Blue-metal

Blau-spat, m. lazulite. -stein, m. blucstone, blue vitriol lazulite (Metal.) blue metal, blue mat(te). -stich, m. bluish tinge or tint, -stift, m. blue pencil, -stoff, m. cyanogen, -sucht, /. cyanosis. 

The alkali metals also release their valence electrons when they dissolve in liquid ammonia, but the outcome is different. Instead of reducing the ammonia, the electrons occupy cavities formed by groups of NH3 molecules and give ink-blue metal-ammonia solutions (Fig. 14.14). These solutions of solvated electrons (and cations of the metal) are often used to reduce organic compounds. As the metal concentration is increased, the blue gives way to a metallic bronze, and the solutions begin to conduct electricity like liquid metals. 

In other white light devices, blue, green and red emitters are combined. Kido et al. [169, 170] designed multilayer systems using 6 (TPD) for blue, metal-chelate complexes for green and red emission, respectively. Similar devices have been developed by other groups, using Forster transfer or exciton confinement for the creation of the three primary colors [171, 172]. Exciplex emission was... 

Ordinarily, high temperature and ultraviolet radiation seem to promote the decomposition of metal-ammonia solutions. However there is evidence that these factors merely accelerate decomposition which was initially begun by catalytic amounts of contaminants on the walls of the containers. A silica tube was rinsed with liquid ammonia, the rinse-ammonia removed by evaporation, and the tube evacuated a concentrated blue metal-ammonia solution ( 1M) was prepared in the tube,... 

To a stirred mixture of 208 mg (1.00 mmol) of 86, 14 mg (0.02 mmol) of Pd(PPh3)2Cl2 and 7 mg (0.04 mmol) of Cul in a mixture of 5 mL of THF and 1 mL of triethylamine under nitrogen was added dropwise over 10 min a solution of 0.13 mL (1.10 mmol) of 85 in 5 mL of THF. The reaction mixture was stirred at room temperature for 6 h until the complete consumption of 86 (monitored by TLC or GC-MS). Then, a solution of 0.17 mL (2.00 mmol) of pyrrolidine in 5 mL of methanol was added and the mixture was heated at reflux for 6 h until the complete conversion of the intermediate alkyne (monitored by TLC or GC-MS). The solvents were evaporated in vacuo and the residue was chromatographed over a short pad of aluminum oxide, eluting with dichloromethane, to furnish after recrystallization from hexane-chloroform 200 mg (71 %) of the analytically pure enamine 87e as crystals with a blue metallic luster, m.p. 100-101 °C. 

Properties Dark-purple crystals with blue metallic sheen. Sp. gr. 2.70. Decomposes at 240°. Strong oxidizing agent. 

Niobium, discovered in 1801 and formerly called colum-bium, was a special favorite. A soft, ductile, gray-blue metal, it is present in several minerals, forms a number of compounds and complexes, and is used to strengthen welded joints and certain steels. In 1941, scientists reported superconductivity in niobium nitride with a Tc around 16° K, fairly high compared to earlier superconductors. Progress slowed after that until 1953, when John Hulm, of the University of Chicago, put together a material... 

Silver Halides, CBr, HgBr2 Eosin/Amine,Cyanine dyes Methylene blue Metal alkyls M(CO) ... 

In order to check the paintability of parts molded with Q2-7119, test panels molded with and without silicone fluid were post-cured, solvent wiped with toluene, primed with PPG Durethane 600 Primer and then top coated with Durethane 300 blue metallic flake or white. Painted samples were exposed for 2 years in Florida Direct Black Box 5° South and then evaluated for appearance and adhesion. Results of these tests showed no difference between control and IMR-containing panels. Paint adhesion was excellent. 

Aldehydes or ketones containing a cyclopropyl group adjacent to the carbonyl group can be converted to ring-opened carbonyl compounds by several different types of two-electron reduction processes. The most widely used method employs lithium metal in liquid ammonia as the reductant. The cyclopropyl ketone is usually dissolved in anhydrous diethyl ether and added to the blue metal-ammonia solution. Occasionally, the order of addition is reversed, and the lithium is added to a solution of the ketone in ammonia and diethyl ether. After a timed interval, the reduction is quenched by adding solid ammonium chloride to give a mixture of alcohols and ketones. This mixture is generally oxidized before isolation, with chromium(VI) oxide/pyridine or with sodium dichromate/sulfuric acid, to solely afford the ketone. 

Dark purple or bronze-like, odorless crystals. Almost opaque by transmitted light and of a blue metallic luster by reflected light. Sweet with astringent aftertaste stable in air. 

Yellow rhombic plates with steel-blue metallic luster from ethanol, mp 207 (Zechmeister) mp 215.5° (Kuhn). Optically inactive. Absorption bands (ethanol) 483, 451.5 nm. Practically insol in water- Slightly sol in petr ether, methanol sol in carbon disulfide, benzene, chloroform, carbon tetrachloride, pyridine, ethyl acetate sol in glacial acetic acid upon addition of hexane. Less sol in boiling methanol (1 1550) than xanthophyll. 

Properties Purple to gray cryst. with blue metallic... 

Properties BIk. powd. or steel-blue metal (unpolished) sol. in fused alkalis insol. in acids except hydrofluoric and fuming sulfuric acids at.wt. 180.95 dens. 14.491 (powd.), 16.6 (worked metal) m.p. 2996 C b.p. 5425 C ref. index 2.05 resist, to corrosion and attack by most acids and dikdiis... 

Properties Yel. rhombic plates, steel-blue metallic luster sol. in CS2, benzene, chloroform, CCU, pyridine, ethyl acetate si. sol. in petrol, ether, methanol pract. insol. in water m.w. 568.88 m.p. 207-215 C... 

The Blue Metal Gravels quarry is located around 5 km north of the town of Raymond Terrace, which is around 21 km from the UoN. It can be reached by vehicle in... 

FIGURE 6.7 B doping can substantially enhance the adsorption strength for both H atoms and the metal cluster on the substrate (pink boron black carbon white hydrogen blue metal) (Ref. [79]). (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this book.)... 

Pr3Se4 is an intense blue metal [1]. Powders are dark blue [3, 4]. The X-ray L, absorption spectrum has a principal maximum at 5967 eV. The relative displacement to that of PrBg is -0.1 eV. It seems that the valence of Pr does not vary significantly, Vainshtein et al. [19]. 

Lead(II) sulphide crystallizes in a perfect NaCl structure with Pb-S distance 2 97 A, and is the only binary sulphide of lead. It is found in nature as large regular crystals of galena. It has a grey-blue metallic character and density about 7-6. It is best synthesized in a crystalline form by the action of thiourea upon sodium plumbite solution . ... 

Phthalocyanine blues have excellent fastness and resisttuice properties. They are used in combination with titanium dioxide to produce durable strong or light blues. They are also used in blue metallic paints. Indanthrone blue, which has a red undertone is also used in automotive finishing. 

Flame None 1K/1K Blue metallic 25 at 121°C Pass Pass... 

TPO Adhesion promoter Light blue metallic 1 K Melamine 74 54... 

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