Reactions of mercury(II) with 2-pyridinecarboxylic and 6-methyl-2-pyridinecarboxylic acids and corresponding esters. Crystal structures of [Hg(C5H4NCOO)2], [HgX2(C5H4NCOOPri)], X = Br or I and [HgCl2(MeC5H3NCOOEt)] | Publicación