Crystal Engineering of Organometallic Compounds through Cooperative Strong and Weak Hydrogen Bonds: A Simple Route to Mixed-Metal Systems

Abstract

Cooperative strong negatively charged and neutral O–H⋅⋅⋅O as well as weak charge-assisted C–Hδ+⋅⋅⋅Oδ− hydrogen-bonding interactions have been utilized for the crystal engineering of organometallic FeII/CoIII and FeII/CrI sandwich complexes. A section of the structure of [(η6-C6H6)2Cr]+{[(η5-C5H4COOH)(η5-C5H4COO)Fe][(η5-C5H4COOH)2Fe]0.5}− is shown in the picture.