Results 41 to 50 of about 40,685 (294)

Trimetallic Chalcogenide Species: Synthesis, Structures, and Bonding

Molecules, 2022
In an attempt to isolate boron-containing tri-niobium polychalcogenide species, we have carried out prolonged thermolysis reactions of [Cp*NbCl4] (Cp* = ɳ5-C5Me5) with four equivalents of Li[BH2E3] (E = Se or S). In the case of the heavier chalcogen (Se),
Sourav Kar, Debipada Chatterjee, Jean-François Halet, Sundargopal Ghosh   +3 more
doaj   +1 more source

Controls on the composition and lability of dissolved organic matter in Siberia's Kolyma River basin [PDF]

, 2012
High-latitude northern rivers export globally significant quantities of dissolved organic carbon (DOC) to the Arctic Ocean. Climate change, and its associated impacts on hydrology and potential mobilization of ancient organic matter from permafrost, is ...
A. Davydova, Alling, Amon, Aufdenkampe, Balcarczyk, Benner, Bertilsson, Boyer, Bro, Brown, Bélanger, Cauwet, Coble, Coble, Coble, Cory, Cory, Cory, Dittmar, E. Bulygina, Fellman, Fellman, Fellman, Finlay, Frey, Geller, Gibson, Gordeev, Guo, Hansell, Helms, Hernes, Hernes, Holmes, Holmes, Hood, Hornberger, Inamdar, Kieber, Kimble, Lafrenière, Laudon, Letscher, Lindsay, Lobbes, McGlynn, McGuire, McKnight, McKnight, Miller, Mopper, Murphy, N. Zimov, Neff, O'Donnell, Opsahl, Opsahl, Opsahl, Osburn, P. J. Mann, Peterson, R. G. M. Spencer, R. M. Holmes, Raymond, S. Davydov, S. Zimov, Sierra, Spencer, Spencer, Spencer, Spencer, Stedmon, Stedmon, Stedmon, Stedmon, Stone, Striegl, Striegl, Stubbins, Tarnocai, Tranvik, Walker, Weishaar, Wu, Zimov   +84 more
core   +1 more source

Noncomparative scaling of aromaticity through electron itinerancy

AIP Advances, 2015
Aromaticity is a multidimensional concept and not a directly observable. These facts have always stood in the way of developing an appropriate theoretical framework for scaling of aromaticity. In the present work, a quantitative account of aromaticity is
Satadal Paul, Tamal Goswami, Anirban Misra   +2 more
doaj   +1 more source

Influence of production variables and starting material on charcoal stable isotopic and molecular characteristics [PDF]

, 2008
We present a systematic study on the effect of starting species, gas composition, temperature, particle size and duration of heating upon the molecular and stable isotope composition of high density (mangrove) and low density (pine) wood.
Alemany, Antal, Antal, Atalla, Baldock, Benner, Beramendi-Orosco, Bird, Blann, C.E. Snape, Cachier, Carcaillet, Chaloner, Clark, Czimczik, Czimczik, D. Apperley, Earl, Eckmeier, Ehrlinger, Ehrlinger, Evans, Fengel, Ferrio, Gavin, Gleixner, Goebel, Hakkou, Hall, Hatcher, Inari, Irbe, Jones, Knicker, Kringstad, Krull, Labbé, Leavitt, Levine, Li, Loader, M.I. Bird, Marino, Martinez, Maunu, McCarroll, Mok, Mörck, Nogueira, Novakov, P. Wormald, P.L. Ascough, Pandey, Pessenda, Poole, Qian, Richard, Robertson, Sima-Ella, Simpson, Sivonen, Sjöström, Skjemstad, Skjemstad, Soares, Steinbeiss, Swift, Turekian, Turney, Verheyden, Völker, Werts, Wikberg, Williams, Wilson, Wormald, Xiao   +76 more
core   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Comparative study of the electron conduction in azulene and naphthalene [PDF]

, 2008
We have studied the feasibility of electron conduction in azulene molecule and compared with that in its isomer naphthalene. We have used non-equilibrium Green's function formalism to measure the current in our systems as a response of the external ...
Dutta, Sudipta, Lakshmi, S., Pati, Swapan K.   +2 more
core   +2 more sources

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Aromaticity and Antiaromaticity: How to Define Them

Chemistry
Aromaticity and antiaromaticity are concepts that are often used to explain and predict the physical and chemical properties of cyclic conjugated compounds.
Marija Baranac-Stojanović
doaj   +1 more source

Inter-cluster reactivity of Metallo-aromatic and anti-aromatic Compounds and Their Applications in Molecular Electronics: A Theoretical Investigation

, 2005
Local reactivity descriptors such as the condensed local softness and Fukui function have been employed to investigate the inter-cluster reactivity of the metallo-aromatic (Al4Li- and Al4Na-) and anti-aromatic (Al4Li4 and Al4Na4) compounds.
Aromaticity, Chako S., Chandra A. K., Chen Z., Curioni A., Curioni A., Datta A., De Proft F., De Proft F., For, Fowler P. W., Fowler P. W., Geerlings P., Haskal E. I., Havenith R. W. A., Hohenberg K., Kido J., Krishnamurty S., Kumar V., Kuznetsov A. E., Kuznetsov A. E., Kuznetsov A. E., Kuznetsov A. E., Kuznetsov A. E., Kuznetsov A. E., Kuznetsov A. E., Li X., Li X., Lowdin P. O., Lowdin P. O., Mendez F., Nembach E., Nguyen L. T., Parr R. G., Parr R. G., Parr R. G., Parr R. G., Parr R. G., Pearson R. G., Pearson R. G., Pearson R. G., Perdew J. P., Ritter S. K., Roy R. K., Schmidt M. W., Shetty S., Shetty S., Tang J. X., Yang W., Yang W., Zhai H. J., Zhai H. J., Zhang Y.   +52 more
core   +1 more source

Supramolecular aromaticity

Journal of Molecular Structure, 2014
We report experimental and theoretical evidences for supramolecular aromaticity as a new concept to be widely used in researches about molecular crystals. CSD survey regarding frequently encountered resonance-assisted H-bonds (RAHBs) in formic acid, formamide, formimidamide, formic acid-formamide, and formamide-formimidamide dimers shows that ...
Karabiyik, Hande, Sevincek, Resul, Karabiyik, Hasan   +2 more
openaire   +3 more sources