ChemInform Abstract: NUCLEAR MAGNETIC RESONANCE STUDIES OF STRUCTURE AND HINDERED ROTATION IN TERTIARY BENZYLIC METAL COMPOUNDS

1973 ◽  
Vol 4 (29) ◽  
pp. no-no
Author(s):  
GIDEON FRAENKEL ◽  
JOHN G. RUSSELL ◽  
YING-HSUEH CHEN
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Hindered Rotation ◽  
Metal Compounds ◽  
Magnetic Resonance Studies ◽  
Nuclear Magnetic

Nuclear Magnetic Resonance Studies of some Trimethyl Tin Carbamates

1972 ◽  
Vol 50 (9) ◽  
pp. 1386-1389 ◽  
Author(s):  
A. E. Lemire ◽  
J. C. Thompson
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Low Temperature ◽  
Chloroform Solution ◽  
Activation Parameters ◽  
Hindered Rotation ◽  
Magnetic Resonance Studies ◽  
Hexane Solution ◽  
Nuclear Magnetic

The low temperature n.m.r. spectra of some trimethylstannyl esters of N,N-dimethylcarbamic acid, N,N-dimethyldithiocarbamic acid, and N,N-dimethylmonothiocarbamic acid have been examined. Activation parameters for hindered rotation about the C—N bond in the trimethylstannyl ester of N,N-dimethylmonothiocarbamic acid have been determined to be: in hexane solution, Ea = 17.0 + 0.5 kcal/mol, [Formula: see text][Formula: see text][Formula: see text] in chloroform solution, Ea = 19.9 ± 0.5 kcal/mol, [Formula: see text][Formula: see text][Formula: see text]not available

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