Abstract
The newly-synthesized bidentate and tridentate Pt(II)-complexes containing the ONNO core and differing by the length of aliphatic side chain, were studied in the context of their aggregation ability in chlorophorm using 1H, 195Pt and diffusion-ordered NMR spectroscopy. It was found that the elongation of the aliphatic chain causes increase in the value of aggregation constant, whereas the addition of the third benzene ring to the structure of bidentate Pt(II) complexes results in lowering of K. These observations were explained in terms of the interplay of various physico-chemical factors influencing the stability of the tridentate dimers in solution, which is important for further understanding of the aggregation behaviour of the Pt-ONNO complexes in liquid crystalline phase.
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