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Now showing items 1-20 of 3247

1,2-Benzoquinones in diels alder reactions, dipolar cycloadditions, nucleophilic additions, multicomponent reactions and more

Vijay Nair, G; Rajeev S Menon; Biju, A T; Abhilash, G (RSC Publishing, 2012)

A brief account of the recent developments in the chemistry of 1,2-benzoquinones is presented in this tutorial review. The title compounds exhibit commendable versatility in both Diels–Alder and dipolar cycloaddition ...
1,3-Metal-carbon bonding predicts rich chemistry at the edges of aromatic hydrocarbons

Suresh, C H; Frenking, G (American Chemical Society, 2013)

The existence of a hitherto unrecognized 1,3-metal-carbon bond (1,3-MC bond) in particular types of transition-metal complexes is proposed using evidence from CCD X-ray structure analysis and DFT calculations. The name ...
1,3-Metal−carbon bonding and alkyne metathesis: DFT investigations on model complexes of group 4, 5, and 6 transition metals

Suresh, C H; Frenking, G (American Chemical Society, 2012-10-22)

The formation of metallacyclobutadienes (MCBs from chloro-ligated alkylidyne complexes of group 4, 5, and 6 transition metals (MCln(C3H3)) has been studied at the BP86/ def2-TZVPP level. All the MCBs showed M−Cβ distances ...
1,3-Phenyl linked urea-based receptors for anions and the facile cyclization to imidazolidinedione

Haridas, V; Sandhya, S; Geeta, H; Suresh, C H (Elsevier, 2012-10-10)

Amino acid-based molecules containing a bis-urea moiety have been synthesized and demonstrated for their anion binding affinities. Compound 1c binds phosphate and sulfate with binding constants of 3.6 103 M 1 and 4.3 ...
1,4-Dipolar Cycloadditions and Related Reactions

Vijay Nair, G; Ani Deepthi; Devipriya, A; Anabha, E R; Paul, R R (Elsevier, 2014-05-13)
(1-x)MgAl2O4-xTiO(2) dielectrics for microwave and millimeter wave applications

Surendran, K P; Bijumon, P V; Mohanan, P; Sebastian, M T (Springer, 2005)

The MgAl2O4 ceramics were prepared by the conventional solid-state ceramic route and the dielectric properties studied in the microwave frequency region (3-13 GHz). The phase purity and crystal structure were identified ...
1D molecular ladder of the ionic complex of terbium-4-sebacoylbis(1-phenyl-3-methyl-5-pyrazolonate) and sodium dibenzo-18-crown-6: Synthesis, crystal structure, and photophysical properties

Remya, P N; Biju, S; Reddy, M L P; Cowley, A H; Findlater, M (American Chemical Society, 2008)

On the basis of the novel heterocyclic beta-diketone, 4-sebacoylbis(1-phenyl-3-methyl-5-pyrazolone (H2SbBP), three new lanthanide complexes Tb-2(SbBP)(3)(H2O)(2) (1), Gd-2(SbBP)(3)(H2O)(2) (2), and [Tb(SbBP)(2)] [Na(DB18C6)H2O] ...
(1E,3E)-1,4-Bis(4-methoxyphenyl)buta- 1,3-diene

Gopinathan Narayan; Rath, N P; Suresh Das (IUCR, 2010-09-16)

The title compound, C18H18O2, which exhibits blue emission in the solid state, is an intermediate in the preparation of liquid crystals and polymers. The molecule is located on an inversion centre. In the crystal, ...
2-Hydroxy-1,4-naphthoquinone [Lawsone] integrated rare-earth hybrid materials as biocompatible UV/IR filter agents

Narayanan, S V; Kumar, M; Gnanaraj, V R; Rajan, S C; Selvaraj, V; Ananthakumar, S (Wiley Online, 2023-01-27)

UV filter agents are essential ingredients in cosmetics and fabrics for rendering the property of protection from harmful UV radiation. The focus of this research was on the development of biocompatible hybrid UV/IR filter ...
2-Thia-1,3,5-triaza-7-phosphaadamantane-2,2-dioxide revisited: Computational and experimental studies of a neglected phosphine

Sternberg, M; Suresh, C H; Mohr, F (American Chemical Society, 2010)

The cage-phosphine 2-thia-1,3,5-triaza-7-phosphaadamantane-2,2-dioxide (PASO(2)) was reacted with various transition metal precursors to give the complexes cis-[Mo(CO)(4)(PASO(2))(2)], [AuCl(PASO(2))] cis-[PtCl(2)(PASO(2))(2)], ...
2-Thiopheneacetato-based one-dimensional coordination polymer of Tb3+: Enhancement of terbium-centered luminescence in the presence of bidentate nitrogen donor ligands

Shyni, R; Reddy, M L P; Cowley, A H; Findlater, M (Wiley, 2008)

Four new lanthanide(III) complexes of 2-thiopheneacetic acid (HTPAC), [Tb(TPAC)(3)center dot H2O](n) (1), [Gd(TPAC)(3)center dot H2O](n) (2), [Tb(TPAC)(3)(phen)](2) (3) and [Tb(TPAC)(3)(bath)](2) (4) (phen = 1,10-phenanthroline; ...
22 pi smaragdyrin molecular conjugates with aromatic phenylacetylenes and ferrocenes: Syntheses, electrochemical, and photonic properties

Misra, R; Kumar, R; Chandrashekar, T K; Suresh, C H; Nag, A; Goswami, D (American Chemical Society, 2006)

Syntheses, spectroscopic, electrochemical, and third-order nonlinear optical susceptibilities of a series of 22 pi smaragdyrins and their corresponding Rh(I) derivatives bearing phenylacetylene substituents and ...
26 pi Aromatic core-modified hexaphyrins: Syntheses, characterization, and structural diversities

Misra, R; Kumar, R; Chandrashekar, T K; Joshi, B S (American Chemical Society, 2007)

Synthesis and characterization of several 26 pi core-modified hexaphyrins are reported. The synthetic methodology involved a well-known acid-catalyzed MacDonald-type condensation reaction of the required tripyrrane with ...
28π Non‐Fused Hexaphyrin: Synthesis, Protonation Triggered Möbius Aromaticity and Structural Properties

Dash, S; Ghosh, A; Bandyopadhyay, S; Kalita, P; Vishwakarma, R; Srinivasan, A; Suresh, C H; Chandrashekar, T K (Wiley Online, 2023-10-16)

Synthesis of core-modified 28π non-fused hexaphyrin is reported. The optical and 1H NMR spectral analysis reveals the non-aromatic nature of the macrocycle in its freebase form at 298 K. However, the non-aromatic nature ...
2D static failure prediction for critical stresses of an automobile tire side walls using MATLAB PDE toolbox

Ihueze, C C; Mgbemena, C O; Menon, A R R (IOSR, 2014)

Critical stresses responsible for static failure of tire sidewalls were predicted using MATLAB PDE Toolbox.A model ofthe tire sidewall was developed using the PDE toolbox GUI draw tool and the parameters characterizing the ...
2‐Hydroxy‐1,4‐naphthoquinone [Lawsone] Integrated Rare‐earth Hybrid Materials as Biocompatible UV/IR Filter Agents

Narayanan, S V; Kumar, M; Gnanaraj, V R; Rajan, S C; Selvaraj, V; Ananthakumar, S (Wiley, 2023-03)

UV filter agents are essential ingredients in cosmetics and fabrics for rendering the property of protection from harmful UV radiation. The focus of this research was on the development of biocompatible hybrid UV/IR filter ...
3,4,5- Trisbenzyloxy benzoic acid as a new photo-sensitizer for Tb3+ ion

Reshmi, J R; Biju, S; Reddy, M L P (Elsevier, 2007-09)

A novel and highly conjugated aromatic carboxylic acid,3,4,5-trisbenzyloxy benzoic acid (TBBA) and the corresponding Tb3+ complex has been synthesized and characterized by various spectroscopic techniques. The room ...
3-Phenyl-4-acyl-5-isoxazolonate complex of Tb3+ doped into poly-beta-hydroxybutyrate matrix as a promising light-conversion molecular device

Biju, S; Reddy, M L P; Cowley, A H; Vasudevan, K V (Royal Society of Chemistry, 2009)

A novel class of efficient antenna complexes of Tb3+ based on the use of 3-phenyl-4-acyl-5-isoxazolone ligands has been designed, synthesized, characterized and their photophysical properties evaluated. The new heterocyclic ...
3-phenyl-4-aroyl-5-isoxazolonate complexes of Tb3+ as promising light-conversion molecular devices

Biju, S; Reddy, M L P; Freire, R O (Elsevier, 2007)

New tris(3-phenyl-4-aroyl-5-isoxazolonate)terbium(III) complexes have been synthesized and characterized by various spectroscopic techniques. Due to an efficient energy transfer from the heterocyclic beta-cliketonate ligand ...
3-phenyl-4-benzoyl-5-isoxazolonate complex of Eu3+ with tri-n-octylphosphine oxide as a promising light-conversion molecular device

Rani Pavithran; Saleesh Kumar, N S; Biju, S; Reddy, M L P; Junior, S A; Freire, R O (American Chemical Society, 2006)

Three new europium complexes, [Eu(PBI)(3)(.)3H(2)O] (1), [Eu(PBI)(3)(.)2TOPO] (2), and [Eu(PBI)(3)(.)2TPPO(.)H(2)O] (3) (where HPBI, TOPO, and TPPO stand for 3-phenyl-4-benzoyl-5-isoxazolone, tri-n-octylphosphine oxide, ...

Now showing items 1-20 of 3247

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