The first examples of supramolecular discotic C3h tris(N-salicylideneamine)s...

 

 

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The first examples of supramolecular discotic C3h tris(N-salicylideneamine)s featuring inter- and intra-molecular H-bonding: Synthesis and characterization

przez ScienceDirect Publication: Tetrahedron Letters dnia 10-07-02

Publication year: 2010
Source: Tetrahedron Letters, In Press, Accepted Manuscript, Available online 1 July 2010
C.V., Yelamaggad , Rashmi, Prabhu , D.S. Shankar, Rao , S. Krishna, Prasad
Supramolecular liquid crystalline tris(N-salicylideneamine)s (TSANs) featuring both inter- and intra-molecular hydrogen bonding have been synthesized and characterized for the first time. These TSANs formed by condensing three equivalents of 3,4,5-trialkoxybenzoylhydrazine with 1,3,5-triformylphloroglucinol exist as the single C3h-symmetric keto-enamine product solely, unlike the previously reported TSANs. Their self-assembly into supramolecular fluid hexagonal columnar phase over a wide thermal range is evidenced with the aid of optical microscopic, calorimetric and powder X-ray diffraction techniques.

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