Synthesis and crystal and molecular structure of the [Co(HL)Cl2] complex (H2L is an optically active terpene bis-pinane propylenediaminodioxime)

Author： Larionov S.   Savelieva Z.   Glinskaya L.   Klevtsova R.   Bizyaev S.   Tkachev A.  

Publisher： Springer Publishing Company

ISSN： 0022-4766

Source： Journal of Structural Chemistry, Vol.46, Iss.3, 2005-05, pp. : 546-550

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Abstract

Interaction of Co(II) chloride with optically active bis-pinane propylenediaminodioxime (H2L) gave a diamagnetic compound of Co(III) with a composition [Co(HL)Cl2]. The crystal and molecular structure of the compound was determined by X-ray diffraction (XRD) analysis (Enraf-Nonius CAD-4 diffractometer, λMoK α, 703 F hkl , R = 0.0347). The crystals are orthorhombic with unit cell parameters a = 8.989(1) Å, b = 12.351(2) Å, c = 22.425(3) Å, V = 2487.7(6) Å3, Z = 4, ρcalc = 1.420 g/cm3, space group P212121. The crystal structure of the complex is composed of discrete one-center molecules. In the complex, the Co3+ ion coordinates four N atoms of the tetradentate cycle-forming ligand (HL− anion) and two Cl atoms. The coordination polyhedron of Co is a distorted octahedron Cl2N4.

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