Zobrazeno 1 - 10
of 105
pro vyhledávání: '"B.P. Asthana"'
Publikováno v:
Journal of Raman Spectroscopy. 33:720-725
Raman spectra of terephthalidine-bis-heptylaniline (TB7A) were recorded in the region 1125–1225 cm−1 from room temperature to 10 K at 18 different temperatures. The splitting of the ∼1165 cm−1 band, and the variation of the ratio of integrate
Hydrogen-Bonded Pyridine−Water Complexes Studied by Density Functional Theory and Raman Spectroscopy
Publikováno v:
The Journal of Physical Chemistry A. 105:9983-9989
Density functional theory (DFT) at the B3LYP/6-31++G(d,p) level was employed to obtain the optimized geometries and vibrational spectra of several pyridine(Py)−water(W) complexes with stoichiometric ratios ranging from 2:1 (Py2W) to 1:3 (PyW3). The
Publikováno v:
Chemical Physics Letters. 326:123-128
The technique of scanning multichannel Raman difference spectroscopy was used to determine the precise wavenumber shifts of the ν1 (C–H)/(C–D) and ν2 (CN) stretching modes in (CH3CN+CD3CN) mixtures with respect to pure CH3CN/CD3CN as a funct
Publikováno v:
Chemical Physics Letters. 296:611-618
The shifts and linewidth changes of three vibrational modes of C 6 H 5 Cl were studied in hydrogen-bonded binary mixtures C 6 H 5 Cl+CH 3 OH at various mole fractions of C 6 H 5 Cl, C =0.05, 0.1, 0.2, 0.3, 0.5, 0.7 and 0.9. The study reveals that the
Publikováno v:
Chemical Physics Letters. 209:390-396
The linewidths and frequency shifts of the two components of ν 1 (CN) stretching modes separated by ≈ 11 cm −1 have been studied as a function of temperature in the range 0 to – 175°C. Although the frequency shifts are quite small, 4–5 c
Publikováno v:
Spectrochimica Acta Part A: Molecular Spectroscopy. 49:53-72
The IR and Raman spectra of 8-azaguanine and 8-azaadenine have been studied. The spectra of 8AG have been critically examined and compared with those of guanine and 9-methylguanine. Similarly, the spectra of 8-azaadenine have been examined and compar
Publikováno v:
Spectrochimica Acta Part A: Molecular Spectroscopy. 47:673-689
Vibronic spectra of 2,3-, 2,4-, and 2,5-dimethylanilines (DMA) have been recorded in the vapor phase and analysed primarily for ascertaining the frequencies of certain low lying fundamentals (< 1000 cm−1) which were observed earlier in infrared and
Autor:
B.P. Asthana, H.M. Heise
Publikováno v:
Vibrational Spectroscopy. 56:1-2
Autor:
Sadowska, Anna1 (AUTHOR) anna.sadowska@umb.edu.pl, Osiński, Patryk2 (AUTHOR) 44452@lazarski.pl, Roztocka, Alicja2 (AUTHOR) 44463@lazarski.pl, Kaczmarz-Chojnacka, Karolina2 (AUTHOR) 44409@lazarski.pl, Zapora, Ewa3 (AUTHOR) e.zapora@pb.edu.pl, Sawicka, Diana1 (AUTHOR) halina.car@umb.edu.pl, Car, Halina1 (AUTHOR)
Publikováno v:
International Journal of Molecular Sciences. Jan2024, Vol. 25 Issue 1, p466. 25p.
Publikováno v:
Chemical Physics Letters. 94:41-47
The isotropic Raman bandwidths and frequency shifts of the ν 1 (ring) mode of hydrogen-bonded species of C 5 H 5 N…HOCH 3 have been measured as a function of concentration of C 5 H 5 N in a mixture of C 5 H 5 N + CH 3 OH employing the technique of