscopy. The first complex presents a distorted pentagonal bipyramidal geometry with the axial positions occupied by one oxygen atom from a water molecule and a second one from a nitrate ion which acts as a monodentate ligand, whereas the equatorial plane contains three nitrogen atoms from the organic moiety and two oxygen atoms coming from the other nitrate group, which is bidentate. The structure of the second complex consists of parallel sheets linked by van der Waals forces, each one made up of structural units [CdCl2{(mu-Cl)(2)CdCl(mu-Cl)(mu-PyTT)Cd}(2)], which possesses two PyTT ligands, 10 bridging chloro ligands and 5 cadmium(II) centres belonging to three environment types: octahedral CdN2Cl4, octahedral CdCl6, on which a centre of symmetry is located, and tetrahedral CdNCl3. present in a 2:1:2 ratio. (C) 2003 Published by Elsevier B.V.
Synthesis, crystal structure, spectroscopic and magnetic properties of copper(II) complexes with 2-(2-pyridyl)imino-N-(2-thiazolin-2-yl)thiazolidine (PyTT)
The copper(II) complexes [Cu(PyTT)2(H2O)](NO3)2 (A) and [CuCl2(μ-PyTT)2CuCl(H2O)]Cl · 3H2O (B) were synthesized and characterized by single crystal X-ray diffraction, IR spectroscopy, UV–Vis–NIR diffuse reflectance and magnetic susceptibility measurements. In the mononuclear compound A the copper ion is in a distorted square pyramidal geometry, with the equatorial plane formed by two thiazoline nitrogen
Coordination chemistry of thiazoline/thiazolidine derivatives. I: Crystal structure of 2-(2-pyridyl)imino-N-(2-thiazolin-2-yl)thiazolidine (PyTT) and study of its interaction with nickel(II)
Abstract The crystalstructure of 2-(2-pyridyl)imino-N-(2-thiazolin-2-yl)thiazolidine (PyTT) is reported. The compound diaquabis[2-(2-pyridyl)imino-N-(2-thiazolin-2-yl)thiazolidine]nickel(II) chloride trihydrate has been isolated and characterized by IR, UV–Vis–NIR diffuse reflectance and X-ray diffraction. The complex cation has crystallographic C2 symmetry. The environment around the nickel atom
Outcalt, Russell J., Journal of Heterocyclic Chemistry, 1987, vol. 24, p. 1425 - 1428
作者:Outcalt, Russell J.
DOI:——
日期:——
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]
The compounds dichloro[2-(2-pyridyl)imino-kappaN-N-(2-thiazolin-kappaN-2-yl)thiazolidine]cobalt(II) and dichloro[2-(2-pyridyl)imino-kappaN-N-(2-thiazolin-kappaN-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) Angstrom: Co-Cl(2) = 2,2210) Angstrom]. [Zn-Cl(1) = 2.235(1) Angstrom: Zn-Cl(2) = 2.211(1) Angstrom]. one thiazoline nitrogen [Co-N(1) = 1.982(2) Angstrom], [Zn-N(1) = 2.021(2) Angstrom] and one imino nitrogen [Co-N(3) = 2.009(1) Angstrom], [Zn-N(3) = 2.056(2) Angstrom]. (C) 2001 Elsevier Science Ltd. All rights reserved.