Title

Crystal and Molecular Structure of Aquadibromo[2-(2-pyridyl)quinolinyl]manganese(II), and the Relation Between Structure and Magnetic Properties of Manganese(II) Complexes

Abstract

The crystal and molecular structure of the title complex has been determined by heavy-atom techniques. Crystal are monoclinic, a = 8.172(3), b = 11.868(4), c = 16.456(5)Å, β = 98.83(4) °, space group P21/c. The structure was refined by least squares to R 8% for 1 577 reflections measured by diffractometer. The complex consists of well-isolated units of five-co-ordinated MnII molecules, permitting no significant magnetic exchange interaction between neighbouring paramagnetic centres. Comparison with a related structure [Mn2(biq)2Cl4] (biq = 2.2′-biquinolyl) indicates that the presence of the co-ordinated water molecule (Mn-O 2.27 Å) prevents dimerisation of the complex via bromide bridges. The MnN2X2 (X = Br or Cl) chromophore in this type of complex seeks out an extra ligand to become distorted trigonal bipyramidal five-co-ordinate.

Department(s)

Chemistry

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1976 Royal Society of Chemistry, All rights reserved.


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