Proceedings of the Indian Academy of Sciences - Chemical Sciences
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The new physiology of vision
Proceedings of the Indian Academy of Sciences - Chemical Sciences - Tập 62 - Trang 310-313 - 1965
Studies on the nature of the racemic modifications of optically active compounds in the solid state
Proceedings of the Indian Academy of Sciences - Chemical Sciences - Tập 38 - Trang 502-515 - 1953
1. Roozeboom’s melting point-composition diagrams have been prepared for the camphor-β-sulphonates (d anddl) ofo-,m- andp-chloraniline and camphor-β-sulphonyl-o-,m- andp-chlorophenylamides (d anddl). Three curves were obtained in each case which showed that they were truedl compounds. 2. A freezing-point equation has been developed. The above mentioned Roozeboom curves have been discussed in relat...... hiện toàn bộ
Design of molecular ferromagnets
Proceedings of the Indian Academy of Sciences - Chemical Sciences - Tập 108 - Trang 521-532 - 1996
A large variety of molecular ferromagnets have been synthesized since the discovery of the first organic ferromagnets, including pure organic compounds, organometallic charge-transfer complexes, metal complex-organic radical compounds, and transition metal complexes coupled to organic radicals. Besides, there are many reports on the observation of ferromagnetism in polymers and organic matrix comp...... hiện toàn bộ
Force constants in the potential energy of a vibrating molecule
Proceedings of the Indian Academy of Sciences - Chemical Sciences - Tập 58 - Trang 1-5 - 1963
A new and elegant method, based on group theory, has been given for obtaining the maximum number of force constants needed in expressing the potential energy of a vibrating molecule characterised by a certain point group symmetry.
Synthesis and antimicrobial activity of some novel thienopyrimidines and triazolothienopyrimidines
Proceedings of the Indian Academy of Sciences - Chemical Sciences - Tập 121 - Trang 301-307 - 2009
Novel tricyclic thienopyrimidines (3, 5, 6, 9, 11, 12) and triazole fused tetracyclic thienopyrimidines (4a-c, 10a-c) were synthesized from precursors 2-amino-6-methyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carbonitrile 1 and 2-amino-7-oxo-4,5,6,7-tetrahydro-1-benzothio-phene-3-carbonitrile 7 respectively. The corresponding precursors were prepared by employing the Gewald reaction. The structures o...... hiện toàn bộ
Ammoxidation of 2-methyl pyrazine on supported ammonium salt of 12-molybdophosphoric acid catalysts: The influence of nature of support
Proceedings of the Indian Academy of Sciences - Chemical Sciences - Tập 126 - Trang 487-498 - 2014
Influence of the nature of support on the formation of catalytically active species was investigated to clarify the key factor for the synthesis of supported ammonium salt of 12-molybdophosphoric acid (AMPA) catalyst which maintains the activity of ammoxidation during 2-methylpyrazine reaction. With this aim, different loadings of niobia-, silica- and alumina-, supported AMPA catalysts were prepar...... hiện toàn bộ
Iron(III) and copper(II) complexes of trans-bis(ferrocenyl)porphyrin: Effect of metal ions on long-range electronic communication
Proceedings of the Indian Academy of Sciences - Chemical Sciences - Tập 127 - Trang 327-335 - 2015
A series of complex with a general formula of M(Fc2Ph2P) [Fc2Ph2P = 5,10-bisferrocenyl-15,20-bisphenylporphyrin (2 −); M = Fe(III)Cl Fe(III)(ClO4) and Cu(II)] have been synthesized and characterized. The single crystal X-ray structure of Cu II(Fc2Ph2P) has been reported in which two ferrocene moieties are in anti form with respect to each other. The ferrocenyl groups of Cu II(Fc2Ph2P) are more eas...... hiện toàn bộ
Application of $$\hbox {SiO}_{{2}}$$ nanoparticles as an efficient catalyst to develop syntheses of perimidines and tetraketones
Proceedings of the Indian Academy of Sciences - Chemical Sciences - Tập 131 - Trang 1-10 - 2019
In this paper, we explore the catalytic activity of
$$\hbox {SiO}_{{2}}$$
nanoparticles (NPs) as an eco-friendly, efficient and reusable catalyst in the synthesis of 2,3-dihydro-1H-perimidines as well as tetraketones. For tetraket...... hiện toàn bộ
Kinetic studies in ester hydrolysis
Proceedings of the Indian Academy of Sciences - Chemical Sciences - Tập 32 - Trang 85-94 - 1950
The kinetics of the hydrolysis of ethyl acetate in acetone-water and dioxane-water systems are reported. The rate constant passes through a minimum when the concentration of the organic solvent in the medium is in the neighbourhood of 80%. The temperature variation conforms strictly to the Arrhenius equation even for media containing extremely high proportions of organic solvent. Even though the a...... hiện toàn bộ
Anthraquinone and anthrone series
Proceedings of the Indian Academy of Sciences - Chemical Sciences - Tập 32 - Trang 39-45 - 1950
9-Aminobenzanthrone, which has been prepared earlier by a tedious synthesis, has now been prepared from 3-bromobenzanthrone by nitration to 3-bromo-9-nitrobenzanthrone, reduction of the nitro derivative to 3-bromo-9-aminobenzanthrone, and debromination of the latter compound by palladium and hydrazine. 3∶12-Diaminodibenzanthrone (VIII) was formed as a minor product in the debromination. While the ...... hiện toàn bộ
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