G. Ferguson et al., 1,1'-FERROCENEDIYLBIS(2-PHENYLETHANEDIONE) - A 3-DIMENSIONAL NETWORK GENERATED BY SHORT C-H-CENTER-DOT-CENTER-DOT-CENTER-DOT-O HYDROGEN-BONDS, Acta crystallographica. Section C, Crystal structure communications, 52, 1996, pp. 2465-2468
Molecules of ferrocene-1,1'-diylbis(2-phenylethanedione), [Fe(C13H9O2)
(2)], lie across twofold rotation axes. One of the O atoms in each dik
etone unit acts as an acceptor of two intermolecular C-H ... O hydroge
n bonds. Hydrogen bonds employing cyclopentadienyl C-H bonds as donors
generate spirals of molecules around the 3(1) axes, while those emplo
ying phenyl C-H bonds as donors generate two-dimensional sheets.