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

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,...

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Progression in structural, morphological, photoacoustic and magnetic properties of lanthanum doped group IV elements

10.1063/5.0016643 ◽

2020 ◽

Author(s):

Deepapriya S. ◽

John D. Rodney ◽

Jerome Das S.

Keyword(s):

Magnetic Properties ◽

Group Iv ◽

Group Iv Elements

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Bonding studies of organometallic compounds of boron and the group IV elements. Part VII. Enthalpies of formation of hexamethyldisiloxane, hexamethyldisilane, and tetraethylsilane by rotating bomb calorimetry

Journal of the Chemical Society A Inorganic Physical Theoretical ◽

10.1039/j19710003095 ◽

1971 ◽

pp. 3095 ◽

Cited By ~ 14

Author(s):

B. S. Iseard ◽

J. B. Pedley ◽

J. A. Treverton

Keyword(s):

Organometallic Compounds ◽

Group Iv ◽

Enthalpies Of Formation ◽

Bomb Calorimetry ◽

Group Iv Elements ◽

Rotating Bomb Calorimetry

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

Canadian Journal of Chemistry ◽

10.1139/v67-506 ◽

1967 ◽

Vol 45 (24) ◽

pp. 3143-3151 ◽

Cited By ~ 15

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.

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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

Zeitschrift für Naturforschung B ◽

10.1515/znb-1984-0612 ◽

1984 ◽

Vol 39 (6) ◽

pp. 763-770 ◽

Cited By ~ 11

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˙⊕.

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