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M.N.Sudheendra Rao

Bio: M.N.Sudheendra Rao is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Thermal decomposition & Chemical process of decomposition. The author has an hindex of 1, co-authored 1 publications receiving 5 citations.

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TL;DR: In this paper, the thermal decomposition behavior of phosphiniminocyclotrithiazenes has been studied for the first time by employing thermogravimetric (TG), differential thermal (DT), and differential scanning calorimetric methods.

5 citations


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TL;DR: The chemistry of simple acyclic aminophosphines (synthesis, characterization, reactivity and applications) is covered and particular focus is given to their ability to form chalcogenides along with their role played as ligands in coordination chemistry and as synthons in inorganic heterocyclic chemistry as mentioned in this paper.
Abstract: In recent years, research in organophosphorus chemistry has mainly focused in designing newer and better phosphorus ligands for synthesizing novel metal complexes with improved catalytic activities. Aminophosphines [tricoordinate phosphorus(III)–nitrogen systems] are considered as versatile compounds owing to the presence of nitrogen centres which, in principle, can influence additional reactivity features. They are quite sensitive to air and moisture due to the presence of polar PN bond(s). In spite of this, research in aminophosphine chemistry is gaining momentum day-by-day and this is due mainly to one reason: their rich behaviour as ligands in metal complex chemistry and subsequently in catalysis. Their role as synthons in inorganic heterocyclic chemistry has also helped produce new types of heterocycles. In this paper, the chemistry of simple acyclic aminophosphines (synthesis, characterization, reactivity and applications) is covered and particular focus is given to their ability to form chalcogenides along with their role played as ligands in coordination chemistry and as synthons in inorganic heterocyclic chemistry. Copyright © 2009 John Wiley & Sons, Ltd.

79 citations

Journal ArticleDOI
TL;DR: In this paper, the coordination behavior of several symmetrically and unsymmetrically substituted phosphiniminocyclotrithiazenes have been studied and shown to have different reduction potentials.
Abstract: Electrochemical (polarographic, cyclic voltammetric, and coulometric) and coordination behaviour of several symmetrically and unsymmetrically substituted phosphiniminocyclotrithiazenes have been studied. Polarograms of R3PN-S3N3 (R = C6H5, p-ClC6H4, p-H3CC6H4, and (OC4H8N)), Ph2(OC4H8N)PN-S3N3, and Ph(OC4H8N)2PN-S3N3 give two cathodic waves. Cyclic voltammograms of Ph3PN-S3N3 (1) and (OC4H8N)3PN-S3N3 (2) reveal nearly the same oxidation peak potential but different reduction potentials. Controlled potential electrolysis of 1 and 2 at +0.6 V indicates exocyclic cleavage and ring degradation. Cathodic reduction behaviour of Ph3PN-S3N3 suggests the possibility for the formation of 1,5-(Ph3PN)2S4N4 under electrochemical conditions. Reaction of nickel chloride hexahydrate with heterocycle 1 in 1:2 molar ratio in acetonitrile affords the complex, [Ni(S2N2H)2] (A) (90% yield) and [Ph3PNH2]Cl salt as products. Analogous reactions with other ligands of this type (two symmetrical (sym.) and three unsymmetrical (uns...

7 citations

Journal ArticleDOI
TL;DR: Iodination reactions of various phosphiniminocyclotrithiazenes [R3PNS3N3; R = (i) phenyl-, (ii) morpholino-, and (iii) p-chlorophenyl-] have been studied under different experimental conditions.
Abstract: Iodination reactions of various phosphiniminocyclotrithiazenes [R3PNS3N3; R = (i) phenyl-, (ii) morpholino-, and (iii) p-chlorophenyl-] have been studied under different experimental conditions. Iodination of Ph3PNS3N3 yields interesting products such as [(Ph3PN)2S3N3]I3, ((Ph3PN)3S)2I4, (Ph3PNH2)I3, ((Ph3PSI2)2I2, and [(Ph3PN)3SO]2I6 depending on the experimental conditions. All the products have been isolated and characterized by the spectroscopic and analytical techniques.

2 citations

Journal ArticleDOI
TL;DR: In this article, the chemistry of tetrasulfur tetranitride is studied and the reaction of symmetrically substituted R3PN-S3N3 [R = Ph, OC4H8N,...
Abstract: Though the chemistry of tetrasulfur tetranitride is very well developed and studied, that of phosphiniminocyclotrithiazenes is not. Reactions of symmetrically substituted R3PN-S3N3 [R = Ph, OC4H8N,...
Journal ArticleDOI
TL;DR: In this article, the stability aspects from the mass spectral fragmentation patterns of two phosphiniminocyclotrithiazenes of the type (C6H5)[(C 6H11)2N](R2N)P˭N−S3N3 [R‒Me (1) and n-Bu (2)].
Abstract: GRAPHICAL ABSTRACT Abstract This study has been directed toward understanding the stability aspects from the mass spectral fragmentation patterns of two phosphiniminocyclotrithiazenes of the type (C6H5)[(C6H11)2N](R2N)P˭N−S3N3 [R‒Me (1) and n-Bu (2)]. Most of the structural features of the two ring systems considered are comparable for both the heterocycles. Some of the fragments that are formed under the operated mass spectral conditions are SN, S2N2, S3N, S3N2, S3N3, and S3N4, among others. Most of these observed fragments are already known to exist either as stable entities or as oligomerized species, and they are found to possess various applications.