Dynamic stereochemistry of imines and derivatives. Part 16. Conformation and stereodynamics of oxaziridines, nitrones, and imines containing the N-(1-mesitylethyl) or (1-pentamethylphenylethyl) group; a nuclear magnetic resonance and X-ray crystallographic investigation

1984 ◽  
pp. 95 ◽  
Author(s):  
Derek R. Boyd ◽  
Kenneth M. McCombe ◽  
Thomas A. Hamor ◽  
W. Brian Jennings ◽  
Valerie E. Wilson
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Crystallographic Investigation ◽  
X Ray ◽  
Dynamic Stereochemistry ◽  
Group A ◽  
Nuclear Magnetic

Multinuclear nuclear magnetic resonance and X-ray crystallographic investigation of some mixed ligand alkylisocyanide platinum(II) complexes

2005 ◽  
Vol 358 (12) ◽  
pp. 3377-3383 ◽  
Author(s):  
Phillip J. Martellaro ◽  
Stephanie K. Hurst ◽  
Ray Larson ◽  
Edwin H. Abbott ◽  
Eric S. Peterson
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Mixed Ligand ◽  
Crystallographic Investigation ◽  
X Ray ◽  
Nuclear Magnetic

Direct Characterization of Kerogen by X-ray and Solid-State13C Nuclear Magnetic Resonance Methods

2007 ◽  
Vol 21 (3) ◽  
pp. 1548-1561 ◽  
Author(s):  
S. R. Kelemen ◽  
M. Afeworki ◽  
M. L. Gorbaty ◽  
M. Sansone ◽  
P. J. Kwiatek ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
X Ray ◽  
Nuclear Magnetic

X-Ray crystallographic and 13C nuclear magnetic resonance studies of 3,4,5,6-tetrahydro-2H-1,3,4-oxadiazin-2-ones derived from ephedrine and pseudoephedrine

Tetrahedron ◽  
2001 ◽  
Vol 57 (49) ◽  
pp. 9789-9798 ◽  
Author(s):  
Shawn R Hitchcock ◽  
George P Nora ◽  
David M Casper ◽  
Michael D Squire ◽  
Christopher D Maroules ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Studies ◽  
X Ray ◽  
13C Nuclear Magnetic Resonance ◽  
Nuclear Magnetic

The crystal structure of ethyl-Z-3-amino-2-benzoyl-2-butenoate and measurement of the barrier to E,Z-isomerization

1980 ◽  
Vol 58 (17) ◽  
pp. 1821-1828 ◽  
Author(s):  
Gary D. Fallon ◽  
Bryan M. Gatehouse ◽  
Allan Pring ◽  
Ian D. Rae ◽  
Josephine A. Weigold
Keyword(s):  
Crystal Structure ◽  
Nuclear Magnetic Resonance ◽  
Hydrogen Bond ◽  
Free Energy ◽  
Magnetic Resonance ◽  
Energy Of Activation ◽  
X Ray ◽  
X Ray Crystallography ◽  
Free Energy Of Activation ◽  
Nuclear Magnetic

Ethyl-3-amino-2-benzoyl-2-butenoate crystallizes from pentane as either the E (mp 82–84 °C) or the Z-isomer (mp 95.5–96.5 °C). The E isomer is less stable, and changes spontaneously into the Z, which bas been identified by X-ray crystallography. The structure is characterised by an N–H/ester CO hydrogen bond and a very long C2—C3 bond (1.39 Å). Nuclear magnetic resonance methods have been used to measure the rate of [Formula: see text] isomerization at several temperatures, leading to the estimate that the free energy of activation at 268 K is 56 ± 8 kJ.

Sign in / Sign up

Export Citation Format

Share Document