Determination of the transition moment and the geometry of tryptamine by rotationally resolved electronic spectroscopy

1986 ◽  
Vol 90 (21) ◽  
pp. 4921-4923 ◽  
Author(s):  
Laura A. Philips ◽  
Donald H. Levy
Keyword(s):  
Electronic Spectroscopy ◽  
Transition Moment

Determination of the oxidation state of manganese in lepidolite by X-ray photoelectron spectroscopy

Clay Minerals ◽  
1982 ◽  
Vol 17 (4) ◽  
pp. 477-481 ◽  
Author(s):  
S. Evans ◽  
E. Raftery
Keyword(s):  
Oxidation State ◽  
Photoelectron Spectroscopy ◽  
Electronic Spectroscopy ◽  
Binding Energies ◽  
Core Electron ◽  
X Ray ◽  
Occasional Occurrence ◽  
The Subject ◽  
Electron Binding Energies

It is usually assumed that the oxidation state of the small proportion of Mn sometimes present in micas is +2, although there is evidence from electronic spectroscopy (Burns, 1970) for at least the occasional occurrence of Mn(III) in manganophyllite. We describe here X-ray photoelectron spectroscopic (XPS) measurements on the Mn in a Norwegian lepidolite which was the subject of a concurrent structural study by X-ray photoelectron diffraction (Evans & Raftery, 1982). To establish the Mn oxidation state we have compared the Mn2p core-electron binding energies (BE), the Mn2P3/2-O ls BE differences, and the Mn2p XPS peak profiles from the four common oxides of manganese (MnO, Mn3O4, Mn2O3 and MnO2) with those from the lepidolite. A re-examination of these oxides was undertaken because the agreement between reports in the literature was unsatisfactory, and uncertainty existed concerning the integrity of some of the surfaces previously examined.

Determination of dielectric axes and transition moment directions in β-Ga2O3 from the polarization dependence of vibrational spectra

2020 ◽  
Vol 127 (5) ◽  
pp. 055702 ◽  
Author(s):  
Amanda Portoff ◽  
Andrew Venzie ◽  
Michael Stavola ◽  
W. Beall Fowler ◽  
Stephen J. Pearton
Keyword(s):  
Vibrational Spectra ◽  
Polarization Dependence ◽  
Transition Moment

scholarly journals Synthesis, Spectral and Magnetic Studies of Newly Mixed-Ligand Complexes of 4-Formyl-Acetanilide Thiosemicarbazone and 3,4-Dihydrocinnamic Acid with Some Metal Ions

2010 ◽  
Vol 7 (s1) ◽  
pp. S594-S600 ◽  
Author(s):  
Shayma A. Shaker
Keyword(s):  
Metal Ions ◽  
Magnetic Measurements ◽  
Electronic Spectroscopy ◽  
Bidentate Ligand ◽  
Magnetic Studies ◽  
Tetrahedral Geometry ◽  
H Nmr ◽  
Analysis Determination ◽  
Solid Complexes

New complexes with thiosemicarbazone derivative and 3, 4-dihydrocinnamic acid were prepared and characterized by elemental analysis, determination of metal, IR,1H NMR, electronic spectroscopy and magnetic measurements. The thiosemicarbazone derivative forms bidentate ligand complexes of the general formula, [M(Thz)(Caf)] where Thz = 4-formyl- acetanilide thiosemicarbazone, Caf = 3,4-dihydrocinnamic acid and M=Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+and Pb2+. The IR and1H NMR spectra indicates that the (Thz) was coordinated with the metal ions through the N and S atoms and the (Caf) was negatively charged bidentat ligand and was coordinated with the metal ions through the two O atoms. Electronic spectra and magnetic susceptibility measurements of the solid complexes indicates the tetrahedral geometry around the Mn2+, Fe2+, Co2+, Ni2+, Zn2+, Cd2+and irregular tetrahedral geometry around Pb2+ion while the Cu2+complex has squar planer geometry.

Determination of Excited-State Energies and Dynamics in the B Band of the Bacterial Reaction Center with 2D Electronic Spectroscopy

2012 ◽  
Vol 3 (17) ◽  
pp. 2487-2492 ◽  
Author(s):  
Gabriela S. Schlau-Cohen ◽  
Eleonora De Re ◽  
Richard J. Cogdell ◽  
Graham R. Fleming
Keyword(s):  
Excited State ◽  
Reaction Center ◽  
Electronic Spectroscopy ◽  
Bacterial Reaction Center
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