Results 21 to 30 of about 4,298,533 (147)

Is Hyperconjugation Responsible For The Gauche Effect In 1-Fluoropropane And Other 2-Substituted-1-Fluoroethanes? [PDF]

open access: yes, 1999
The energies and geometries of a series of 2-substituted-1-fluoroethanes were computed at the MP2/6-311++G**(6D)//MP2/6-31+G* level of theory for both the maxima and minima of the rotation about the C-C bond.
Borden, W. T.   +3 more
core   +1 more source

Chemical Compositions, Spring 2014 [PDF]

open access: yes, 2013
The newsletter of the Department of Chemistry, published once or twice a year, highlights people, events, and facilities. Content includes brief articles on new faculty hires, faculty and staff retirements, obituaries, major facilities and equipment ...
Department of Chemistry
core   +1 more source

RESEARCH IN CHEMISTRY [PDF]

open access: yesSchool Science and Mathematics, 1917
It will be the object of this department to present each month the very latest results of investigations in the pedagogy of chemistry, to bring to the teacher those new and progressive ideas which will enable him to keep abreast of the times. Suggestions and contributions should be sent to Dr. B. S. Hopkins, University of Illinois. Urbana, III.
openaire   +2 more sources

N-Methylimidazole Promotes The Reaction Of Homophthalic Anhydride With Imines [PDF]

open access: yes, 2014
The addition of N-methylimidazole (NMI) to the reaction of homophthalic anhydride with imines such as pyridine-3-carboxaldehyde-N-trifluoroethylimine (9) reduces the amount of elimination byproduct and improves the yield of the formal cycloadduct ...
Aaron Levin   +25 more
core   +3 more sources

Inorganic chemistry [PDF]

open access: yesAnnual Reports on the Progress of Chemistry, 1912
n ...
openaire   +2 more sources

Quadruplexes In ‘Dicty’: Crystal Structure Of A Four-Quartet G-Quadruplex Formed By G-Rich Motif Found In The Dictyostelium Discoideum Genome [PDF]

open access: yes, 2018
Guanine-rich DNA has the potential to fold into non-canonical G-quadruplex (G4) structures. Analysis of the genome of the social amoeba Dictyostelium discoideum indicates a low number of sequences with G4-forming potential (249–1055).
Armane, S.   +6 more
core   +2 more sources

Aggregation Of Chlorophyll a Probed By Resonance Light Scattering Spectroscopy [PDF]

open access: yes, 1995
We report the resonance light scattering (RLS) spectra of chlorophyll a aggregated in a 9:1 solution of formamide and pH 6.8 phosphate buffer. The aggregate formed after 2 h of mixing, referred to as Chl(469), shows a strong scattering feature at 469 nm (
de Paula, J. C.   +2 more
core   +3 more sources

Mechanism For Copper(II)-Mediated Disaggregation Of A Porphyrin J-Aggregate [PDF]

open access: yes, 2018
J-aggregates of anionic meso-tetrakis(4-sulfonatophenyl)porphyrin form at intermediate pH (2.3–3.1) in the presence of NiSO₄ or ZnSO₄ (ionic strength, I.S. = 3.2 M).
Castriciano, M. A.   +7 more
core   +1 more source

Rudimentary G-Quadruplex-Based Telomere Capping In Saccharomyces Cerevisiae [PDF]

open access: yes, 2011
Telomere capping conceals chromosome ends from exonucleases and checkpoints, but the full range of capping mechanisms is not well defined. Telomeres have the potential to form G-quadruplex (G4) DNA, although evidence for telomere G4 DNA function in vivo ...
A De Cian   +71 more
core   +2 more sources

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