Hydrogen exchange in amidinium ions. Chemically significant consequences of slow rotation about a carbon-nitrogen single bond

1974 ◽  
Vol 96 (17) ◽  
pp. 5631-5632 ◽  
Author(s):  
Charles L. Perrin
Keyword(s):  
Hydrogen Exchange ◽  
Slow Rotation ◽  
Single Bond

Remarkably Slow Rotation about a Single Bond between an sp3-Hybridised Carbon Atom and an Aromatic Ring withoutorthoSubstituents

2009 ◽  
Vol 15 (9) ◽  
pp. 2185-2189 ◽  
Author(s):  
Sarah Murrison ◽  
David Glowacki ◽  
Christian Einzinger ◽  
James Titchmarsh ◽  
Stephen Bartlett ◽  
...  
Keyword(s):  
Carbon Atom ◽  
Aromatic Ring ◽  
Slow Rotation ◽  
Single Bond

Statistical Study of the Rotation Effect of Am Stars

1976 ◽  
Vol 32 ◽  
pp. 675-683
Author(s):  
Keiichi Kodaira
Keyword(s):  
Statistical Study ◽  
Rotation Velocity ◽  
General View ◽  
Slow Rotation ◽  
Rotation Effect

SummaryExcess of [m1] index of Am stars, relative to normal stars, is statistically found to be correlated with rotation velocity; the coefficient is estimated at ∆׀m1׀ /∆V(km/sec) ˜ - 0.0007 among Am stars. This result supports the general view that slow rotation is essential for Am phenomena.

Nickel-Catalyzed Inter- and Intramolecular Carbon-Sulfur Bond Metathesis by Reversible Arylation

2019 ◽  
Author(s):  
Tristan Delcaillau ◽  
Alessandro Bismuto ◽  
Zhong Lian ◽  
Bill Morandi
Keyword(s):  
Good Yield ◽  
Functional Group ◽  
Product Formation ◽  
Single Bond ◽  
Ring Closing Metathesis ◽  
Catalytic Systems ◽  
Metathesis Reactions ◽  
New Applications ◽  
Further Development ◽  
Sulfur Bond

A nickel-catalyzed carbon-sulfur bond metathesis has been developed to access high-value thioethers. 1,2-bis(dicyclohexylphosphino)ethane (dcype) is essential to promote this highly functional group tolerant reaction. Further, synthetically challenging macrocycles could be obtained in good yield in an unusual example of ring-closing metathesis which does not involve alkene bonds. In-depth organometallic studies support a reversible Ni(0)-Ni(II) pathway to product formation. Overall, this work does not only disclose a more sustainable and more functional group tolerant alternative to previous catalytic systems based on Pd, but also presents new applications and mechanistic information which are highly relevant to the further development and application of unusual single bond metathesis reactions.

The effect of enamel moisture on tensile bond strength of composite resin using Single bond in total etch technique

2014 ◽  
Vol 10 (1) ◽  
pp. 59-68
Author(s):  
H Afshar ◽  
M Ghandehari ◽  
S Amiri ◽  
Z Mirzayi ◽  
M Pourali ◽  
...  
Keyword(s):  
Bond Strength ◽  
Composite Resin ◽  
Tensile Bond Strength ◽  
Single Bond
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