Heteroleptic Cobalt Complexes with Catecholate and 1,4-Diaza-1,3-butadiene Ligands

被引：0

作者：

Ershova, Irina V. ^{[1
]}

Arsenyev, Maxim V. ^{[1
]}

Yakushev, Ilya A. ^{[2
]}

Piskunov, Alexandr V. ^{[1
]}

机构：

[1] Russian Acad Sci, G A Razuvaev Inst Organometall Chem, 49 Tropinina Str, Nizhnii Novgorod 603950, Russia

[2] Russian Acad Sci, N S Kurnakov Inst Gen & Inorgan Chem, Leninskii prosp 31, Moscow 119991, Russia

来源：

MOLBANK | 2025年 / 2025卷 / 01期

关键词：

cobalt; redox-active ligand; catecholate; 1,4-diaza-1,3-butadiene; charge transfer; X-ray diffraction; cyclic voltammetry; UV-Vis-NIR spectroscopy; magnetic susceptibility; TRANSITION-METAL-COMPLEXES; DONOR-ACCEPTOR SYSTEMS; EXCITED-STATE; GROUND-STATE; COORDINATION; PT(II); SUSCEPTIBILITY; PLATINUM(II); REACTIVITY; NICKEL;

D O I：

10.3390/M1972

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Two new heteroleptic cobalt(II) complexes (3,6-Cat)Co(R-DAD) (where (3,6-Cat)2- is a dianion of 3,6-di-tert-butyl-o-benzoquinone, R-DAD is diisopropyl-1,4-diaza-1,3-butadiene (R = i-Pr (1)) or dicyclohexyl-1,4-diaza-1,3-butadiene (R = c-Hex (2)) have been synthesized and characterized in detail by IR, UV-Vis-NIR spectroscopy, and elemental analysis. The molecular structure of 1 was determined by X-ray diffraction analysis. Magnetic properties of 1 and 2 were measured both in a solid state and in a solution. According to the single-crystal X-ray diffraction analysis, the metal ion in 1 has a planar coordination environment, but magnetic susceptibility measurements of the microcrystalline samples of 1 and 2 indicate the formation of both forms with tetrahedral (d7, h.s., SCo = 3/2) and planar (d7, l.s., SCo = 1/2) coordination environments of the metal ion. Absorption spectra of crystalline samples of 1 and 2 possess intense absorption band in the NIR region. Electrochemical measurements of 1 and 2 were also performed.

引用

页数：9

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