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Indian Journal of Chemistry

Sect. A: Inorganic, Bio-inorganic, Physical, Theoretical & Analytical





MARCH 2004





Rapid Communication


Design of neutral hydrocarbons having a planar tetracoordinate carbon








U Deva Priyakumar & G Narahari Sastry*




  A new bonding mode wherein the planar tetracoordinated arrangement is more stable than the tetrahedral form is proposed.



Lyotropic liquid crystals formed in 3-dodecyloxy-2-hydroxypropyl trimethyl ammonium bromide--n-butanol--n-decane--water system


Lan-Ying Zhu, Xi-Lian Wei, Qing Sang, Bao-Lin Yin & De-Zhi Sun*






Model studies on segregation and catalytic properties of  supported Pt-Rh  nanocatalysts


Abir De Sarkar & Badal C Khanra*



Model investigations on the surface composition and catalytic activity of supported Pt-Rh nanocatalysts and their dependence on the impurity and the metal-support interactions have been presented. Monte-Carlo simulations indicate that sulphur can influence the surface composition very strongly; but the influence of metal-support interaction on the surface composition is insignificant.




Surface properties and catalytic activity for cyclohexanol decomposition of ceria loaded rutile and their sulphated analogues


J Babu, K R Sunajadevi & S Sugunan*


Ceria loaded rutile samples with different percentages of ceria and their sulphated analogues have been synthesized and characterized. Vapour phase decomposition of cyclohexanol performed over all the systems reveals that sulphation of the ceria loaded systems leads to selective catalysts for cyclohexene formation.


 UV/visible luminescence from photoproducts in infrared multiphoton dissociation of acrylonitrile


K K Pushpa, Awadhesh Kumar, P D Naik &

A V Sapre*


 Infrared multiphoton dissociation studies are reported  on acrylonitrile at pressures of ~ 10 torr by irradiation at
976 cm-1 by a TEA CO2 laser. The stable products on irradiation have been found to be H2, C2H2 and C2H4. With increased laser energy, the radical pathways compete with the molecular elimination channels leading to extensive decomposition of acrylonitrile.



 Poly(o-toluidine-co-o-chloroaniline) copolymers: Effect of polymerization conditions on the properties of the copolymers  


P Savitha & D N Sathyanarayana*


 Fully substituted polyaniline derivatives are synthesized by chemical copolymerization of o-toluidine with o-chloroaniline by three different methods to note the effect of synthesis conditions.and their structures determined. The copolymers are soluble in DMSO and their conductivities are generally higher than those of the homopolymers.


Liquid membrane phenomena : Degree of coupling and electrokinetic energy conversion in liquid membranes generated by Triton X-100


Abhay K Jain*  & Jai P Upadhyay



.The transport coefficients of liquid membranes generated by triton X-100 in series array with a supporting membrane have been evaluated from the coefficients of total composite series membrane. The trends observed in resistance coefficients, degree of coupling and energy conversion corresponding to liquid membranes suggest that the liquid membranes generated at the interface are stabilized when ethylene glycol is added in the dispersion.


Viscosities and electrical conductances of some tetraalkylammonium and common ions in aqueous binary mixtures of N,N-dimethyl -acetamide  at 298.15K


 Debashis  Das & Dilip K Hazra*


Electrical  conductance measurements are reported for tetraalkylammonium bromides, sodium bromide and sodium tetraphenyl borate in binary mixture of  N,N-dimethylacetamide  and water. The  results have been interpreted considering  the selective solvation, size and structure forming effect of ions and also the movement of ions in a strongly hydrogen bonded solvent system.



Halogen oxidation of some diarylthiourea carbonyl complexes of chromium and molybdenum



A K Shrimal* , Amar Nath &

Amar Srivastava


Halogen oxidation of several sym-diarylthioureas (L), viz., sym-diphenylthiourea, sym-di-o-tolylthiourea), sym-di-o-anisidylthiourea and sym-di-a-naphthylthiourea  chromium and molybdenum carbonyls have been studied. The species isolated are heptacoordinated [(L)Mo(CO)4X2], hexacoordinated [(L)Cr(CO)4X]X and [(L)Cr(CO)3X2] (X = Br or I).



A  study on heterobimetallic chemistry of polyfunctional  bis(2-hydroxy-1-naphthaldehyde) malonoyldihydrazone: Dioxouranum(VI), dioxomolybdenum(VI), zinc(II), copper(II), nickel(II)  and  cobalt(II) complexes



R A Lal*, J Chakraborty, A Kumar,  S Bhaumik, R K Nath  & D  Ghosh









NMR studies of  N - vinyl pyrrolidone / 4 - vinyl pyridine copolymers.




Sunita Hooda*, Rajeev Kumar & Manpreet Kaur


 N- Vinyl pyrrolidone / 4 - vinyl pyridine  copolymers of different composition have been prepared by free radical bulk polymerization using benzoyl peroxide as an initiator. The complete spectral assignment of 13C{1H}- NMR and 1H-NMR spectra has been done with the help of distortionless enhancement by polarization transfer and two dimensional heteronuclear single quantum coherence spectroscopy.


 Kinetics and mechanism of bromination of phenols by sodium bromate - sodium bisulphite reagent in water - acetonitrile mixture


J Viroopakshappa & V Jagannadham*





Synthesis and characterization of organogallium complexes derived from  2-(hydroxy)pyridine,
2-(hydroxy methyl)pyridine and 2-(2-hydroxy ethyl)pyridine


Nisha P Kushwah , Dimple P Dutta  & Vimal K Jain*


 R3Ga.Et2O  +  HO(CH2)nC5H4   


[R2Ga{O(CH2)nC5H4N}] + RH +  Et2O


R3Ga.Et2O  +  2HO(CH2)nC5H4N


[RGa{O(CH2)nC5H4N}2] + 2RH + Et2O 


Synthesis of phenylamino bis(dichlorophosphine oxide) and its complexes with group 12 metals


 Srinivasan Priya & Maravanji S Balakrishna*




Dioxomolybdenum(VI) and dioxouranium(VI) complexes of tetradentate amidate ligands


Mannar R Maurya* & Neha Singh


 The ligands (LH2) obtained by the condensation of methylsalicylate and 1,2-diaminoethane, 1,2-diaminopropane or 1,3-diamino- propane  react with [MoO2(acac)2] or UO2(CH3COO)2 in 1:1 molar ratio in refluxing methanol to give complexes of the formula [MoO2L] and [UO2L. MeOH], respectively.


 Synthesis, spectral and electrochemical studies on Fe (III) and  Mn (II) complexes with a tridentate ligand carrying pendant benzimidazolyl groups



Lata Nohria & Pavan Mathur*





 Dinitrosylmolybdenum(0) complexes of catalytic and environmental relevance: A novel single step synthesis of dinitrosylmolybdenum(0) complexes of {Mo(NO)2}6* electron configuration involving biologically active 8-hydroxyquinoline- sulphonamides directly from molybdate(VI) and their characterization


R C Maurya*, A K Singh & S Rajput





 Synthesis and physico-chemical studies on transition metal complexes of macrocyclic ligand derived from 2,6-diacetylpyridine dihydrazone


 Mohammad Shakir*, Poonam Chingsubam, Hamida-Tun-Nisa Chishti, Yasser Azim & Nishat Begum



Synthesis and characterization of indole-3-acetates and indole-3-butyrates of Mo(VI) and W(VI)


Haq N Sheikh*, Ashaq Hussain, Madhu Sharma & Bansi L Kalsotra


 Reaction of indole-3-acetic acid and indole-3-butyric acid with MoO3 and WO3 in aqueous ammonia afford complexes of the type MO2(In-3-Ac)2 and MO2(In-3-Bu)2 (M=Mo or W) containing cis O=M=O bonds. Indole-3-carboxylates are coordinated to the metal ion in a symmetrical bidentate fashion through two oxygen atoms of carboxylate group.


 Synthesis and characterization of schiff base derivatives of bimetallic[Mg(II); Al(III)]-m-oxoisopropoxide


Harish K Sharma* & Pramesh N Kapoor





Quinoline-8-thiol functionalized solid phase extractant for the preconcentration of ultratrace amounts of mercury(II)


Rosilind Mathew, A Maria starvin &T Prasada Rao*


 A solid material consisting of quinoline-8-thiol functionalized naphthalene provides a convenient, rapid and economical method for preconcentration of mercury. The mercury-quinoline-8-thiol complex is quantitatively retained on naphthalene in the pH range 5.0-7.0.


 A facile spectrophotometric method for the determination of  hypochlorite  using  azure B


B Narayana*, K Vipin,  Mendalin Mathew & N V Sreekumara


 A simple, rapid and sensitive spectrophotometric method
has been developed for the determination of hypochlorite using azure B. The method is based on the reaction of hypochlorite with potassium iodide in acidic medium to liberate iodine. The method has been successfully applied to the determination of hypochlorite in some real samples.



 Extractive spectrophotometric determination of molybdenum(VI) using 3-hydroxy-2-(4-methoxy phenyl)-6-propionyl-4H-chromen-4-one as a new reagent.


Rameshwar Dass*, Anil Kumar &   R G  Sharma


A sensitive spectrophotometric method has been developed for the determination of molybdenum(VI) using 3-hydroxy-2-(4-methoxyphenyl)-6-propionyl-4H hromen-4-one.The metal ion forms a yellow complex with the reagent in acetic acid medium. The method is simple, selective, precise and rapid and has been applied satisfactorily to the determination of molybdenum in various steels and a wide variety of synthetic samples.


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