I Compounds

Preparation of Copper(I) Oxide. Dissolve 2.5 g of copper vitriol (copper sulphate pentahydrate) in 15 ml of warm water and add 1.5 g of glucose. Heat the solution and rapidly add 2.5 ml of a 20% sodium hydroxide solution to it. Stir the mixture and let it stand for an hour. Wash the precipitate with distilled water. Write the equations of the reactions. [Pg.251]

Properties of Copper(I) Oxide. Test the reaction of the copper(I) oxide obtained with solutions of acids and ammonia. To do this, place the copper (I) oxide into four test tubes. Treat the substance in the first tube with concentrated sulphuric acid while heating it. Watch what happens. What is obtained in the solution and in the precipitate [Pg.251]

Add concentrated hydrochloric acid dropwise to the second tube until the appearing white precipitate dissolves. What is its composition Explain the dissolving of the precipitate in an excess of this acid. Keep the solution for the following experiment. [Pg.251]

Dissolve the copper(l) oxide in the third and fourth tubes in a 25% ammonia solution. Rapidly close one of them tightly with a stopper, leave the other one open, and vigorously shake both tubes. Does the colour of the solution change Explain what you observe. Write the equations of the reactions. [Pg.251]

Consider the structure of the copper(l) ammine complex from the viewpoint of the valence bond theory. [Pg.251]

Mercury [) nitrate, HgaCNOsji. Forms dihydrate from aqueous solution (Hg plus cold dilute HNO3). Useful source of mercury(I) compounds. [Pg.255]

In contrast to the + 2 state, copper(I) compounds are less frequently coloured and are diamagnetic, as expected since the 3d level is full. However, the copper(I) ion, unlike copper(II), is unstable in aqueous solution where it disproportionates into copper(II) and copper(O) (i.e. copper metal). [Pg.414]

This copper(I) compound, unlike the above, is soluble in water and therefore in the presence of water liberates copper and forms a copper(II) compound ... [Pg.416]

Mercury(I) compounds in solution give a white precipitate with chloride ion. blackened by ammonia (p. 437) alkalis and reducing agents generally produce black or grey mercury from mercury(I) compounds. [Pg.439]

Example Sn/.ukl et. al. used a reaction strategy to expand the C(gj nioiccii le, biickrn in stcrfii 1 Icren e, by adding divalen t carbon ct uiv-alents. Adding ph eii yl dia/.omethan e to CVdl- (I)- followed by the loss of molecular nitrogen, results in aC(,i compound. [Pg.53]

Table 1. Solubility and Solubility Products of Silver(I) Compounds...

SHver(I) compound CAS Registry Number Aqueous solubihty, g/L H2O K " sp... [Pg.88]

Thallium(1) salts of tetrahydridoborate and aluminate are obtained from a T1(I) compound, eg, ethoxide, perchlorate, or nitrate, and LiBH or LiAlH ia ether. ThaIlium(I) tetrahydridoborate [61204-71 -5] TIBH, is unstable at 40°C, evolving diborane. Thallium(I) tetrahydridoaluminate... [Pg.469]

Tha.lliuin(I) Compounds. Carboxyhc anhydrides can be prepared by the reaction of acyl or aroyl haUdes in ether with thaHium(I) carboxjiates (26) ... [Pg.470]

The normal preparation of organochromium(0) compounds is iadirect. First the organochromium (I) compound is formed... [Pg.134]

The main by-products of the Ullmaim condensation are l-aniinoanthraquinone-2-sulfonic acid and l-amino-4-hydroxyanthraquinone-2-sulfonic acid. The choice of copper catalyst affects the selectivity of these by-products. Generally, metal copper powder or copper(I) salt catalyst has a greater reactivity than copper(Il) salts. However, they are likely to yield the reduced product (l-aniinoanthraquinone-2-sulfonic acid). The reaction mechanism has not been estabUshed. It is very difficult to clarify which oxidation state of copper functions as catalyst, since this reaction involves fast redox equiUbria where anthraquinone derivatives and copper compounds are concerned. Some evidence indicates that the catalyst is probably a copper(I) compound (28,29). [Pg.310]

NOTE 1. Temperature range is 298-1,000K except for S, Br, and I compounds. [Pg.385]

The compounds to be considered are the derivatives FIO2 and F3IO and the derivatives FIO3, F3IO2 and F5IO. Note that, unlike Cl, no I compound FTO has been reported and that, conversely, F5IO (but not F5CIO) has been characterized. [Pg.881]

In crystalline mercury(I) compounds, instead of the sequence of alternate M+ and X expected for MX compounds, Hg-Hg pairs are found in which the separation, though not constant, lies in the range 250-270 pm which is shorter than the Hg-Hg separation of 300 pm found in the metal itself. [Pg.1213]

Mercury(I) compounds are diamagnetic, whereas the monatomic Hg+ ion would have a d s configuration and so be paramagnetic. [Pg.1214]

In order to understand the formation and stability of mercury(I) compounds it is helpful to consider the relevant reduction potentials ... [Pg.1214]

There are a number of reactions between ylides and ADE in Section IV.I. Compound 1 has been found to be completely inert to acetylenic esters over a... [Pg.48]

Cupro-. cuprous, copper(I), cupro-. -chlorid, n. cuprous chloride, copper(I) chloride, -cy-aniir, n. cuprous cyanide, copper(I) cyanide cuprocyanide, cyanocuprate(I). -jodid, n. cuprous iodide, copper(I) iodide, -mangan, n. cupromanganese. -oxyd, n. cuprous oxide, copper(I) oxide, -salz, n. cuprous salt, cop-per(I) salt, -suifocyantir, n. cuprous thiocyanate, copper (I) thiocyanate, -verbin-dUDg, /. cuprous compound, copper(I) compound. [Pg.94]

Goldoiydul, n. aurous oxide, gold(I) oxide, -verbindung, /. aurous compoimd, gold(I) compound. [Pg.191]

Kupferozydul, n. cuprous oxide, copper(I) oxide, -hydrat, n. cuprous hydroxide, cop-per(I) hydroxide, -salz, n. cuprous salt, copper (I) salt, -verblndung,/. cuprous compound, copper(I) compound. [Pg.265]

Merkuro-. mercurous, mercury (I), -azetat, n. mercurous acetate. mercury(I) acetate, -chlorld, n. mercurous chloride, mercury(I) choride. -chrom, n. (Pharm.) mercuro chrome, -jodid, n. n ercurous iodide, mer-cury(I) iodide. -nitrat, n. mercurous nitrate, mercury(I) nitrste. -oxyd, n. mercurous oxide, mercury(I) oxide, -salz, n. mercurous salt, mercury (I) salt, -sulfat, n. mercurouasulfate, mercury(I) sulfate, -sulfid, n. mercurous sulfide, mercury(I) sulfide, -verbindung, /. mercurous compound, mercury (I) compound. [Pg.295]

Thallo-. thallous, thalhum(I). -bromid, a, thallous bromide, thalliuro(I) bromide -chlorat, n. thallous chlorate, thallium(I) chlorate, -chlorid, n. thallous chloride, thallium I) chloride, -fluorid, n. thallous fiuoride. thal lium(I) fiuoride. -ion, n- thallous ion, thal lium(I) ion. -jodat, n. thallous iodate. thal liura(I) iodate. -jodid, n. thallous iodide. thallium(I) iodide, -salz, n. thallous salt. thallium(I) salt, -sulfat, n. thallous aulfate. thailium(I) sulfate, -verbindung, /. thallous compound, thallium(I) compound. [Pg.444]

The latter approach is used in the enantioselective determination of a Phase I metabolite of the antihistaminic drug, terfenadine. Terfenadine is metabolized to several Phase I compounds (Fig. 7-13), among which the carboxylic acid MDL 16.455 is an active metabolite for which plasma concentrations must often be determined. Although terfenadine can be separated directly on Chiralpak AD - an amy-lose-based CSP - the adsorption of the metabolite MDL 16.455 is too high to permit adequate resolution. By derivatizing the plasma sample with diazomethane, the carboxylic acid is converted selectively to the methyl ester, which can be separated in the presence of all other plasma compounds on the above-mentioned CSP Chiralpak AD [24] (Fig. 7-14). Recently, MDL 16.455 has been introduced as a new antihistaminic drug, fexofenadine. [Pg.196]

Mechanistically, these diazonio replacement reactions occur through radical rather than polar pathways. In the presence of a copper(I) compound, for instance, it s thought that the arenediazonium ion is first converted to an aryl radical plus copper(II), followed by subsequent reaction to give product plus regenerated copper(l) catalyst. [Pg.943]

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