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Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation R. P. Eischens, W. A. Pliskin, S. A. Francis; Infrared Spectra of Chemisorbed Carbon Monoxide. J.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Thermal Decomposition of MercaptansA. H. Sehon and B. deB. DarwentCite this: J. Am. Chem. Soc. 1954, 76, 19, 4806–4810Publication Date (Print):October 1, 1954Publication History Published online1 May 2002Published inissue 1 October 1954https://doi.org/10.1021/ja01648a011…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLattice Parameters of Some Rare Earth Compounds and a Set of Crystal RadiiD. H. Templeton and Carol H. DaubenCite this: J. Am. Chem. Soc. 1954, 76, 20, 5237–5239Publication Date (Print):October 1, 1954Publication History Published online1 May 2002Published inissue 1 October…
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The behavior of hafnium oxide was studied particularly in the temperature range 1500° to 18OO°C. Properties of HfO 2 at these temperatures and its reactions with ZrO 2 , SiO 2 , and CaO are given in terms of lattice and other physical measurements, many of which are new. Mono‐clinic hafnium oxide is stable to 1700°C.,…
A calculation is given of the indirect exchange ${\mathrm{I}}_{i}\ifmmode\cdot\else\textperiodcentered\fi{}{\mathrm{I}}_{j}$ type coupling of nuclear magnetic moments in a metal by means of the hyperfine interaction with the conduction electrons. The interaction appears to account qualitatively for the broad nuclear s…
Abstract The oxidation of iron, previously freed from oxide by hydrogen treatment, has been studied at 175 to 350° C; five methods (gravimetric, electrometric, film -transfer followed by chemical or microscopic examination, X -rays and electron diffraction) have been used to identify and estimate the different oxides.…
The unit cells of form C of long normal chain carboxylic acids with 12, 14, 18, 22 and 26 carbon atoms are determined, using powder methods. All dimensions in the monoclinic cell are found to be dependent of the number of carbon atoms in the chain. The a and b axes and the angle fl decrease asymptotically with increas…
An X-ray investigation of a precipitate obtained by the action of pancreatic enzymes on an aqueous solution of silk fibroin suggests that the precipitate has essentially the same crystal structure as the silk fibre. Since the precipitate consists almost entirely of glycine, alanine and serine residues, it is concluded…
Formamide, I-ICONH~, melts at 2.5 C. On the basis of an X-ray diffraction investigation conducted at --50 C., it was found that the compound crystallizes in a monoclinic unit cell with: a ----3.690-01, b ----9.18+0.025, c ----6.870.02 /~, fl ----98% The space group is P21/n. There are four molecules per unit cell.
Neutron diffraction studies have been made of a ferrite powder of composition ${\mathrm{Zn}}_{0.5}$${\mathrm{Ni}}_{0.5}$${\mathrm{Fe}}_{2}$${\mathrm{O}}_{4}$. The crystal structure is of the spinel type with 4 ${\mathrm{Zn}}^{++}$ and 4 ${\mathrm{Fe}}^{+++}$ ions in the tetrahedral positions and 4 ${\mathrm{Ni}}^{++}$…
Abstract A modified form of the magnetic balance previously designed by one of us, is described. In this apparatus the gradient is made independent of the magnetizing field. With such an apparatus measurements have been made on the variation of the intensity of magnetization with magnetic field for single-crystal spec…