Showing papers in "Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy in 1960"

TL;DR: The calcium content of blood serum can be accurately determined on 0.1-0.25 ml samples by atomic absorption measurements in an air-acetylene flame after removal of the proteins by coagulation and centrifuging.

TL;DR: The concept of group frequencies is particularly useful in the interpretation of the infrared spectra of organosilicon compounds as mentioned in this paper, and many of the characteristic absorptions of these groups are discussed in terms of their use in identifying and characterizing molecular species.

TL;DR: In this article, the Raman spectra (liquid phase) and infrared spectra of aniline, NHD and ND2 were studied, the infrared study being in the 320-3800 cm−1 range for the liquids and solutions and in the 400- 3800 cm − 1 range for vapors.

TL;DR: In this article, the infrared spectra from 300-880 cm−1 of 208 inorganic substances are reported, nearly all of which are salts containing polyatomic ions, and a list of characteristic frequencies is given for twenty ions.

TL;DR: In this article, a complete vibrational assignment for phenol is presented and a value of 3·37 kcal/mole has been determined for the barrier to internal rotation about the C-O bond.

TL;DR: In this article, a comparative study of the gas and liquid infra-red spectra of C6H5CH3 and C6D5CD3 was performed, and it was shown that there is no free rotation of the methyl group.

TL;DR: In this article, the qualitative explanation to explain an unusual feature in the infrared absorption spectrum of m -toluidine has been expressed in quantitative terms and several examples of the effect are described and compared with theoretical predictions.

TL;DR: In this article, the polarized infrared spectra of single crystals of Na2Ni(CN)4·3H2O and BaNi(NB) 4·4H2Os are reported.

TL;DR: The infra-red spectra of a wide variety of polyamides of diamine-diacid and ω-amino acid type are reviewed in this paper.

TL;DR: In this paper, the vibration frequencies, infra-red and Raman intensities of naphthalene are calculated, and a preferred assignment is given in Tables 1 and 2.

TL;DR: In this paper, a valence force field, including selected interaction constants, was used to compute the thirty-three planar vibration frequencies of each of naphthalene, naphthene-α-d4.

TL;DR: In this paper, the infra-red spectra of solids can be studied by the pressed-disk technique, which involves pulverizing a little of the sample with a powdered alkali halide and pressing in vacuo under pressure to give a transparent disk.

TL;DR: In this article, the infrared spectra of a variety of acetylenic compounds have been obtained and the behavior of various frequencies characteristic of the -C-C-H group ( C-H stretch, ~3315 cm−1; C-C stretch, ∼2130 cm− 1, C -C stretch, approximately 1000 cm−

TL;DR: In this article, the infrared spectra of various compounds were reported over the region 400 to 1500 cm −1 for most of the compounds, including trimer, tetramer, high polymer, methyltin oxide and 1:3-dichlorotetramethyldistannoxane.

TL;DR: In this paper, the Ferranti Mercury Computer is used to calculate the vibrational potential functions and normal co-ordinates of simple polyatomic molecules, such as methane molecules.

TL;DR: In this paper, a grating instrument was used to examine the infrared absorption of aniline in which 31·9 per cent of nitrogen is 15N and 68·1 per cent is 14N in dilute CCl4 and CS2 solutions.

TL;DR: In this paper, the Raman and infra-red spectra of a series of aliphatic and aromatic isothiocyanates (mustard oils) have been measured.

TL;DR: In this article, a normal co-ordinate treatment of benzene is carried out using the Urey-Bradley force field, and also a slight modification of it, which favors the assignment of v 14 to 1618 cm −1, close to the original suggestion of I ngold, and in the absence of definitive experimental evidence this assignment is adopted.

TL;DR: In this paper, a simple single-beam atomic absorption sapectrophotometer is described, which is suitable for many analytical requirements, such as the one described in this paper.

TL;DR: In this paper, a near-infra-red absorption spectra and measurement of apparent dipole moments were made of formanilide, acetanilide and thioacetanilides, dissolved in carbon tetrachloride at various concentrations.

TL;DR: In this article, the authors proposed a method of direct integration to obtain absolute infra-red intensities by dividing the observed band into segments and integrate for each segment with a width parameter suitable for it.

TL;DR: In this article, the Si-H bond in substituted silanes is discussed in terms of the inductive power of the substituent radicals, and the vibration frequency is analyzed.

TL;DR: In this article, an assignment of the absorption bands based on C 2 v molecular symmetry is presented for the infra-red spectra of ethylenediamine and d 4 in the vapour, liquid and solid state.

TL;DR: The sodium and potassium content of blood serum can be determined on samples of less than 1 ml by atomic absorption measurements in an air-coal gas or air-acetylene flame.

TL;DR: The carbonyl frequencies of 4-pyridones are normally assigned to the 1650 cm−1 region but theoretical considerations suggest that much lower values are to be expected as discussed by the authors.

TL;DR: In this paper, it was proposed that at any instant in liquid m-toluidine a special perturbation occurs between certain vibrational energy levels in a small fraction of the molecules.

TL;DR: In this paper, the difficulties associated with the construction of sealed-off hollow-cathode discharge tubes are shown to have been exaggerated, and various designs of tube having lifetimes upwards of 30 A hr are described.

TL;DR: In this paper, the absorption spectrum of pyrazine in the region 3200 a has been photographed in the fourth order of a 150,000-line, plane grating, and the results for the ground state are B0 = 0.2048 cm−1 which is consistent with dimensions interpolated between those of pyridine and those of s-triazine.

TL;DR: In this paper, the rotation-vibration spectrum of hydrazine vapour has been measured from 250 to 750 cm−1 and the torsional vibration bands arising from the transition of n: 0 → 1, 0 → 2 and 1 → 2 were assigned.