ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic and geometric features of (.eta.5-C5H5)ML 16-electron fragments. A molecular orbital study ligand effectsPeter Hofmann Moothetty PadmanabhanCite this: Organometallics 1983, 2, 10, 1273–1284Publication Date (Print):October 1, 1983Publication History Published online1 May 2002Published inissue 1 October 1983https://pubs.acs.org/doi/10.1021/om50004a002https://doi.org/10.1021/om50004a002research-articleACS PublicationsRequest reuse...

Aluminosilicates with varying Al2O3:SiO2 molar ratios (3 : 1, 3 2, and 4) have been synthesized using a hybrid sol–gel route boehmite sol as the precursor for alumina tetraethyl orthosilicate (TEOS) silica. The synthesis of from aluminium nitrate, its use precursor, is cost effective compared to alkoxide precursors. Structural aspects, including bonding coordination, are studied in detail samples calcined temperature range 400–1400 °C both NMR FTIR spectroscopy: results correlated phase...

Abstract Metal oxides, in general, are known to exhibit significant wettability towards water molecules because of the high feasibility synergetic hydrogen-bonding interactions possible at solid-water interface. Here we show that nano sized phosphates rare earth materials (Rare Earth Phosphates, REPs), LaPO 4 particular, without any chemical modification, unique combination intrinsic properties including remarkable hydrophobicity could be retained even after exposure extreme temperatures and...

A new metal organic framework containing high density of active Cu sites demonstrates 100% oxidative conversion CO to CO2.

We report structural and magnetic properties of the spin-$\frac{1}{2}$ quantum antiferromagnet $\mathrm{Cu[}{\mathrm{C}}_{6}{\mathrm{H}}_{2}{(\mathrm{COO})}_{4}\mathrm{][}{\mathrm{C}}_{2}{\mathrm{H}}_{5}{\mathrm{NH}}_{3}\mathrm{]}{}_{2}$ by means single-crystal x-ray diffraction, magnetization, heat capacity, electron-spin-resonance (ESR) measurements on polycrystalline samples, as well band-structure calculations. The triclinic crystal structure this compound features ${\mathrm{CuO}}_{4}$...

Abstract EMI shielding materials and related research are of very relevance in this era electronic gadgets. Here report presents a binary thermoplastic blend nanocomposite system comprising poly‐(trimethylene terephthalate) polyethene compatibilized with multiwalled carbon nanotubes, which showing superior electromagnetic interference (EMI) compared to similar systems. The composition 90/10 ratio PTT/PE was the optimum properties when MWCNT concentration 1 wt% incorporated. compatibilization...

The present study investigates the effect of oral administration an alcoholic extract Tinospora cordifolia roots on antioxidant defence in alloxan-induced diabetes rats. A significant increase concentration thiobarbituric acid reactive substances (TBARS) liver and kidney was observed diabetic Decreased glutathione (GSH) decreased activities superoxide dismutase (SOD), catalase rats were also noted. Alcoholic root (TCREt) administered at a dose 100 mg/kg body weight to orally for six weeks...

The present study investigates the effect of oral administration an aqueous Enicostemma littorale whole plant extract on some key carbohydrate metabolic enzymes and antioxidant defence in alloxan-induced diabetes rats. Rats were rendered diabetic by alloxan (150 mgkg(-1) body weight) administration. Oral E. for 45 days increased activity hexokinase decreased activities glucose 6-phosphatase fructose 1,6-bisphosphatase significantly serum, liver kidney lowered concentration thiobarbituric...

We report a combined experimental and theoretical study of the spin $S=\frac{1}{2}$ nanomagnet Cu${}_{5}$(OH)${}_{2}$(NIPA)${}_{4}\ifmmode\cdot\else\textperiodcentered\fi{}$10H${}_{2}$O (Cu${}_{5}$-NIPA). Using thermodynamic, electron resonance, ${}^{1}$H nuclear magnetic resonance measurements on one hand, ab initio density-functional band-structure calculations, exact diagonalizations, strong-coupling theory other, we derive microscopic model Cu${}_{5}$-NIPA characterize dynamics this...

Herein we report the facile, green syntheses of three new polyoxomolybdate-based inorganic–organic hybrid materials using room temperature ionic liquid (RTIL), 1-butyl-3-methyl-imidazolium tetrafluoroborate (bmim)[BF4], as a and reactive solvent. The organic imidazolium component RTIL was incorporated into all structures, μ5-oxo octamolybdate cluster compound (bmim)3NH4[Mo8O26] (1) two Keggin-type compounds, one being charge transfer salt (bmim)4[PMoVMo11O40] (2) other having unreduced anion...

Abstract A facile and economic method is developed for the fabrication of new lightweight materials with high electromagnetic interference (EMI) shielding performance, good mechanical properties low electrical percolation threshold through melt mixing. Electrical properties, DC conductivity, EMI performance poly(trimethylene terephthalate) (PTT)/multiwalled carbon nanotube (MWCNT) nanocomposites varying filler loading MWCNTs were investigated. High‐resolution transmission electron microscopy...

Abstract The photogeneration of singlet oxygen ( 1 O 2 ) by tetrasodium salt meso ‐tetrakis(4‐sulfonatophenyl)porphyrins (H TPPS) and some its metal complexes (MTPPS; M = Cd 2+ , Zn ), immobilized on cationically functionalized polystyrene (PS) beads, was studied. generation monitored a N ‐dimethyl‐4‐nitrosoaniline (RNO) bleaching assay. rate RNO seen to be retarded in the presence DABCO, specific scavanger, providing evidence for involvement as an active intermediate. relative efficiencies...

Reaction of a molecular Co(II) maleate, [Co(Hmal)2(H2O)4], with pyridine yields fumarate, [Co(fum)(H2O)4], chain structure and chiral pyridylsuccinic acid zwitter ion, −OOC–CH(N+C5H5)–CH2–COOH, in almost quantitative yields, while the reaction 4,4′-bipyridine (bipy) on other hand, quantitatively generates polylmeric [Co(mal)(bipy)]n·(n/2)H2O along adduct fumaric bipyridine.

Abstract Graphene oxide was reduced (RGO) by naturally abundant potato starch and incorporated in phenol formaldehyde resin (PF). The PF/RGO nanocomposites were successfully fabricated the combination of solution processing compression molding. Here, composed 0.05 wt% to 1 RGO prepared. incorporation into PF matrix significantly affecting dynamic mechanical characteristics such as storage loss modulus tan δ . degree entanglement ( N ), effectiveness filler β f reinforcement efficiency factor...

Abstract The current report addresses the rheological and viscoelastic properties of poly (trimethylene terephthalate)/polyethylene blend system containing multiwall carbon nanotubes (MWCNTs). alliance MWCNT into raises both modulus dynamic viscosity. thermophysical nanocomposites exhibit a lower threshold percolation particularly in comparison to PTT/MWCNT. mechanical were also enhanced by adding higher storage value explains their reasonable load—bearing capacity inserting MWCNT....

Polymeric pyridinium chloride was synthesized by treating pyridine with 2% divinylbenzene (DVB)-crosslinked chloromethyl polystyrene. Sodium 5,10,15,20-tetrakis(4-sulfophenyl)porphyrin and appended on the above polymer through an ionic linkage. Cobalt(II) complex of polymeric porphyrin characterized chemically spectroscopically. This employed as catalyst for oxidation dithiocarbamates to thiuram disulfide. Electronic ESR spectra were analyzed before after catalysis. pH dependence catalytic...