Dataset Information

2-Butyl-5-pentyl-benzene-1,3-diol.

ABSTRACT: In the title compound, C(15)H(24)O(2), a natural dialkyl-resorcinol commonly named stemphol, the mol-ecules are linked into C(6) and C(2) (2)(4) chains and R(4) (4)(16) rings by inter-molecular O-H?O hydrogen bonds, creating mol-ecular sheets parallel to the (010) plane. The alkyl chains are directed orthogonally away from these planes in almost complete extension.

SUBMITTER: Jumpathong J

PROVIDER: S-EPMC2969635 | biostudies-literature | 2009 May

REPOSITORIES: biostudies-literature

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2-Butyl-5-pentyl-benzene-1,3-diol.

Jumpathong Juangjun J Retailleau Pascal P Abdalla Muna Ali MA Ouazzani Jamal J Lumyong Saisamorn S

Acta crystallographica. Section E, Structure reports online 20090523 Pt 6

In the title compound, C(15)H(24)O(2), a natural dialkyl-resorcinol commonly named stemphol, the mol-ecules are linked into C(6) and C(2) (2)(4) chains and R(4) (4)(16) rings by inter-molecular O-H⋯O hydrogen bonds, creating mol-ecular sheets parallel to the (010) plane. The alkyl chains are directed orthogonally away from these planes in almost complete extension. ...[more]

PMID: 21583216

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Project description:This paper presents the results of stationary fluorescence spectroscopy and time-resolved spectroscopy analyses of two 1,3,4-thiadiazole analogues, i.e. 4-(5-methyl-1,3,4-thiadiazol-2-yl)benzene-1,3-diol (C1) and 4-(5-heptyl-1,3,4-thiadiazol-2-yl)benzene-1,3-diol (C7) in an aqueous medium containing different concentrations of hydrogen ions. An interesting dual florescence effect was observed when both compounds were dissolved in aqueous solutions at pH below 7 for C1 and 7.5 for C7. In turn, for C1 and C7 dissolved in water at pH higher than the physiological value (mentioned above), single fluorescence was only noted. Based on previous results of investigations of the selected 1,3,4-thiadiazole compounds, it was noted that the presented effects were associated with both conformational changes in the analysed molecules and charge transfer (CT) effects, which were influenced by the aggregation factor. However, in the case of C1 and C7, the dual fluorescence effects were visible in a higher energetic region (different than that observed in the 1,3,4-thiadiazoles studied previously). Measurements of the fluorescence lifetimes in a medium characterised by different concentrations of hydrogen ions revealed clear lengthening of the excited-state lifetime in a pH range at which dual fluorescence effects can be observed. An important finding of the investigations presented in this article is the fact that the spectroscopic effects observed not only are interesting from the cognitive point of view but also can help in development of an appropriate theoretical model of molecular interactions responsible for the dual fluorescence effects in the analysed 1,3,4-thiadiazoles. Furthermore, the study will clarify a broad range of biological and pharmaceutical applications of these compounds, which are more frequently used in clinical therapies. Graphical Abstract Upper left corner - C7 molecule at high pH, right upper corner - fluorescence emission spectrum for C7 dissolved in H2O at high pH (7-12) - single fluorescence. Bottom left corner - C7 molecule at low pH (1-7), lower right corner - fluorescence emission spectrum for C7 dissolved in water at low pH - two fluorescence emissions. The circles indicate the group related to dissociation of molecules at low and high pH and the additional long circles indicate C1 or a molecule with a shorter acyl chain.

Dataset Information

2-Butyl-5-pentyl-benzene-1,3-diol.

Publications

2-Butyl-5-pentyl-benzene-1,3-diol.

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