Results 21 to 30 of about 357,701 (311)

Tris(μ2-carbonyl)octacarbonyl(triphenylphosphite)tetracobalt

open access: yesMolbank, 2022
In toluene solution, the reaction of [Co2(CO)8] with an equimolar amount of [P(OPh)3] yields first [Co2(CO)7{P(OPh)3}] 1. Following heating of 1, an alternative synthetic access to the tetranuclear cluster [{Co4(μ2-CO)3(CO)8{P(OPh)3}] 2 is provided in a ...
Isabelle Jourdain   +3 more
doaj   +1 more source

Nature of Amide Carbonyl−Carbonyl Interactions in Proteins

open access: yesJournal of the American Chemical Society, 2009
Noncovalent interactions define and modulate biomolecular structure, function, and dynamics. In many protein secondary structures, an intimate interaction exists between adjacent carbonyl groups of the main-chain amide bonds. As this short contact contributes to the energetics of protein conformational stability as well as protein-ligand interactions ...
Choudhary, Amit   +3 more
openaire   +2 more sources

Inadequacy of Continuum Solvation for Polar Reactions: Predicting the Mechanism of Carbonyl–Olefin Metathesis

open access: yes, 2022
In carbonyl–olefin metathesis, two π-bonds undergo a cycloaddition-cycloreversion process to form valuable alkenes from simple precursors. Although this synthetic methodology has advanced significantly, further improvements would be greatly facilitated ...
Eugene, Kwan   +5 more
core   +1 more source

(OC-6-35-A)-Aquadicarbonylchlorido[2-(2-pyridyl)-1,8-naphthyridine-κ;2N1,N2]ruthenium(II) hexafluoridophosphate 2,2′-Bipyridine

open access: yesMolbank, 2017
A dicarbonylruthenium(II) complex containing bidentate 2-(2-pyridyl)-1,8-naphthyridine, as well as monodentate aqua and chlorido ligands, were isolated and characterized using spectroscopic techniques and single crystal X-ray diffraction.
Tsugiko Takase, Ryosuke Abe, Dai Oyama
doaj   +1 more source

Carbonyl sulfide (COS) as a tracer for canopy photosynthesis, transpiration and stomatal conductance : potential and limitations

open access: yes, 2011
The theoretical basis for the link between the leaf exchange of carbonyl sulfide (COS), carbon dioxide (CO2) and water vapour (H2O) and the assumptions that need to be made in order to use COS as a tracer for canopy net photosynthesis, transpiration and ...
HEINZ BINGEMER   +14 more
core   +1 more source

Carbonyl-Stabilized Phosphorus Ylide as an Organocatalyst for Cyanosilylation Reactions Using TMSCN

open access: yes, 2020
We report carbonyl-stabilized phosphorus ylides as general and efficient catalysts for the cyanosilylation of ketones. The N,N-diethylacetamide derived phosphorane is identified as an extremely efficient catalyst for the cyanosilylation of dialkyl ...
Wen-Biao Wu (8500884)   +5 more
core   +1 more source

Ab Initio Calculations of Possible γ-Gauche Effects in the 13C-NMR for Methine and Carbonyl Carbons in Precise Polyethylene Acrylic Acid Copolymers

open access: yesMolecules, 2013
The impacts of local polymer chain conformations on the methine and carbonyl 13C-NMR chemical shifts for polyethylene acrylic acid p(E-AA) copolymers were predicted using ab initio methods.
Todd M. Alam
doaj   +1 more source

Evaluation of the phytotoxicity of decabromodiphenyl ether (BDE-209) in Chinese cabbage

open access: yesBiologia Plantarum, 2022
Decabromodiphenyl ether (BDE-209), a major component of brominated flame retardants, has been detected in considerable amounts in the soil. Given that BDE-209 is toxic, ubiquitous, and persistent, it may cause toxic effects on vegetables planted in ...
Y.T. MENG   +6 more
doaj   +1 more source

Crystal structures of four new iridium complexes, each containing a highly flexible carbodiphosphorane PCP pincer ligand

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2018
Compound [Ir(C8H12)(C51H45P4)]Cl2 or [Ir(cod)(CH(dppm)2-κ3P,C,P)]Cl2 (1a), was obtained from [IrCl(cod)]2 and the carbodiphosphorane (CDP) salt [CH(dppm)2]Cl [where cod = cycloocta-1,5-diene and dppm = bis(diphenylphosphino)methane]. Treatment of 1a with
Gabriel Julian Partl   +6 more
doaj   +1 more source

Catalytic, Transannular Carbonyl-Olefin Metathesis Reactions

open access: yes, 2019
A new class of Lewis acid-catalyzed carbonyl-olefin metathesis reactions is described that complements existing protocols for related ring-closing, ring-opening, and intermolecular transformations.
Paul, Riehl   +2 more
core   +1 more source

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