19348-03-9Relevant academic research and scientific papers
Synthesis and Spectroscopic Study of Pd(II) Coordination Compounds with New Pyridine-substituted N-Methylisoxazolidines
Lampeka
, p. 1789 - 1792 (2007/10/03)
New pyridine-substituted isoxazolidine derivatives, 2-(2-melhyl-3-ferrocenylisoxazolidin-5-yl)-pyridine (LFc) and 2-(2-methyl-3-phenylisoxazolidin-5-yl)pyridine (LPh) were synthesized. Palladium(II) complexes were obtained by their reaction with Na2[PdCl4] and [Pd(PEt3)Cl2]2 in nonaqueous media. The complexes Na[Pd(LPh)Cl3] and cis-[Pd(LPh)2Cl2] are formed with Na2[PdCl4] at the initial molar ratios Pd2+ : LPh 1 : 1 and 1 : 2, respectively, with monodentate coordination of the ligand. In the case of LFc only the [Pd(LFc)Cl2] complex is formed with the bidentate coordination of the ligand. The reaction between [Pd(PEt3)Cl2]2 and LFc yields trans-[Pd(LFc)(PEt3)Cl2]. All the complexes have a square-planar configuration.
Synthesis and structure of a palladium(II) chloride complex with 2-(2-methyl-3-phenyl-isoxazolidin-5-yl)-pyridine
Lysenko, Andrey B.,Shishkin, Oleg V.,Lampeka, Rostislav D.
, p. 373 - 376 (2007/10/03)
The 1:1 complex of palladium(II) chloride with 2-(2-methyl-3-phenyl-isoxazolidin-5-yl)-pyridine (L) has been prepared and studied by means of elemental analysis, 1H NMR spectroscopy and X-ray diffraction (monoclinic, space group P21/n with parameters: a = 8.141(2), b = 9.750(2), c = 20.691(6) A, β = 95.62(3)°, V = 1634.4(7) A3, Z = 4; R1 = 0.054 and wR2= 0.144 for 3352 unique reflections). A square-planar coordination polyhedron has been established for the palladium atom both in acetone solution and in the solid state. The organic ligand is coordinated to metal in a bidentate manner via nitrogen atoms of the pyridine substituent (Pd-N(2) 2.125(3) A) and the isoxazolidine heterocycle (Pd-N(1) 2.102(3) A). The other two coordination positions of palladium are occupied by chlorine atoms (Pd-Cl(1) 2.321(1) and Pd-Cl(2) 2.333(1) A). The six-membered chelate ring formed by Pd, N(2), C(4), C(1), O(1) and N(1) possesses a twist-tub conformation. The isoxazolidine cycle has an envelope conformation with an equatorial orientation of the methyl group.
