scholarly journals Squeezing out the Catalysts: The Disulphide Bond Exchange in Aryl Disulphides at High Hydrostatic Pressure

2020 ◽  
Author(s):  
Szymon Sobczak ◽  
Paulina Ratajczyk ◽  
Andrzej Katrusiak
Keyword(s):  
Diamond Anvil Cell ◽  
Crystal Form ◽  
Disulphide Bond ◽  
X Ray Diffraction ◽  
Exchange Reactions ◽  
X Ray ◽  
Equilibrium Reactions ◽  
Diamond Anvil ◽  
Optimized Conditions ◽  
Pure Single Crystal

Exchange of the disulphide bond is a prominent example of equilibrium reactions. Therefore, the wide library of disulphide exchange reactions requires the application of catalysts, such as reducing agents, strong bases, ultraviolet light, or ultrasounds to stimulate higher conversion yields. We employed the pressure between 100 and 400 MPa, for promoting the exchange reactions between various homodimeric aryl disulphides and for optimized conditions obtained 100 % yields and pure single-crystal form of the heterodimer. The reactions were performed in a diamond-anvil cell, as well as in a hydraulic piston-and-cylinder press, and the products were characterized by X-ray diffraction, mass and NMR spectroscopy. <br>

scholarly journals Squeezing out the Catalysts: The Disulphide Bond Exchange in Aryl Disulphides at High Hydrostatic Pressure

2020 ◽  
Author(s):  
Szymon Sobczak ◽  
Paulina Ratajczyk ◽  
Andrzej Katrusiak
Keyword(s):  
Diamond Anvil Cell ◽  
Crystal Form ◽  
Disulphide Bond ◽  
X Ray Diffraction ◽  
Exchange Reactions ◽  
X Ray ◽  
Equilibrium Reactions ◽  
Diamond Anvil ◽  
Optimized Conditions ◽  
Pure Single Crystal

Exchange of the disulphide bond is a prominent example of equilibrium reactions. Therefore, the wide library of disulphide exchange reactions requires the application of catalysts, such as reducing agents, strong bases, ultraviolet light, or ultrasounds to stimulate higher conversion yields. We employed the pressure between 100 and 400 MPa, for promoting the exchange reactions between various homodimeric aryl disulphides and for optimized conditions obtained 100 % yields and pure single-crystal form of the heterodimer. The reactions were performed in a diamond-anvil cell, as well as in a hydraulic piston-and-cylinder press, and the products were characterized by X-ray diffraction, mass and NMR spectroscopy. <br>

scholarly journals Squeezing out the Catalysts: The Disulphide Bond Exchange in Aryl Disulphides at High Hydrostatic Pressure

2020 ◽  
Author(s):  
Szymon Sobczak ◽  
Paulina Ratajczyk ◽  
Andrzej Katrusiak
Keyword(s):  
Diamond Anvil Cell ◽  
Crystal Form ◽  
Disulphide Bond ◽  
X Ray Diffraction ◽  
Exchange Reactions ◽  
X Ray ◽  
Equilibrium Reactions ◽  
Diamond Anvil ◽  
Optimized Conditions ◽  
Pure Single Crystal

Exchange of the disulphide bond is a prominent example of equilibrium reactions. Therefore, the wide library of disulphide exchange reactions requires the application of catalysts, such as reducing agents, strong bases, ultraviolet light, or ultrasounds to stimulate higher conversion yields. We employed the pressure between 100 and 400 MPa, for promoting the exchange reactions between various homodimeric aryl disulphides and for optimized conditions obtained 100 % yields and pure single-crystal form of the heterodimer. The reactions were performed in a diamond-anvil cell, as well as in a hydraulic piston-and-cylinder press, and the products were characterized by X-ray diffraction, mass and NMR spectroscopy. <br>

scholarly journals Bulk modulus of H2O across the ice VII–ice X transition measured by time-resolved x-ray diffraction in dynamic diamond anvil cell experiments

2021 ◽  
Vol 103 (6) ◽  
Author(s):  
A. S. J. Méndez ◽  
F. Trybel ◽  
R. J. Husband ◽  
G. Steinle-Neumann ◽  
H.-P. Liermann ◽  
...  
Keyword(s):  
Bulk Modulus ◽  
Diamond Anvil Cell ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray ◽  
Diamond Anvil

PHASE TRANSITION IN LAYERED PEROVSKITE LIKE MANGANATE Ca3Mn2O7 UNDER HIGH PRESSURE

2001 ◽  
Vol 15 (18) ◽  
pp. 2491-2497 ◽  
Author(s):  
J. L. ZHU ◽  
L. C. CHEN ◽  
R. C. YU ◽  
F. Y. LI ◽  
J. LIU ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Diamond Anvil Cell ◽  
The Other ◽  
Layered Perovskite ◽  
X Ray Diffraction ◽  
Two Phase ◽  
X Ray ◽  
Diamond Anvil

In situ high pressure energy dispersive X-ray diffraction measurements on layered perovskite-like manganate Ca 3 Mn 2 O 7 under pressures up to 35 GPa have been performed by using diamond anvil cell with synchrotron radiation. The results show that the structure of layered perovskite-like manganate Ca 3 Mn 2 O 7 is unstable under pressure due to the easy compression of NaCl-type blocks. The structure of Ca 3 Mn 2 O 7 underwent two phase transitions under pressures in the range of 0~35 GPa. One was at about 1.3 GPa with the crystal structure changing from tetragonal to orthorhombic. The other was at about 9.5 GPa with the crystal structure changing from orthorhombic back to another tetragonal.

scholarly journals Synchrotron X-ray diffraction tomography technique using diamond anvil cell

2011 ◽  
Vol 67 (a1) ◽  
pp. C113-C113
Author(s):  
H. Liu ◽  
L. Wang ◽  
Z. Yu ◽  
L. Kong ◽  
J. Zhao ◽  
...  
Keyword(s):  
Diamond Anvil Cell ◽  
Diffraction Tomography ◽  
X Ray Diffraction ◽  
X Ray ◽  
Diamond Anvil

Construction of laser-heated diamond anvil cell system for in situ x-ray diffraction study at SPring-8

2001 ◽  
Vol 72 (2) ◽  
pp. 1289 ◽  
Author(s):  
Tetsu Watanuki ◽  
Osamu Shimomura ◽  
Takehiko Yagi ◽  
Tadashi Kondo ◽  
Maiko Isshiki
Keyword(s):  
Diffraction Study ◽  
Diamond Anvil Cell ◽  
Cell System ◽  
X Ray Diffraction ◽  
X Ray ◽  
Diamond Anvil ◽  
Laser Heated

Chemistry through cocrystals: pressure-induced polymerization of C2H2·C6H6to an extended crystalline hydrocarbon

2018 ◽  
Vol 20 (10) ◽  
pp. 7282-7294 ◽  
Author(s):  
Matthew D. Ward ◽  
Haw-Tyng Huang ◽  
Li Zhu ◽  
Arani Biswas ◽  
Dmitry Popov ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Single Crystal ◽  
Diamond Anvil Cell ◽  
X Ray Diffraction ◽  
X Ray ◽  
Diamond Anvil

The 1 : 1 acetylene–benzene cocrystal, C2H2·C6H6, was synthesized under pressure in a diamond anvil cell (DAC) and its evolution under pressure was studied with single-crystal X-ray diffraction and Raman spectroscopy.

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