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Further monoterpene chromane esters from Peperomia obtusifolia: VCD determination of the absolute configuration of a new diastereomeric mixture
(Pergamon-Elsevier B.V. Ltd, 2012-11-07)
A reinvestigation of the monoterpene chromane ester enriched fraction from Peperomia obtusifolia using chiral chromatography led to the identification of a minor peak, which was elucidated by NMR and HRMS as fenchyl-3,4- ...
Joint conomic design of x̄ and R charts under Weibull shock models
(2000-09-10)
This paper deals with the joint economic design of x̄ and R charts when the occurrence times of assignable causes follow Weibull distributions with increasing failure rates. The variable quality characteristic is assumed ...
Further monoterpene chromane esters from Peperomia obtusifolia: VCD determination of the absolute configuration of a new diastereomeric mixture
(Pergamon-Elsevier B.V. Ltd, 2012-11-07)
A reinvestigation of the monoterpene chromane ester enriched fraction from Peperomia obtusifolia using chiral chromatography led to the identification of a minor peak, which was elucidated by NMR and HRMS as fenchyl-3,4- ...
Joint conomic design of x̄ and R charts under Weibull shock models
(2000-09-10)
This paper deals with the joint economic design of x̄ and R charts when the occurrence times of assignable causes follow Weibull distributions with increasing failure rates. The variable quality characteristic is assumed ...
Vibrational study of the complexes pentamethylcyclopenta-dienyldicarbonyl rhenium phosphine and phosphite: ( n5-c5me5)re(c0)2(pr3) r= me, ome, oph
(1992)
A comparison of some structural aspects of these complexes with Cp Re(CO)3 are also discussed. Additionally, the preparation and characterization of the trimethyl phosphite derivative is reported. A complete vibrationalassignment ...
Structural study and vibrational assignments of FT-IR and FT-Raman spectra of powerful pesticide 2,4’-DDT. Its comparison with 4,4’-DDT
(Elsevier Science, 2021-03-15)
In this work, the S(+) and R(-) forms of powerful pesticide 2,4’-DDT have been experimentally characterized by using the experimental FT-IR and FT-Raman spectra in the solid phase accomplished with calculations derived ...
Structural and vibrational study of chromyl Fluorosulfate
(Springer, 2013)
Chromyl fluorosulphate was prepared and characterized it by infrared spectroscopy. The Density functional theory (DFT) has been used to study its structure and vibrational properties. The molecular structure of the compound ...
Normal coordinates analysis of the hexamminochromium (III) ion. a simplified m(NX)6 model
(1983)
A normal coordinates analysis for the hexamminochro mium (III) ion, in octahedral symmetry has been underta ken. A simplified M(NX) model has been adopted, since many of the gerade vibrational frequencies are still un ...
Pushing the boundaries of VCD spectroscopy in natural product chemistry
(RSC, 2023-05-11)
Vibrational circular dichroism (VCD) is one of the most powerful techniques to assess the stereochemistry of chiral molecules in solution state. The need for quantum chemical calculations to interpret experimental data, ...
Vibrational and Thermal Properties of Crystalline Topiramate
(Soc Brasileira Quimica, 2014)