CONCEITOS EM CRISTALOGRAFIA ESTRUTUAL: UMA ABORDAGEM COMPREENSIVA DA LEI DE BRAGG E DO FATOR DE ESTRUTURA [PDF]
Química NovaIt is not uncommon that as a chemistry course progresses, along with the deepening of the content studied, the tendency of not carefully revisiting the foundations of the concepts covered and deepened also increases. The understanding of the structure of
Rafael P. Machado +1 more
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Charge-Transfer Probes for Molecular Recognition \u3cem\u3evia\u3c/em\u3e Steric Hindrance in Donor-Acceptor Pairs [PDF]
, 1997 Molecular association of various aromatic hydrocarbons (D, including sterically hindered donors) with a representative group of diverse acceptors (A = quinone, trinitrobenzene, tetracyanoethylene, tropylium, tetranitromethane, and nitrosonium) is ...
Kochi, Jay K. +2 more
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Advanced Functional Materials, EarlyView.Apatite occurs in many forms in nature, e.g. in teeth and geological minerals. Internally, biological apatite contains nanocrystals that are also found in synthetically prepared calcium phosphate nanoparticles which are used in biomedicine, e.g. for gene and drug delivery and for bone regeneration. Abstract Calcium phosphate is the inorganic component (
Kathrin Kostka +3 more
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Synthesis and coordination chemistry of 2-(di-2-pyridylamino)pyrimidine; structural aspects of spin crossover in an Fe(II) complex [PDF]
, 2012 This paper was accepted on February 26 20122-(Di-2-pyridylamino)pyrimidine (L), a potentially ditopic tetradentate ligand, was synthesized from commercially available di-2-pyridylamine and 2-chloropyrimidine.
Addison +38 more
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Advanced Functional Materials, EarlyView.In situ TEM uncovers the atomic‐scale mechanisms underlying hydrogen‐driven γ‐Fe2O3→Fe3O4→FeO reduction. In γ‐Fe2O3, oxygen vacancies cluster around intrinsic Fe vacancies, leading to nanopore formation, whereas in Fe3O4, vacancy aggregation is suppressed, preserving a dense structure.
Yupeng Wu +14 more
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Fluorotetrahydroquinolines from Diethyl 2-Fluoromalonate Ester
CHIMIA, 2014 A short series of fluorotetrahydroquinolines was synthesised in two steps from diethyl fluoromalonate and appropriate ortho-nitrobenzyl bromide precursors.
Craig A. Fisher +4 more
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Abstract OR-22: In vitro Cryo Electron Tomography study of protective Dps-DNA co-crystallization [PDF]
International Journal of Biomedicine, 2019 Background: It was shown that when exposed to extreme environment Dps-DNA co-crystallization takes place in Escherichia coli as a protective mechanism.
Roman Kamyshinsky +6 more
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Is Captain Kirk a natural blonde? Do X-ray crystallographers dream of electron clouds? Comparing model-based inferences in science with fiction [PDF]
, 2018 Scientific models share one central characteristic with fiction: their relation to the physical world is ambiguous. It is often unclear whether an element in a model represents something in the world or presents an artifact of model building.
Barwich, Ann-Sophie
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Crystal structure and charge distribution of pyrazine: effects of extinction, thermal diffuse scattering and series termination [PDF]
, 1976 The crystal structure and electronic charge distribution of pyrazine (1,4-diazabenzene) has been determined at 184 K by X-ray methods. The structural results of Wheatley [Acta Cryst. (1957), 10, 182-187] have been confirmed. A clear indication of bonding
Feil, D., Harkema, S., With, G. de
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The Anisotropic Adsorption of De Novo Allosteric Two‐Component Protein Fibers on Mica Surfaces
Advanced Functional Materials, EarlyView.In this study, the interfacial behavior of de novo designed proteins that self‐assemble into tubular architectures with distinct morphologies — small (S), large (L), and helical (H) fibers — at the muscovite mica‐water interface is explored using in situ AFM. Abstract Protein adsorption at solid–liquid interfaces underlies many biomedical and materials
Chenyang Shi +7 more
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