Bismuth-carbon

Exceptions to the use of the root name of the central atom are antimonate, bismuthate, carbonate, cobaltate, nickelate (or niccolate), nitrate, phosphate, tungstate (or wolframate), and zincate. 

Bismuth subcarbonate [5892-10 ] (basic bismuth carbonate) is a white or pale yellow powder that is prepared by interaction of bismuth nitrate and a water-soluble carbonate. The exact composition of this dmg depends on the conditions of precipitation it corresponds approximately to the formula (Bi0)2C02. It has been widely used as an antacid (183). 

As described earlier one of the possible products from the AFO reaction is dihydroxyflavonols. Simpson and coworkers took advantage of this outcome in their synthesis of the flavonol rhamnocitrin (23). Chalcone 24 was subjected to the typical AFO conditions to deliver dihydroxyflavonol 25. The isolated product was further subjected to hydrogen peroxide to afford flavonol 25a in 30% yield. However, treatment of 25 with bismuth acetate, generated in situ from bismuth carbonate and acetic acid, gave 25a in 77% yield for a respectable 52% overall yield over two steps. 25a was then selectively demethylated with anilinium chloride to deliver rhamnocitrin (23). 

Organobismuth compounds would have high potential as reagents for transition-metal catalyzed carbon-carbon bond forming reactions, because bismuth-carbon bonds are weak and can be easily cleaved by transition metals. The mean bond... 

Synonyms bismuth subcarbonate bismuth carbonate, basic bismuth basic... 

He was fascinated by the minerals of England, and acquired such great skill in analyzing them that Berzelius and other competent judges referred to him as a famous mineralogist (3). He was a founder and honorary member of the Royal Geological Society of Cornwall, and his analyses of such substances as bismuth carbonate, topaz, wavellite. 

Similar to the other elements in this group, the exchange reactions studied first and most extensively involve the redistribution of bismuth-carbon bonds with bismuth-halogen bonds. Reactions of the type of Eqs. (159) and (160)... 

FIGURE 4.4 Oxygen and nitrous oxide index of polypropylene-chloroparaffin mixtures, 95-5 wt%, with added bismuth carbonate. (From Costa, L. et al., Polym. Degrad. Stabil., 14(2), 117, 1986.)... 

The results obtained with bismuth carbonate were extended to other metals which increase the oxygen index of PP, with a study of their interaction with polypropylene/chloroparaffin mixtures, which is reported in the work of Costa et al.54... 

In accordance with the above directions, sodium carbonate is used to precipitate bismuth hydroxide. Why should not the precipitate be bismuth carbonate ... 

Ignites on contact with antimony, arsenic, boron, iodine, phosphorus, selenium. Ignites when warmed with bismuth, carbon, chromium, lead, sulfur. Incandescent reaction with aluminum, cadmium, cobalt, iron, molybdenum, nickel, potassium, sodium, thorium, titanium, tungsten, uran-... 

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