2-(5-methylpyridin-2-yl)-5-[[6-[5-[[6-(5-methylpyridin-2-yl)pyridin-3-yl]methoxymethyl]pyridin-2-yl]pyridin-3-yl]methoxymethyl]pyridine 、 iron(II) bromide 生成 tetrakis(5,5''-[(2,2'-bipyridine-5,5'-diyl)bis(methyleneoxymethylene)]-5,5'''-dimethylbis[2,2'-bipyridine])tetrairon(II)