Mercury chloride, complexes with

Mercury-chloride complexes in dilute solutions. This slightly more difficult example will be useful in showing how to handle poorly conditioned systems of equations. It is assumed that mercury chloride HgCl2 is dissolved in pure water with a molality m = 10 5 mol kg-1. Given the equilibrium constants for chloride complex formation... 

Thiourea, mercury(II) chloride complexes with, 6 26 Thorium, powder by reduction of oxide with calcium, 6 50 removal of, in extraction of... 

Mercurated 1-acyloxy or 1-alkoxy-vinylphosphonates have been synthesized by the reaction of trialkyl phosphite-mercury (II) chloride complexes with ketene " or alkynyl ethers, respectively (equation 95). 

The environments of the mercury atom in the mercury(n) chloride complexes with uracil and dihydrouracil are basically the same. The mercury atoms are each short-bonded to two chlorine atoms, with Hg-Cl distances of 2.284 and 2.299 A, and the pseudo-octahedral environment is completed by contacts with two oxygen atoms at 2.71 or 2.88 A and two chlorine atoms from neighbouring HgClj units at 3.053—3.067 A. 

Interaction of the 3 2 complex with iron(III) chloride and calcium oxide, mercury oxide or silver oxide was usually too violent for preparative purposes, but zinc oxide was satisfactory. Reaction with water was violent. 

Mercury chloride thioether complexes have been oxidized to the corresponding sulfoxide complexes by treatment with hydrogen peroxide (76) [Eq. (30)]... 

The formed mercury dichloride is separated as a crystalline complex with dioxane. Since the starting arylmercury chlorides are easily prepared from diazonium salts, this method allows the conversion of anilines into aryltellurium trichlorides. 

Mercury(II) chloride reacts with alkah metal chlorides to form water soluble complex salts, such as KHgCls or K2HgCl4 ... 

The X-ray crystal structures of the related, though less complex, anticrown mercury-containing macrocycles 45 and 46 have also recently been reported. Complex 45 may form either 1 1 complexes with Br or I" or a 3 2 complex with Cr. In the case of the bromo derivative, crystallographic results reveal an infinite chain of alternating Br and 45 with each halide bridging between six Hg atoms, Hg- Br 3.07-3.39 A. It is postulated that the related 3 2 chloride complex exhibits a similar, though finite layered structure. The related pentameric species 46 forms... 

Dithiocoumarins (50) are generally prepared by treatment of thiocoumarins with phosphorus pentasulfide, isolation being best effected by formation of a mercury complex by addition of mercurous chloride, followed by decomposition of this complex with sodium sulfide. An alternative ring-closure approach involves heating o-allylphenols (49) with sulfur in... 

Isocyanide-mercury(II) chloride complexes when reacted with acetylacetone in the presence of triethylamine yield furan derivatives (290) (75CPB2842). The aminofuranones (291)... 

A common synthetic method is that of equation (9), where X = MeC02,168 PhS03,169 NO3170 or C104,171 and relies on the precipitation of silver chloride. A variation of this method is the synthesis of the ring complex (5), by the reaction (10).172 In other cases, the synthesis may involve mercury(II) salts or sodium salts (equations 11 and 12).173,174 Another useful synthetic method involves reaction of alkyl- or aryl-gold(I) complexes with carboxylic acids or acid anhydrides (equations 13-15).176,177... 

Metal complexes of several zinc, cadmium and mercury salts with 2-, 3- and 4-cyanopyridine have been reported.495 In none of the complexes was cyanide coordination observed. Zinc halides react with 3- and 4-cyanopyridine, but not with 2-cyanopyridine, to give 1 2 complexes which are assigned a monomeric tetrahedral structure on the basis of IR evidence. The cadmium halides also form 1 2 complexes with all the cyanopyridines, except cadmium chloride, which reacts with 2-cyanopyridine to give a 1 1 complex. The former contain... 

Mercury(II) chloride also forms a 1 1 complex with 3-methyloxa-diazole, which in a buffered solution forms a new complex with the electrophilic displacement product [Eq. (67)]. 

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