Deep-red phosphorescent organic–inorganic hybrid Mn(II) complexes based on 2-(diphenylphosphoryl)-N, N-diethylacetamide ligand. (1st July 2018)

• Record Type: Journal Article
• Authors: Artem'ev, Alexander V.; Berezin, Alexey S.; Brel, Valery K.; Morgalyuk, Vasily P.; Samsonenko, Denis G.
• Is Part Of: Polyhedron. Volume 148(2018)
• Page Start: 184
• Page End: 188
• Publication Date: 2018-07-01
• Subjects: Manganese -- Organic–inorganic hybrid complexes -- Phosphorescence -- Deep-red emission -- Mn(II) halides; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2018.04.012
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: Unprecedented organic–inorganic hybrid Mn(II) complexes, [Mn(L)3 ]MnHal4 (Hal = Cl, Br), showing bright deep-red phosphorescence at ambient temperature, are reported. These complexes have been synthesized in a high yield using straightforward reaction of Mn(II) halides with Ph2 P(O)CH2 C(O)NEt2 ligand. Abstract: Two unprecedented organic–inorganic hybrid complexes, [Mn(L)3 ]MnCl4 (1 ) and [Mn(L)3 ]MnBr4 (2 ), have been synthesized in 88–92% yields via reaction of Mn(II) halides with Ph2 P(O)CH2 C(O)NEt2 (L) in a 3:2 M ratio. X-ray diffraction analysis of 2 reveals that the metal ion of the [Mn(L)3 ] 2+ cation has an octahedral geometry, while the [MnBr4 ] 2− anion contains tetrahedrally coordinated Mn(II). At ambient temperature, the solid complexes 1 and 2 exhibit bright deep-red phosphorescence ( λ max em = 660 and 670 nm) with the lifetimes of 3–3.7 ms and photoluminescence quantum yields of 6% and 27%, respectively.