The Hydrogen Bond Donor
Activation of Electron-Deficient Quinones Through Hydrogen-Bond-Donor-Coupled Electron Transfer
... 22 Figure 2.3. Thermodynamic analysis of hydrogen-bond-donor-coupled electron transfer. The activating effect of a HBD on the overall reaction can be understood in terms of binding of the HBD to the ...
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Competing hydrogen-bond and halogen-bond donors in crystal engineering
... between hydrogen- and halogen-bond donors we 5 have synthesized two ligands, 3,3’-azobipyridine and 4,4’-azobipyridine, and co-crystallized them with a series of bi-functional donor molecules ...
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Complementary and Self-Complementary Hydrogen Bond Double Helical Complexes
... construct donor strands 3-3a-c that would form exceptionally strong contiguous complementary ...strongest hydrogen bond donor arrays we could easily ...intermolecular hydrogen bonding ...
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Recent advances in the synthesis and application of hydrogen bond templated rotaxanes and catenanes
... of hydrogen bond templated rotaxanes and ...alternative hydrogen bond donor/acceptor arrangements, and their exploitation, will be ...
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Hydrogen bond dynamics in bulk alcohols
... the donor alcohol, the angular velocity starts increasing ...the donor hydrogen that dominates the reaction ...the hydrogen jump mech- anism of water 4 and ...stronger hydrogen bonded ε ...
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On the Nature of the Hydrogen Bond and Biomolecular Solvation
... H-bond donor water ...OH bond length and HOH angle are certainly important in the energetics of real water H-bonds, it is only through the use of the rigid monomer approximation that we were able to ...
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Thioindigo-Based Photoswitchable Hydrogen Bond Arrays
... groups pull electron density away from the donor hydrogen atoms through induction and resonance to make them more electropositive. 1.5 Photoswitches Molecular photoswitches are small molecules that ...
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Photo-Isomerizable Complementary Hydrogen Bond Arrays
... simple synthetic method, a library of indoles with an ethyl ester or a cyano group in the 3-position was produced. An acceptor array for these donor compounds, 2, 2’- azopyridine was chosen and we measured the ...
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partial positive an acid is a hydrogen ion donor, or proton donor base is a hydrogen ion acceptor, or proton acceptor acidic protons acid base
... The basic carbon skeleton is an alkane-like structure, made up of only sp 3 carbons and hydrogen atoms, and therefore only sigma (single) bonds. It constitutes the framework that supports the reactive sites, or ...
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Effective Binding of Methane Using a Weak Hydrogen Bond
... of bond character exists between H and Y moieties, and X is more electronegative than H, even if only moderately (in the case of X as ...the donor and Y is the ...weak hydrogen bonds have an H···Y ...
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Formation of an unusually short hydrogen bond in photoactive yellow protein.
... H bond could be a very strong bond, the pR CW intermediate would be very stable and the proceeding pB state would never form in such a time ...the donor and acceptor moieties is not directly ...
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Relative strength of hydrogen bond interaction in alcohol water complexes
... HO HOCH 3 and CH 3 CH 2 OH OHCH 3 . To abbrevi- ate these different isomers we adopt the notation that the DA acronym stands for the proton donor and proton acceptor of the hydrogen bond. For ...
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The catalytic aquathermolysis of heavy oil in the presence of a hydrogen donor under reservoirs conditions
... sulfide bond in sulfides and thiophenes. The break of C-S bond in sulfides will reduce the amount of molecule with higher molecular and decrease the content of asphaltene so that the viscosity of heavy oil ...
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Applications of Sterically Protected Hydrogen Bond Donors in the Secondary Coordination Sphere
... The phenylamino group is the ideal substitute for both 2-hydroxypyridine and pivalamido-based ligands. The phenyl group maintains a planar steric profile that can be expanded through ortho, meta and para substitutions ...
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Azobenzene-based difunctional halogen-bond donor: Towards the engineering of photoresponsive co-crystals
... The crystal packing is mainly driven by hydrogen bonds between the H atoms in the para position on the tetrafluorobenzene rings and two F atoms of the adjacent molecules Fig.. This kind [r] ...
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The Contrasting Character of Early and Late Transition Metal Fluorides as Hydrogen Bond Acceptors
... of hydrogen bonding to metal fl uoride complexes is certainly the polarity of the M − F ...the bond depends on the electronegativity di ff erences between the ...F bond relative to Ni − ...M−F ...
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The Contrasting Character of Early and Late Transition Metal Fluorides as Hydrogen Bond Acceptors
... of hydrogen bonding to metal fl uoride complexes is certainly the polarity of the M−F ...the bond depends on the electronegativity di ff erences between the ...F bond relative to Ni − ...F bond, ...
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Hydrogen-bond driven supramolecular chemistry for modulating physical properties of pharmaceutical compounds
... N-H donor has a choice of three different potential hydrogen-bond acceptors, it is not obvious how the competition between those three oxygen atoms will play ...
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Multipurpose nitrogen donor ligands for homogeneous transition metal catalysis: from carbonylation to hydrogen generation
... Pd–acyl bond a five-membered Pd-metallacycle originates from the interaction of the growing chain with the metal through the last inserted carbonyl ...Pd–alkyl bond is a ...
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Hydrogen bond dynamics in bulk alcohols
... 211101-2 Opron, Xia, and Wei J. Chem. Phys. 142, 211101 (2015) However, there is one more important cause that has not been discussed in the literature to our best knowledge, namely, multiple characteristic length scales ...
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