PROTON TRANSFER
Interplay of Proton Transfer, Electron Transfer and Proton Coupled Electron Transfer in Transition Metal Mediated Nitrogen Fixation
... Thesis Interplay of Proton Transfer, Electron Transfer and Proton Coupled Electron Transfer in Transition Metal Mediated Nitrogen Fixation Thesis by Benjamin David Matson In Partial Fulfillment of the[.] ...
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Coupled electron proton transfer reactions in biological redox active substrates
... electron transfer is accompanied by proton transfer. In one, proton transfer to the surrounding medium occurs influenced by changes in pH, and driving ...electron-proton ...
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Modulation of coordination in pincer-type isonicotinohydrazone Schiff base ligands by proton transfer
... the proton at the hydrazine group have been shifted to the uncoordinated pyridine ring and the ligand acted as a ...for proton transfer within the ligand molecule involving the keto-enol ...
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Demonstration of Baird’s Rule Complementarity in the Singlet State with Implications for Excited-State Intramolecular Proton Transfer
... Thus, NAP-E* is less antiaromatic relative to HBO-E* , which creates a lower driving force to form NAP-K* . Consequently, NAP-K* is less stabilized in the excited state and a larger energy gap must exist between NAP-K* ...
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Intra and intermolecular proton transfer in 2,6 diaminopyridinium 4 hydroxypyridin 1 ium 2,6 dicarboxylate
... asymmetric unit. The pyridine N atom of 2,6-diaminopyridine is protonated whereas chelidamic acid is deprotonated at both carboxylate groups but protonated at the N atom; the reaction involves intra- and intermolecular ...
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Formaldehyde measurements by Proton transfer reaction – Mass Spectrometry (PTR-MS): correction for humidity effects
... Several analytical techniques have been deployed to de- tect atmospheric HCHO including: cartridge collection fol- lowed by offline analysis (Grosjean and Fung, 1982), online gas to liquid trapping followed by ...
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OH clock determination by proton transfer reaction mass spectrometry at an environmental chamber
... Abstract. The hydroxyl free radical (OH) is the major oxi- dizing species in the lower atmosphere. Measuring the OH concentration is generally difficult and involves elaborate, expensive, custom-made experimental setups. ...
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Development and characterization of a High-Temperature Proton-Transfer-Reaction Mass Spectrometer (HT-PTR-MS)
... High-Temperature Proton- Transfer-Reaction Mass Spectrometer (HT-PTR-MS) in which both the ion source and the ion drift tube can be contin- uously operated at temperatures up to 250 ◦ ...
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Proton transfer reactions of a bridged bis-propyl bis-imidazolium salt
... supporting a rate-determining solvent reorganisation step for H/D-exchange of imidazolium salts includes the absence of significant general base catalysis, and the observation of significant internal return for analogous ...
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The 1:1 proton transfer compound of sulfanilamide with 3,5 dinitrosalicylic acid
... The usual intramolecular hydrogen bonding is found between the phenolic O atom and the anti-related H atom on the carboxyl group [O2ÐH1 O1 2.462 (2) AÊ], comparing closely with the mean for the current series (2.461 AÊ). ...
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The 1:1 proton transfer compound of benzylamine with 3,5 dinitrosalicylic acid
... 3,5-Dinitrosalicylic acid (DNSA) has proved to be the best of the nitro-substituted aromatic carboxylic acids for the construction of stable hydrogen-bonded cocrystalline solids. As well as giving a number of neutral ...
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Proton transfer and tautomerism in 2 aminopurine–thymine and pyrrolocytosine–guanine base pairs
... Figure S1 Change in energy of the optimised ground state S0 geometry as a function of H1 to N1 distance of both the gas phase and solution phase PC−G base pair for the proton transfer pr[r] ...
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Measurement of atmospheric sesquiterpenes by proton transfer reaction-mass spectrometry (PTR-MS)
... (PTR-MS) was investigated. SQT calibration standards were prepared by a capillary diffusion method and the PTR-MS- estimated mixing ratios were derived from the counts of product ions and proton transfer ...
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Proton transfer pathways in the mitochondrial S cerevisiae cytochrome c oxidase
... D proton pathways, while the pumped protons are transferred through the D ...third proton pathway, the H pathway, rather than through the D ...and proton transfer during the reaction of the ...
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Ultrafast investigation of light-driven electron proton transfer in intermolecular model systems
... controlled proton donors, given initial hydrogen bonding conditions allow ...state proton reactions of 8-hydroxy-1,3,6-pyrenetrisulfonic acid (HPTS), a common photoacid, and acetate ...for proton ...
160
Synthesis and spectroscopic studies of two novel proton transfer compounds containing (MoO4)2 ion
... five proton-transfer complexes assembled from 5,7-dimethyl-1,8-naphthyridine-2-amine with monocarboxylic acid, dicarboxylic acid, and tricarboxylic acid, ...
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The 1:1 proton transfer complex of 3,5 dinitrosalicylic acid with (8 quinolinyl)urea
... hydroxyl proton is anti-located adjacent to the carboxyl oxygen within the hydrogen bond, rather than being on the hydroxyl oxygen (this type of hydrogen bond was also reported in the proton-transfer ...
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The 1:1 proton transfer compound of 5 sulfosalicylic acid with 4 aminobenzoic acid
... The crystal structure of the anhydrous 1:1 proton-transfer compound of 5-sulfosalicylic acid (3-carboxy-4-hydroxy- benzenesulfonic acid) with 4-aminobenzoic acid, viz. 4-carboxyanilinium ...
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Amide Proton Transfer Imaging Allows Detection of Glioma Grades and Tumor Proliferation: Comparison with Ki 67 Expression and Proton MR Spectroscopy Imaging
... We previously observed that choline and NAA levels measured by MRSI correlated with MTRasym(3.5ppm) in a patient with anaplastic astrocytoma. Because APTWI and MRSI can produce similar information regarding tumor ...
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DFT MODELING OF TAUTOMERIC EQUILIBRIA AND PROTON TRANSFER OF PYRAZOLONE IN GAS PHASE AND IN SOLUTION
... of proton transfer reaction and dipole moments in gas phase and ...the proton transfer reaction is characterized by high activation energies in gas phase and in ...reverse proton ...
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