Cerium(iii) complexes with azolyl-substituted thiophenolate ligands: synthesis, structure and red luminescence.

Autor: Ilichev VA; G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49 603950 Nizhny Novgorod Russian Federation ilichev@iomc.ras.ru., Silantyeva LI; G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49 603950 Nizhny Novgorod Russian Federation ilichev@iomc.ras.ru., Grishin ID; Nizhny Novgorod State University Gagarina Avenue 23/2 603950 Nizhny Novgorod Russian Federation., Rozhkov AV; Saint Petersburg State University Universitetskaya Emb. 7/9 199034 St Petersburg Russian Federation., Rumyantcev RV; G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49 603950 Nizhny Novgorod Russian Federation ilichev@iomc.ras.ru., Fukin GK; G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49 603950 Nizhny Novgorod Russian Federation ilichev@iomc.ras.ru., Bochkarev MN; G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49 603950 Nizhny Novgorod Russian Federation ilichev@iomc.ras.ru.; Nizhny Novgorod State University Gagarina Avenue 23/2 603950 Nizhny Novgorod Russian Federation.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2019 Aug 05; Vol. 9 (42), pp. 24110-24116. Date of Electronic Publication: 2019 Aug 05 (Print Publication: 2019).
DOI: 10.1039/c9ra03199e
Abstrakt: In order to obtain molecular Ce(iii) complexes which emit red light by f-d transitions the azolyl-substituted thiophenolates were used as the ligands. The thiophenolate Ce(iii) complexes were synthesized by the reaction of Ce[N(SiMe 3 ) 2 ] 3 with respective thiophenols 2-(2'-mercaptophenyl)benzimidazole (H(NSN)), 2-(2'-mercaptophenyl)benzoxazole (H(OSN)) and 2-(2'-mercaptophenyl)benzothiazole (H(SSN)) in DME media. The structures of the benzimidazolate (Ce(NSN) 3 (DME)) and benzothiazolate (Ce(SSN) 3 (DME)) derivatives were determined by X-ray analysis which revealed that the cerium ion in the molecules is coordinated by one DME and three anionic thiophenolate ligands. The lanthanum complex La(OSN) 3 (DME) has been synthesized similarly and structurally characterized. It was found that the solids of Ce(SSN) 3 (DME) and Ce(OSN) 3 (DME) exhibit a broad band photoluminescence peaking at 620 nm which disappears upon solvatation. With an example of OSN derivatives it was proposed that this behaviour is caused by the blue shift of the f-d transition of Ce 3+ ions.
Competing Interests: There are no conflicts to declare.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
Externí odkaz: