Cluster self-assembly and anion binding by metal complexes of non-innocent thiazolidinyl-thiolate ligands
Madeline N Riffel1, Lukas Siegel1,2, Allen G Oliver1
1Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, USA. etsui@nd.edu.
Abstract:
ZnII and FeII chloride complexes of a di(methylthiazolidinyl)pyridine ligand were deprotonated to form the corresponding thiolate complexes supported by redox-active iminopyridine moieties. The thiolate donor groups are nucleophilic and reactive toward oxidants, electrophiles, and protons, while the pendant thiazolidine rings are available for hydrogen bonding. Anion exchange with the weakly-coordinating triflate anion resulted in self-assembly of the iminopyridine complexes to form a trimeric [M3S3] cluster. Hydrogen bonding closely associates anions with this trimetallic core.
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