Ionization potentials of non-metal monosulfides. Conjugation in radical cations containing Group IV elements

1990 ◽  
Vol 49 (1) ◽  
pp. 26-32 ◽  
Author(s):  
A. N. Egorochkin ◽  
M. G. Voronkov ◽  
S. E. Skobeleva ◽  
T. G. Mushtina ◽  
O. V. Zderenova
Keyword(s):  
Radical Cations ◽  
Group Iv ◽  
Ionization Potentials ◽  
Group Iv Elements

Melting and Polymorphism at High Pressures in Some Group IV Elements and III-V Compounds with the Diamond/Zincblende Structure

1963 ◽  
Vol 130 (2) ◽  
pp. 540-547 ◽  
Author(s):  
A. Jayaraman ◽  
W. Klement ◽  
G. C. Kennedy
Keyword(s):  
High Pressures ◽  
Group Iv ◽  
Group Iv Elements

scholarly journals Creation of pure non-crystalline diamond nanostructures via room temperature ion irradiation and subsequent thermal annealing

2021 ◽  
Author(s):  
Federico Picollo ◽  
Alfio Battiato ◽  
Federico Bosia ◽  
Fabio Scaffidi Muta ◽  
Paolo Olivero ◽  
...  
Keyword(s):  
Thermal Annealing ◽  
Room Temperature ◽  
Ion Irradiation ◽  
Group Iv ◽  
Chemical Bonds ◽  
Group Iv Elements ◽  
Silicon And Germanium ◽  
Subsequent Thermal Annealing

Carbon exhibits a remarkable range of structural forms, due to the availability of sp3, sp2 and sp1 chemical bonds. Contrarily to other group IV elements such as silicon and germanium,...

Correlations of substituent effects on proton and fluorine chemical shifts with inverse ionization potentials

1967 ◽  
Vol 45 (24) ◽  
pp. 3143-3151 ◽  
Author(s):  
T. Schaefer ◽  
F. Hruska ◽  
H. M. Hutton
Keyword(s):  
Electric Fields ◽  
Chemical Shifts ◽  
Substituent Effects ◽  
Group Iv ◽  
The Other ◽  
Ionization Potentials ◽  
Time Dependent ◽  
Practical Application ◽  
Methyl Proton ◽  
Proton Chemical Shifts

The fluorine and proton chemical shifts in some geminally disubstituted vinylidene fluorides and ethylenes are discussed. For these compounds, at least, there are difficulties with an interpretation based on intramolecular time-dependent electric fields. On the other hand, the shifts correlate with the inverse ionization potentials of the substituents, indicating a paramagnetic effect arising from the second term in Ramsey's expression. It is suggested that the effect operates via the bonds and not across space. Methyl proton shifts in a series of substituted methyl compounds of group IV, V, and VI elements show similar correlations. A practical application of the correlation to spectral analysis problems is given.

Radikalionen, 61 [1, 2]Dialkylamino-substituierte Acetylene und Allene:Ionisation, Oxidation und AlCl3-katalysierte Wasserstoffübertragung / Radical Ions, 61 [1, 2]Dialkylamino-substituted Acetylenes and Allenes:Ionisation, Oxidation and AlCl3-Catalyzed Hydrogen Transfer

1984 ◽  
Vol 39 (6) ◽  
pp. 763-770 ◽  
Author(s):  
Hans Bock ◽  
Wolfgang Kaim ◽  
Mitsuo Kira ◽  
Louis Réné ◽  
Heinz-Günther Viehe
Keyword(s):  
Radical Cation ◽  
Hydrogen Transfer ◽  
Radical Cations ◽  
Esr Spectra ◽  
Ionization Potentials ◽  
Radical Ions ◽  
Substituted Acetylenes

AbstractThe photoelectron (PE) spectra of bis(dialkylamino) acetylenes R2N-C≡C-NR2 and of tetrakis(dialkylamino) allenes (R2N)2C=C=C(NR2)2 with R = CH3, C2H5 exhibit characteristic ionization patterns which are assigned to π radical cation states of the two molecular halves twisted against each other. The low first ionization potentials between 7.0 eV and 7.7 eV stimu­lated attempts to oxidize using AlCl3 in H2CCl2 or D2CCl2. The hyperfine structured ESR spectra observed can be unequivocally assigned to the ethylene radical cations R2N-HC=CH -NR2˙⊕ which are formed from the obviously non-persistent species R2N-C≡C-NR2˙⊕ via a hydrogen transfer. During the oxidation of the dialkylamino-substituted allenes no paramagnetic intermedi­ates could be detected, presumably due to a rapid dimerisation of the allene radical cation (R2N)2C=C=C(NR2)2˙⊕.

Pentafluorophenyl organometallic compounds of group IV elements

1965 ◽  
Vol 4 (6) ◽  
pp. 446-454 ◽  
Author(s):  
Christ Tamborski ◽  
Edward J. Soloski ◽  
Stanley M. Dec
Keyword(s):  
Organometallic Compounds ◽  
Group Iv ◽  
Group Iv Elements

New insecticides by replacement of carbon by other Group IV elements

1990 ◽  
Vol 29 (2) ◽  
pp. 215-225 ◽  
Author(s):  
Scott McN. Sieburth ◽  
Sarah Y. Lin ◽  
Thomas G. Cullen
Keyword(s):  
Group Iv ◽  
Group Iv Elements
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