Metal complexes of chiral pyridine ligands. X-ray structure of nitratobispyridine>copper(II) nitrate

Article abstract of DOI:10.1007/BF01668226

Cobalt(II), nickel(II), and copper(II) complexes of 2-<(2S)-2-pyrrolidinyl>pyridine (L) have been synthesized and characterized.The crystal structure of the complex NO3 has been determined by X-ray diffraction.Crystals are monoclinic, space group P2+, with a = 10.766(3), b = 7.525(2), c = 13.447(4) Angstroem, β = 104.64(2) deg, and Z = 2.The structure consists of ⁺ cations and NO3^- anions.The copper atom has a distorted trigonal bipyramidal coordination geometry with the two pyrrolidine nitrogens and one nitrate oxygen occupying the equatorial positions and the two pyridine nitrogens at the apices.The crystalline cohesion is ensured by a network of hydrogen bonds involving the pyrrolidine groups as donors and both coordinate and uncoordinate nitrates as acceptors.KEY WORDS: Metal complexes, chiral, pyridine, ligands, pyridine derivatives.