CuCI Copper chloride

In 1955, Terent ev and Mogilyanskii reported the catalytic oxidative coupling of aniline to azobenzene with a yield of 88%, mediated by copper chloride in pyridine (which acts as both a metal ligand and solvent) in the presence of molecular oxygen [1]. This system was subsequently used for the generation of various conjugated and nonconjugated main-chain aromatic azo polymers from primary aromatic diamines [2]. In contrast, the use of CUCI-O2 with phenol produces tars [3] as a result of the inherent properties of this reactant. Indeed, while the metal salt produces iV-centered aniline radicals that dimerize to form azobenzene... 

Copper chloride (CuCy-doped polyaniline (PANI)/multi-walled carbon nanotubes (MWCNTs) nanocomposite (PANI C2 CNT), CuCy doped PANI (PANI C2) and pure PANI were synthesized by in-situ oxidative polymerization method. The maximum specific capacitance of 724 F/g... 

Figure 7 shows the response of polyaniline modified with copper chloride (CuCy and unmodified polyaniline to 10 ppm H2S. The unmodified film shows essentially no change in resistance, while the modified polyaniline film shows a resistance decrease of over four orders of magnitude. 

Lewis acids (dicthylaluminum chloride, ethyl aluminum scsquichloridc) have been used in conjunction with ATRP to provide greater alternating tendency in S-MMA copolytnerization.519 However, poor control was obtained because of interaction between the catalyst (CuCI/dNbpy) and the Lewis acid. Better results were obtained by RAFT polymerization/10 Copper catalysts, in particular Cu(lI)Br/PMDETA, have been shown to coordinate monomer but this has negligible influence on the outcome of copolymerization/6 ... 

The main species responsible for the blue flame from such a composition is cuprous chloride, CuCI hence the use of this salt together with the chlorine producer (hexachloroethane) and a source of extra copper (pyrotechnic copper powder). The cellulose dust acts as a moderator to control the burning rate of the pressed composition. 

This compound is less stable al room temperature than coppcrfll) oxide. CuO. although CuyO occurs in nature (as cuprite). It is the stable oxide above I 026°C. It is prepared by fusion of copper(l) chloride, CuCI with sodium carbonate. NayCOj. In ils crystal, each copper atom has... 

The blue color in fireworks is often achieved by heating copper(I) chloride (CuCI) to about 1200°C. The hot compound emits blue light having a wavelength of 450 nm. What is the increment of energy (the quantum) that is emitted at 4.50 X 102 nm by CuCI ... 

When copper is added to a solution of cupric chloiide in strong hydrochloric acid a reaction occurs which results in the formation of a colorless solution containing cuprous chloride complex ions suc h as CuCI, ... 

The oxyhydrochlorination catalyst was prepared according to the procedure of Conner et al. [9]. The material was prepared in nonaqueous solvents by successive impregnation of metal chloride salts onto a silica support. A saturated solution of copper (I) chloride in acetonitrile was sorbed into fumed silica (325 mVgram). The acetonitrile was then removed under reduced pressure. A solution of potassium chloride and lanthanum chloride 1n formic acid was added to the cuprous chloride coated silica. The formic acid was removed under reduced pressure to produce the layered oxyhydrochlorination catalyst. The weight composition of the final catalyst was 41.7% CuCI, 37.5% Si02, 11.5% KC1, and 9.4% LaClj. The catalyst could be activated in a stream of hydrogen chloride at 300°C for ten minutes. 

The enthalpy of atomization of copper docs not differ at aD for the two compounds, and the atomization of chlorine adds only a small difference for the second mole of chlorine. The major energy cost for CuCl2 >s the second ionization energy of copper which is compensated by the electron affinity to form the second chloride ion and especially the lattice energy. Since the electron ionized to form Cu2 is a d electron and does not break a noble gas structure, IE2 is not excessive, and both CuCI and CuCl2 are stable compounds. 

Cuprous chloride CuCI Bichloride of copper dlchloride of copper subchloride of copper. 

Ammonium copper(ll) chloride dihydrate CuCI,-2NH,CI-2H,0 10060-13-6 277.466 blue-grn tetr cry llOdec 1.993 s H,0, FtOH... 

Ammonium copper(ll) chloride CuCI,-2NH3CI 10060-13-6 241.436 yel hyg orth cry s/O... 

A number of complexes that appear to be 4-coordinate are more accurately described as 6-coordinate. Although (NH4)2[CuCLi] is frequently cited as having a square-planar [CuCy ion, the ions in the crystal are packed so that two more chlorides are above and below the plane at considerably larger distances in a distorted octahedral structure. The Jahn-Teller effect (Section 10.5) accounts for this distortion. Similarly, [Cu(NH3)4]S04 H2O has the ammonias in a square-planar arrangement, but each copper is also connected to more distant water molecules above and below the plane. 

CAS 7758-89-6 EINECS/ELINCS 231-842-9 Synonyms Copper (I) chloride Copper monochloride Cuprous chloride Cuprous dichloride Dicopper dichloride Empirical CICu Formula CuCI... 

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