HexaChloroplumbate, ammonium

Oxidations of the hydroxamic esters have been carried out in good yields using lead tetraacetate ammonium hexachloroplumbate(IV), peroxides and silver oxide ". Cooley and coworkers reported that only iV,Al -diacyl-iV,A -dialkoxyhydrazines... 

Preparation of Lead Tetrachloride. Thoroughly mix 1 g of ammonium hexachloroplumbate with 3 g of concentrated sulphuric acid cooled to 0 °C. Separate the heavy drops of oily liquid formed from the reaction mixture. What are these oily drops Write the equations of the reactions. 

Pyridinium hexachloroplumbate (IV), which is more resistant to heat and moisture than the ammonium salt (larger, less polarized cation) may be prepared by substituting a solution of 12g of pyridine in 80ml of SM hydrochloric acid for the ammonium chloride solution used above. 

SiFg -, is particularly so. Ammonium hexachloroplumbate(IV) is precipitated when NH4CI is added to the solution produced by passing Clg into a suspension of PbClg in HCl ... 

In these reactions half the lead is reduced to metallic lead and may thus be considered a loss. To avoid this, compounds of quadrivalent lead such as lead(iv) acetate, and potassium or ammonium hexachloroplumbate, may replace the lead(n) salts,466 and their use with Grignard reagents or organo-... 

The hexachloroplumbate salts MaPbClg represent a convenient and stable source of lead(IV). A solution of H2PbCl6 is easily produced by the action of chlorine upon a fine suspension of lead(II) chloride in concentrated hydrochloric acid. Subsequent addition of solutions of either ammonium or potassium chloride produces the corresponding M2PbCl6 salt as lemon yellow crystals. The alkali hexachloroplumbates are isomorphous with the hexachlorostannates. 

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