Mesogenic properties of single ring compounds: Dipentyl derivatives of p-carboranes and bicyclo [2.2.2] octane

Journal of Materials Chemistry

Volumn 9, Issue 3, 1999, Pages 683-686

  Douglass, Andrew G ^a   Both, Birgit ^a   Kaszynski, Piotr ^a  

^a VANDERBILT UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

BICYCLO COMPOUND; CARBORANE DERIVATIVE;

ARTICLE; CHEMICAL ANALYSIS; CONFORMATIONAL TRANSITION; CRYSTALLIZATION; ENTHALPY; LIQUID CRYSTAL; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; STRUCTURE ANALYSIS; SYNTHESIS; TEMPERATURE DEPENDENCE; VISCOSITY;

EID: 0032904984     PISSN: 09599428     EISSN: None     Source Type: Journal    
DOI: 10.1039/a807596d     Document Type: Article

References (19)

1. 1 The only exceptions observed thus far are for those capable of forming intermolecular hydrogen bonding (e.g., carboxylic acids, diols) or with partially stiffened tails using e.g. fluorocarbons (S. Takenaka, Chem. Commun., 1992, 1748) and sigmatropic interactions (A. Mori, H. Takeshita, K. Kida and M. Uchida, J. Am. Chem. Soc., 1990, 112, 8635). For other examples see V. Vill, LiqCryst 3.1 database, LCI Publisher GmbH, Hamburg, Germany (http://liqcryst.chemie.uni-hamburg.de).
2. 1 The only exceptions observed thus far are for those capable of forming intermolecular hydrogen bonding (e.g., carboxylic acids, diols) or with partially stiffened tails using e.g. fluorocarbons (S. Takenaka, Chem. Commun., 1992, 1748) and sigmatropic interactions (A. Mori, H. Takeshita, K. Kida and M. Uchida, J. Am. Chem. Soc., 1990, 112, 8635). For other examples see V. Vill, LiqCryst 3.1 database, LCI Publisher GmbH, Hamburg, Germany (http://liqcryst.chemie.uni-hamburg.de).
3. 1 The only exceptions observed thus far are for those capable of forming intermolecular hydrogen bonding (e.g., carboxylic acids, diols) or with partially stiffened tails using e.g. fluorocarbons (S. Takenaka, Chem. Commun., 1992, 1748) and sigmatropic interactions (A. Mori, H. Takeshita, K. Kida and M. Uchida, J. Am. Chem. Soc., 1990, 112, 8635). For other examples see V. Vill, LiqCryst 3.1 database, LCI Publisher GmbH, Hamburg, Germany (http://liqcryst.chemie.uni-hamburg.de).
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17. 15 The virtual transitions were extrapolated from a single data point and that for the pure host (ref. 2). The danger of such a procedure is apparent from the case of 2 for which some deviation from linearity is observed.
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19. NI] for 1,4-dipentylbenzene (4[1]b) in the host, b) equal treatment of N-I and S-I transitions for [2]c, c) equal effect of extending pentyl chain to the heptyl chain on mesogenic properties in the series.