Title

Transition Metal Chemistry of Quinuclidinone-Containing Ligands. V. Crystal Structure of Dichloro[trans-2-(2-quinolyl)methylenequinuclidin-3-one]cobalt(II)

Abstract

The crystal structure of the title compound has been determined from 2829 independent reflections measured by diffractometer. Crystals are triclinic, space group P1, with the (non-conventional) unit-cell parameters, a = 9.492(4), b = 9.754(5), c = 9.243(5) Å, α = 89.91(5)°, ß = 90.28(5)°, γ = 108.30(2)°, and Z = 2. The structure was solved by Patterson and Fourier techniques, and refined by full-matrix least-squares methods to R = 3.4%. The compound consists of cobalt(II) ions co-ordinated in a pseudotetrahedral manner to the two nitrogen donor atoms in the ligand and to the two chloride ions. The two Co-Cl distances are slightly different [2.219(1) and 2.227(1) Å], and the Co-N (quinoline) bond distance [2.014(2) Å] is somewhat shorter than Co-N (quinuclidinone) [2.064(2) Å]. The bond angles about Co are distorted from their pure tetrahedral value, the smallest being [100.35(9)°] the chelate 'bite' angle. The ligand is almost planar (excluding the two ethylene bridges), and the molecule therefore possesses an approximate mirror plane bisecting the Cl-Co-Cl angle.

Department(s)

Chemistry

International Standard Serial Number (ISSN)

1472-7773

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1975 Royal Society of Chemistry, All rights reserved.


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