Study of the role of intermolecular interactions (hydrogen bonds) in the initial stage of orientation of polyvinyl alcohol and vinyl alcohol copolymers

Elastic properties and equation of state of propane-based alcohols under pressure provide new insight into the role of hydrogen bonds in intermolecular interactions.

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Probing the relationships between molecular conformation and intermolecular contacts inN,N-dibenzyl-N′-(furan-2-carbonyl)thiourea

Acta Crystallographica Section C Crystal Structure Communications ◽

10.1107/s0108270111052620 ◽

2011 ◽

Vol 68 (1) ◽

pp. o19-o22 ◽

Cited By ~ 14

Author(s):

Hiram Pérez ◽

Rodrigo S. Corrêa ◽

Ana María Plutín ◽

Beatriz O'Reilly ◽

Marcelo B. Andrade

Keyword(s):

Crystal Structure ◽

Hydrogen Bonds ◽

Intermolecular Interactions ◽

Molecular Conformation ◽

Hirshfeld Surface ◽

Full Understanding ◽

Hydrogen Bond Interactions ◽

Compound C ◽

Intermolecular Contacts

In the crystal structure of the title compound, C20H18N2O2S, molecules are linked by bifurcated C—H...O hydrogen-bond interactions, giving rise to chains whose links are composed of alternating centrosymmetrically disposed pairs of molecules and characterized byR22(10) andR22(20) hydrogen-bonding motifs. Also, N—H...S hydrogen bonds form infinite zigzag chains along the [010] direction, which exhibit theC(4) motif. Hirshfeld surface and fingerprint plots were used to explore the intermolecular interactions in the crystal structure. This analysis confirms the important role of C—H...O hydrogen bonds in the molecular conformation and in the crystal structure, providing a potentially useful tool for a full understanding of the intermolecular interactions in acylthiourea derivatives.

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The role of non-covalent interactions in some 2-trifluoromethylchromones in the solid state

New Journal of Chemistry ◽

10.1039/c7nj00481h ◽

2017 ◽

Vol 41 (23) ◽

pp. 14659-14674 ◽

Cited By ~ 4

Author(s):

Christian David Alcívar León ◽

Gustavo Alberto Echeverría ◽

Oscar Enrique Piro ◽

Sonia Elizabeth Ulic ◽

Jorge Luis Jios ◽

...

Keyword(s):

Solid State ◽

Hydrogen Bonds ◽

Intermolecular Interactions ◽

Non Covalent Interactions ◽

Covalent Interactions ◽

Organic Fluorine

Intermolecular interactions in chromone systems and criteria for the existence of C–H⋯F hydrogen bonds involving organic fluorine have been focused on in this work.

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Density Functional Theory (B3LYP) Study of Substituent Effects on O–H Bond Dissociation Enthalpies of trans-Resveratrol Derivatives and the Role of Intramolecular Hydrogen Bonds

The Journal of Organic Chemistry ◽

10.1021/jo301612a ◽

2012 ◽

Vol 77 (22) ◽

pp. 10093-10104 ◽

Cited By ~ 15

Author(s):

Elyas Nazarparvar ◽

Mansour Zahedi ◽

Erik Klein

Keyword(s):

Density Functional Theory ◽

Hydrogen Bonds ◽

Density Functional ◽

Substituent Effects ◽

Functional Theory ◽

Intramolecular Hydrogen Bonds ◽

Bond Dissociation ◽

Resveratrol Derivatives ◽

Intramolecular Hydrogen

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A LONGITUDINAL INVESTIGATION OF EXPLICIT AND IMPLICIT AUDITORY PROCESSING IN L2 SEGMENTAL AND SUPRASEGMENTAL ACQUISITION

Studies in Second Language Acquisition ◽

10.1017/s0272263120000649 ◽

2021 ◽

pp. 1-23

Author(s):

Hui Sun ◽

Kazuya Saito ◽

Adam Tierney

Keyword(s):

Adult Learners ◽

Auditory Processing ◽

First Language ◽

Neural Representation ◽

Immersion Experience ◽

Initial Stage ◽

Chinese Learners ◽

Processing Ability ◽

Speech Learning

Abstract Precise auditory perception at a subcortical level (neural representation and encoding of sound) has been suggested as a form of implicit L2 aptitude in naturalistic settings. Emerging evidence suggests that such implicit aptitude explains some variance in L2 speech perception and production among adult learners with different first language backgrounds and immersion experience. By examining 46 Chinese learners of English, the current study longitudinally investigated the extent to which explicit and implicit auditory processing ability could predict L2 segmental and prosody acquisition over a 5-month early immersion. According to the results, participants’ L2 gains were associated with more explicit and integrative auditory processing ability (remembering and reproducing music sequences), while the role of implicit, preconscious perception appeared to be negligible at the initial stage of postpubertal L2 speech learning.

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