About: Acid-base properties, FT-IR, FT-Raman spectroscopy and computational study of 1-(pyrid-4-yl)piperazine.     Goto   Sponge   NotDistinct   Permalink

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  • We report the vibrational spectral analysis was carried out using FT-IR and FT-Raman spectroscopy for 1-(pyrid-4-yl)piperazine (PyPi). Single crystals of PyPi suitable for X-ray structural analysis were obtained. The acid-base properties are also reported. PyPi supported on a weak acid cation-exchanger in the single protonated form and this system can be used efficiently as the solid supported analogue of 4-N,N-dimethyl-aminopyridine. The complete vibrational assignments of wavenumbers were made on the basis of potential energy distribution. The HOMO and LUMO analysis is used to determine the charge transfer within the molecule and with the molecular electrostatic potential map was applied for the reactivity assessment of PyPi molecule toward proton, electrophiles and nucleopholes as well. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using NBO analysis. The calculated first hyperpolarizability of PyPi is 17.46 times that of urea.
  • We report the vibrational spectral analysis was carried out using FT-IR and FT-Raman spectroscopy for 1-(pyrid-4-yl)piperazine (PyPi). Single crystals of PyPi suitable for X-ray structural analysis were obtained. The acid-base properties are also reported. PyPi supported on a weak acid cation-exchanger in the single protonated form and this system can be used efficiently as the solid supported analogue of 4-N,N-dimethyl-aminopyridine. The complete vibrational assignments of wavenumbers were made on the basis of potential energy distribution. The HOMO and LUMO analysis is used to determine the charge transfer within the molecule and with the molecular electrostatic potential map was applied for the reactivity assessment of PyPi molecule toward proton, electrophiles and nucleopholes as well. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using NBO analysis. The calculated first hyperpolarizability of PyPi is 17.46 times that of urea. (en)
Title
  • Acid-base properties, FT-IR, FT-Raman spectroscopy and computational study of 1-(pyrid-4-yl)piperazine.
  • Acid-base properties, FT-IR, FT-Raman spectroscopy and computational study of 1-(pyrid-4-yl)piperazine. (en)
skos:prefLabel
  • Acid-base properties, FT-IR, FT-Raman spectroscopy and computational study of 1-(pyrid-4-yl)piperazine.
  • Acid-base properties, FT-IR, FT-Raman spectroscopy and computational study of 1-(pyrid-4-yl)piperazine. (en)
skos:notation
  • RIV/00216224:14310/14:00074523!RIV15-MPO-14310___
http://linked.open...avai/riv/aktivita
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  • P(2A-1TP1/090)
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  • MARCH
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  • 1452
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  • RIV/00216224:14310/14:00074523
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  • Piperazine; DFT; PED; FT-IR; FT-Raman (en)
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  • GB - Spojené království Velké Británie a Severního Irska
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  • [6A6212880AC1]
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  • Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
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  • 121
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  • Pazdera, Pavel
  • Mary, Y. Sheena
  • Varghese, Hema Tresa
  • Procházková, Markéta
  • Ševčík, Richard
  • Van Alsenoy, Christian
  • Panicker, C Yohannan
http://linked.open...ain/vavai/riv/wos
  • 000331341100058
issn
  • 1386-1425
number of pages
http://bibframe.org/vocab/doi
  • 10.1016/j.saa.2013.10.119
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  • 14310
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