No 6, Juin 2007

Tome 52, No 6, Juin 2007

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1. Mariana ALBULESCU and Marinela POPOVICI

Isoflavones – biochemistry, pharmacology and therapeutic use

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Key words: isoflavone, phytoestrogens, daidzein, genistein, equol

2. Laura ORIAN

A DFT investigation of the structural and electronic properties of Co(I) and Rh(I) half-sandwich complexes with heteroaromatic π ligands

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Key words: DFT calculations, cobalt, rhodium, heteroaromatic π ligands, alkyne cyclotrimerization

3. George BRĂTULESCU

Préparation des hydrazonates à partir des orthoesters et phénylhydrazine
Preparation of hydrazonates from orthoesters and phenylhydrazine

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Key words: hydrazonates, alumine, micro-ondes, spectres IR

4. Adina Magdalena MUSUC, Crisan POPESCU, Domnina RAZUS and Dumitru OANCEA

Non-isothermal kinetic analysis of thermal decomposition of 2,4-dinitrophenylhydrazine

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Key words: thermal decomposition; 2, 4 – dinitrophenylhydrazine; non -isothermal kinetic analysis; multi – step reaction

5. Adriana PĂTRU, Ion BIBICU, Mihaela FLOROIU, Mircea PREDA and Bogdan TUTUNARU

A study on the inhibition of carbon steel corrosion in an 1M HCl solution by using ammonium polymolibdate (APM)

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Key words: carbon steel, corrosion, inhibition, Mössbauer spectrometry, ammonium polymolibdate

6. Dan DRAGU and Mihai BUDA

Basic discretisation techniques used in cyclic voltammetry numerical simulations. Comparisons and practical aspects

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Key words: digital simulation, cyclic voltammetry, discretisation

7. Viorel BRÂNZOI, Alina PRUNĂ and Florina BRÂNZOI

The effect of some organic surfactans on the corrosion of zinc in neutral and alkaline aqueous solutions

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Key words: hydrogen overvoltage, surfactants, inhibitive action, corrosion process, dissolution kinetics

8. Doina DRĂGAN, Simona CUCU-MAN, Raluca MOCANU and Adrian COVACI

Accelerated solvent extraction method for the determination of polychlorinated biphenyls and organochlorine pesticides in soil

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Key words: accelerated solvent extraction, organochlorine pesticides, polychlorinated biphenyls, soil

9. Florentin TACHE and Monica ALBU

Specificity of an analytical HPLC assay method of metformin hydrochloride

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Key words: specificity, selectivity, Metformin, photolysis, photolytichydrolysis, acidic/alkaline hydrolysis, oxidation, thermal degradation

10. J. KARTHIKEYAN, P. PARAMESHWARA, A. NITYANANDA SHETTY and Prakash SHETTY

Thioacetamide as a releasing agent for the complexometric determination of thallium(III) in its synthetic alloys and complexes

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Key words: EDTA, thallium determination, thioacetamide, complexometric method

Nos 1-2, Janvier-Février 2007

Tome 52, Nos 1-2, Janvier-Février 2007

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Professor Ionel Haiduc

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Publications list

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1. Petronela Maria PETRAR, Gabriela NEMES, Luminita SILAGHI-DUMITRESCU, Ioan SILAGHI-DUMITRESCU, Jean ESCUDIÉ, Heinz GORNITZKA and Henri RANAIVONJATOVO

Synthesis and characterization of the first arsanylbis(methylene)phosphosrane (Me3Si)2C=P(Mes*)=C(Cl)-As(F)Mes*

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Key words: arsanylbis(methylene)phosphorane, heterocumulenes, heteroallenes

2. Mihai NEMA, Mihaela JÖNSSON, Richard A. VARGA, Anca SILVESTRU and Cristian SILVESTRU

Bismuth(III) complexes of tetraorganodichalcogenoimidodiphosphinic acids. Crystal and molecular structure of Bi[(SPMe2)(SPPh2)N]3 and Bi[(OPPh2)2N2][(OPPh2)(SPPh2)N]

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Key words: arsanylbis(methylene)phosphorane, heterocumulenes, heteroallenes

3. Anamaria TEREC, Elena BOGDAN, Luminiţa DAVID, Sorin MAGER and Ion GROSU

Synthesis and stereochemistry of some new bis(1,3-dioxane-2-yl)alkanes

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Key words: conformational analysis, NMR, 1,3-dioxanes, X-ray structure

4. Carmen Ioana LADIU, José R. GARCÍA, Ionel Catalin POPESCU and Lo GORTON

NADH electrocatalytic oxidation at glassy carbon paste electrodes modified with Meldola Blue adsorbed on acidic α-zirconium phosphate

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Key words: NADH oxidation, modified glassy carbon paste electrodes, electrocatalysis, α-titanium phosphate, redox dyes

5. Monica VENTER, Vasile N. BERCEAN, Maria ILICI and Simona CÎNTĂ PÎNZARU

New metal complexes of monoanionic (5-mercapto-1,3,4-thiadiazol-2-yl)thioacetic acid.
X-ray structure of [Na(C2N2HS3CH2COO)H2O)4]2·2H2O

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Key words: thiadiazole, sodium salt, X-ray structure, FT-IR, Raman

6. Codruţa VARODI, Delia GLIGOR and Liana M. MUREŞAN

Carbon paste electrodes modified with Methylene Blue immobilized on a synthetic zeolite

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Key words: Methylene Blue, zeolites, carbon paste electrodes, hydrogen peroxide

7. Valentina CHIOSA and Victor Em. SAHINI

Optical rotatory dispersion of some human serum albumin conformers

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Key words: human serum albumin, optical rotatory dispertion, alfa-helix content

8. Andrei JITIANU, Alina BRITCHI, Virgil BADESCU, Călin DELEANU and Maria ZAHARESCU

Influence of the alkoxy group of the Si-alkoxides on the sol-gel process and on the structure of the obtained gels

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Key words: sol-gel, hybrid materials, GS-MS, 29Si-NMR, IR spectroscopy, SEM microscopy

9. Carmen PARASCHIV, Sylvie FERLAY, Mir Wais HOSSEINI, Nathalie KYRISTSAKAS, Jean-Marc
PLANEX and Marius ANDRUH

Hybrid organic/inorganic H-banded supramolecular networks including [Cr(ox)2L]¯ .
(L=1,10-phenanthroline and 2,2-bypiridine)tectons

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Key words: chromium complexes, hydrogen bond interaction, oxalate complexes, supramolecular chemistry

10. Geta DAVID, Bogdan C. SIMIONESCU and Cristofor I. SIMIONESCU

Functional micro- and nanoparticle – a possible tool for nanostructured materials

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Key words: micro- and nanoparticles, functional polymers, macromonomers, poly[(N-acylimino)ethylene], polymer supported catalysts, nanostructured materials

11. Cristina PRISACARIU and Elena SCORTANU

Study of the compression properties of polyurethanes based on dibenzyl monomers and 1,4-butanediol as compared to other diol chain extenders

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Key words: 4,4’-dibenzyl diisocyanate, polyurethanes, compression, residual elongation, Young modulus

12. Carmen RACLES, Anton AIRINEI, Aurelia IOANID, Cristian GRIGORAS and Maria CAZACU

Siloxane-azoaromatic polyesters as potential complex dye systems

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Key words: azo-polymers, siloxane, polymer blends

13. Ion SAVA and Elena HAMCIUC

Silicon-containing aromatic poly(amide-imide)s

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Key words: silicon, polyamide-imides, solubility, thin film, conformational parameters

14. Gabrielle Charlotte CHIŢANU, Irina POPESCU and Adrian CARPOV

Synthesis and characterization of maleic anhydride copolymers and their derivatives. 3 Synthesis and characterization of maleic anhydride-methyl methacrylate copolymers

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Key words: maleic anhydride copolymers; maleic anhydride-methyl methacrylate copolymer; copolymer characterization

15. Aurica FARCAŞ, Mariana PINTEALA and Valeria HARABAGIU

Self-assembly of functional polymers. A viscometric study

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Key words: reversible self-assembly, functional polymers, crown etherammonium salt interaction

16. Simona MORARIU and Maria BERCEA

Influence of poly(ethylene oxide)on the aggregation and gelation of laponite dispersions in water

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Key words: Laponite RD, poly(ethylene oxide), gel, viscoelastic properties

17. Ruxanda BODÎRLĂU, Carmen-Alice TEACĂ and Iuliana SPIRIDON

Thermal investigation upon various composite materials

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Key words: wood-plastic composite, FT-IR spectra, thermal analysis, weight loss

18. Ana Maria TOADER and Elena VOLANSCHI

Electrochemical and spectral study of the heminsurfactant interaction in solution

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Key words: Hemin, anionic surfactants, cyclic voltammetry, UV-VIS absorption spectroscopy

19. Viorel BRÂNZOI, Florina BRÂNZOI and Luisa PILAN

Electrochemical characterization of polypyrrole modified electrodes doped with large organic anions

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Key words: polypyrrole film, platinum electrode cyclic voltammetry, electrochemical impedance spectroscopy

20. Mariana Viorica BOGĂŢIAN, Andreea Cristina CORBU, Călin DELEANU, Maria MAGANU and Gheorghe BOGĂŢIAN

Pyrilium salts with long alkyl substituents having a terminal free amino group. Corrosion inhibitors derived from corresponding pyridinium salts

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Key words: pyridinium salts, corrosion inhibitors for steel in acidic water

21. Alexandru C. RAZUS, Liviu BIRZAN, Victorita TECUCEANU, Mihaela CRISTEA, Alina NICOLESCU and Cristian ENACHE

Azulene derivatives soluble in polar solvents. 1- (azulen-1-yl)-2-(thien-2- or 3-yl)-ethenes

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Key words: azulene, thiophene, ethenes, carboxylic acids

22. Maria MRACEC, Ramona RAD, Liliana OSTOPOVICI, Ana BOROTA and Mircea MRACEC

Conformational analysis with semiempirical methods for a quinoxaline urea derivative, active on benzodiazepine receptor

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Key words: GABA benzodiazepine receptor, conformational analysis, quinoxaline, AMBER94, AM1

23. Maria MRACEC, Ana BOROTA, Ramona RAD, Liliana OSTOPOVICI and Mircea MRACEC

Conformational analysis for a series of imidazole ligands acting as antagonists on the histamine H3 receptor

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Key words: flexible ligand, conformational analysis, H3 receptor antagonist, AM1, MM+

24. Zeno GARBAN, Gabriela GARBAN, Ariana-Bianca VELCIOV and George-Daniel GHIBU

Interaction of deoxyribonucleic acid with cis-platinum: structure-activity relantionship

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Key words: cis-platinum – DNA interaction, effects

No 4, Avril 2006

Tome 51, No 4, Avril 2006

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1. Professor Alexandru T. Balaban’s 75th anniversary

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1.-bis Addendum to Professor Balaban’s List of Publications

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2. Horia PETRIDE, Oana COSTAN, Cristina FLOREA and Silvia UDREA

Competitive amide hydrolysis in mono- and diformylated ethylenediamines

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Key words: amides, hydrolysis

3. Florea DUMITRAŞCU, Constantin DRĂGHICI, Daniela VULUGA and Miron Teodor CĂPROIU

New pyrazoles by 1,3-dipolar cycloaddition reactions between sydnones and activated alkynes

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Key words: sydnones, pyrazoles, 1,3-dipolar cycloaddition, regioselectivity, NMR spectroscopy

4. Rodica Daniela BĂRĂŢOIU, Anca Elena BARBU, Lucia MUTIHAC, Miron Teodor CĂPROIU, Constantin DRĂGHICI, Radu SOCOTEANU and Titus CONSTANTINESCU

4-(3-(phtalhydrazide)azo)N-phenylaza-15-crown-5. Synthesis and properties

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Key words: luminol, N-phenylaza-15-crown-5, luminol derivative, 1H- and 13CNMR spectra at different temperatures, VIS spectra, pKa

5. Constantin I. CHIRIAC, Fulga TANASĂ and Marioara ONCIU

A new direct synthesis of aromatic amides in the presence of triethyl phosphite and 4- dimethylaminopyridine

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Key words: direct condensation; new activating system; TEP-4-DMAP; aromatic amides

6. Mariana Viorica BOGĂŢIAN, Demetra SIMION (NUŢĂ), Andreea Cristina CORBU, Călin DELEANU, Filip CHIRALEU, Maria MAGANU and Gheorghe BOGĂŢIAN

Synthesis membranes derived from pyridinium salts with long alkyl substituents having a terminal free amino group

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Key words: pyridinium salts, artificial membranes, CMC, DLS

7. Gianina DOBRESCU, Niculae I. IONESCU and Monica CĂLDĂRARU

The fractal dimension of oscillations in SnO2/humid O2 system

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Key words: fractal dimension, oscillations, SnO2

8. Maria MRACEC, Laura JUCHEL and Mircea MRACEC

QSAR analysis of a series of imidazole derivatives acting on the H3 receptor

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Key words: QSAR, MLR, MTD, histamine H3 receptor, imidazolic derivatives

9. Niculae ENE and Maria Ileana IONITA

Electrochemical behaviour of dimethyl ether in alkaline solutions at 298 K

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Key words: dimethyl ether, fuel cell, electrochemistry, voltammetry, electrochemical kinetics

10. Marieta BALCAN, Dan F. ANGHEL, Dan DONESCU and Anca-Nicoleta GĂLĂŢANU

Effect of the mobile phase composition on the retention behavior of polydisperse ethoxylated nonylphenols in reversed-phase high performance liquid chromatography

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Key words: nonionic surfactants, poly(ethylene oxide), RP-HPLC, retention behavior, mobile phase composition

11. Ana Maria TOADER, Daniela BULCU and Elena VOLANSCHI

Spectroelectrochemical study of the redox behaviour of questiomycin drugs in aprotic media

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Key words: 2-aminophenoxazin-3-one, 2-aminophenol, cyclic voltammetry, spectroelectrochemistry, MO calculations

12. Maria MRACEC, Laura JUCHEL and Mircea MRACEC

QSAR analysis of a series of imidazole derivatives acting on the H3 receptor

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Key words: QSAR, MLR, MTD, histamine H3 receptor, imidazolic derivatives

13. Niculae ENE and Maria Ileana IONITA

Electrochemical behaviour of dimethyl ether in alkaline solutions at 298 K

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Key words: dimethyl ether, fuel cell, electrochemistry, voltammetry, electrochemical kinetics

14. Marieta BALCAN, Dan F. ANGHEL, Dan DONESCU and Anca-Nicoleta GĂLĂŢANU

Effect of the mobile phase composition on the retention behavior of polydisperse ethoxylated nonylphenols in reversed-phase high performanceliquid chromatography

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Key words: nonionic surfactants, poly(ethylene oxide), RP-HPLC, retention behavior, mobile phase composition

15. Ana Maria TOADER, Daniela BULCU and Elena VOLANSCHI

Spectroelectrochemical study of the redox behaviour of questiomycin drugs in aprotic media

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Key words: 2-aminophenoxazin-3-one, 2-aminophenol, cyclic voltammetry, spectroelectrochemistry, MO calculations