scholarly journals TEMPERATURE-DEPENDENT 11B NMR STUDIES OF Na2O·B2O3 GLASSES

1990 ◽  
Vol 39 (5) ◽  
pp. 714
Author(s):  
XU SHU ◽  
WU XUE-WEN
Keyword(s):  
Temperature Dependent ◽  
Nmr Studies ◽  
11B Nmr

scholarly journals TEMPERATURE-DEPENDENT 11B NMR STUDIES OF B2O3 GLASS

1988 ◽  
Vol 37 (11) ◽  
pp. 1866
Author(s):  
XU SHU ◽  
PAN LIN-ZHANG ◽  
TIAN FEN ◽  
WU XUE-WEN
Keyword(s):  
Temperature Dependent ◽  
Nmr Studies ◽  
11B Nmr ◽  
B2o3 Glass

ChemInform Abstract: Pressure- and Temperature-Dependent 1H NMR Studies of N,N-Dimethylpiperazine Ring Inversion in the Gas Phase.

ChemInform ◽  
1989 ◽  
Vol 20 (35) ◽  
Author(s):  
C. B. LEMASTER ◽  
C. L. LEMASTER ◽  
C. SUAREZ ◽  
M. TAFAZZOLI ◽  
N. S. TRUE
Keyword(s):  
Gas Phase ◽  
1H Nmr ◽  
Temperature Dependent ◽  
Nmr Studies ◽  
Ring Inversion

The ring inversion of gaseous N-methylpiperazine. Pressure and temperature dependent 1H NMR studies

1994 ◽  
Vol 317 (1-2) ◽  
pp. 137-145 ◽  
Author(s):  
Mohsen Tafazzoli ◽  
Cristina Suarez ◽  
Nancy S. True ◽  
Clifford B. LeMaster ◽  
Carol L. LeMaster
Keyword(s):  
1H Nmr ◽  
Temperature Dependent ◽  
Nmr Studies ◽  
Ring Inversion

Boron trihalide adducts of 1,1-bis(piperidinyl)ethylene. 13C and 11B nmr studies of a model system for β-carbon donation in enamine adducts

1981 ◽  
Vol 59 (8) ◽  
pp. 1284-1289 ◽  
Author(s):  
J. Stephen Hartman ◽  
Eric C. Kelusky
Keyword(s):  
Model System ◽  
Nmr Studies ◽  
11B Nmr ◽  
Covalent Adducts ◽  
Peak Widths ◽  
C Nmr

1,1-Bis(piperidinyl)ethylene coordinates to the boron trihalides through the CH2 carbon, but the covalent adducts D.BX3 undergo rearrangement to give predominantly the ionic adducts D2BX2+.BX4−. Striking variations in 11B and 13C nmr peak widths support our proposed structures. The disappearance of peaks due to excessive broadening can be misleading in the interpretation of such systems.

Pressure- and temperature-dependent proton NMR studies of N-methylmorpholine ring inversion

1990 ◽  
Vol 94 (9) ◽  
pp. 3461-3466 ◽  
Author(s):  
Clifford B. LeMaster ◽  
Carole L. LeMaster ◽  
Mohsen. Tafazzoli ◽  
Cristina. Suarez ◽  
Nancy S. True
Keyword(s):  
Proton Nmr ◽  
Temperature Dependent ◽  
Nmr Studies ◽  
Ring Inversion
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