ChemInform Abstract: Structural Characterization of Tungsten Phosphide (WP) Hydrotreating Catalysts by X-Ray Absorption Spectroscopy and Nuclear Magnetic Resonance Spectroscopy.

ChemInform ◽  
2010 ◽  
Vol 33 (20) ◽  
pp. no-no
Author(s):  
S. T. Oyama ◽  
P. Clark ◽  
X. Wang ◽  
T. Shido ◽  
Y. Iwasawa ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Structural Characterization ◽  
Resonance Spectroscopy ◽  
X Ray ◽  
Tungsten Phosphide ◽  
X Ray Absorption

η^2 bonded Nickel(0) thiophene π-complexes - identifying the missing link in catalyst transfer polymerization

2018 ◽  
Author(s):  
Weiying He ◽  
Brian O. Patrick ◽  
Pierre Kennepohl
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Absorption Spectroscopy ◽  
Resonance Spectroscopy ◽  
X Ray ◽  
Close Analog ◽  
X Ray Absorption ◽  
Structural Insights

<p>We have structurally characterized a nickel(0) thiophene complex that represents a close analog to the proposed intermediates in the mechanism of catalyst transfer polycondensation (CTP) of thiophenes. Additional studies on this intermediate allow us to determine the bonding in such complexes using a combination of nuclear magnetic resonance spectroscopy, X-ray absorption spectroscopy, and DFT-based computations. Our structure of the catalyst agrees with previous postulates but provides important new structural insights into the species. Furthermore, our studies explain why these complexes actually exist and are stable enough to support living CTP.</p>

η^2 bonded Nickel(0) thiophene π-complexes - identifying the missing link in catalyst transfer polymerization

2018 ◽  
Author(s):  
Weiying He ◽  
Brian O. Patrick ◽  
Pierre Kennepohl
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Absorption Spectroscopy ◽  
Resonance Spectroscopy ◽  
X Ray ◽  
Close Analog ◽  
X Ray Absorption ◽  
Structural Insights

<p>We have structurally characterized a nickel(0) thiophene complex that represents a close analog to the proposed intermediates in the mechanism of catalyst transfer polycondensation (CTP) of thiophenes. Additional studies on this intermediate allow us to determine the bonding in such complexes using a combination of nuclear magnetic resonance spectroscopy, X-ray absorption spectroscopy, and DFT-based computations. Our structure of the catalyst agrees with previous postulates but provides important new structural insights into the species. Furthermore, our studies explain why these complexes actually exist and are stable enough to support living CTP.</p>

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