Electronic absorption spectra of some arylidene pyrazolone derivatives

Mahmoud, M. R.; El‐Kashef, Hussein; El-Hamide, R. Abd

doi:10.1016/0584-8539(81)80040-2

Search citation statements

Order By: Relevance

Paper Sections

Select...

Results1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

1984

2021

Publication Types

Select...

Article6

Relationship

Self Cite0

Independent6

Authors

Journals

Cited by 7 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An extra new band'with lower intensity is observed in the electronic spectra of compound I11 (Ar = C,H,OH(p)) at 490 nm. This band may be assigned to an intermolecular charge transfer transition (7,9,(10)(11)(12). Such an assignment is supported by the non-linear relationship obtained on plotting the absorbance of this band against the molar concentration of the compound.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, electronic spectra, and solvatochromic behaviour of 4-arylidene-1-(2,4-dinitrophenyl)-3-methyl-2-pyrazolin-5-ones

Ibrahim¹,

Youssef²

1984

Can. J. Chem.

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Synthesis, electronic spectra, and solvatochromic behaviour of 4-arylidene-1-(2,4-dinitrophenyl)-3-methyl-2-pyrazolin-5-ones

Ibrahim¹,

Youssef²

1984

Can. J. Chem.

View full text Add to dashboard Cite

Synthesis, electronic spectra and solvatochromic behaviour of 4‐arylidene‐1‐(2,4‐dinitrophenyl)‐3‐methyl‐2‐Pyrazolin‐5‐ones

Youssef

Ibrahim

1985

J. Prakt. Chem.

View full text Add to dashboard Cite

The u.v.‐visible electronic spectra of 4‐arylidene‐1‐(2, 4‐dinitrophenyl)‐3‐methyl‐2‐pyrazolin‐5‐ones (1a‐f) have been studied. The different bands observed have been assigned to the proper electronic transition. Solvatochromic behaviour of these compounds is investigated by studying their visible spectra in organic solvents of different polarity. The longer wavelength band displayed by the hydroxy derivatives is assigned to an intermolecular CT transition. The H‐bonding solvated complexes formed between ethanol or DMF and p‐hydroxy substituted derivative are investigated. Transition moment (μCT), ΔG and Kf values of these complexes have been determined.

show abstract

Spectral and acidity constants of some heterocyclic nitrogen Schiff bases

Adam

1988

Spectrochimica Acta Part A: Molecular Spectroscopy

View full text Add to dashboard Cite

Electronic absorption spectra of some arylidene pyrazolone derivatives

Cited by 7 publications

References 3 publications

Synthesis, electronic spectra, and solvatochromic behaviour of 4-arylidene-1-(2,4-dinitrophenyl)-3-methyl-2-pyrazolin-5-ones

Synthesis, electronic spectra, and solvatochromic behaviour of 4-arylidene-1-(2,4-dinitrophenyl)-3-methyl-2-pyrazolin-5-ones

Synthesis, electronic spectra and solvatochromic behaviour of 4‐arylidene‐1‐(2,4‐dinitrophenyl)‐3‐methyl‐2‐Pyrazolin‐5‐ones

Spectral and acidity constants of some heterocyclic nitrogen Schiff bases

Contact Info

Product

Resources

About