Anion-Recognition Studies of a Rhenium(I) 4-Mercaptopyridine Compound and Its Ligand-Coupling Products

Abstract

The reaction of Re(CO) 5 Cl with 4-mercaptopyridine (4-PySH) led to the formation of [Re(CO) 3 (4-HPyS) 3 ]Cl (1), showing three hydrogen-bonding donors of 4-PySH ligands as well as a characteristic ligand-to-metal charge-transfer absorption at ca. 380 nm. In this regard, a variety of anions, i.

Rhenium fac-Tricarbonyl Bisimine Chalcogenide Complexes: Synthesis, Photophysical Studies, and Confocal and Time-Resolved Cell Microscopy

“…In the past few years, we have explored the impact of structural modifications and decoration of rhenium carbonyl complexes on their photophysical properties and on their penetration and subcellular distribution. ,,, We have exploited these complexes in correlative fluorescence and infrared imaging studies and more recently developed such complexes as organelle-targeting probes suitable for XRF mapping. ,,,, The most explored ancillary ligands X are halogen, O, N, or P donor-based ligands and much is known about their electronic structures and properties. Sulfur-based X ligands have received interest more recently, with substituted benzenethiolates, , mercaptopyridines, − cysteine and derivatives, thiosulfate, and methimazole as prominent examples. The corresponding complexes were investigated in structural studies or for their photophysical properties, cellular localization using XRF imaging, and cytotoxicity.…”