Metal Complexes as Receptors

摘要: The incorporation of hydrogen-bond donor or acceptor groups into ligands followed by their coordination to inert transition metals has proven be a successful methodology for creating unique metal complex receptors wide variety anions, some neutral molecules, and limited number cations. ion can participate in binding guest indirectly via second-sphere directly simultaneous first- coordination. This chapter contains two major sections that outline the design strategies describe complexes function as (i) (ii) cations, (iii) anions. Under heading focus is on increasing complexity with respect targeted beginning simple species such H2O NH3 featuring biologically important molecules DNA nucleobases. section anion structured shed light different avenues used structural features these systems. A common theme idea host–guest assemblies may have complicated structures, but themselves do not require tedious synthetic routes prepare center facile. Thus, combination chemistry noncovalent interactions hydrogen bonding π-stacking viewed powerful tool molecular recognition. state art advanced enough allow targeting specific guests tailoring both metal–ligand interactions. Keywords: transition complex; ligand; molecular recognition; anion recognition; second-sphere coordination; hydrogen bonding; π-stacking