Lead cluster magnesium

The cluster magnesium-anthracene adduct is extraordinarily active. Reactions are observed upon attempts to dissolve it even in such comparatively inert solvents as THF. CHyCH, toluene, or benzene. In these solvents, autohydrogenolysis takes places with the formation of dihydroan-thracenc and condensation products. The use as the solvent of CHyCH leads to polymers containing chlorine and use of THF leads to products of ring cleavage of the THF. 

What are the processes in magnesium-organic halide films that lead to stabilization of tetranuclear magnesium clusters ... 

Either of the two preceding compounds yields this acid when oxidised. It crystallises from glacial acetic acid in clusters of pale yellow needles, unmelted at 306° C. The amimnium salt forms fine, yellow needles the barium salt forms clusters of pale yellow needles the calcium salt forms short, orange-yellow prisms the silver salt is an amorphous, yellow precipitate the magnesium salt forms thin, yellow prisms the mercurous and mercuric satis are pale yellow, amorphous precipitates the lead salt is amorphous and deep yellow the potassium salt forms thin, golden-yellow prisms and the s ium salt crystallises in tufts of orange-yellow needles. 

It was assumed that reactions of nickelocene with lithium - or magnesium alkyls possessing -hydrogen proceed with the formation of corresponding alkenes. The activation of the alkene by the active dinickel species (NiCp)2) formed in the reaction leads to the formation of (cyclopentadienyl)(alkylidyne)trinickel clusters. 

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