Nos 8-9, Août-Septembre 2007

Tome 52, Nos 8-9,  Août-Septembre 2007

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Professor Victor-Emanuel Sahini

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1. Adina RĂDUCAN, Dumitru OANCEA and Eugen SEGAL

Models for irreversible inactivation in the enzymatic decomposition of hydrogen peroxide and their kinetic treatment by means of graphs

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Key words: catalase inactivation, kinetic modelling, graph theory

2. Mihaela PUIU, Valentin MUNTEAN and Dumitru OANCEA

Modeling kinetic limitations of acetylene detonation

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Key words: acetylene detonation, Chapman-Jouguet model, ZND model

3. Mirela ENACHE, Daniela BULCU, Iuliana ŞERBĂNESCU and Elena VOLANSCHI

Interaction of actinomycin D with anionic surfactant, sodium dodecyl sulphate: spectral and electrochemical investigations

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Key words: anticancer drugs, actinomycin D, surfactant, spectral and electrochemical methods

4. Aurica VÂRLAN, Sorana IONESCU, Soong-Hyuck SUH and Mihaela HILLEBRAND

Modelling of the electrochemical reduction behaviour of some dibenz[b,e]-thiepinosulphones by the DFT method

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Key words: thiepinonsulphones, reduction behaviour, DFT

5. Valentina CHIOSA, Mihaela MANEA, Ioana STĂNCULESCU and Cristina MANDRAVEL

IR spectral study on nature of 2-pyridine aldoxime methyl chloride interaction with some sterols. II. Cholestanol

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Key words: FTIR spectral study, 2-pyridine aldoxime methyl chloride, cholinesterase reactivator, cholestanol, hydrogen bonded complex

6. Minodora LECA, Lelian CIOROIANU, Gabriela CIOROIANU, Gabriela DAMIAN, Cătălina COSTEA and Ana Maria MATEI

Aqueous ecological intumescent fire retardant coatings for multifunctional applications. 1. Preparation and characterization

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Key words: intumescent fire retardant coatings, passive fire protection, expanding indices, char aspect, rheological behaviour

7. Ruxandra GHEORGHE, Jean-Pierre COSTES, Sergiu SHOVA and Marius ANDRUH

Unexpected replacement of Gd(III) and Hg(II) from an oxygen binding set leading to a heterometallic Cu(II)-Hg(II) 1-D coordination polymer

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Key words: mixed metal Gd(III)/Hg(II) complexes; coordination polymers; thiocyanato bridges

8. Josette WEINBERG, Dan A. LERNER and Constantin BĂLĂCEANU-STOLNICI

Theoretical study of DHEAS: the electronic properties of a complex between DHEAS and serotonin by comparative calculations HF and DFT

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Key words: DHEAS, Serotonin, Ab initio, DFT, NBO

9. Niculae I. IONESCU, Monica CĂLDĂRARU, Cristian HORNOIU and Cornel MUNTEANU

Overall activation energy of methanol oxidation in oscillatory regime

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Key words: Oscillations activation energy, methanol oxidation

10. Marieta BALCAN, Dan F. ANGHEL, Dan Donescu and Valerică RAICU

The retention behavior of ethoxylated nonionic surfactants in reversed-phase high performance liquid chromatographic systems

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Key words: nonionic ethoxylated surfactants, reversed-phase liquid chromatography, hydro-organic mobile phase, molar refraction, dielectric constant

11. Dan F. ANGHEL, Doina M. MIHAI, Gabriela STÎNGĂ, Alina IOVESCU, Adriana BĂRAN and Regine Von KLITZING

A study upon interaction of dodecylpyridinium chloride with sodium dextran sulfate

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Key words: cationic surfactant, surfactant-polymer interaction, solid-state surfactant-selective electrode

12. Paul Gabriel ANOAICA, Emilia AMZOI and Costinel I. LEPĂDATU

The hierarchy of the molecular descriptors and the ligand-receptor interaction

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Key words: QSAR, electronegativity, hardness, OMO – UMO quantum states, fingerprint descriptors, CADD

13. Viorel CHIHAIA, Godehard SUTMANN, Chang-Sup LEE and Soong-Hyuck SUH

Divergence-free description for molecular rotation in Cartesian coordinates: the axis-rotation formula and some its applications to computational chemistry

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Key words: axis-rotation formula; rigid-body system; axis-rotation operator; symmetry operator

14. Gabriela NEMEŞ, Luminiţa SILAGHI-DUMITRSCU, Ioan SILAGHI-DUMITRESCU, Jean
ESCUDIE, Henri RANAIVONJATOVO and Julio ZUKERMAN-SCHPECTOR

Silatropic migration in (1-trimethylsilylindenyl)(indenyl) dimethylsilane, bis(1-trimethyl-silylindenyl)dimethylsilane and related compounds

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Key words: bis(indenyl)silane, silatropic migration, molecular structure, B3LYP/6-31G(d) DFT calculations, AM1 semiempirical calculations

15. Dan RUSU, Cora CRĂCIUN, Mariana RUSU, Adrian PĂTRUŢ and Leontin DAVID

Complexes of the trilacunary Keggin arseno(V)polyoxotungstate with iron(III), cobalt(II) and nickel(II)

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Key words: polyoxometalate, metal cluster, FT-IR spectroscopy, EPR spectroscopy, paramagnetism

16. Ossi HOROVITZ, Delia GLIGOR and Ionel Cătălin POPESCU

Correlations between electrochemical activity of phenothiazine derivatives modified graphite electrodes and some structural and molecular characteristics

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Key words: phenothiazine derivatives, modified electrodes, MO calculations

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

QSAR analysis of a series of non-imidazolic derivatives acting on the histamine H3 receptor

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Key words: QSAR, MLR, AM1, H3 histamine receptor, disubstituted pyrrolidinic derivatives

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

Conformational analysis with AMBER and AM1 methods of a partial agonist, (R)-2-[(4-phenylbutylamino)-
methyl]-chroman-7-ol active on the dopaminic D2 receptor

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Key words: conformational analysis, D2 receptor, AM1 rotation barrier

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

QSAR study for a series of imidazo[1,5-a]-quinoxaline and pyrazolo[1,5-c]quinazoline derivatives acting on GABAA/benzodiazepine receptor

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Key words: GABAA/benzodiazepine receptor, quinoxaline and quinazoline derivatives, MTD, MLR

20. Ramona RAD, Maria MRACEC, Mircea MRACEC and Tudor OPREA

The privilege structures hypothesis for G proteincoupled receptors – some preliminary results

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Key words: cheminformatics, drug design, database, GPCR, privileged structures

21. Mihaela SCHULTZ, Maria MRACEC, Eugen SISU and Mircea MRACEC

AM1 conformational analysis of the (3S,5R,6R)-6-acetylamidodopenicillanic acid

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Key words: (3S,5R,6R)-6-acetylamidopenicillanic acid, conformational analysis, steric and electronic properties, AM1

22. Cristian NEANU, Anca LASCU and Carol CSUNDERLIK

Synthesis of benzylidene acetals of N-acetyl-Nmethyl glucamine

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Key words: aminoalditols, pseudoceramides, flash chromatography, glucosamine

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

Synthesis of polymer supported–transition metal catalysts for olefin epoxidation

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Key words: metal-polymer, polymer supported manganese catalyst, moleculary imprinting polymers

24. Constantin I. CHIRIAC, Marioara NECHIFOR and Fulga TANASĂ

Formamide, a novel challenging reagent for the direct synthesis of non-N-substituted cyclic imides

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Key words: formamide, direct synthesis, cyclic imides

25. Aurica FARCAŞ and Valeria HARABAGIU

Synthesis and characterization of a new conjugated polyazomethine

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Key words: Schiff base, rotaxane architecture, supramolecular chemistry, β-cyclodextrin

26. Camelia HULUBEI, Elena HAMCIUC and Maria BRUMĂ

New imide type polymers based on Epiclon

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Key words: alicyclic dianhydride, epiclon, thermostable polymers, solubility

27. Mariana Viorica BOGĂŢIAN, Mircea VÎNĂTORU, Gheorghe BOGĂŢIAN, Demetra NUŢĂ, Filip CHIRALEU, Valentin CÂMPEANU and Călin DELEANU

Pyrylium salts with long alkyl substituents and derived pyridinium salts having a terminal free amino group

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Key words: pyrylium perchlorates, pyridinium salts, CMC

28. Valerian DRĂGUŢAN and Francis VERPOORT

Immobilized ruthenium complexes bearing N,O-bidentate ligands

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Key words: N,O-bidentate ligands, immobilized Ru complexes, Schiff-base, ring-closing metathesis, Kharasch addition, enol-ester, atom transfer radical polymerization

29. Violeta PURCAR, Dan DONESCU, Marius GHIUREA, Cristina Lavinia NISTOR and Cristian PETCU

Silver nanodispersions in organic-inorganic filmogene hybrids

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Key words: sol-gel process, cationic dyes, colloidal silver, hybrid materials, nanoparticles

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