Vibrational circular dichroism theory: formulation defining magnetic dipole atomic polar tensors and vibrational nuclear magnetic shielding tensors

1987 ◽  
Vol 134 (3) ◽  
pp. 225-232 ◽  
Author(s):  
Laurence A Nafie ◽  
Teresa B Freedman
Keyword(s):  
Circular Dichroism ◽  
Magnetic Dipole ◽  
Vibrational Circular Dichroism ◽  
Magnetic Shielding ◽  
Theory Formulation ◽  
Shielding Tensors ◽  
Nuclear Magnetic Shielding Tensors ◽  
Circular Dichroïsm ◽  
Nuclear Magnetic

scholarly journals Piscicartone, a Rotenoid From Piscidia carthagenensis

2019 ◽  
Vol 14 (5) ◽  
pp. 1934578X1984979
Author(s):  
Alfredo R. Ortega ◽  
Nury Pérez-Hernández ◽  
Pedro Joseph-Nathan
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fourier Transform ◽  
Circular Dichroism ◽  
Magnetic Resonance ◽  
Discrete Fourier Transform ◽  
Absolute Configuration ◽  
Vibrational Circular Dichroism ◽  
Magnetic Resonance Studies ◽  
Circular Dichroïsm ◽  
Nuclear Magnetic

The bark of the roots of Piscidia carthagenensis afforded the known insecticides rotenone (1) and millettone (2), as well as the new rotenoid piscicartone (3). The structure of 3 followed from nuclear magnetic resonance studies, while its absolute configuration (AC) was determined by vibrational circular dichroism (VCD) measurements in comparison with discrete Fourier transform B3LYP/DGDZVPcalculated spectra using the Compare VOA software. In addition, the AC of 1 and 2 was verified using the same VCD methodology.

Nitrogen-15 nuclear magnetic shielding tensors in nitrite and nitrate ion. Experimental and theoretical determinations

1994 ◽  
Vol 219 (5-6) ◽  
pp. 491-496 ◽  
Author(s):  
Patrick J. Barrie ◽  
Christopher J. Groombridge ◽  
Joan Mason ◽  
Elaine A. Moore
Keyword(s):  
Magnetic Shielding ◽  
Nitrate Ion ◽  
Shielding Tensors ◽  
Nuclear Magnetic Shielding Tensors ◽  
Nuclear Magnetic
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