Results 21 to 30 of about 50,397 (308)
Amphiphilic Oxo-Bridged Ruthenium “Green Dimer” for Water Oxidation
iScience, 2020 Summary: In 1982, an oxo-bridged dinuclear ruthenium(III) complex, known as “blue dimer,” was discovered to be active for water oxidation. In this work, a new amphiphilic ruthenium “green dimer” 2, obtained from an amphiphilic mononuclear Ru(bda) (N-OTEG)
Qing-Qing Yang +5 more
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Analysis of Students’ Chemical Bonding Misconception with A Four-Tier Diagnostic Test
JTK (Jurnal Tadris Kimiya), 2022 Students had difficulty understanding the chemical bonding concept because of its complex and abstract nature. This difficulty could lead to chemical bonding misconceptions.
Rosyidah Syafaatur Rohmah +3 more
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Unveiling the bonding in HNBeCO: A valence bond theory approach [PDF]
Kragujevac Journal of ScienceIn this study, the bonding and electronic structure of the HNBeCO molecule were investigated using high level classical Valence Bond (VB) theory. Starting from a full-structure calculation involving 175 VB structures, we identified and selected only ...
Đorđević Slađana, Radenković Slavko
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Metal–Metal Bond in the Light of Pauling’s Rules
Molecules, 2021 About 70 years ago, in the framework of his theory of chemical bonding, Pauling proposed an empirical correlation between the bond valences (or effective bond orders (BOs)) and the bond lengths.
Elena Levi, Doron Aurbach, Carlo Gatti
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Styrofoam-and-Velcro: An Alternative to Ball-and-Stick Models
Journal of Microbiology & Biology Education, 2014 For students learning biology at introductory levels, one of the most significant instructional barriers is their lack of preparation in chemistry. In upper-division college chemistry and biology courses, students employ ball-and-stick models in order to
Sawyer R. Masonjones +5 more
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Exploiting limited valence patchy particles to understand autocatalytic kinetics
Nature Communications, 2018 Autocatalysis is common in chemistry, biophysics and material science, but existing approaches are unable to fully capture the physical mechanisms behind it.
Silvia Corezzi +2 more
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Redox Potential and Crystal Chemistry of Hexanuclear Cluster Compounds
Molecules, 2021 Most of TM6-cluster compounds (TM = transition metal) are soluble in polar solvents, in which the cluster units commonly remain intact, preserving the same atomic arrangement as in solids.
Elena Levi, Doron Aurbach, Carlo Gatti
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O CONCEITO DE VALÊNCIA EM LIVROS DIDÁTICOS DE QUÍMICA GERAL ENTRE AS DÉCADAS DE 1890 E 1940
Química NovaThis paper aims to investigate the presentation of the concept of valence in college-level, general chemistry textbooks published in the USA between the 1890s and the 1940s.
Helena S. Alvares Nogueira +1 more
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HYBRID ATOMIC ORBITALS IN ORGANIC CHEMISTRY. PART 2: CRITIQUE OF PRACTICAL ASPECTS
Química NovaThe importance of hybrid atomic orbitals, in both general and organic chemistry, is reviewed. Every contemporary textbook of organic chemistry introduces the directed-valence (e.g. sp3, sp2, sp) model, but the suitability of these hybrid orbitals for use
Guy Lamoureux, John F. Ogilvie
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Advanced Engineering Materials, EarlyView.An idea of designing novel sensors is proposed by creating appropriate Schottky barriers and vacancies between isomorphous Core‐CuOii/ Shell‐CuOi secondary microspheres and enhancing catalytic and spill‐over effects, and electronegativity via spontaneous biphasic separation, self‐assembly, and trace‐Ni‐doping.
Bala Ismail Adamu +8 more
wiley +1 more source