The effects of solvents and structure on the electronic absorption spectra of the isomeric pyridine carboxylic acid N-oxides
Uticaj rastvarača i strukture na elektronske absorpcione spektre izomernih piridin-karboksilnih kiselina N-oksida
2013
Аутори
Drmanić, Saša Ž.Nikolić, Jasmina B.
Marinković, Aleksandar D.
Šekularac, Gavrilo
Jovanović, Bratislav Ž.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The ultraviolet absorption spectra of the carboxyl group of three isomeric pyridine carboxylic acids N-oxides (picolinic acid N-oxide, nicotinic acid N-oxide and isonicotinic acid N-oxide) were determined in fourteen solvents in the wavelength range from 200 to 400 nm. The position of the absorption maxima (λmax) of the examined acids showed that the ultraviolet absorption maximum wavelengths of picolinic acid N-oxide are the shortest, and those of isonicotinic acid N-oxide acid are the longest. In order to analyze the solvent effect on the obtained absorption spectra, the ultraviolet absorption frequencies of the electronic transitions in the carboxylic group of the examined acids were correlated using a total solvatochromic equation of the form Vmax = V0 + + Sπ*+ aα+ bβ, where Vmax is the absorption frequency (1/λmax), π*is a measure of the solvent polarity, β represents the scale of solvent hydrogen bond acceptor basicities and α represents the scale of solvent hydrogen bond donor ...acidities. The correlation of the spectroscopic data was carried out by means of multiple linear regression analysis. The solvent effects on the ultraviolet absorption maximums of the examined acids were discussed.
UV apsorpcioni spektri pikolinske kiseline N-oksida, nikotinske kiseline N-oksida i izonikotinske kiseline N-oksida određeni su u 14 protičnih i aprotičnih rastvarača u opsegu od 200-400 nm. Položaji maksimuma apsorpcije bili su najniži za pikolinsku kiseline N-oksid, a najviši za izonikotinsku kiseline N-oksid. Da bi se analizirao uticaj ratvarača, apsorpcione frekvence su korelisane Kamlet-Taftovom jednačinom, kojom se uticaj polarnosti/polarizabilnosti, proton-donorskog i proton-akceptorskog dejstva rastvarača može kvantitativno izraziti.
Кључне речи:
picolinic acid N-oxide / nicotinic acid N-oxide / isonicotinic acid N-oxide / ultraviolet absorption maximum / protic and aprotic solvents / solvatochromic effects / pikolinska kiselina N-oksid / nikotinska kiselina N-oksid / izonikotinska kiselina N-oksid / apsorpcioni spektri / protični i aprotični ratvarači / solvatohromni efektiИзвор:
Chemical Industry and Chemical Engineering Quarterly / CICEQ, 2013, 19, 3, 385-388Издавач:
- Association of the Chemical Engineers of Serbia
Финансирање / пројекти:
- Проучавање синтезе, структуре и активности органских једињења природног и синтетског порекла (RS-MESTD-Basic Research (BR or ON)-172013)
DOI: 10.2298/CICEQ120326073D
ISSN: 1451-9372
WoS: 000325912800008
Scopus: 2-s2.0-84884966285
Институција/група
IHTMTY - JOUR AU - Drmanić, Saša Ž. AU - Nikolić, Jasmina B. AU - Marinković, Aleksandar D. AU - Šekularac, Gavrilo AU - Jovanović, Bratislav Ž. PY - 2013 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1159 AB - The ultraviolet absorption spectra of the carboxyl group of three isomeric pyridine carboxylic acids N-oxides (picolinic acid N-oxide, nicotinic acid N-oxide and isonicotinic acid N-oxide) were determined in fourteen solvents in the wavelength range from 200 to 400 nm. The position of the absorption maxima (λmax) of the examined acids showed that the ultraviolet absorption maximum wavelengths of picolinic acid N-oxide are the shortest, and those of isonicotinic acid N-oxide acid are the longest. In order to analyze the solvent effect on the obtained absorption spectra, the ultraviolet absorption frequencies of the electronic transitions in the carboxylic group of the examined acids were correlated using a total solvatochromic equation of the form Vmax = V0 + + Sπ*+ aα+ bβ, where Vmax is the absorption frequency (1/λmax), π*is a measure of the solvent polarity, β represents the scale of solvent hydrogen bond acceptor basicities and α represents the scale of solvent hydrogen bond donor acidities. The correlation of the spectroscopic data was carried out by means of multiple linear regression analysis. The solvent effects on the ultraviolet absorption maximums of the examined acids were discussed. AB - UV apsorpcioni spektri pikolinske kiseline N-oksida, nikotinske kiseline N-oksida i izonikotinske kiseline N-oksida određeni su u 14 protičnih i aprotičnih rastvarača u opsegu od 200-400 nm. Položaji maksimuma apsorpcije bili su najniži za pikolinsku kiseline N-oksid, a najviši za izonikotinsku kiseline N-oksid. Da bi se analizirao uticaj ratvarača, apsorpcione frekvence su korelisane Kamlet-Taftovom jednačinom, kojom se uticaj polarnosti/polarizabilnosti, proton-donorskog i proton-akceptorskog dejstva rastvarača može kvantitativno izraziti. PB - Association of the Chemical Engineers of Serbia T2 - Chemical Industry and Chemical Engineering Quarterly / CICEQ T1 - The effects of solvents and structure on the electronic absorption spectra of the isomeric pyridine carboxylic acid N-oxides T1 - Uticaj rastvarača i strukture na elektronske absorpcione spektre izomernih piridin-karboksilnih kiselina N-oksida VL - 19 IS - 3 SP - 385 EP - 388 DO - 10.2298/CICEQ120326073D ER -
@article{ author = "Drmanić, Saša Ž. and Nikolić, Jasmina B. and Marinković, Aleksandar D. and Šekularac, Gavrilo and Jovanović, Bratislav Ž.", year = "2013", abstract = "The ultraviolet absorption spectra of the carboxyl group of three isomeric pyridine carboxylic acids N-oxides (picolinic acid N-oxide, nicotinic acid N-oxide and isonicotinic acid N-oxide) were determined in fourteen solvents in the wavelength range from 200 to 400 nm. The position of the absorption maxima (λmax) of the examined acids showed that the ultraviolet absorption maximum wavelengths of picolinic acid N-oxide are the shortest, and those of isonicotinic acid N-oxide acid are the longest. In order to analyze the solvent effect on the obtained absorption spectra, the ultraviolet absorption frequencies of the electronic transitions in the carboxylic group of the examined acids were correlated using a total solvatochromic equation of the form Vmax = V0 + + Sπ*+ aα+ bβ, where Vmax is the absorption frequency (1/λmax), π*is a measure of the solvent polarity, β represents the scale of solvent hydrogen bond acceptor basicities and α represents the scale of solvent hydrogen bond donor acidities. The correlation of the spectroscopic data was carried out by means of multiple linear regression analysis. The solvent effects on the ultraviolet absorption maximums of the examined acids were discussed., UV apsorpcioni spektri pikolinske kiseline N-oksida, nikotinske kiseline N-oksida i izonikotinske kiseline N-oksida određeni su u 14 protičnih i aprotičnih rastvarača u opsegu od 200-400 nm. Položaji maksimuma apsorpcije bili su najniži za pikolinsku kiseline N-oksid, a najviši za izonikotinsku kiseline N-oksid. Da bi se analizirao uticaj ratvarača, apsorpcione frekvence su korelisane Kamlet-Taftovom jednačinom, kojom se uticaj polarnosti/polarizabilnosti, proton-donorskog i proton-akceptorskog dejstva rastvarača može kvantitativno izraziti.", publisher = "Association of the Chemical Engineers of Serbia", journal = "Chemical Industry and Chemical Engineering Quarterly / CICEQ", title = "The effects of solvents and structure on the electronic absorption spectra of the isomeric pyridine carboxylic acid N-oxides, Uticaj rastvarača i strukture na elektronske absorpcione spektre izomernih piridin-karboksilnih kiselina N-oksida", volume = "19", number = "3", pages = "385-388", doi = "10.2298/CICEQ120326073D" }
Drmanić, S. Ž., Nikolić, J. B., Marinković, A. D., Šekularac, G.,& Jovanović, B. Ž.. (2013). The effects of solvents and structure on the electronic absorption spectra of the isomeric pyridine carboxylic acid N-oxides. in Chemical Industry and Chemical Engineering Quarterly / CICEQ Association of the Chemical Engineers of Serbia., 19(3), 385-388. https://doi.org/10.2298/CICEQ120326073D
Drmanić SŽ, Nikolić JB, Marinković AD, Šekularac G, Jovanović BŽ. The effects of solvents and structure on the electronic absorption spectra of the isomeric pyridine carboxylic acid N-oxides. in Chemical Industry and Chemical Engineering Quarterly / CICEQ. 2013;19(3):385-388. doi:10.2298/CICEQ120326073D .
Drmanić, Saša Ž., Nikolić, Jasmina B., Marinković, Aleksandar D., Šekularac, Gavrilo, Jovanović, Bratislav Ž., "The effects of solvents and structure on the electronic absorption spectra of the isomeric pyridine carboxylic acid N-oxides" in Chemical Industry and Chemical Engineering Quarterly / CICEQ, 19, no. 3 (2013):385-388, https://doi.org/10.2298/CICEQ120326073D . .