Vibrational Spectroscopic Characterization and DFT Study of Palladium(II) Complexes with N-Benzyliminodiacetic Acid Derivatives

2016 ◽  
Vol 69 (11) ◽  
pp. 1285 ◽  
Author(s):  
Neven Smrečki ◽  
Igor Rončević ◽  
Zora Popović
Keyword(s):  
Density Functional Theory ◽  
Infrared Spectroscopy ◽  
Infrared Spectra ◽  
Density Functional ◽  
Thermal Analyses ◽  
Iminodiacetic Acid ◽  
Density Functional Theory Calculations ◽  
Molecular Geometry ◽  
Spectroscopic Characterization ◽  
Functional Theory

The reactions of N-benzyliminodiacetic acid (BnidaH2) and its para-substituted derivatives, namely N-(p-chlorobenzyl)iminodiacetic acid (p-ClBnidaH2), N-(p-nitrobenzyl)iminodiacetic acid (p-NO2BnidaH2), and N-(p-methoxybenzyl)iminodiacetic acid (p-MeOBnidaH2) with sodium tetrachloropalladate(II) were performed in aqueous solutions. Three new complexes [Pd(p-ClBnidaH)2]·2H2O (2), [Pd(p-NO2BnidaH)2]·2H2O (3), and [Pd(p-MeOBnidaH)2] (4) were prepared and characterized by infrared spectroscopy and thermogravimetric and differential thermal analyses. The molecular geometry and infrared spectra of these three complexes, together with the previously synthesized [Pd(BnidaH)2]·2H2O (1a) and [Pd(BnidaH)2] (1b) were also modelled using density functional theory calculations at the BP86/6–311+G(d,p) level of theory with SDD pseudopotentials.

scholarly journals Microhydration of PAH+ cations: evolution of hydration network in naphthalene+-(H2O)n clusters (n ≤ 5)

2018 ◽  
Vol 9 (8) ◽  
pp. 2301-2318 ◽  
Author(s):  
Kuntal Chatterjee ◽  
Otto Dopfer
Keyword(s):  
Density Functional Theory ◽  
Infrared Spectroscopy ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Functional Theory ◽  
Size Selected Clusters

The evolution of the microhydration network around a prototypical PAH+ cation is determined by infrared spectroscopy of size-selected clusters and density functional theory calculations.

scholarly journals Spectroscopic identification of fragment ions of DNA/RNA building blocks: the case of pyrimidine

2020 ◽  
Vol 22 (30) ◽  
pp. 17275-17290
Author(s):  
Kuntal Chatterjee ◽  
Otto Dopfer
Keyword(s):  
Density Functional Theory ◽  
Infrared Spectroscopy ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Building Blocks ◽  
Functional Theory ◽  
Fragment Ions ◽  
Sequential Loss ◽  
Spectroscopic Identification

The structure of the predominant fragments of the fundamental pyrimidine cation arising from sequential loss of HCN are identified by infrared spectroscopy of tagged ions and dispersion-corrected density functional theory calculations.

scholarly journals Microhydration of protonated biomolecular building blocks: protonated pyrimidine

2020 ◽  
Vol 22 (23) ◽  
pp. 13092-13107
Author(s):  
Kuntal Chatterjee ◽  
Otto Dopfer
Keyword(s):  
Density Functional Theory ◽  
Infrared Spectroscopy ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Building Blocks ◽  
Protonation Site ◽  
Functional Theory

The protonation site and evolution of the hydration network in microsolvated protonated pyrimidine clusters, H+Pym–(H2O)n with n = 1–4, has been explored by infrared spectroscopy and density functional theory calculations.

Vibrational spectra of alkylamino substituted phthalocyanine compounds: Density functional theory calculations

2018 ◽  
Vol 22 (09n10) ◽  
pp. 771-776 ◽  
Author(s):  
Xin Chen ◽  
Chiming Wang ◽  
Yuxiang Chen ◽  
Dongdong Qi ◽  
Jianzhuang Jiang
Keyword(s):  
Density Functional Theory ◽  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Bond Order ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Molecular Orbitals ◽  
Functional Theory ◽  
Localized Molecular Orbitals ◽  
Theoretical Investigations

The infrared spectra of tetrakis(dibutylamino) phthalocyanine and octakis(dibutylamino) compounds were studied via theoretical investigations. The results reveal deep fusion of the peripheral alkylamino moieties with the phthalocyanine chromophore in the tetrakis(dibutylamino)- but not in the octakis(dibutylamino)-phthalocyanine compounds. The successive localized molecular orbitals (LMO) and bond order analyses give support for the infrared vibrational results.

scholarly journals Molecular Structure and Vibrational Spectra of 2-Ethylhexyl Acrylate by Density Functional Theory Calculations

2013 ◽  
Vol 2013 ◽  
pp. 1-14 ◽  
Author(s):  
Ottman Belaidi ◽  
Tewfik Bouchaour ◽  
Ulrich Maschke
Keyword(s):  
Density Functional Theory ◽  
Infrared Spectrum ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Molecular Geometry ◽  
Electron Diffraction Data ◽  
Functional Theory ◽  
Infrared Intensities ◽  
The Fourier Transform ◽  
Optimized Geometries

The Fourier transform infrared spectra (FTIR) of 2-ethylhexyl acrylate have been measured in liquid phase. The molecular geometry, vibrational frequencies, and infrared intensities have been calculated by using density functional theory. We found two local minima representing s-cis and s-trans conformations for 2-ethylhexyl acrylate molecule. The optimized geometries at DFT//B3LYP/6-311+ are in good agreement with electron diffraction data of methyl acrylate for the acrylic group. The two conformers were used for the interpretation of the experimental infrared spectrum of title compound. PED calculations are represented for a more complete and concise assignment. There is one band in the infrared spectrum at 1646 cm−1 that definitely indicates the conformer with s-trans arrangement of acrylic moiety to be present or not in the liquid 2-ethylhexyl acrylate.

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