Cupric perchlorate

METHOD 4 [110, 111] - guaiacol and cupric perchlorate (Cu(CI04)2)-ascorbic acid (that s vitamin C, bubba ) are mixed in an appropriate solvent under oxygen atmosphere in a flask to give about 30% catechol. 

Methylamine Cupric Perchlorate Complex. (MeNH2)4Cu(Cl04)2, C4H2od2C uN408, mw 386.72, N 14.49%. It is prepd by the interaction of methylamine and Cu(II)perchlorate and is obtd as blue crysts which expld in 30secs at 247°... 

Nucleophiles, when they are used in the presence of cupric perchlorate, capture the cation-radicals initially formed. Instead of benzidines, the para-substituted dialkylanilines were obtained. In this a manner, A,A-dialkylanilines with halo or thiocyanato moieties in para positions were prepared in good yields under the same (simple) conditions. Scheme 7.13 illustrates the sequence of the transformations observed. The products are useful intermediates in the synthesis of dyes, drugs, and color cinema formulations. 

Ammonium acetate in acetic acid converts 55a into the imine (59). The hydrogen-bonded, resonance-stabilized form shown is consistent with its high melting point and intense color. The structure is further supported by the ability of the naphthalene analog, which is more soluble, to form a stable complex with cupric perchlorate. ... 

Cm++. Information about the activation of hydrogen by Cu++ is derived largely from kinetic measurements on the cupric perchlorate catalyzed hydrogenation of dichromate [Equation (4)]. The rate-law for this reaction is of the form... 

Cupric perchlorate (6H2O) [13770-18-8] M 370.5. Crystd from distilled water. 

Copper(ll)mono(ethylenediamine) tetraaquo Perchlorate, [Cu(en)(OH)4 ] (C104) 2 dk bluish-violet ads, expl violently on heating. Was prepd by evapg an aq soln of cupric perchlorate and ethylenediamine in molecular proportions Rtfs 1) Beil 4, [678] 2) G.T. Morgan F.H. Burstall, JCS 1926, 2026-27... 

Solid luminescent materials, with identical emission kmax values, were also obtained on the reaction of 1,6-hexane dithiol with cupric perchlorate. The origins of the luminescence in both the film and solid appear to be the same, although this is not yet clearly understood. It is likely that they are associated with Cu-Cu interactions in what is essentially a polynuclear structure. 

Cupric perchlorate Cu(C104)2.—The perchlorate has also been described.14... 

Electrolysis at copper electrodes of cupric perchlorate with 1,5-cyclooctadiene in methanol yields well-defined crystals of an air-stable cuprous complex (CgHi2)2CuC104 (390). The C=C stretching band at 1660 cm in the diene is replaced by two bands at 1638 and 1595 cm" in the complex, suggesting nonequivalent coordination of the double bonds. As with the silver-olefin complexes (492) there is a dependence... 

Cupric perchlorate.—G. S. Serullas prepared large blue deliquescent... 

Its expl props were not investigated (Refs 2 5) Cupric Perchlorates. No anhyd salt was prepd, but its hepta-, hex a-, tetra- and di-hydrates are known (Ref 5). The most common seems to be hexa-hydrate, Cu(CI0 ).6H20. It was first prepd in 1831 by Serullas by heating CuO with perchloric acid. Portillo Alberola prepd it in 1930 (Ref 3) by treating Cu carbonate with 30% perchloric acid. The ppt, W ashed with ale ether and dried in vacuum over PjOg, was It blue in color, mp 82° and decomposed at 120° (See also Refs 4 5) According to Ellern (Ref 6), a match can be produced which uses Cu (or Sr) perchlorate dissolved in triethanolamine and combined with cellulose acetate - with the regular matchheads affixed... 

Cu(en).4H20]C10 dark bluish-violet ndls mp — decomp quietly explodes violently when heated with oxidizing agents slightly hygroscopic but stable in air sol in. w in sol in ale and most org solvents. It can be prepd by concentrating an aq soln of ethylenediamine (1 mole) with cupric perchlorate (1 mole) (Refs 1 2)... 

RESOLUTION Cupric perchlorate. 2,3 4,5-Di-0-tsopropylidenc-2-keto-L-gulomc acid hydrate. Tartaric acid. 

Cupric perchlorate hexahydrate [10294-46-9 (hydrate), 13770-18-8] M 370.5, m 230-240", pIG -2.4 to -3.1 (for HCIO4). Crystallise it from distilled water. The anhydrous salt is hygroscopic. 

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