No 4-5 Avril-Mai 2016
Tome 61, No 4-5 Avril-Mai 2016
1. Balazs HARGITTAI and Istvan HARGITTAI
Alexandru T. Balaban’s symmetry: an appreciation
2. Claude NICOLAU
Alexandru T. Balaban – my Friend of 62 years
3. Tibor BRAUN, András SCHUBERT and Gábor SCHUBERT
On the molecular structure of the co-author network of Alexandru T. Balaban
4. Roald HOFFMANN
A lost letter
5. Professor Alexandru T. Balaban’s 85th anniversary – List of publications
6. Amr A. A. ATTIA, Alexandru LUPAN and R. Bruce KING
Contrasting behavior of the group 15 elements (P, As, Sb, Bi) as heteroatoms in icosahedral cobaltaboranes: effect of phosphorus atom basicity
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Key words: metallaboranes, cobalt, group 15 heteroatoms, density functional theory, DFT.
7. Elena MAFTEI, Catalin V. MAFTEI, M. Heiko FRANZ, Gerhard KELTER, Heinz-Herbert FIEBIG, Matthias TAMM and Ion NEDA
New members of the Cinchona alkaloid family: synthesis, characterisation and antitumor evaluation of novel gold(I) complexes
Key words: Cinchona alkaloids, Quinuclidines, gold(I) complex, anti-tumor activity.
8. Slavko RADENKOVIĆ, Ivan GUTMAN, Sanja RUŽIĆ and Snežana ZDRAVKOVIĆ
Strain in strain-free benzenoid hydrocarbons: the case of chrysene and triphenylene
Key words: energy, benzenoid hydrocarbon, chrysene, triphenylene.
9. Yenni ORTIZ, Debojit BHATACHARYA, Douglas J. KLEIN and Joel F. LIEBMAN
Super-molecules
Key words: super-molecule, super-structure, nano-structures, nano-technology
10. Luminita SILAGHI-DUMITRESCU, Eugenia HARSAN, Julio ZUKERMAN-SCHPECTOR, Edward R.T. TIEKINK and Ionel HAIDUC
An inorganic helix in the supramolecular structure of trimethyltin diphenylarsinate, [Me3Sn(O2AsPh2)]n: A structural comparison of triorganotin arsinates and phosphinates
Key words: trimethyltin, organotin, arsinates, phosphinates, supramolecular, inorganic helix.
11. Emilian GEORGESCU, Alina NICOLESCU, Florentina GEORGESCU, Sergiu SHOVA, Bogdan C. Simionescu and Calin DELEANU
Contributions to syntheses of pyrrolo [1,2-a]benzimidazole derivatives via 1,3-dipolar cycloaddition reactions
Key words: pyrrolo[1,2-a]benzimidazole, ylides, cycloadditions, nitrogen
heterocycles, NMR, X-Ray.
12. Andrei BEJAN, Luminita MARIN, Bogdan CHIRICUTA, Daniela AILINCAI and Bogdan C. SIMIONESCU
A new phenothiazine blue light emitter. Synthesis, structure and photophysical properties
Key words: phenothiazine; blue light emitter; oxidation; carboxylic acid.
13. Maria PRODAN, Maria MITU, Domnina RAZUS and Dumitru OANCEA
Spark ignition and propagation properties of methane-air mixtures from early stages of pressure history
Key words: spark ignition; propagation; methane; normal burning velocity; ignition delay
14. Gianina DOBRESCU and Niculae I. IONESCU
The fractal dimension of oscillations in methanoloxygen system
Key words: fractal analysis, chemical oscillations.
15. Carmen PARASCHIV, Andrei CUCOS, Sergiu SHOVA and Marius ANDRUH
Two Zn(II) distortion isomers in a single crystal. Synthesis, supramolecular interactions and thermal analysis
Key words: zinc(II), distortion isomers, isophthalate ligand, tris(hydroxymethyl)aminomethane, hydrogen bonds.
16. Cristina FLOREA, Cristina STAVARACHE and Horia PETRIDE
1-Cyanoformamidines. Formation during the RuO4- mediated oxidation of secondary amines
Key words: secondary amines, oxidation, ruthenium tetraoxide, formamidines.
17. Mircea V. DIUDEA and Michel PETITJEAN
Chiral multitori as snub derivatives
Key words: multitorus, chirality, ring signature, topological symmetry, atom equivalence class.
18. Petre T. FRANGOPOL, Aurora MOCANU, Valer ALMASAN, Corina GARBO, Reka BALINT, George BORODI, Ioan BRATU, Ossi HOROVITZ and Maria TOMOAIA-COTISEL
Synthesis and structural characterization of strontium substituted hydroxyapatites
Key words: strontium substituted hydroxyapatite, XRD, FTIR, Raman spectra, TEM, AFM
19. Aurica P. CHIRIAC, Loredana E. NITA, Liliana TARTAU, Iordana NEAMTU, Nita TUDORACHI and Alina DIACONU
Using an alternating magnetic field for covering a metallic stent with a new magnetic composite
Key words: magnetic composite deposited on stent, poly(maleic anhydride-co-3, 9-divinyl-2, 4, 8, 10-tetraoxaspiro [5.5] undecane); magnetite encapsulated.
20. Tinca BURUIANA, Marioara NECHIFOR, Violeta MELINTE, Cristina PREJMEREAN and Emil C. BURUIANA
Preparation of poly(acrylic acid-co-itaconic acidco-N-acryloyl-L-alanine) grafted with methacrylate groups for use in dentistry
Key words: alanine/leucine acrylates, photopolymerizable polyalkenoates, dental material properties, morphology.
21. Marioara NECHIFOR, Viorica E. PODAŞCĂ and Emil C. BURUIANĂ
Synthesis and fluorescence properties of some tryptophan-containing polyacrylates
Key words: tryptophan, fluorescence quenching, polyacrylates, copolymerization.
22. Mădălina ZĂNOAGĂ and Fulga TANASĂ
Critical assessment of the thermal and thermooxidative behaviour of some polypropylene-clay composites
Key words: polymer-clay nanocomposites, thermal stability, thermal and thermo-oxidative degradation, exfoliation/intercalation.
23. Oana URSACHE, Constantin GĂINĂ, Viorica GĂINĂ and Cristian Dragos VARGANICI
Thermal properties of thermoresponsive networks based on polyurethanes
Key words: thermoreversible, bismaleimides, thermal properties.
24. Ana-Maria-Corina DUMITRIU, Alexandra BARGAN, Mihaela BALAN, Cristian-Dragos VARGANICI, Sergiu SHOVA and Maria CAZACU
Synthesis and characterization of octakis(3-chloroammoniumpropyl) octasilsesquioxane
Key words: cubic polyhedral silsesquioxanes; nanosized structures; synthesis; structural characterization; functionalized silica cage.
25. Loredana VACAREANU and Mircea GRIGORAS
Spectroelectrochemical properties of linear and star-shaped triphenylamine oligovinylenes
Key words: oligoarylenevinylenes, linear and star-shaped oligomers, triphenylamine group, electrochemical polymerization, electrochromic properties.
26. Magdalena AFLORI
Embedding silver nanoparticles at PHB surfaces by means of combined plasma and chemical treatments
Key words: polyhydroxybutyrate, helium plasma, silver nitrate, antimicrobial.
27. Luiza Madalina GRADINARU, Constantin CIOBANU, Stelian VLAD and Maria BERCEA
Rheological investigation of thermoreversible polyurethane hydrogels
Key words: polyurethane, thermoreversible hydrogel, viscoelastic properties, elastic recovery.
28. Ion SAVA, Gabriela LISA, Elena SAVA and Nicolae HURDUC
Synthesis and characterization of some azocopolyimides
Key words: two side azobenzene units, azo-copolyimides, photochromic behavior.
29 Claudia COBZARU, Adriana MARINOIU, Gabriela Antoaneta APOSTOLESCU, Ramona Elena TATARU-FARMUS, Nicolae APOSTOLESCU and Corina CERNATESCU
Behaviour of pretreated clinoptilolite volcanic tuff used in ion exchange process with Ca2+, Ni2+ and NH4 + ions described by a numerical study
Key words: clinoptilolite, ion exchange process, pre-treatment procedure.
30. Adriana MARINOIU, Claudia COBZARU, Elena CARCADEA, Mircea RACEANU, Irina ATKINSON, Mihai VARLAM and Ioan STEFANESCU
An experimental approach for finding low cost alternative support material in PEM fuel cells
Key words: fuel cells, graphene nanocomposites, chemical oxidation.
31. Gheorghiţă ZBANCIOC, Costel MOLDOVEANU, Ana Maria ZBANCIOC, Ionel HUMELNICU and Ionel I. MANGALAGIU
New insights concerning microwave mechanism in cycloaddition reactions: thermal heating versus specific effects of microwave
Key words: microwave mechanism, thermal versus specifically microwave effects, Huisgen [3+2] dipolar cycloadditions, nitrogen liquid cooling, pyridazinium ylides.
32. Mihai MEDELEANU, Tudor OLARIU, Doina GEORGESCU, Eugen ȘIȘU, Maria MRACEC and Mircea MRACEC
Conformational analysis and formation enthalpy of (3R,5S,6R)-6-acetylamidopenicillanic acid calculated by the PM3, PM6 and PM7 semiempirical MO methods
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Key words: (3R,5S,6R)-6-acetylamidopenicillanic acid, conformational analysis, formation enthalpy, semiempirical MO methods: PM3, PM6, PM7.