Showing papers in "Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy in 1970"

TL;DR: In this paper, the infrared spectra of phthalocyanine and seven divalent metal derivatives have been recorded in the region 400-4000 cm−1 and the metal-ligand vibration and other metal dependent bands were found and the anomalies of Cu2+ and Zn2+phthalocyanines were interpreted on the basis of electronic configurations of outer orbitals of the metals.

TL;DR: In this article, the infrared and Raman spectra of dimethylsulfoxide and dimethyl sulfoxide-d 6 have been re-investigated and new assignments are proposed based on comparison of the spectra and consideration of the polarisation of Raman lines.

TL;DR: In this article, the results of new measurements of the infrared spectra (3650-50 cm −1 ) together with the Raman shifts, wavenumbers for all the fundamental frequencies, and complete interpretations of the observed spectra are presented for the fifteen compounds p -XC 6 H 4 Y; X, Y = CH 3, F, Cl, Br or I.

TL;DR: In this article, the infrared and Raman spectra for fifteen compounds, o-, m- or p-XC6H4NO2; X = CH3, F, Cl, Br, or I are presented and interpreted in detail.

TL;DR: In this article, the effects of ionisation on other organophosphorus correlations are discussed, as well as the effect of ionization on the properties of the corresponding IR bands assigned to PO2, PO32−, PO43−, POS−, PS2− and dialkyl phosphite anions.

TL;DR: In this article, complete assignments and full interpretations of the infrared (3650-50 cm−1) and Raman spectra for the fifteen compounds m-XC6H4Y were proposed.

TL;DR: The vibrational spectrum of crystalline squaric acid (1,2-dihydroxycyclobutenedione) has been recorded at and below ambient temperature as discussed by the authors.

TL;DR: In this article, solvent effects on the visible absorption (charge transfer) spectra of bis-(2,2'-bipyridyl)biscyanoiron(II), bis-(1,10-phenanthroline), and ligand-substituted derivatives are correlated with solvent E T parameters.

TL;DR: In this article, complete assignments and full interpretations of the infrared (3650−50 cm−1) and Raman spectra are proposed for the fifteen compounds o-C6H4Y; X, Y = CH3, F, Cl. Br or I.

TL;DR: In this article, the infrared spectra of gaseous HCCl 3 and DCCl 3 were reported and the most likely force field was derived from the literature values of D j D jk, and isotopic splittings.

TL;DR: In this article, the far infrared spectra (400-30 cm−1) of phthalocyanine and its metal derivatives were systematically studied and the assignments were proposed for the individual absorption bands observed.

TL;DR: In this article, the equilibrium constants of 1:1 and 2:1 stoichiometric complexes have been determined, which are related to the sum of the Hammett σ constants by the following relations: log K1 = 1.73 + 1.30Σσ log K2= 1.57 + 0.05 Σσ+ 0.94 (σ)2 Log K1 is linearly related to Δμ.

TL;DR: In this article, the infrared spectrum of some LiX III O 2 compounds with an ordered distribution of Li and X III cations on octahedral sites has been investigated with the help of 6 Li-7 Li isotopic replacement.

TL;DR: In this article, the spectra of 22 compounds were studied in the region 2000 −40 cm −1, and the differences between XO 4 tetrahedra and XO 6 octahedra were established.

TL;DR: In this paper, it has been proved that for almost all electro-optical parameters, it is possible to determine values which are commonly applicable to all chlorinated methane molecules, but for μ CH and ∂μ CH / ∂ r CH, it is not possible to find commonly applicable values.

TL;DR: The infra-red spectra of 78 double salts of which 64 are Tutton's salts have been investigated in the region 2000-40 cm−1, and are considered in terms of the site group and factor group approximations.

TL;DR: In this paper, the vibration frequencies of structures which typify ortho silicate, pyro silicates, chain and sheet have been calculated using an extension of the Wilson GF method, in order to confirm the general interpretation of Raman spectra of binary glasses.

TL;DR: In this paper, a normal co-ordinate analysis has been made using a valence force field with some constraints, which suggests an increasing SiSi stretching force constant in the series (Si 2 H 6 2 I 6 2 Br 6 2 Cl 6 ) caused by second order hybridization and by interaction of silicon d -orbitals.

TL;DR: In this paper, the authors compared the sensitivities of these charge-transfer bands to solvent variation for these systems and for Fe(LL) 2 (CN) 2, where LL = bipy, ophen, or one of their substituted derivatives, and M(bipy)(CO) 4, where M = Mo or W.

TL;DR: In this paper, the infrared spectra of 2-chloro, 2-bromo and 2-iodo were recorded in the gaseous and liquid states in the region 5000-200 cm −1.

TL;DR: In this article, the infrared and Raman spectra between 3000 and 500 cm −1 have been assigned for eight isotopic species of methyl ethyl ether and two conformers are observed at room temperature; the more stable conformer, trans, is the only one left at 80°K.

TL;DR: In this article, the spectra of twenty 2-substituted thiophenes, SC 4 H 3 X, were analyzed over the range 200-1700 cm −1 and around 3000 cm − 1.

TL;DR: In this article, the spectral lines are remarkably sharp and intense, and depend more on the nature of the M''' than on the M' cations, while the infrared spectra of 18 Tutton salts are more sensitive to the nature M'' cation than to the m' cation.

TL;DR: In this paper, the far-infrared and Raman spectra of biopolymers such as DNA, RNA and synthetic polynucleotides were determined in the crystalline state.

TL;DR: In this article, the low-frequency infrared and Raman spectra of some pseudo tetrahedral complexes of the formula ZnL 2 X 2 (L = NH 3, ND 3, imidazole, imidaze- d 4, and 1-methyl-imidazoles; X = Cl, Br, I) are reported.

TL;DR: In this article, the complete vibrational spectra of sila cyclo butane, (CH 2 ) 3 SiH 2, and of three of its derivatives, where X = D, F, Cl, have been recorded and an assignment for each molecule is proposed.

TL;DR: In this article, the infrared and Raman spectra of the pyrimidine complexes Hg(C 4 H 4 N 2 )X 2 (X = Cl, Br) and several pyrimidinium salts have been obtained in the 3200-300 cm −1 range.

TL;DR: In this paper, the infrared and Raman spectra of single crystal samples of naphthalene-d 8 have been recorded over the entire energy range of the fundamental vibrations and the spectra in all independent polarizations are presented.

TL;DR: In this paper, the laser Raman spectra have been observed for two modifications of the acetylene crystal and it was shown that the high temperature modification (crystal I) showed three bands due to lattice vibrations of rotational origin.

TL;DR: In this paper, the infrared and Raman spectra of trimethylamme oxide, trimethylphosphine oxide, and trimethylaraine oxide are reported and discussed.