http://nopr.niscpr.res.in/handle/123456789/39824 2026-10-08T18:00:33Z http://nopr.niscpr.res.in/handle/123456789/40058 Title: Some novel facets of molecular and supramolecular systems Authors: Rastogi, R P; Mishra, L Abstract: This article surveys in brief the developments in the building up of supramolecules through noncovalent interactions between molecules and their various applications. The major topics included in the present review are : self-assembly and supra molecules; construction of supramolecules through noncovalent interactions; characterization of supramolecules; molecular recognition and sensors; supramolecular reactivity, catalysis and transport processes; photochemistry of supramolecules, and, drug design and supramolecules. Page(s): 377-392 1998-05-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/40057 Title: Molar excess enthalpies of ternary mixtures containing nitrobenzene Authors: Kalra, K C; Sharma, V K; Katoch, Ashma Abstract: Molar excess enthalpies, <em>H</em> ^E_ijk of nitrobenzene (i) + benzene (j) + cyclohexane or +<em>n</em>-hexane or + <em>n</em>-heptane (k) ternary mixtures have been measured as a function of composition at 308.15 K. The observed. data have been analysed in terms of i) Flory's theory and ii) Sanchez and Lacombe theory of fluid mixtures. <em>H</em> ^E_ijk values predicted by Flory theory and Sanchez and Lacombe theory make only qualitative agreement. Page(s): 393-398 1998-05-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/40056 Title: Host-guest interactions: Part 3-Volumes of urea+ligand+water mixtures Authors: Bakshi, Mandeep Singh Abstract: The density measurements of urea (U) in aqueous &beta;- cyclodextrin(CYC) and 18-crown-6-ether (CR) of 0.0100 and 0.0170 mol dm^-3 of each have been made. Densities of urea have also been measured in CYC+CR+W ternary mixture with CYC:CR mole ratio of 1:1 (0.0170:0.0170). From density data, apparent molar volumes of urea (<em>V_ɸU</em>) have been computed. From -the variation in apparent molar volumes, It has been found that the presence of 0.0170 mol dm^-3 of CYC leads to some hydrophobic hydration of CYC by urea, whereas the presence of varying amounts of CR reduce the volume of urea in comparison to its volume in pure water. On the contrary, when both CYC and CR (0.0170 mol dm^-3 of each) are present in the same ternary mixture, the volume behaviour of urea becomes non-specific. Page(s): 399-403 1998-05-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/40055 Title: Liquid drops in rise against gravity through the immiscible water column: A fresh expression for the density of micro- quantity liquids by the method of correlation Authors: Srinivasan, G J; Thirunavukkarasu, G; Satyanarayana, P Abstract: A fresh expression arrived at through the method of correlation to determine the density of micro-quantity liquids in the rising drop method has been presented. The results obtained are found to be fairly accurate. The method requires very small quantity (0.5 µI) to determine the density of liquids lighter than as well as immiscible with water, and it also enables one to retrieve and preserve the sample for further analysis. The method is found to be simple, rapid and accurate. Page(s): 404-406 1998-05-01T00:00:00Z