نتایج جستجو برای: tcne

تعداد نتایج: 120  

2015
Mukesh C. Patel Bhavin N. Patel Pranav S. Shrivastav

ABSTRACT A selective ,sensitive ,accurate UV-Visible spectrophotometric methods have been developed for the estimation of drugs viz.,Diflunisal (DFL),Febuxostat(FBT),Metaxalone(MTX),Fexofenadine methyl ester(FME) and Linezolid(LZD) in bulk and their pharmaceutical dosage forms using Tetracyanoethylene (TCNE) as analytical reagent. These method are based on the formation of charge transfer compl...

Journal: :iranian journal of pharmaceutical research 0
gehad genidy mohamed chemistry department, faculty of science, cairo university mahmoud sabry rizk chemistry department, faculty of science, cairo university eman y.z. frag chemistry department, faculty of science, cairo university

the purpose of this investigation was directed to propose sensitive, accurate and reproducible methods of analysis that can be applied to determine distigmine bromide (dtb), cyclopentolate hydrochloride (cphc), diaveridine hydrochloride (dvhc) and tetrahydrozoline hydrochloride (thhc) drugs in pure form and pharmaceutical preparations via charge-transfer complex formation with 7,7,8,8-tetracyan...

The purpose of this investigation was directed to propose sensitive, accurate and reproducible methods of analysis that can be applied to determine distigmine bromide (DTB), cyclopentolate hydrochloride (CPHC), diaveridine hydrochloride (DVHC) and tetrahydrozoline hydrochloride (THHC) drugs in pure form and pharmaceutical preparations via charge-transfer complex formation with 7,7,8,8-tetracyan...

Journal: :Journal of Physical Chemistry C 2021

We report on micro-focused Raman spectroscopy of encapsulated vanadium tetracyanoethylene (V[TCNE]x, x ≈ 2) films as they age under ambient conditions to understand the structural changes that accompany aging and how those influence magnetic properties. V[TCNE]x is an organic-based ferrimagnet with a high ordering temperature TC > 600 K, low damping, growth compatibility wide variety substrates...

Journal: :Physical chemistry chemical physics : PCCP 2014
Giovanni Piacente Andrea Amadei Marco D'Abramo Isabella Daidone Massimiliano Aschi

In this study we propose a theoretical-computational method, essentially based on molecular dynamics simulations and quantum-chemical calculations, for modelling the photo-induced charge separation (CS) and the subsequent charge recombination (CR) processes in solution. In particular we have reproduced the low-energy UV-Vis spectra of systems composed by an aromatic species (Ar = benzene or ind...

2014
Masahiko Shibahara Motonori Watanabe Kenta Goto Teruo Shinmyozu

The title complex C42H48·2C6N4 {systematic name: hepta-cyclo[21.13.1.1(5,19).1(6,18).1(10,14).1(24,36).1(28,32)]do-tetra-conta-1(37),5(40),6(41),10(42),11,13,18,23,28,30,32(39),36(38)-dodeca-ene-ethene-tetra-carbo-nitrile (1/2)}, consisting of four-layered [3.3]meta-cyclo-phane (MCP) with two tetra-cyano-ethyl-ene (TCNE) mol-ecules, was grown from a mixture of MCP and TCNE in chloro-form soluti...

Dariush Mohajer Elham Eslami Mojtaba Shamsipur,

Formation of the molecular complexes between meso-tetraphenylporphyrin (TPP) and the p-acceptors 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ) and tetracyanothylene (TCNE) in chloroform solution was investigated spectrophotometrically. The formation constants of the resulting 1:1 molecular complexes were determined using the Benesi-Hildebrand and Nash methods. The TPP-DDQ pro...

Journal: :Chemistry 2014
Marie Betou Nicolas Kerisit Esme Meledje Yann R Leroux Claudine Katan Jean-François Halet Jean-Claude Guillemin Yann Trolez

A high-yielding sequence of [2+2] cycloaddition-retroelectrocyclization of ynamides with tetracyanoethylene (TCNE) is described. The reaction provided tetracyanobutadiene (TCBD) species, which were characterized by various techniques. DFT and TD-DFT calculations were also performed to complement experimental findings.

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