Unusual Thermal Expansion in Hydrogen Bonded Network of an Organic Salt Induced by Large Transverse Vibration of Atoms

2021 ◽  
Vol 21 (3) ◽  
pp. 1428-1433
Author(s):  
Lalita Negi ◽  
Sunil Kumar ◽  
Bhavna Dwivedi ◽  
Dinabandhu Das
Keyword(s):  
Thermal Expansion ◽  
Transverse Vibration ◽  
Organic Salt ◽  
Hydrogen Bonded

Transverse vibration driven large uniaxial negative and zero thermal expansion in boron bridged REPt3B framework materials

2018 ◽  
Vol 20 (21) ◽  
pp. 14876-14883 ◽  
Author(s):  
Sudipta Mondal ◽  
Chandan Mazumdar ◽  
R. Ranganathan
Keyword(s):  
Thermal Expansion ◽  
Rare Earth ◽  
Transverse Vibration ◽  
Low Temperatures ◽  
Linear Chain ◽  
Rare Earth Compounds ◽  
Thermal Expansion Behavior ◽  
Framework Materials ◽  
Expansion Behavior ◽  
Anomalous Thermal Expansion

REPt3B (RE = rare-earth) compounds exhibit anomalous thermal expansion behavior at low temperatures driven by transverse vibration of boron atoms perpendicular to the Pt(2)–B–Pt(2) linear chain.

Uniaxial thermal expansion behaviors and ionic conduction in a layered (NH4)2V3O8

2020 ◽  
Vol 49 (30) ◽  
pp. 10638-10644
Author(s):  
Zhi-Yuan Yao ◽  
Guo-Qin Zhang ◽  
Wan-Wan Yao ◽  
Xiao-Zu Wang ◽  
Yin Qian ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Transverse Vibration ◽  
Ionic Conduction

Layered (NH4)2V3O8 exhibits ZTE and NTE behaviors along the c-axis, and ZTE nature along the a-axis owing to swing-like movement of vanadyl in VO4 tetrahedra and transverse vibration of bridged O atoms connecting VO4 tetrahedra.

Thermal expansion of β-succinic acid and α-adipic acid in relation to their crystal structures

1965 ◽  
Vol 285 (1402) ◽  
pp. 370-381 ◽  
Keyword(s):  
Thermal Expansion ◽  
Succinic Acid ◽  
Crystal Structures ◽  
Adipic Acid ◽  
Van Der Waals ◽  
Van Der Waals Forces ◽  
Molecular Packing ◽  
X Ray ◽  
Angular Vibration ◽  
Hydrogen Bonded

The thermal expansion quadrics of β -succinic acid and α -adipic acid have been determined by X-ray Weissenberg method. In adipic acid, X-ray measurements have been made between —100 and +100°C and in succinic acid between —150 and +130°C. In these monoclinic crystals, the minimum expansion corresponds to the c axis, which coincides with the direction of the hydrogen-bonded molecular columns. In other directions along which van der Waals forces prevail, thermal expansion is greater, being maximum perpendicular to the (100) planes, the direction of the obtuse bisectrix of the molecular packing angle. The thermal expansion is quantitatively explained by assuming an increase in the angular vibration of the molecules.

scholarly journals Hydrogen bonding in the crystal structure of the molecular salt of pyrazole–pyrazolium picrate

2016 ◽  
Vol 72 (6) ◽  
pp. 861-863 ◽  
Author(s):  
Ping Su ◽  
Xue-gang Song ◽  
Ren-qiang Sun ◽  
Xing-man Xu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Organic Salt ◽  
Asymmetric Unit ◽  
Molecular Salt ◽  
Hydrogen Bonded

The asymmetric unit of the title organic salt [systematic name: 1H-pyrazol-2-ium 2,4,6-trinitrophenolate–1H-pyrazole (1/1)], H(C3H4N2)2+·C6H2N3O7−, consists of one picrate anion and one hydrogen-bonded dimer of a pyrazolium monocation. The H atom involved in the dimer N—H...N hydrogen bond is disordered over both symmetry-unique pyrazole molecules with occupancies of 0.52 (5) and 0.48 (5). In the crystal, the component ions are linked into chains along [100] by two different bifurcated N—H...(O,O) hydrogen bonds. In addition, weak C—H...O hydrogen bonds link inversion-related chains, forming columns along [100].

Influence of Multiple Hydrogen Bonds on Thermal Expansion Within and Between Two-Dimensional Hydrogen-Bonded Sheets

2019 ◽  
Vol 19 (12) ◽  
pp. 7380-7384
Author(s):  
Xiaodan Ding ◽  
Navkiran Juneja ◽  
Adam W. Crawford ◽  
Eric W. Reinheimer ◽  
Daniel K. Unruh ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Hydrogen Bonds ◽  
Two Dimensional ◽  
Multiple Hydrogen Bonds ◽  
Hydrogen Bonded

Modulation of Thermal Expansion by Guests and Polymorphism in a Hydrogen Bonded Host

2015 ◽  
Vol 15 (2) ◽  
pp. 593-601 ◽  
Author(s):  
Viswanadha G. Saraswatula ◽  
Binoy K. Saha
Keyword(s):  
Thermal Expansion ◽  
Hydrogen Bonded
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