The synthesis and properties of tris(dithioacetylacetonato) complexes of iron(III), ruthenium(III), and osmium(III)

1970 ◽  
Vol 23 (9) ◽  
pp. 1721 ◽  
Author(s):  
GA Heath ◽  
RL Martin
Keyword(s):  
Charge Transfer ◽  
Absorption Spectra ◽  
Electronic Absorption ◽  
Electronic Absorption Spectra ◽  
Magnetic Susceptibilities ◽  
Electron Reduction

The syntheses of the iron(111), ruthenium(111), and osmium(111) complexes of dithioacetylacetone are described. The tris chelates are neutral low-spin (S = 1/2)monomers. Polarography in acetone reveals a ready one-electron reduction for each complex. Infrared and e.s.r. spectra are reported. The magnetic susceptibilities have been measured as a function of temperature. The electronic absorption spectra are compared with those of the related cobalt(111) group complexes, and some tentative assignments of charge transfer bands are provided.

Optical Spectroscopy of Mixed Metamagnetic FexCo1-xCl2 Crystals

1980 ◽  
Vol 35 (10) ◽  
pp. 1013-1019 ◽  
Author(s):  
Friedrich Seitz ◽  
Terence E. Wood ◽  
Peter Day
Keyword(s):  
Charge Transfer ◽  
Temperature Dependence ◽  
Single Crystals ◽  
Absorption Spectra ◽  
Optical Spectroscopy ◽  
Electronic Absorption ◽  
Electronic Absorption Spectra ◽  
Broad Band ◽  
Mixed Crystals ◽  
Magnetic Exchange

Abstract Electronic absorption spectra are reported for single crystals of composition FexCo1-xCl2 as a function of temperature from 300 K to 4 K. A broad band at 436 nm is assigned to Fe (II) → Co (II) charge transfer and the temperature dependence of its intensity is related to the magnetic exchange between the ions. The 2T1g(2H) excitation of Co (II) in the mixed crystals has an unusual temperature dependence which correlates with the Néel temperature.

Spectra of the 1:1 and 3:1 solid complexes of coronene-TCNQ

1977 ◽  
Vol 55 (21) ◽  
pp. 3712-3716 ◽  
Author(s):  
Kim Doan Truong ◽  
André D. Bandrauk
Keyword(s):  
Charge Transfer ◽  
Absorption Spectra ◽  
Electronic Absorption ◽  
Ground State ◽  
Electronic Absorption Spectra ◽  
Charge Transfer Band ◽  
Out Of Plane ◽  
The Individual ◽  
A Charge ◽  
Solid Complexes

Two new solid TCNQ complexes have been isolated, coronene–TCNQ 1:1 and 3:1. The infrared and electronic absorption spectra are presented for the two different stoichiometries. From these spectra we infer that the complexes are covalent in the ground state with a charge transfer band appearing at 730 nm. The out of plane vibrations of the individual molecules are noticeably perturbed upon complexation.

Polarized electronic absorption spectra of crystalline charge transfer autocomplexes

1979 ◽  
Vol 35 (11) ◽  
pp. 1229-1234
Author(s):  
A.J. Mālmanis ◽  
Ya.A. Eiduss ◽  
J.F. Freimanis ◽  
J.J. Drēǧeris
Keyword(s):  
Charge Transfer ◽  
Absorption Spectra ◽  
Electronic Absorption ◽  
Electronic Absorption Spectra

Spectroscopic Studies of Some Drugs of Toxicological Interest. Part II. p-Aminobenzoic Acid Drugs

1969 ◽  
Vol 23 (3) ◽  
pp. 254-256 ◽  
Author(s):  
A. Mustafa ◽  
R. Abu-Eittah ◽  
S. Elgendi
Keyword(s):  
Charge Transfer ◽  
Benzoic Acid ◽  
Absorption Spectra ◽  
Electronic Absorption ◽  
Intramolecular Charge Transfer ◽  
Electronic Absorption Spectra ◽  
Spectroscopic Studies ◽  
Aminobenzoic Acid ◽  
Long Wavelength ◽  
Amino Benzoic Acid

The electronic absorption spectra of some drugs derived from p-amino benzoic acid were studied. The effect of the substituent on the position of band maxima and intensity has been rationalized. Long wavelength energies have been found to agree well with calculated energies of the intramolecular charge transfer bands.

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