Organometallic π-tweezers, NCN pincers, and ferrocenes as molecular Tinkertoys in the synthesis of multiheterometallic transition-metal complexes

This review describes the synthesis. reaction chemistry, structures, and bonding of early-late heterodi-, heterotri-, and heterotetrametallic transition-metal complexes by applying the molecular Tinkertoy approach. As connecting units between the different metal atoms, pi-conjugated carbon-rich organic and/or inorganic Groups can be used. The electrochemical behavior of such one-dimensional molecular wire molecules, coordination polymers, starlike structures, and dendritic oriented transition-metal species, respectively, is presented as well.