Vibrational spectra and structure of N-methylacetamide in some solid complexes with neutral salts

1985 ◽  
Vol 63 (7) ◽  
pp. 1473-1476 ◽  
Author(s):  
M. H. Baron ◽  
F. Fillaux
Keyword(s):  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Amide Group ◽  
Crystalline Complexes Of ◽  
Solid Complexes

Infrared spectra of crystalline complexes of N-methylacetamide (CH3CONHCH3) and of its ND analog with alcaline perchlorates, tetrabutylammonium halogenides, and alcaline halogenides have been investigated in NH stretching (3500–3050 cm−1), CO stretching (amide I, 1750–1500 cm−1), and NH bending (800–400 cm−1) regions. Possible structures for the complexes are proposed and the non-planarity of the amide group is discussed.

VIBRATIONAL SPECTRA OF SOME ALKYLARSONIUM COMPOUNDS

1965 ◽  
Vol 43 (12) ◽  
pp. 3193-3200 ◽  
Author(s):  
W. R. Cullen ◽  
G. B. Deacon ◽  
J. H. S. Green
Keyword(s):  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Vibrational Assignments

The infrared spectra of some tetramethyl-, tetraethyl-, and triethylmethyl-arsonium salts, and that of tetramethylstibonium triiodomercurate(II) have been recorded in the region 4 000 to 200 cm−1. Vibrational assignments are given for the quarternary 'onium cations, and comparisons are made with the spectra of alkylorganometallic compounds of germanium and tin.

THE VIBRATIONAL SPECTRA OF THE FORMATE, ACETATE, AND OXALATE IONS

1956 ◽  
Vol 34 (2) ◽  
pp. 170-178 ◽  
Author(s):  
K. Ito ◽  
H. J. Bernstein
Keyword(s):  
Aqueous Solution ◽  
Raman Spectra ◽  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Vibrational Assignments ◽  
Oxalate Ions ◽  
Oxalate Ion ◽  
Depolarization Ratios

The infrared spectra of the formate, acetate, and oxalate ions have been obtained for both the solid and aqueous solution. The Raman spectra of these ions with depolarization ratios have been obtained in aqueous solution. Vibrational assignments have been made which differ slightly for the acetate ion and more markedly for the oxalate ion from earlier work. The depolarization ratios confirm Fonteyne’s assignment for the formate ion.

The preparation and vibrational spectra of some phenylchlorostannates

1970 ◽  
Vol 48 (17) ◽  
pp. 2787-2790 ◽  
Author(s):  
I. Wharf ◽  
J. Z. Lobos ◽  
M. Onyszchuk
Keyword(s):  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Alkylammonium Salts

The preparations of tetra-alkylammonium salts of the [(C6H5)2SnCl3]−, [(C6H5)2SnCl4]2−, and [(C6H5)3SnCl2]− ions are described. Infrared spectra (1300–100 cm−1) and Raman (400–100 cm−1) spectra are reported and an assignment of the bands is made.

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.

The Preparation and Low-Frequency Vibrational Spectra of Some Copper(I) and Silver(I) Alkane- and Arene-monothiolate Complexes

1979 ◽  
Vol 32 (7) ◽  
pp. 1443 ◽  
Author(s):  
GA Bowmaker ◽  
L Tan
Keyword(s):  
Raman Spectra ◽  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Low Frequency ◽  
Far Infrared ◽  
New Methods ◽  
Thiolate Complexes ◽  
New Compounds ◽  
First Time ◽  
Far Infrared Spectra

A number of different methods for preparing anionic Group 1B metal thiolate complexes have been investigated. The compounds [Me4N] [CU2(SMe)3] and [Et4N] [Ag5(SBut)6] are reported for the first time, and new methods for preparing the previously known compounds [Et4N] [Cu5(SBut)6], [Me4N]2 [CU5(SPh)7] and [Et4N]2 [Cu5(SPh)7] are described. The far-infrared spectra of the above compounds, and of CuSMe, CuSBut, AgSBut, [Me4N]2 [CU4(SPh)6] and [Me4N]2 [Ag5(SPh)7] have been obtained, and metal-sulfur stretching bands are assigned in the 150-350 cm-1 region. The low-frequency Raman spectra have also been obtained for some of these compounds. Possible structures for the new compounds are considered in the light of the low-frequency vibrational spectra.

Vibrational spectra of organoarsenic compounds stCommunication 5. Infrared spectra of arsine oxides

1969 ◽  
Vol 18 (6) ◽  
pp. 1139-1141
Author(s):  
R. R. Shagidullin ◽  
I. A. Lamanova
Keyword(s):  
Infrared Spectra ◽  
Vibrational Spectra

Coordination compounds of norbornadiene with silver tetrafluoroborate

1968 ◽  
Vol 46 (2) ◽  
pp. 117-124 ◽  
Author(s):  
Harold W. Quinn
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Infrared Spectra ◽  
Coordination Compounds ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hydrated Complexes ◽  
Crystalline Complexes Of

Crystalline complexes of norbornadiene with silver tetrafluoroborate have been obtained both from anhydrous and aqueous solution. While both solutions yield complexes of stoichiometry AgBF4•C7H8 and 2AgBF4•3C7H8, those from the aqueous solutions also contain water of crystallization. The infrared spectra show that norbornadiene is similarly complexed in both the anhydrous and hydrated complexes but that the coordination in the 1:1 complex is different from that in the 2:3 complex. The anhydrous and hydrated 1:1 complexes have the same X-ray diffraction powder patterns while those of 2:3 complexes are different.

Vibrational Spectra of Bis-(Monothioacetylacetonato) Ni(II)

1969 ◽  
Vol 23 (3) ◽  
pp. 224-229 ◽  
Author(s):  
Umesh Agarwala ◽  
P. Bhaskara Rao
Keyword(s):  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Normal Coordinate Analysis ◽  
The Other ◽  
Methyl Groups ◽  
Vibrational Modes ◽  
Normal Coordinate ◽  
Conjugated Systems

The infrared spectra of substituted acetylacetonates have been discussed in the light of normal coordinate analysis of bis-(monothioacetylacetonato) Ni(II) assuming methyl groups as point masses. The Urey-Bradley potential constants evaluated are found to be quite close to those of analogous systems studied earlier. The calculations show that each of the fundamental bands results from vibrational modes involving appreciable contributions from a number of bonds. The single major contribution from the stretching of C = S has been found in the 723 cm−1 band. This is in agreement with the other conjugated systems, like thioamides, studied earlier.

Vibrational Spectra of Molten Salts. IV. Infrared Spectra of Metal Thiocyanate Solutions

1968 ◽  
Vol 48 (2) ◽  
pp. 825-830 ◽  
Author(s):  
R. E. Hester ◽  
K. Krishnan
Keyword(s):  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Molten Salts
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