Copper oxide naming

Native copper has a distinctive reddish/brown color. Its first oxidation state (+1) forms compounds with copper ions named cuprous, also referred to as copper(I), and these ions are easily oxidized with elements in group 16 (e.g., oxygen and sulfur) and elements in group 17 (the halogens). 

A determined search for superconductivity in metallic oxides was initiated in mid-summer of 1983 at the IBM, Zurich Research Laboratories in Riischliken, Switzerland. This research effort was an extension of previous work (145) on oxides, namely, Sr1.xCaxTiOs, which exhibited some unusual structural and ferro-electric transitions (see Section 2.2a). During the summer of 1983, the superconductivity research was focussed on copper-oxide compounds. Muller had projected the need for mixed Cu2+/Cu3+ valence states, Jahn-Teller interactions (associated with Cu2+ ions), and the presence of room temperature metallic conductivity to generate good superconductor candidates. These researchers then became aware of the publication by Michel, Er-Rakho, and Raveau (146) entitled ... 

Secondly, if the first oxidation wave cannot be attributed to metallic copper oxidation, only one oxidisable compound is left, namely Cu(I). Indications for this can be found in the fact that in Cu(I)-containing styrene solutions, the limiting-current of this first oxidation wave is much higher than for Cu(II)-containing solutions. As a matter of fact, the first oxidation wave is expected to be absent in Cu(II) solutions. Apparently, the presence of this wave has to be attributed to the fact that some Cu(I) is present in the vicinity of the electrode surface. When the position of the current-potential curves in Fig. 12.2 reflects the standard potentials of the... 

On the other hand, it may be used a secondary effect, namely creation of deformation (distortion) wave in the copper oxide sample, which because of above should lead to the formation of CDW (and hence SDW) state in the volume of a sample with corresponding increase in Tc. It seems likely that namely such methods was used in [18] where thin (15 nm) film of LSCO was grown with block-by-block molecular epitaxy (defect-free growth process) on SrLaAl04 substrate which lattice period is only somewhat different from that of grown film. Such incommensurability results in... 

That means, for example, that there are two compounds called copper oxide, one of which has copper of oxidation number +1 and the other of oxidation number +2. How are we to know which is which One way is (hopefully) by looking at the name. Their names are copper(I) oxide and copper(II) oxide. The Roman numerals in the names teU you what the oxidation number of copper in the compound is. 

The theoretical interpretation of the high temperature superconductors is still under development. The copper oxide ceramic superconductors obtain their paired conducting electrons from copper in mixed oxidation states of I and II or II and III, depending on the particular system. The paired conducting electrons are called Cooper pairs, after Leon N. Cooper. Cooper s name also gives us the C of BCS the BCS theory is an interpretation of superconductivity for low temperature superconductors (having Tc s of less than 40 K). 

An original version of the static method was proposed by Luskina et al. [48], using a simple instrument. Sample compounds were oxidized in a sealed tube in the presence of copper oxide at a residual pressure of lOmmHg. This method of combustion helps to eliminate the disadvantages inherent in the conventional methods of oxidation, namely, the admission of unburned products into the analysis zone and flammability and explosion hazards. All of the combustion products were forced by a flow of helium from the combustion tube into the chromatographic column where separation took place thus the method makes it possible to dispense with special sampling devices. The separation of water from carbon dioxide was effected in a flow of helium in a column of tricresyl phosphate (0.6 m x 3 mm I.D.). 

OTHER names Cupric oxide copper monoxide black copper oxide... 

The present discussion [47] deals with the formation of natural self-assembly of CuS nanoclusters in dielectric substrates of gum Arabica biopolymer. Low concentration of ammonium complex of copper oxide solution was dissolved in gum Acacia Arabica solution at 60°C and stirred. H2S gas was passed in the same environment for 1 minute. Heating the resulting solution to about 100°C evaporates any possible trace of ammonia. The resulting nanocomplex was caste in the form of very thin film by spin coating technique. The developed specimen was used for experimental investigations, namely TEM, XRD, and electrical experiments such as impedance spectroscopy, and the Arrhenius plot and I-V characteristics were measured in the applied field direction perpendicular to the 2-D plane. 

Synonyms/Trade Names Cu Copper fume CuO Black copper oxide fume. Copper monoxide fume. Copper(ll) oxide fume. Cupric oxide fume... 

Standard commercial electrodes are manufactured by Corhart Refractories (Saint-Gobain SEPR) under the name T-1186. These electrodes are doped with copper oxide and antimony oxide to allow sintering up to about 93% of theoretical density and to have good electrical conduction from room temperature up to operating temperature. Typical properties for T-1186 electrodes are reported in Table 1 and a view of the microstructure is presented in Figure 3. 

The literature also shows that bronze pigments should not be confused with pigments used to produce a bronze colour. Beside the pigments made of bronze , there are other pigments that carry the word bronze in their name but are produced in other ways, such as bronze blue (. v.). Mierzinski (1881), for example, describes preparing a bronze-coloured pigment by mixing 100 parts of zinc vitriol with 3 parts of nitric nickel oxide nitric cobalt oxide and 1-1 parts of nitric copper oxide . 

There has been only one report describing SI-NMP from a metal oxide other than those of titanium and iron, namely from a copper oxide surface [44]. In this study, poly(ionic liquid) was grafted onto micro/nanoscale CuO/Cu surfaces by bimolecular-initiated polymerization with TEMPO nitroxide. For this purpose, the peroxide groups were first introduced onto micro/nanoscale CuO surfaces by reaction of 3-chloropropyltrimethoxysilane (immobilized on the CuO surface) with... 

Metal oxides usually consist of bulk oxides. As semiconductors, metal oxides catalyze the same kind of reactions as metals but in processes requiring higher temperatures. Often a mixture of various oxides is applied to increase the catalytic activity. For example, transition metals, such as M0O3 and Cr203, are good catalysts for polymerization of olefins a mixture of copper and chromium oxides, named copper chromite, is used for hydrogenation and a mixture ofiron and molybdenum oxide (ie, iron molybdate), is used for formaldehyde formation from methanol. 

Usually prepared by the action of NaCN on benzaldehyde in dilute alcohol. It is oxidized by nitric acid to benzil, and reduced by sodium amalgam to hydrobenzoin PhCHOHCHOHPh by tin amalgam and hydrochloric acid to des-oxybenzoin, PhCH2COPh and by zinc amalgam to stilbene PhCH = CHPh. It gives an oxime, phenylhydrazone and ethanoyl derivative. The a-oxime is used under the name cupron for the estimation of copper and molybdenum. 

When naming complex ions the number and type of ligands is written first, followed by the name of the central metal ion. If the complex as a whole has a positive charge, i.e. a cation, the name of the central metal is written unchanged and followed by the oxidation state of the metal in brackets, for example [Cu(N 113)4] becomes tetra-ammine copper(II). A similar procedure is followed for anions but the suffix -ate is added to the central metal ion some examples are ... 

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