1 CUF [2,2'-{(4,5-difluorobenzene-1,2-diyl)bis[(nitrilo-kappan)methylylidene]}bis{5-[2-(piperidin-1-yl)ethoxy]phenolato-kappao}(2-)]copper (II) 1.000 2 NUF [2,2'-{(4,5-difluorobenzene-1,2-diyl)bis[(nitrilo-kappan)methylylidene]}bis{5-[2-(piperidin-1-yl)ethoxy]phenolato-kappa O}(2-)]nickel (II) 0.957