New Principles in Metallomesogen Structure-magnetism Correlations
Whereas binuclear salicylaldimine complexes and their mononuclear parents are waxlike solids with long chain N-substituents, they are liquid crystalline (mesogenic) when such substituent chains are placed on both the ligand rings and the N-atoms. The structure of the non-mesogenic binuclears is determined via X-ray crystallography, and via the strength of magnetic coupling for the mesogenic ones. In the non-mesogenic binuclears the central metal environments have a marked distortion towards tetrahedral (>36°; scale 0° for planar, 90° for tetrahedral), while in the mesogenic ones, the stronger magnetic coupling indicates that this is closer to planar (25°).
S. Liebsch et al., "New Principles in Metallomesogen Structure-magnetism Correlations," Inorganic Chemistry Communications, Elsevier, Jul 2002.
The definitive version is available at http://dx.doi.org/10.1016/S1387-7003(02)00464-1
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