TY - JOUR

T1 - A Series of Lanthanide(III) Coordination Polymers Based on 3,4-Dichloroisothiazole-5-Carboxylic Acid

AU - Sanzhenakova, E. a.

AU - Zaitsev, N. p.

AU - Smirnova, K. s.

AU - Pozdnyakov, I. p.

AU - Lider, E. v.

N1 - he work was supported by the Russian Science Foundation (agreement No. 23-23-10028, 20.04.2023) and the Government of the Novosibirsk Oblast’ of the Russian Federation (agreement No. r-65, 03.04.2023), project No. 23-23-10028. The authors also acknowledge the support of the Ministry of Science and Higher Education of the Russian Federation (projects Nos. 121031700321-3 (Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk) and FWGF-2021-0005 (Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, Novosibirsk)).

PY - 2025/3/28

Y1 - 2025/3/28

N2 - Europium(III), terbium(III), samarium(III), and gadolinium(III) coordination compounds with 3,4-dichloroisothiazole-5-carboxylic acid of general formula [Ln(H2O)2L2(OAc)]n are obtained. The complexes are characterized by a number of physicochemical techniques: elemental analysis, powder and single crystal X-ray diffraction (XRD), and IR spectroscopy. According to the single crystal XRD data, these complexes have the polymeric structure formed by the bridging function of acetate ions. In the case of the deprotonated isothiazole derivative, only oxygen atoms of the carboxyl group participate in coordination (two coordination modes: bidentate cyclic or monodentate). When studying the photoluminescent properties of the obtained europium(III) and terbium(III) complexes, it is found that the quantum yield of terbium(III) compounds exceeds 9 times this parameter for the europium(III) complex. The excited state lifetimes are in the millisecond range.

AB - Europium(III), terbium(III), samarium(III), and gadolinium(III) coordination compounds with 3,4-dichloroisothiazole-5-carboxylic acid of general formula [Ln(H2O)2L2(OAc)]n are obtained. The complexes are characterized by a number of physicochemical techniques: elemental analysis, powder and single crystal X-ray diffraction (XRD), and IR spectroscopy. According to the single crystal XRD data, these complexes have the polymeric structure formed by the bridging function of acetate ions. In the case of the deprotonated isothiazole derivative, only oxygen atoms of the carboxyl group participate in coordination (two coordination modes: bidentate cyclic or monodentate). When studying the photoluminescent properties of the obtained europium(III) and terbium(III) complexes, it is found that the quantum yield of terbium(III) compounds exceeds 9 times this parameter for the europium(III) complex. The excited state lifetimes are in the millisecond range.

KW - : lanthanide(III) complexes

KW - isothiazole derivative

KW - crystal structure

KW - photoluminescence

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-105001399575&origin=inward&txGid=50f2b94ebab8a5877c32bbf170e8f339

U2 - 10.1134/S0022476625030114

DO - 10.1134/S0022476625030114

M3 - Article

VL - 66

SP - 543

EP - 553

JO - Journal of Structural Chemistry

JF - Journal of Structural Chemistry

SN - 0022-4766

IS - 3

ER -