13C and1H NMR spectra of porphyrin dianions and their charge distribution

1988 ◽  
Vol 24 (1) ◽  
pp. 37-44 ◽  
Author(s):  
G. N. Sinyakov ◽  
A. M. Shul'ga ◽  
I. V. Filatov ◽  
G. P. Gurinovich
Keyword(s):  
Charge Distribution ◽  
Nmr Spectra ◽  
Porphyrin Dianions

scholarly journals 1H- und C-NMR-Spektren von Methoxy-substituierten Äthylenen / 1H and 13C NMR Spectra of Methoxy-substituted Ethylenes

1976 ◽  
Vol 31 (1) ◽  
pp. 35-38 ◽  
Author(s):  
M. Herberhold ◽  
G. O. Wiedersatz ◽  
C. G. Kreiter
Keyword(s):  
Charge Distribution ◽  
Vinyl Ether ◽  
13C Nmr ◽  
Nmr Spectra ◽  
13C Nmr Spectra ◽  
1H And 13C Nmr ◽  
Methyl Vinyl ◽  
Methyl Vinyl Ether ◽  
Cis And Trans ◽  
C Nmr

The charge distribution in the methoxy -substituted olefins of the series ethylene, methyl vinyl ether, 1,1-dimethoxyethylene, cis- and trans-dimethoxyethylene, tetramethoxyethylene, is discussed on the basis of the 1H and 13C NMR spectra

Communications: Ring Equivalence and Charge Distribution in Triphenylcarbonium Ion from NMR Spectra

1959 ◽  
Vol 24 (10) ◽  
pp. 1616-1617 ◽  
Author(s):  
Ronald Dehl ◽  
Wyman Vaughan ◽  
R Berry
Keyword(s):  
Charge Distribution ◽  
Nmr Spectra

Charge distribution and 13C NMR spectra of cyanine dyes with bridging groupings in the chromophore

1988 ◽  
Vol 23 (6) ◽  
pp. 635-639
Author(s):  
Yu. L. Slominskii ◽  
S. V. Popov ◽  
I. V. Repyakh ◽  
M. I. Povolotskii ◽  
A. D. Kachkovskii ◽  
...  
Keyword(s):  
Charge Distribution ◽  
13C Nmr ◽  
Nmr Spectra ◽  
Cyanine Dyes ◽  
13C Nmr Spectra

Calculation of chemical shifts in13C NMR spectra on the basis of the electron charge distribution in Zn-octaethylchlorine and its π-dianions

1993 ◽  
Vol 59 (1-2) ◽  
pp. 563-566
Author(s):  
I. V. Filatov ◽  
A. M. Shulga ◽  
G. N. Sinyakov ◽  
G. P. Gurinovich ◽  
K. Dzilinski
Keyword(s):  
Charge Distribution ◽  
Nmr Spectra ◽  
Chemical Shifts ◽  
Electron Charge ◽  
Electron Charge Distribution

1H NMR spectra of porphyrin dianions

1978 ◽  
Vol 28 (3) ◽  
pp. 350-353
Author(s):  
G. N. Sinyakov ◽  
A. M. Shul'ga ◽  
G. P. Gurinovich
Keyword(s):  
1H Nmr ◽  
Nmr Spectra ◽  
1H Nmr Spectra ◽  
Porphyrin Dianions

Study of charge transfer in FeTi

1983 ◽  
Vol 41 ◽  
pp. 296-297
Author(s):  
J. Taft∅
Keyword(s):  
Charge Transfer ◽  
Charge Distribution ◽  
Electron Scattering ◽  
Periodic System ◽  
Electron Distribution ◽  
Scattering Amplitude ◽  
Transition Elements ◽  
Hartree Fock ◽  
Cscl Structure ◽  
The Right

It is well known that for reflections corresponding to large interplanar spacings (i.e., sin θ/λ small), the electron scattering amplitude, f, is sensitive to the ionicity and to the charge distribution around the atoms. We have used this in order to obtain information about the charge distribution in FeTi, which is a candidate for storage of hydrogen. Our goal is to study the changes in electron distribution in the presence of hydrogen, and also the ionicity of hydrogen in metals, but so far our study has been limited to pure FeTi. FeTi has the CsCl structure and thus Fe and Ti scatter with a phase difference of π into the 100-ref lections. Because Fe (Z = 26) is higher in the periodic system than Ti (Z = 22), an immediate “guess” would be that Fe has a larger scattering amplitude than Ti. However, relativistic Hartree-Fock calculations show that the opposite is the case for the 100-reflection. An explanation for this may be sought in the stronger localization of the d-electrons of the first row transition elements when moving to the right in the periodic table. The tabulated difference between fTi (100) and ffe (100) is small, however, and based on the values of the scattering amplitude for isolated atoms, the kinematical intensity of the 100-reflection is only 5.10-4 of the intensity of the 200-reflection.

NMR spectra and relaxation in incommensurate systems in the presence of a devil's staircase

1985 ◽  
Vol 46 (7) ◽  
pp. 1205-1209 ◽  
Author(s):  
R. Blinc ◽  
S. Žumer ◽  
D.C. Ailion ◽  
J. Nicponski
Keyword(s):  
Nmr Spectra ◽  
Devil's Staircase ◽  
Devil’S Staircase

Charge distribution on dust particles of space plasma

2003 ◽  
Vol 9 (4) ◽  
pp. 67-72 ◽  
Author(s):  
Yu.O. Klymenko ◽  
◽  
О.К. Cheremnykh ◽  
Keyword(s):  
Charge Distribution ◽  
Space Plasma ◽  
Dust Particles
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