The low-frequency Raman and IR spectra of nitric acid hydrates

2007 ◽  
Vol 43 (1) ◽  
pp. 254-259 ◽  
Author(s):  
Rafael M. Escribano ◽  
Delia Fernández-Torre ◽  
Víctor J. Herrero ◽  
Beatriz Martín-Llorente ◽  
Belén Maté ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Ir Spectra ◽  
Low Frequency ◽  
Raman And Ir Spectra

Correlation Between Structure and Phonon Spectra of Linear Polyiodide Chains in Tl6I6M2/nn+(I4)2-, [M = Pb, Ag, Au, (Bi0.5 Tl0. 5)]

1980 ◽  
Vol 35 (4) ◽  
pp. 389-402
Author(s):  
H. J. Stolz ◽  
G. Trageser
Keyword(s):  
Ir Spectra ◽  
Phonon Spectra ◽  
Raman And Ir Spectra

Abstract Raman-and IR-spectra of four compounds of the general composition Tl6I6M2/n n+(I4) [n: formal valence of the M-atom, M = Ag, Au, Pb and (Bi0.5Tl0.5)] were investigated in order to identify the polyiodide species present. In accordance with structural results comparable amounts of I42-and I3-/I--groups were found for M = Ag, Pb and (Bi0.5Tl0.5), while in Tl6I6Au2(I4) I3-/I--groups predominate.

scholarly journals Oxidative Destruction of Vulcanized by Changing the Dispersion Composition of Oxidized Vulcanized

2021 ◽  
pp. 207-214
Author(s):  
Milen Dimov ◽  
Zhuldyz Smailova
Keyword(s):  
Nitric Acid ◽  
Ir Spectra ◽  
Structural Changes ◽  
Main Reaction ◽  
Chemical Heterogeneity ◽  
Main Reaction Product ◽  
Oxidative Destruction ◽  
Rubber Component ◽  
Acetone Extracts ◽  
Dispersion Composition

The aim of the present work is to study the processes of oxidative destruction of waste vulcanizates (flakes) with nitric acid. The composition of the particles of the main reaction product was determined (oxidized vulcanized). The IR spectra of hexane and acetone extracts of the oxidized vulcanizates are also presented. It was found that the rubber component of the vulcanizates undergoes deep structural changes leading to the formation of products characterized by chemical heterogeneity

Platin in seiner ungewöhnlichen Oxidationsstufe + III: Diplatin(III)-Komplexe der Modellnukleobase 1-Methyluracil / Platinum in its Unusual Oxidation State + III: Diplatinum(III) Complexes with the Model Nucleobase 1-Methyluracil

1983 ◽  
Vol 38 (11) ◽  
pp. 1441-1445 ◽  
Author(s):  
Bernhard Lippert ◽  
Helmut Schöllhorn ◽  
Ulf Thewalt
Keyword(s):  
Crystal Structure ◽  
Nitric Acid ◽  
Ir Spectra ◽  
Oxidation State ◽  
Structural Similarity ◽  
Single Bond ◽  
Triclinic Space Group ◽  
H Nmr ◽  
Axial Ligands ◽  
Cell Dimensions

Oxidation of the head-tail dimer cis-[(NH3)2Pt(1-MeU)]2(NO3)2 (1-MeU = 1-methyl - uracilato anion, C5H5N2O2) with a mixture of nitrous and nitric acid yields three crystalline species, [(NO2)(NH3)2Pt(C5H5N2O2)2Pt(]SrH3)2(NO2)](NO3)2 · 3 H2O (1), [(H2O)(NH3)2Pt(C5H5N2O2)2Pt(]SrH3)2(NO2)](NO3)2 · 5 H2O (2) and [(NO3)(NH3)2Pt(C5H5N2O2)2Pt(]SrH3)2(NO3)](NO3)2 · 4.5 H2O (3). The crystal structure of 2 has been determined. 2 crystallizes in the triclinic space group P1̄ with cell dimensions a= 11.959(4), b= 11.560(3), c= 11.261(2) Å, α = 89.16(2), β= 104.36(2), γ = 99.61(2)° and Z = 2. The structure was refined to R = 0.056, Rw = 0.061 on 4311 reflections. The Pt-Pt distance within the dinuclear cation of 2 is 2.574(1) Å and cor­responds to a Pt-Pt single bond. The axial ligands are N̲O2 (Ptl) and O̲H2 (Pt2), the equatorial ligands two NH3 groups, N 3 and O4 of 1-MeU for both Pt atoms. The oxidation state of Pt in 2 is +III. 1H NMR and IR spectra of 1, 2, and 3 reveal a close structural similarity of the three compounds.

Raman and IR spectra of cellulosic and synthetic hollow fiber membranes for hemodialysis

1999 ◽  
pp. 601-602
Author(s):  
Alessandro Bertoluzza ◽  
Concezio Fagnano ◽  
Mauro Rossi ◽  
Paola Taddei ◽  
Anna Tinti
Keyword(s):  
Ir Spectra ◽  
Hollow Fiber ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes ◽  
Raman And Ir Spectra

Raman and IR spectra and DFT calculations of potassium antimonyl silicate

2019 ◽  
Vol 1193 ◽  
pp. 477-481 ◽  
Author(s):  
I.A. Balakhnina ◽  
N.N. Brandt ◽  
A. Yu Chikishev ◽  
M.E. Darvin ◽  
A.V. Kargovsky ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Ir Spectra ◽  
Raman And Ir Spectra

Quantum-mechanical ab initio simulation of the Raman and IR spectra of Mn3Al2Si3O12 spessartine

2009 ◽  
Vol 36 (7) ◽  
pp. 415-420 ◽  
Author(s):  
Loredana Valenzano ◽  
Alessio Meyer ◽  
Raffaella Demichelis ◽  
Bartolomeo Civalleri ◽  
Roberto Dovesi
Keyword(s):  
Ir Spectra ◽  
Ab Initio ◽  
Quantum Mechanical ◽  
Ab Initio Simulation ◽  
Raman And Ir Spectra
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