Chemical and spectroscopic studies in metal β-diketonates. IX. A novel intermolecular charge-transfer system involving metal acetylacetonate (donor) and iodine (acceptor)

1970 ◽  
Vol 23 (2) ◽  
pp. 269 ◽  
Author(s):  
PR Singh ◽  
R Sahai
Keyword(s):  
Charge Transfer ◽  
Equilibrium Constants ◽  
Spectrophotometric Study ◽  
Spectroscopic Studies ◽  
Charge Transfer Complexes ◽  
Transfer System ◽  
Metal Acetylacetonates ◽  
Iodine Complex ◽  
Straight Line ◽  
Metal Acetylacetonate

A spectrophotometric study of 1 : 1 charge-transfer complexes derived from five metal acetylacetonates (donor) and iodine (acceptor) has been carried out. Iomzation potential of each metal acetylacetonate and the equilibrium constants for the formation of the chelate-iodine complex have been evaluated. The plot of ionization potential of donors against hvCt values gave a straight line.

scholarly journals Spectroscopic Studies of Charge Transfer Complexes. VII. Acrylonitrile and Iodine, Iodine Monochloride and Iodine Monobromide.

1963 ◽  
Vol 17 ◽  
pp. 1179-1180 ◽  
Author(s):  
Peter Klæboe ◽  
Einar Jacobsen ◽  
Eeva-Liisa Syväoja ◽  
Armi Alivaara ◽  
M. Trætteberg
Keyword(s):  
Charge Transfer ◽  
Spectroscopic Studies ◽  
Charge Transfer Complexes ◽  
Iodine Monochloride ◽  
Iodine Monobromide

Mécanisme d'apparition de la coloration jaunâtre dans les poudres de sulfate stanneux

1977 ◽  
Vol 55 (19) ◽  
pp. 3425-3428
Author(s):  
G. Verville
Keyword(s):  
Charge Transfer ◽  
Spectrophotometric Study ◽  
Charge Transfer Complexes ◽  
Yellow Coloration ◽  
Hydrolysis Of

A spectrophotometric study of stannous sulphate powders has enabled the mechanism of the yellow coloration of these powders to be defined. It is shown that the yellow coloration results from the formation of charge transfer complexes of the type 1Sn(II)–4Sn(IV) in a film of adsorbed and acidified water which surrounds some stannous sulphate particles. The charge transfer complexes are formed by the adsorption of Sn2+•xH2O or SnHSO4+ ions onto the surface of colloidal Sn(OH)4•xH2O that is formed by the oxidation and hydrolysis of the stannous sulphate.

Dramatic luminescence signal from a Co(ii)-based metal–organic compound due to the construction of charge-transfer bands with Al3+ and Fe3+ ions in water: steady-state and time-resolved spectroscopic studies

2020 ◽  
Vol 44 (11) ◽  
pp. 4376-4385 ◽  
Author(s):  
Pooja Daga ◽  
Prakash Majee ◽  
Debal Kanti Singha ◽  
Priyanka Manna ◽  
Sayani Hui ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Steady State ◽  
Organic Compound ◽  
Spectroscopic Studies ◽  
Charge Transfer Complexes ◽  
Time Resolved ◽  
Luminescence Signal ◽  
Turn On ◽  
Metal Organic

A Co(ii)-based metal–organic compound exhibits luminescence turn-on by Al3+ and quenching by Fe3+ due to the formation of charge-transfer complexes/adducts.

Far infrared spectra of charge-transfer complexes between iodine and substituted pyridines

1967 ◽  
Vol 297 (1451) ◽  
pp. 440-448 ◽  
Keyword(s):  
Charge Transfer ◽  
Infrared Spectra ◽  
Equilibrium Constants ◽  
Far Infrared ◽  
Charge Transfer Complexes ◽  
Absorption Bands ◽  
Substituted Pyridines ◽  
Stretching Vibration ◽  
Far Infrared Spectra ◽  
Electronic And Steric Effects

Far infrared spectra of charge-transfer complexes between iodine and substituted pyridines, dissolved in cyclohexane, have been measured in the region 20 to 200 cm -1 . Bands have been assigned to the modified iodine molecule stretching vibration near 180 cm -1 , and to the stretching of the intermolecular bond in the range 65 to 95 cm -1 . The shifts of the vibration frequencies, and force constants calculated using a simple valency force field, have been discussed in relation to the mass, electronic and steric effects of substituent groups. Equilibrium constants for the formation of the complex have been determined. From the intensities of the absorption bands, further evidence has been found for a vibronic interaction, leading to a delocalization of the transition moment in the vibrations of the complexes, and to an enhancement of the intensity of absorption.

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