Canary

Cadmiumdl) sulphide, CdS, is a canary-yellow solid, precipitated by addition of hydrogen sulphide (or sulphide ion) to an acid solution... 

OtherTitanates. Nickel titanate [12035-39-1/, NiTiO, is a canary-yeUow soHd having a density of 73(00). When a mixture of antimony oxide, nickel carbonate, and titanium dioxide is heated at 980°C, nickel antimony titanate [8007-18-9] forms, which is used as a yellow pigment (95). 

As found in commerce, the cinchona alkaloids are not necessarily pure quinidine, for example, may contain up to 30 per cent, of dihydroquinidine. Working with carefully pmdfied specimens of the four chief cinchona alkaloids and their dihydro-derivatives, Buttle, Henry and Trevan found the results recorded in the table (p. 471) in tests with malaria in canaries. The figures in brackets represent the dose of quinine necessary to produce the same degree of protection as unit dose of the alkaloid named. To the results are also added the data found later by the same authors, with Solomon and Gibbs, for some of the transformation products (p. 449) of quinine and quinidine. The Roman numeral at the head of each column refers to the type formula on p. 470. 

The halogens are volatile, diatomic elements whose colour increases steadily with increase in atomic number. Fluorine is a pale yellow gas which condenses to a canary yellow liquid, bp — 188.UC (intermediate between N2, bp —195.8°, and O2, bp — 183.0°C). Chlorine is a greenish-yellow gas, bp —34.0°, and bromine a dark-red mobile liquid, bp 59.5° interestingly the colour of both elements diminishes with decrease in temperature and at —195° CI2 is almost colourless and Br2 pale yellow. Iodine is a lustrous, black, crystalline solid, mp 113.6°, which sublimes readily and boils at 185.2°C. 

This last reaction is typical of many in which F3CIO can act as a Lewis base by fluoride ion donation to acceptors such as MF5 (M = P, As, Sb, Bi, V, Nb, Ta, Pt, U), M0F4O, Sip4, BF3, etc. These products are all white, stable, crystalline solids (except the canary yellow PtFe ) and contain the [F2CIO] cation (see Fig. 17.26h) which is isostructural with the isoelectronic F2SO. Chlorine trifluoride oxide can also act as a Lewis acid (fluoride ion acceptor) and is therefore to be considered as amphoteric (p. 225). For example KF, RbF and CsF yield M [F4C10] as white solids whose stabilities increase with increasing size of M+. Vibration spectroscopy establishes the C4 structure of the anion (Fig. 17.29g). 

The bromination of 7-methoxy-l-methyl-j8-carboline (harmine) was studied by Fischer. He obtained a compound, Ci3Hi2Br4N20, which he called tetrabromoharmine, by the action of bromine water on a dilute sulfuric acid solution of harmine. The bromination of harmine was reinvestigated by Hasenfratz, who found that two products (both hydrobromides) could be isolated when harmine was treated with bromine in aqueous acetic acid. The major component formed colorless needles and was called bromoharmine hydrobromide (free base colorless needles, m.p. 275°), while the product obtained in lesser amount was a canary-yellow dihydrate which was named isobromoharmine hydrobromide (free base colorless needles, m.p. 

Kanarien-. canary, -farbe, /. canary color canarin. 

Kanarien-hirse, /. canary seed. -holz, n. canary wood, -samen, m. canary seed, -vogel, m. canary bird, canary. 

Solutions of biphenyl-2,2 -diamine (7.4 g, 40.2 mmol) in hot HOAc (40 mL) and phenanthrene-9,10-dione (8.3 g, 40 mmol) in HOAc (160 mL) were mixed and kept at 100°C for 2 h. After 12 h cooling, a canary yellow, crystalline powder was filtered off yield 11 g (77%). Recrystallization from excess boiling HOAc gave small, compact crystals mp 268-269 C. 

The success of the Keck telescopes led to a Spanish project Gran Telescopic Canarias (GTC) to build a 10-m telescope on the Canary Islands in La Palma. This telescope is similar to the Keck, and should be operational in 2006. 

Fig. 1. Major oceanographic features 1. Canary Current, 2. Gulf Stream, 3. North Atlantic Current, 4. Sargasso Sea, 5. North Atlantic Gyre, 6. Labrador Current, 7. Loop Current, 8. North Pacific Gyre, 9. South Equatorial Current, 10. Benguela Current, 11. Humboldt Current, 12. Antilles Current, 13. Florida Current, 14. Brazil Current, 15. Kuroshio, 16. Antarctic West Wind Drift.

Acknowledgment We gratefully acknowledge hnancial support by the Spanish MICIIN (CTQ2008-06806-C02-01/BQU) and Canary Islands ACIISI (PI 2007/022). 

Perhaps the most unusual observation in this study, other than the unique pigment profile in S. angulatus, is the simple and identical flavonoid profile in the Kenyan, Madagascaran, and Canary Islands specimens. A close relationship between the two varieties from East Africa is not difficult to appreciate. The occurrence of this profile in specimens from the Canary Islands, however, points to a closer relationship than the distance between these areas might suggest. There is no way to know, at least from the data presented, whether this represents a case of convergence of flavonoid biosynthetic capacities involving unrelated species, whether it points to a relationship based... 

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