Six magnesium alcoholates from bifunctional alcohols HO-(CH2)(n)-OH, n
= 2...6, 8 were prepared and characterized. The thermal decomposition
leads to magnesium oxide with a distinct particle size as a function
of the alcohol chain length n. The final decomposition temperature to
MgO is much lower as compared to inorganic precursors, for example, ma
gnesium carbonate. It was shown for these diolates that the thermal de
composition under air most likely includes the formation of Mg-OH grou
ps; the thermal intermediates can be described as alkoxy/hydroxy speci
es.