178. Red tin(II) oxide
J. D. Donaldson, W. Moser and W. B. Simpson, J. Chem. Soc., 1961, 839 DOI: 10.1039/JR9610000839
Materials Literature
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A Mechanism of the Anodic Passivation of Nickel in Acid Solution –Higher Valence Oxide Film Theory–
On the anodic passivation of metals, two different processes, (A) precipitation from a super-saturated solution and (B) direct reaction between a metal and solution, have been previously considered for the anodic formation of passive oxide film. Both of these mechanisms were criticized from the kinetic point of view t…
The Corrosion of Decorative Nickel + Chromium Coatings: A Metallographic and Potential Study
SYNOPSISThe morphology of pits in decorative nickel+chromium coatings resulting from service corrosion in an industrial atmosphere has been compared with that of pits produced in accelerated corrosion tests. Corrosion in the three accelerated tests examined and in the early stages of service corrosion was frequently c…
Studies on the Glass Formation Range of Borate Systems
Studies have been made on the problems of the glass formation range, which are important as the fundamental data for the science and industry of glass, and the systematic investigation of which has never been carried out.Borate systems were studied using, except B2O3, the oxides of 16 a-group elements-Li, Na, K, Be, M…
304. The vibrational spectra and structures of dithionate, hypophosphate, and related ions
W. G. Palmer, J. Chem. Soc., 1961, 1552 DOI: 10.1039/JR9610001552
Germanium Dendrite Studies
The importance of suitable seeds in dendritic growth of long ribbons of semiconductors is discussed, and investigations to determine the characteristics of suitable seeds are reported. Studies of growth buttons have yielded information about the initiation of spontaneous and also controlled dendritic growth from butto…
Über Decarboxylierung und Dissoziation heterocyclischer Dicarbonsäuren
When solid heterocyclic dicarboxylic acids and their hexamethylenediammonium salts are heated in a sealed system, temperature‐pressure diagrams are obtained which allow the determination of the exact temperature at which decarboxylation starts. Some decarboxylation points are indicated.
A tracer study of the persulfate–bisulfite-catalyzed polymerization of acrylonitrile
A tracer study has been made of the polymerization of acrylonitrile in an aqueous solution at 25°C with the use of radioactive K2S352O8 and NaHS35O3 in a redox catalyst system. Persulfate and bisulfite give sulfate and sulfonate endgroups, respectively. The contents of these endgroups in the polymer were determined an…
Die Kristallstruktur von CuOHCl
The crystal structure of CuOHCl has been determined by X‐ray single crystal methods. The structure was refined by F OURIER methods and by three‐dimensional « least square» treatment. CuOHCl has a monoclinic cell with
A Study of Pore Structures on Anodized Aluminum
It is demonstrated that the presence of surface oxide films on aluminum, prior to anodizing in a pore‐forming electrolyte, can reduce the number of surface pores and the surface roughness compared to that normally obtained with fresh aluminum surfaces. Electron micrographs show that, in such a case, porous anodization…
The surge corona discharge
Exploratory experiments are described followed by an account of a more systematic study of the corona discharge with concentric-cylinder electrodes. From experimental records which relate the charge flow in an external circuit to the applied voltage, the corona current and energy loss were derived. An attempt is made…
673. The proton magnetic resonance spectra of porphyrins. Part I. The effect of β-substitution on the proton chemical shifts of porphyrins
R. J. Abraham, A. H. Jackson and G. W. Kenner, J. Chem. Soc., 1961, 3468 DOI: 10.1039/JR9610003468
Some Properties of In[sub 2]Te[sub 3] and Ga[sub 2]Te[sub 3]
This paper summarizes the measurements which have been made to determine various physical parameters for the compounds Ga 2 Te 3 and In 2 Te 3 . The previously described problems of the preparation of stoichiometric In 2 Te 3 and Ga 2 Te 3 and the associated question of ordering of lattice vacancies in In 2 Te 3 are r…
Electron Spin Resonance and Optical Absorption of K3[Cr(CN)5 NO]· H2O
Electron spin resonance of a water solution and of the pure powder of K3[Cr(CN)5NO]·H2O reveal a single sharp resonance line at room temperature. The water solution resonance gives a Cr53 hyperfine structure which is further split by a ``superhyperfine'' structure due to the nitrogen in the NO ligand. From the electro…
Diffusion und Permeation von Gasen in Hochpolymeren in Abhängigkeit vom Kritallisationsgrad und von der Temperatur
Nach der Barrerschen Methode werden die Permeations-, Diffusions- und Löslichkeitskoeffizienten permanenter Gase in Terylen und Polypropylen verschiedenen Kristallisationsgrades bestimmt. Die drei Größen sind bei den kristallisierten Stoffen gegenüber den entsprechenden amorphen erheblich erniedrigt. Ebenso verhält es…
The Reaction between Anodic Aluminum Oxide and Water
The action of water at 100°C on barrier anodic aluminum oxide has been studied for reaction times up to 30 min. The hydrated product is essentially the same as that formed when aluminum metal reacts with water under the same conditions. Furthermore, the rate of hydration of anodic oxide is remarkably similar to the ra…
Studies on polycondensation reactions of nylon salt. II.. The rate of polycondensation reaction of nylon 66 salt in the presence of water
Abstract The polycondensation reaction of hexamethylenediammonium adipate (nylon 66 salt) has been studied in the presence of water in 0.5–10.0 molar ratio. The reaction proceeds extremely fast and reaches equilibrium after about 5 hours at 200‐220°C. The apparent equilibrium constant between chain molecules increases…
High-temperature X-ray diffraction studies of fused salts. Structure of molten alkali carbonates and sulphates
The first page of this article is displayed as the abstract.
Oxidation and Equilibrium in Nonstoichiometric Zirconium Dioxide Powder
Two properties of nonstoichiometric zirconium dioxide powder have been studied. Pressures of oxygen in equilibrium with , with 0.03 > x > 0, have been determined at temperatures of 900°, 1000°, and 1100°C by passing hydrogen‐water vapor mixtures over the oxide. The measured pressures are in the range 10 −20 to 10 −12…
245. Metal chelates. Part II. Phthalocyanine–chromium complexes and perpendicular conjugation
J. A. Elvidge and A. B. P. Lever, J. Chem. Soc., 1961, 1257 DOI: 10.1039/JR9610001257