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Browsing by Subject "Chemical bonds"

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    • Article  

      1,3-diphenylbenzo[e][1,2,4]triazin-7(1H)-one: Selected chemistry at the C-6, C-7 and C-8 positions 

      Koutentis, Panayiotis Andreas; Krassos, H.; Lo Re, D. (2011)
      1,3-Diphenylbenzo[e][1,2,4]triazin-7(1H)-one (6) reacts with tetracyanoethylene (TCNE) or tetracyanoethylene oxide (TCNEO) to give the deep green 2-[1,3-diphenylbenzo[e][1,2,4]triazin-7(1H)-ylidene]propanedinitrile (11) ...

    • Article  

      Detection of the His-heme Fe2+-NO species in the reduction of NO to N2O by ba3-oxidase from thermus thermophilus 

      Pinakoulaki, Eftychia; Ohta, T.; Soulimane, T.; Kitagawa, T.; Varotsis, Constantinos (2005)
      Reaction pathways in the enzymatic formation and cleavage of the N-N and N-O bonds, respectively, are difficult to verify without the structure of the intermediates, but we now have such information on the heme a3 2+-NO ...

    • Article  

      Effect of halogen substitution on o-Phenylenebiscarbene 

      Nicolaïdes, Andrew N. (2005)
      The effect of halogen (F, Cl and Br) perturbation on the geometries and relative energies of five electronic states (one quintet, two triplets and two singlets) of o-phenylenebiscarbene (1-H) is examined computationally ...

    • Article  

      The effect of sorbed toluene on the surface properties of calcium hydroxide 

      Pashalidis, Ioannis; Theocharis, Charis R. (1998)
      The surface properties of commercial grade calcium hydroxide were studied by nitrogen adsorption isotherm analysis, FTIR spectroscopy (KBr transmission and reflectance) and TGA analysis before and after toluene adsorption. ...

    • Article  

      The effects of P-poisoning of CexZr1-xO2 on the transient oxygen storage and release kinetics 

      Christou, Stavroula Y.; Efstathiou, Angelos M. (2013)
      The present work reports on the investigation of the effects of chemical poisoning of CexZr1-xO2 solids by phosphorous (P) on the kinetics of oxygen storage and release (OSR) of the thus derived P-contaminated solids, as ...

    • Article  

      Fourier transform infrared evidence for a ferric six-coordinate nitrosylheme b3 complex of cytochrome cbb3 oxidase from Pseudomonas stutzeri at ambient temperature 

      Stavrakis, Stavros; Pinakoulaki, Eftychia; Urbani, A.; Varotsis, Constantinos (2002)
      We report the first vibrational study of NO bound to an oxidized heme-copper oxidase. Cytochrome cbb3 oxidase from P. stutzeri reduces both O2 and NO to H2O and N2O, respectively. The ferric nitrosyl complex of cbb3 exhibits ...

    • Article  

      Near-monodisperse α-hydroxy and α,ω-dihydroxy amine-based polymers: Synthesis and characterization 

      Costa, Costas N.; Patrickios, Costas S. (1999)
      α-Hydroxy and α,ω-dihydroxy polymers of 2-(dimethylamino)ethyl methacrylate (DMAEMA) of various molecular weights were synthesized by group transfer polymerization (GTP) in tetrahydrofuran (THF), using 1-methoxy-1-(trime ...

    • Article  

      Reaction of tetracyanoethylene with SCl1 

      Koutentis, Panayiotis Andreas; Rces, C. W. (2000)
      The chloride ion catalysed addition of SCl2 to TCNE gives the 4-dicyanomethylene-l,2,6-thiadiazine 2 (60%) with two minor products (5%) of extensive molecular rearrangement, the pyrimidine 4 and the pyrroloimidazothiadiazine ...

    • Article  

      Singlet hydrocarbon carbenes with high barriers toward isomerization: A computational investigation 

      Nicolaïdes, Andrew N. (2003)
      A prerequisite for a stable singlet hydrocarbon carbene is the existence of high barriers toward isomerization. Four derivatives of cyclopentylidene (1-4) with rigid and varying carbon cages are examined computationally ...

    • Article  

      The structure of the hyponitrite species in a heme Fe-Cu binuclear center 

      Varotsis, Constantinos; Ohta, T.; Kitagawa, T.; Soulimane, T.; Pinakoulaki, Eftychia (2007)
      NO laughing matter: The enzymatic production of laughing gas (N 2O) from two molecules of NO requires the formation of the N-N bond and the subsequent cleavage of the N-OH bond. Resonance Raman spectroscopic studies have ...

    • Article  

      A systematic evaluation of the interplay of weak and strong supramolecular interactions in a series of Co(II) and Zn(II) complexes tuned by ligand modification 

      Kounavi, Konstantina A.; Manos, Manolis J.; Moushi, Eleni E.; Kitos, Alexandros A.; Papatriantafyllopoulou, Constantina; Tasiopoulos, Anastasios J.; Nastopoulos, Vassilios (2012)
      A systematic investigation on a designed series of 21 transition metal complexes has been carried out with the intention to explore and assess the relative strength and the way in which intermolecular interactions, namely, ...

    • Doctoral Thesis  

      Σύνθεση και χαρακτηρισμός καλώς-ορισμένων πολυμερικών πλεγμάτων διασταυρωμένων με δυναμικούς ομοιοπολικούς δεσμούς ακυλοϋδραζόνης 

      Αποστολίδης, Δημήτρης Ε. (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2019-01)
      Η παρούσα Διδακτορική Διατριβή πραγματεύεται το σχηματισμό και το χαρακτηρισμό πέντε κατηγοριών καλώς-ορισμένων δυναμικών ομοιοπολικών πολυμερικών πλεγμάτων (ΔΟΠΠ) διασταυρωμένων με δυναμικούς ομοιοπολικούς δεσμούς ...

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