Cobaltous Acetylide

Cobaltous Acetylide [Kobalt (Il)-acetylenid, in Gerl, CoCj solid, prepd by treating CaCj with CoCla... 

Cobalt and its compds 3 C383-C388 cobalt, analytical procedures 3 C388 cobalt acetylide 1 A72... 

C 160 C 215-L, Ref 9 C 215-R, Ref 35 C 220-R Refs out of order (1953) instead of (1949) Zaehringer instead of Zaeringer Cobaltous Acetylide instead of Cobaltous Azetylide... 

Cobaltous Acetylide [Kobalt (II)—acetylenid, in Get], CoC, solid, prepd by treating CaC, with CoQ,... 

Zaehringer instead of Zaeringer Cobaltous Acetylide instead of Cobaltous Azetylide... 

Alone, or Metals, or Metal compounds Mellor, 1940, Vol. 8, 327 1967, Vol. 8, Suppl. 2.2, 84, 96 It is an explosive of positive oxygen balance, less stable than ammonium nitrate, and has been studied in detail. Stable on slow heating to 300°C, it decomposes explosively on rapid heating or under confinement. Presence of zinc, copper, most other metals and their acetylides, nitrides, oxides or sulfides cause flaming decomposition above the m.p. (70°C). Commercial cobalt (cubes) causes an explosion also. 

The process is initiated by a double Grignard reaction of 4-pentynoic acid 153, first with 3-butenyl magnesium bromide and subsequently magnesium acetylide followed by silylation of the formed ter-tiaiy hydroxyl function. The cobalt induced polycy-clization leads directly to the fenestrane 157 interestingly, the reaction halts at the stage of 156 when employing the unprotected alcohol. 

Lithium acetyl(carbonyl)nitrosyltris-(triphenylphosphine)cobaltate, 102 Lithium acetylide, 44 Lithium acetylides, 44, 166, 206, 219, 244, 284... 

Hydrothermal methods, for molecuarlar precursor transformation to materials, 12, 47 Hydrotris(3,5-diisopropylpyrazolyl)borate-containing acetylide, in iron complex, 6, 108 Hydrotris(3,5-dimethylpyrazolyl)borate groups, in rhodium Cp complexes, 7, 151 Hydrotris(pyrazolyl)borates in cobalt(II) complexes, 7, 16 for cobalt(II) complexes, 7, 16 in rhodium Cp complexes, 7, 151 Hydrovinylation, with transition metal catalysts, 10, 318 Hydroxides, info nickel complexes, 8, 59-60 Hydroxo complexes, with bis-Cp Ti(IV), 4, 586 Hydroxyalkenyl complexes, mononuclear Ru and Os compounds, 6, 404-405 a-Hydroxyalkylstannanes, preparation, 3, 822 y-Hydroxyalkynecarboxylate, isomerization, 10, 98 Hydroxyalkynes, in hexaruthenium carbido clusters, 6, 1015 a-Hydroxyallenes... 

ACETIC ACID, COBALT(II) SALT (71-48-7) Co(CjH30j)i 4HOH Noncombustible solid. Solution in water is basic (pH 6.8 to >7.0) reacts with acids. Some cobalt compounds react with oxidizers, acetylene. Cobalt is a known animal carcinogen. ACETIC ACID, CUPRIC SALT (142-71-2) Cu(C2H302)i H20 Noncombustible solid. Solution in water is basic reacts with acids. Incompatible with acetylides, hydrazine, nitromethane, mercurous chloride nitrates, sodium hypobromite. Thermal decomposition releases fumes of copper, acetic acid, and carbon oxides. 

BUTEN-3-YNE (689-97-4) Flammable gas (flash point <23°F/<—5°C). Unless inhibited, forms unstable peroxides with atmospheric oxygen or air. Heat, sunlight, oxygen, 1,3-butadiene, peroxides, oxidizers can cause explosive decomposition or polymerization. Forms sensitive and highly unstable metal acetylides with silver, cobalt, copper, magnesium, mercury, and their alloys. 

ESTANO (Spanish) (7440-31-5) Finely divided material is combustible and forms explosive mixture with air. Contact with moisture in air forms tin dioxide. Violent reaction with strong acids, strong oxidizers, ammonium perchlorate, ammonium nitrate, bis-o-azido benzoyl peroxide, bromates, bromine, bromine pentafluoride, bromine trifluoride, bromine azide, cadmium, carbon tetrachloride, chlorine, chlorine monofluoride, chlorine nitrate, chlorine pentafluoride, chlorites, copper(II) nitrate, fluorine, hydriodic acid, dimethylarsinic acid, ni-trosyl fluoride, oxygen difluoride, perchlorates, perchloroethylene, potassium dioxide, phosphorus pentoxide, sulfur, sulfur dichloride. Reacts with alkalis, forming flammable hydrogen gas. Incompatible with arsenic compounds, azochloramide, benzene diazonium-4-sulfonate, benzyl chloride, chloric acid, cobalt chloride, copper oxide, 3,3 -dichloro-4,4 -diamin-odiphenylmethane, hexafluorobenzene, hydrazinium nitrate, glicidol, iodine heptafluoride, iodine monochloride, iodine pentafluoride, lead monoxide, mercuric oxide, nitryl fluoride, peroxyformic acid, phosphorus, phosphorus trichloride, tellurium, turpentine, sodium acetylide, sodium peroxide, titanium dioxide. Contact with acetaldehyde may cause polymerization. May form explosive compounds with hexachloroethane, pentachloroethane, picric acid, potassium iodate, potassium peroxide, 2,4,6-trinitrobenzene-1,3,5-triol. 

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