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1Author    M. Srinivasulu, P.V V Satyanarayana, P. A. Kumar3, V.G K M PisipatiaRequires cookie*
 Title    Induced Smectic-G Phase through Intermolecular Hydrogen Bonding Part VIII: Phase and Crystallization Behaviours of 2-(p-/i-heptyloxybenzyIidene imino)-5-chIoro-pyridine: p-n-alkoxybenzoic acid (HICP:n ABA) Complexes  
 Abstract    New intermolecular H-bonded liquid crystalline complexes, viz., 2-(p-n-heptyloxybenzylidene imi-no)-5-chloro-pyridine:p-/z-alkoxybenzoic acid; (HICP:nABA) (where n denotes the alkoxy carbon num­ bers 3 to 10 and 12) exhibiting smectic-F (n = 12) and smectic-G phases have been synthesized and char­ acterized by Thermal Microscopy and Differential Scanning Calorimetry (DSC). Detailed IR (solid and solution states) analysis confirms the existence of intermolecular H-bonding between the pyridyl nitro­ gen and the COOH group of the p-n-alkoxybenzoic acid moiety. The phase behaviour of the series is discussed in the light of reported data on free p-n-alkoxybenzoic acids. The crystallization kinetics of a representative complex, using the DSC technique, is discussed. The mechanism of the crystal growth of the new crystalline smectic-G phase is computed with the Avrami equation. 
  Reference    Z. Naturforsch. 56a, 685—691 (2001); received June 27 2001 
  Published    2001 
  Keywords    H-bonding, HICP:nABA, Crystallization Kinetics, Avrami Parameters 
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 TEI-XML for    default:Reihe_A/56/ZNA-2001-56a-0685.pdf 
 Identifier    ZNA-2001-56a-0685 
 Volume    56