TY - JOUR

T1 - Synthesis, Structure, and Photoluminescent Properties of Copper(I) Complexes with N-(diphenylphosphino)-4-Phenylpyrimidineamine

AU - Тайгина, Марина Дмитриевна

AU - Рахманова, Мариана Ивановна

AU - Сухих, Таисия Сергеевна

AU - Vinogradova, K. A.

N1 - The authors acknowledge the support of the Ministry of Science and Higher Education of the Russian Federation (projects No. 125021302133-1, 125021302132-4).

PY - 2025/7

Y1 - 2025/7

N2 - Complexes of copper(I) iodide, bromide, and chloride with N-(diphenylphosphino)-4-phenylpyrimidineamine (L) are synthesized. The [Cu2L2I2] (I), [Cu2L2I2]·2.3MeCN (II), [Cu2L2Br2] ·1.5MeCN·0.5CH2Cl2 (III), and CuLCl (IV) complexes are prepared by reactions of the corresponding copper(I) salts and L in organic solvents in the 1:1 molar ratio. It is shown by XRD that II and III have a binuclear molecular structure; the L molecule is coordinated to copper atoms in a bidentate cyclic mode via P and N1 atoms of the pyrimidine ring; the distorted tetrahedral environment of Cu atoms is supplemented by halide ions; the coordination polyhedron is CuNPI2 (II) and CuNPBr2 (III). The structure of II has two crystallographically independent molecules containing a {Cu2I2} fragment in rhombus and butterfly conformations, respectively. In the molecule of II, all {Cu2Br2} fragments have a planar rhombic structure. Solid-state photoluminescent properties of L and I, III, IV complexes are studied. The I, III, IV complexes demonstrate single-band red emission with a microsecond lifetime (λexc = 400 nm) at 635 nm, 625 nm, and 640 nm, respectively. The L compound exhibits solid-state fluorescence with two emission bands at 400 nm and 480 nm.

AB - Complexes of copper(I) iodide, bromide, and chloride with N-(diphenylphosphino)-4-phenylpyrimidineamine (L) are synthesized. The [Cu2L2I2] (I), [Cu2L2I2]·2.3MeCN (II), [Cu2L2Br2] ·1.5MeCN·0.5CH2Cl2 (III), and CuLCl (IV) complexes are prepared by reactions of the corresponding copper(I) salts and L in organic solvents in the 1:1 molar ratio. It is shown by XRD that II and III have a binuclear molecular structure; the L molecule is coordinated to copper atoms in a bidentate cyclic mode via P and N1 atoms of the pyrimidine ring; the distorted tetrahedral environment of Cu atoms is supplemented by halide ions; the coordination polyhedron is CuNPI2 (II) and CuNPBr2 (III). The structure of II has two crystallographically independent molecules containing a {Cu2I2} fragment in rhombus and butterfly conformations, respectively. In the molecule of II, all {Cu2Br2} fragments have a planar rhombic structure. Solid-state photoluminescent properties of L and I, III, IV complexes are studied. The I, III, IV complexes demonstrate single-band red emission with a microsecond lifetime (λexc = 400 nm) at 635 nm, 625 nm, and 640 nm, respectively. The L compound exhibits solid-state fluorescence with two emission bands at 400 nm and 480 nm.

KW - copper(I) coordination compounds

KW - synthesis

KW - N-(diphenylphosphino)-4-phenylpyrimidineamine

KW - crystal structure

KW - fluorescence

KW - phosphorescence

UR - https://www.scopus.com/pages/publications/105012612199

UR - https://www.elibrary.ru/item.asp?id=82649088

U2 - 10.1134/S0022476625070042

DO - 10.1134/S0022476625070042

M3 - Article

VL - 66

SP - 1369

EP - 1384

JO - Journal of Structural Chemistry

JF - Journal of Structural Chemistry

SN - 0022-4766

IS - 7

M1 - 4

ER -