Charge transfer
Spectrophotometric determination of repaglinide in tablets based on charge-transfer complexation reaction with chloranilic acid and dichloro-dicyano benzoquinone
... To establish optimum concentrations of the rea- gents for the rapid formation of the stable charge- transfer complexes, RPG was allowed to react with different volumes of the reagents (0.5-3.0 ml of 0.2% ...
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Spectrophotometric determination of cephalexin in pharmaceutical formulations exploring its charge transfer reaction with quinalizarin.
... SPECTROPHOTOMETRIC DETERMINATION OF CEPHALEXIN IN PHARMACEUTICAL FORMULATIONS EXPLORING ITS CHARGE TRANSFER REACTION WITH QUINALIZARIN. This work proposes a new simple and fast spectrophotometric method for ...
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Spectrophotometric determination of quetiapine fumarate in pharmaceuticals and human urine by two charge-transfer complexation reactions
... Two simple, sensitive, extraction-free, rapid and cost-effective spectrophotometric methods based on charge transfer complex formation reactions were developed and validated for the determination of QTF. ...
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Relationship between charge transfer and intermolecular interactions in heterocyclic hydrogen-bonded complexes.
... BETWEEN CHARGE TRANSFER AND INTERMOLECULAR INTERACTIONS IN HETEROCYCLIC HYDROGEN-BONDED ...density charge transfer from the proton acceptor to the proton ...density charge ...
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Utilization of Charge Transfer and Kinetic Methods for the Determination of Doripenem
... the Charge Transfer (ECT) relies on the Ionisation Potential (IP) of the donor and the electron affinity of the acceptor (EA); thus, the λ max values of other p-donors differ from those of the examined ...
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Coordinate-space Faddeev-Hahn-type approach to three-body charge-transfer reactions involving exotic particles
... Although there are some experimental measurements and several theoretical investigations of these processes, there still remain discrepancies among various studies. Here we use a different theoretical approach based on a ...
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Repositório Institucional UFC: Crystalline structure of the marketed form of Rifampicin: a case of conformational and charge transfer polymorphism
... The crystalline structure of the polymorph II of rifampicin was successfully elucidated, observing two molecules of RIF with different conformations in the unit cell. Differently to the previ- ously reported structures, ...
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Braz. J. Pharm. Sci. vol.53 número3
... The best analytical signal was attained with the use of DMSO. This is probably due the fact that this solvent has the highest dielectric constant among the tested solvents (The Merck Index, 2006), which provides the best ...
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J. Braz. Chem. Soc. vol.16 número3A
... Little charge transfer is found for the interaction with the Au(111) ...small charge transfer from the ammonia molecule to the metal ...the charge and this could be important for the ...
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J. Braz. Chem. Soc. vol.21 número6
... a charge transfer complex, which results in an electron transfer, followed by a fast proton transfer, ultimately leading to the formation of the corresponding radical pair (Scheme ...electron ...
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J. Braz. Chem. Soc. vol.24 número8
... the charge-transfer resistance, and the straight line is namely Warburg ...the charge-transfer resistance increases firstly and then ...
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J. Braz. Chem. Soc. vol.11 número1
... the charge transfer resistance is high and can control the impedance ...the charge transfer between the metal and the electrolyte is ...
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Mechanisms of optical limiting in a COANP solution doped with fullerenes C70: Applicability for the optoelectronics devices
... intermolecular charge transfer complex with large cross section absorption can be formed in π-conjugated organic system containing C 70 due to the large electron afinity energy of fullerene ...
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J. Braz. Chem. Soc. vol.16 número4
... the charge transfer from electron lone-pair of the nitrogen atom to the σ* the antibonding orbital localized on the C-C chemical bond, which is responsible for the elongation in the C-C ...
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Polímeros vol.23 número2
... of charge transfer complexes with ...the charge transfer complexes derived from copolymer with lowest porosity degree and with highest swelling capacity in water (C30Hep) produced the most ...
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J. Braz. Chem. Soc. vol.9 número5
... a charge transfer process is near the avoided crossing; although Gargaud et ...the charge transfer process than that reported by Gargaud and collaborators 22 , although they have good ...
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J. Braz. Chem. Soc. vol.13 número5
... intervalence- transfer band, responsible for its red color, can be found at 500 ...a charge-transfer transition centered on the Cu(I) ...to charge-transfer transitions in the [Cu ...
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A method to resolve the phase state of aerosol particles
... The reported method decouples any change in the charge transfer properties of the particles from the measurement signal, so the e ff ect of particle phase changes on bounce alone can be [r] ...
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Braz. J. Pharm. Sci. vol.50 número4
... on charge-transfer (CT) complexation reaction involving ALB as n-donor and iodine as σ-acceptor (method A) in dichloromethane or picric acid (PA) as π-acceptor (method B) in ...
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Cerâmica vol.63 número365
... An in situ one step synthesis route based on the polymeric precursor method was used to produce dual phase CuO-samaria doped ceria (SDC) nanocomposite powders. This chemical route allowed to obtain composite powders with ...
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