444673-02-3Relevant academic research and scientific papers
Complexation of 3-(2-pyridyl)substituted N-methyl isoxazolidine with Pd(II), Zn(II) and Cu(II): Stereochemistry of co-ordination compounds in solution and solid-state
Lysenko, Andrey B.,Domasevitch, Konstantin V.,Peralta-Pérez, Emma,López-Ortiz, Fernando,Steed, Jonathan W.,Lampeka, Rostislav D.
, p. 769 - 777 (2002)
2-Methyl-3-(2-pyridyl)isoxazolidine (L) and its Pd(II), Zn(II) and Cu(II) complexes have been prepared and characterized by IR, 1H, 13C 1D and HMBC, NOESY 2D NMR spectroscopies. The stereochemistry of the 'free' and co-ordinated ligand has been assigned by nuclear Overhauser effect (NOE). The molecular structures of [Zn(cis-L)Cl2]·0.5CHCl3 (2a), [Zn(cis-/trans-L)Cl2] (2a-b) and [Cu(cis-/trans-L)Cl2]2 (4a-b) have been established by means of X-ray crystallography. The crystal structure of 2a consists of a racemic mixture of cis-L (3SR,5RS), while the crystal structure of 2b comprises a racemate of cis- and trans-isomeric forms. For both complexes the zinc atoms adopt nearly tetrahedral co-ordination with two chlorine atoms and N,N-bidentate co-ordinated L. The crystal structure of 4a-b consists of dinuclear [Cu(cis-/trans-L)Cl2]2 moieties with N,N-bidentate co-ordinated ligands. The square pyramidal co-ordination spheres of copper ions are completed by a bridging chloride ligand at the apex (Cu-Cl 2.79, 2.82 A?).
