Heteroleptic Ionic Copper(I) Complexes Based on Pyrazolo[1,5-a][1,10]phenanthrolines: Synthesis, Structure, and Photoluminescence | Sciact - CRIS-system of Boreskov Institute of Catalysis

Heteroleptic Ionic Copper(I) Complexes Based on Pyrazolo[1,5-a][1,10]phenanthrolines: Synthesis, Structure, and Photoluminescence Full article

Journal

Russian Journal of Coordination Chemistry
ISSN: 1070-3284 , E-ISSN: 1608-3318

Output data

Year: 2024, Volume: 50, Pages: 567–578 Pages count : 12 DOI: 10.1134/S1070328424600657

Tags

copper(I), heteroleptic coordination compounds, 1,10-phenanthroline, crystal structure, fluorescence, phosphorescence

Authors

Vinogradova K.A. ¹ , Rakhmanova M.I. ¹ , Taigina M.D. ^1,2 , Pervukhina N.V. ¹ , Naumov D.Yu. ¹ , Sannikova V.A. ³ , Filippov I.R. ^2,3 , Kolybalov D.S. ^2,4 , Vorob’ev A.Yu. ^2,3

Affiliations

1	Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2	Novosibirsk State University (National Research University), Novosibirsk, Russia
3	Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
4	Center for Collective Use, Siberian Ring Source of Photons (SKIF), Koltsovo, Russia

Heteroleptic copper(I) tetrafluoroborate complexes with pyrazolo[1,5-a][1,10]phenanthrolines (Ln, n = 1–3) and bis[(2-diphenylphosphino)phenyl] ether (POP) were synthesized and structurally characterized. The coordination compounds with the general formula [CuLn(POP)]BF4·Solv (n = 1, Solv = 0.5MeCN, complex I; n = 2, Solv = 0.5CH2Cl2, complex II; n = 3, Solv = 1.25Et2O, complex III·Et2O) were prepared by the reaction of CuBF4 with Ln and POP in organic solvents (MeCN/CH2Cl2/Et2O) at 1 : 1 : 1 molar ratio. Compound III·Et2O gradually loses solvate molecules to be converted to the complex [CuL3(POP)]BF4 (III). According to single-crystal X-ray diffraction data, the complexes (I, II, III·Et2O) are ionic; in complex cation [CuLn(POP)]+ the coordination environment of the copper atom is a distorted tetrahedron with CuN2P2 chromophore. The photoluminescence properties of the obtained complexes (I–III) were studied in the solid state and in solution. In the absorption spectra of the complexes, a charge transfer band is observed at 380–385 nm; excitation in this range gives rise to two emission bands at 480 and 650 nm in solution. In the solid state, the complexes show photoluminescence only in the red range (λmax = 600–610 nm) with microsecond lifetimes. It was found that complexes I and III with a more perfect tetrahedral environment have quantum yields an order of magnitude higher than the quantum yield observed for complex II.

Vinogradova K.A. , Rakhmanova M.I. , Taigina M.D. , Pervukhina N.V. , Naumov D.Y. , Sannikova V.A. , Filippov I.R. , Kolybalov D.S. , Vorob’ev A.Y.
Heteroleptic Ionic Copper(I) Complexes Based on Pyrazolo[1,5-a][1,10]phenanthrolines: Synthesis, Structure, and Photoluminescence
Russian Journal of Coordination Chemistry. 2024. V.50. P.567–578. DOI: 10.1134/S1070328424600657 WOS Scopus РИНЦ OpenAlex publication_identifier_short.sciact_skif_identifier_type

Submitted:	Apr 24, 2024
Accepted:	May 7, 2024
Published print:	Aug 1, 2024
Published online:	Nov 7, 2024

Web of science:	WOS:001352300400007
Scopus:	2-s2.0-85208981356
Elibrary:	74496597
OpenAlex:	W4404146449
publication_identifier.sciact_skif_identifier_type:	3622

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