Comprehensive Study of Mononuclear Osmium Complexes with Various Pyrene Ligands

• Published in: European journal of inorganic chemistry Vol. 2018; no. 47; pp. 5117 - 5128
• Main Authors: Zych, Dawid, Slodek, Aneta, Matuszczyk, Daniel, Golba, Sylwia
• Format: Journal Article
• Language: English
• Published: WEINHEIM Wiley 19.12.2018; Wiley Subscription Services, Inc
• Subjects: Ammonium nitrate; Cerium ammonium nitrate; Chemistry; Chemistry, Inorganic & Nuclear; Coordination compounds; Inorganic chemistry; Ligands; NCN‐cyclometalating pyrene ligands; Osmium; Photophysical properties; Physical Sciences; Science & Technology; Substituent effects; Theoretical study; DIRUTHENIUM COMPLEXES; Substituent effects; Theoretical study; RUTHENIUM; NCN-cyclometalating pyrene ligands; Photophysical properties; Osmium
• ISSN: 1434-1948; 1099-0682
• DOI: 10.1002/ejic.201801199

New mononuclear osmium complexes M1–M4 with various NCN‐cyclometalating pyrene ligands were synthesized and thoroughly characterized with particular emphasis on the nature of NCN‐cyclometalating pyrene ligands on the properties of target compounds. Structural properties were achieved by using the theoretical studies (DFT). Moreover, spectroscopic and theoretical studies (TD‐DFT) show the character of transitions and allow to understand the behavior of molecules during the stepwise oxidative titrations by using the cerium ammonium nitrate (CAN) solutions what resulted in M1+–M4+. The obtained experimental and theoretical data show the significant differences between the mononuclear osmium complexes M1–M4 in reference to used pyrene ligands. New mononuclear osmium complexes M1–M4 with various NCN‐cyclometalating pyrene ligands were obtained and thoroughly characterized with particular emphasis on the nature of NCN‐cyclometalating pyrene ligands on the properties of target complexes.