Vibrational zero-point energies ZPEs , as determined from published spectroscopic constants, are derived for 85 diatomic molecules. Standard uncertainties are also provided, including estimated contributions from bias as well as the statistical uncertainties propagated from those reported in the spectroscopy literature. This compilation will be helpful for validating theoretical procedures for ...

We demonstrate a new nanoscale spectroscopic technique that combines subwavelength near-field imaging with broadband interference spectroscopy. We apply this technique to study phase spectra of surface plasmons in individual gold nanoparticles and nanoparticle dimers. Collective plasmon oscillations in selected nanostructures are excited by a femtosecond white-light continuum transmitted throug...

The equilibrium structure and potential energy surface of magnesium monohydroxide in its ground doublet state, X S MgOH, have been determined from large-scale ab initio calculations using the spin-restricted coupled-cluster method, RCCSD~T!, with basis sets of double-through quintuple-zeta quality. The effects of core-electron correlation on the calculated molecular parameters were investigated...

Objective - A well-known herbal toothpowder was evaluated & standardized for its Piperine contents. Methods-The formulation was subjected for physical constants like Moisture content, Ash value, and Extractive values in various solvents including Petroleum ether, Ethanol and Water. Thin layer chromatography and spectroscopic studies was carried out for the qualitative analysis of Piperine conte...

Chemical investigation of a Fijian ascidian, Polyandrocarpa sp., has resulted in the isolation of two new 2-aminoimidazolone-derived compounds, polyandrocarpamines A (1) and B (2). The structures of these unique metabolites were determined by the interpretation of spectroscopic data and confirmed by total synthesis. The stereospecific synthesis of 1 was accomplished using aldol condensation che...

In this work, we study the controlled doping of thin films of substituted nickel phthalocyanine, NiPcR8, where R=-SC6H13, with anthracene and TCNQ and investigate the effects of the extent of this doping on the optical and electrical properties of NiPcR8 films. Optical constants, namely index of refraction (n) and extinction coefficient (k) have increased for both types of doping, as determined...

ABSTRACT We estimate the solar peculiar velocities and Oort constants using a sample of 5627 A-type stars with $d\lt 0.6\, \rm kpc$ $|z|\lt 0.1\, kpc$, selected from LAMOST (Large Sky Area Multi-Object Fiber Spectroscopic Telescope) surveys. The radial tangential these are fitted by non-axisymmetric model. best-fitting result yields $(U_\odot ,V_\odot ,W_\odot)=(11.69\pm 0.68, 10.16\pm 0.51, 7....

From the leaves of Aquilaria sinensis (LOUR.) GILG, a novel benzophenone glucoside, designated as aquilarinoside A (1), and a new flavonoid, as 7-beta-D-glucoside of 5-O-methylapigenin (2), along with eight known compounds (3-10) were isolated. The structures of 1 and 2 were fully characterized by spectroscopic methods (1D, 2D NMR and MS) and the relative stereochemistry was assigned based on n...

6Li, 15N, and 13C NMR spectroscopic investigations of [6Li,15N]lithium hexamethyldisilazide ([6Li,15N]LiHMDS) coordinated by 29 polyamines, polyethers, and aminoethers reveal a range of structural types including η1-coordinated monoand disolvated dimers, η2-coordinated (3-coordinate) monomers, η1,η2-coordinated (4-coordinate) monomers, η2,η2-coordinated (5-coordinate) monomers, polymers (linked...

We review both the theoretical electromagnetic response and the spectroscopic measurements of metamaterials. To critically examine published results for metamaterial structures operating in the range from terahertz to optical frequencies, we focus on protocols allowing one to extract the optical constants from experimental observables. We discuss the complexity of this task when applied to meta...