Coordination Networks Based on Multitopic Ligands and Silver(I) Salts: A Study of Network Connectivity and Topology as a Function of Counterion

We show that much like hydrogen bonding, Ag−N coordination bonds
can be reliably used
for the construction of supramolecular networks. From a
solid-state structural study of silver(I) complexes of multitopic ligands, we describe coordination networks
formed in the presence
of the weakly coordinating triflate
(CF3SO3-) counterion and the
noncoordinating hexafluorophosphate (PF6-) species. For complexes
prepared with silver(I) triflate, counterion
coordination is characteristic. Also, for the triflate complexes
presented, ditopic ligands form
one-dimensional, chainlike structures and tritopic ligands form
3-connected nets. A tetratopic
ligand also forms a 3-connected net due to the triflate-capped
silver(I) coordination. In
contrast, more varied network topology is seen in complexes of ditopic
ligands prepared with
silver(I) hexafluorophosphate.