Synthesis and Thermotropic Properties of Some New Schiff Bases, N-[4-(4-n-Alkanoyloxybenzoyloxy)-2-Hydroxybenzylidene]-4-Cyano-, 4-Hydroxy-, 4-Thio- and 4-Nitroanilines
A series of elongated Schiff base esters containing three aromatic rings with hexadecanoyl chain as one of the terminal group and various R substituents (R = CN, OH, SH, and NO2) at the other end of molecule were prepared, and their structures were confirmed via physical measurement. The thermotropi...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | E-Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2012/276327 |
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| author | Sie-Tiong Ha Guan-Yeow Yeap Peng-Lim Boey |
| author_facet | Sie-Tiong Ha Guan-Yeow Yeap Peng-Lim Boey |
| author_sort | Sie-Tiong Ha |
| collection | DOAJ |
| description | A series of elongated Schiff base esters containing three aromatic rings with hexadecanoyl chain as one of the terminal group and various R substituents (R = CN, OH, SH, and NO2) at the other end of molecule were prepared, and their structures were confirmed via physical measurement. The thermotropic properties of these compounds were investigated via differential scanning calorimetry and polarizing optical microscopy. The thermal data indicate that all of these compounds exhibit mesomorphic properties. Whilst compounds with R = OH, SH and NO2 show nematic phases, compound containing cyano substituent are smectogenic in nature. |
| format | Article |
| id | doaj-art-c8550974c7f042e3b8abc34a27ad5a1f |
| institution | Kabale University |
| issn | 0973-4945 2090-9810 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | E-Journal of Chemistry |
| spelling | doaj-art-c8550974c7f042e3b8abc34a27ad5a1f2025-02-03T05:51:25ZengWileyE-Journal of Chemistry0973-49452090-98102012-01-01942550255610.1155/2012/276327Synthesis and Thermotropic Properties of Some New Schiff Bases, N-[4-(4-n-Alkanoyloxybenzoyloxy)-2-Hydroxybenzylidene]-4-Cyano-, 4-Hydroxy-, 4-Thio- and 4-NitroanilinesSie-Tiong Ha0Guan-Yeow Yeap1Peng-Lim Boey2Department of Chemical Science, Faculty of Science, Universiti Tunku Abdul Rahman, Jln Universiti, Bandar Barat, Kampar, 31900 Perak, MalaysiaLiquid Crystal Research Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, MalaysiaLiquid Crystal Research Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, MalaysiaA series of elongated Schiff base esters containing three aromatic rings with hexadecanoyl chain as one of the terminal group and various R substituents (R = CN, OH, SH, and NO2) at the other end of molecule were prepared, and their structures were confirmed via physical measurement. The thermotropic properties of these compounds were investigated via differential scanning calorimetry and polarizing optical microscopy. The thermal data indicate that all of these compounds exhibit mesomorphic properties. Whilst compounds with R = OH, SH and NO2 show nematic phases, compound containing cyano substituent are smectogenic in nature.http://dx.doi.org/10.1155/2012/276327 |
| spellingShingle | Sie-Tiong Ha Guan-Yeow Yeap Peng-Lim Boey Synthesis and Thermotropic Properties of Some New Schiff Bases, N-[4-(4-n-Alkanoyloxybenzoyloxy)-2-Hydroxybenzylidene]-4-Cyano-, 4-Hydroxy-, 4-Thio- and 4-Nitroanilines E-Journal of Chemistry |
| title | Synthesis and Thermotropic Properties of Some New Schiff Bases, N-[4-(4-n-Alkanoyloxybenzoyloxy)-2-Hydroxybenzylidene]-4-Cyano-, 4-Hydroxy-, 4-Thio- and 4-Nitroanilines |
| title_full | Synthesis and Thermotropic Properties of Some New Schiff Bases, N-[4-(4-n-Alkanoyloxybenzoyloxy)-2-Hydroxybenzylidene]-4-Cyano-, 4-Hydroxy-, 4-Thio- and 4-Nitroanilines |
| title_fullStr | Synthesis and Thermotropic Properties of Some New Schiff Bases, N-[4-(4-n-Alkanoyloxybenzoyloxy)-2-Hydroxybenzylidene]-4-Cyano-, 4-Hydroxy-, 4-Thio- and 4-Nitroanilines |
| title_full_unstemmed | Synthesis and Thermotropic Properties of Some New Schiff Bases, N-[4-(4-n-Alkanoyloxybenzoyloxy)-2-Hydroxybenzylidene]-4-Cyano-, 4-Hydroxy-, 4-Thio- and 4-Nitroanilines |
| title_short | Synthesis and Thermotropic Properties of Some New Schiff Bases, N-[4-(4-n-Alkanoyloxybenzoyloxy)-2-Hydroxybenzylidene]-4-Cyano-, 4-Hydroxy-, 4-Thio- and 4-Nitroanilines |
| title_sort | synthesis and thermotropic properties of some new schiff bases n 4 4 n alkanoyloxybenzoyloxy 2 hydroxybenzylidene 4 cyano 4 hydroxy 4 thio and 4 nitroanilines |
| url | http://dx.doi.org/10.1155/2012/276327 |
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