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Recently Sinanoğlu and Pitzer have shown that a third‐order perturbation calculation of the three‐body system consisting of two interacting nonpolar molecules and an adsorbent surface leads to a three‐body term for the intermolecular interaction in addition to the pairwise interaction. We...
A low‐temperature infrared study of the photolysis products of CF 2 N 2 in inert matrices has yielded the three vibrational fundamentals of the species CF 2 , at 668, 1102, and 1222 cm —1 . Supplementary ultraviolet observations have confirmed the presence of CF 2 in high concentration....
High‐resolution infrared spectra of B 2 H 6 vapor are reported. The sample was prepared from the naturally occurring 11 B☒ 10 B isotopic mixture. The rotational structure of the infrared bands has been analysed for Coriolis perturbations due to rotation about the axis of least moment of...
The optical reflectances of chromia—alumina catalysts in the visible and ultraviolet regions have been determined and, at the same time, the specific chromia surface areas measured by oxygen chemisorption. A relationship was found between the intensities of the charge‐transfer bands of Cr 6+...
This paper describes a semiempirical quantitative theory of the low‐lying electronic states of the radicals PH and PH 2 . The method is an extension of that developed by Jordan and Longuet‐Higgins to treat Row II hydrides. It indicates that a small percentage of d character in the valence...
A survey of the trends in acetone decomposition in the range from the near‐ultraviolet photolysis to gamma radiolysis has been made using a xenon discharge (1470 and 1295 Å) and a krypton discharge (1236 and 1165 Å) for room temperature photolysis. The variation of the ratios to CO of...
The properties of the europium benzoylacetonate laser are described in detail. The effect of an extremely high absorption constant is demonstrated by comparing outputs obtained from cells 0.47 cm and 0.10 cm in diameter. The outputs are quite different as revealed by a study of far‐ and...
The Zeeman spectrum of the 2 F 5/2 , E 5/2 → 2 F 7/2 , E 5/2 sharp‐line fluorescence in CaF 2 :Tm 2+ gives direct proof that the transition is a magnetic dipole one. The measured excited‐state g value of 0.85 agrees with the Landé value. The line strength has been measured and was found to...
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