Chromophoric Nickel(II) and Cobalt(II) Complexes Based on New o-Iminobenzoquinones

Chromophoric Nickel(II) and Cobalt(II) Complexes Based on New o-Iminobenzoquinones Full article

Journal

Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
ISSN: 1070-3284

Output data

Year: 2026, Volume: 52, Article number : 6, Pages count : 15 DOI: 10.1134/S1070328425601499

Tags

transition metal, o-iminobenzoquinone, molecular structure, charge transfer, thermochemical properties

Authors

Pashanova K.I. ¹ , Kocherova T.N. ¹ , Druzhkov N.O. ¹ , Lazarev N.M. ¹ , Zolotukhin A.A. ¹ , Kovylina T.A. ¹ , Arsen’ev M.V. ¹ , Bogomyakov A.S. ² , Cherkasov A.V. ¹ , Piskunov A.V. ¹

Affiliations

1	Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences
2	International Tomography Center, Siberian Branch, Russian Academy of Sciences

Bis(ligand) coordination compounds of Ni(II) (I) and Co(II) (II) are synthesized from the o-iminobenzoquinone (6-((2,6-diisopropylphenyl)imino)-3-methoxy-4-(2,4,4-trimethylpentan-2yl)cyclohexa-2,4-dien-1-one). The molecular and crystal structures of complexes I and II are determined by single-crystal XRD (CIF files CCDC nos. 2494475 (I) and 2494474 (II)). The electronic structures of compounds I and II are refined by magnetic susceptibility measurements and density functional theory calculations. The electrochemical behavior of complexes I and II is studied by cyclic voltammetry. According to the data of electronic absorption spectroscopy, the synthesized compounds are metal complex chromophores intensely absorbing light (ε about 104 M–1 cm–1) in the visible and near-IR ranges due to the photoinduced intramolecular “ligand–ligand” charge transfer. A complex study of the thermal properties (thermal stability, volatility) using differential scanning calorimetry, thermogravimetry, and Knudsen effusion method for the Ni(II) (I) and Co(II) (II) complexes shows that they are appropriate for further testing in heterojunction optoelectronic devices with the vacuum layer sputtering technology.

Pashanova K.I. , Kocherova T.N. , Druzhkov N.O. , Lazarev N.M. , Zolotukhin A.A. , Kovylina T.A. , Arsen’ev M.V. , Bogomyakov A.S. , Cherkasov A.V. , Piskunov A.V.
Chromophoric Nickel(II) and Cobalt(II) Complexes Based on New o-Iminobenzoquinones
Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya. 2026. V.52. 6 :1-15. DOI: 10.1134/S1070328425601499 WOS Scopus OpenAlex

Пашанова К.И. , Кочерова Т.Н. , Дружков Н.О. , Лазарев Н.М. , Золотухин А.А. , Ковылина Т.А. , Арсеньев М.В. , Богомяков А.С. , Черкасов А.В. , Пискунов А.В.
Хромофорные комплексы никеля(II) и кобальта(II) на основе нового о-иминобензохинона
Координационная химия. 2026. Т.52. №6. С.399-416. DOI: 10.7868/S3034549926060017

Submitted:	Nov 24, 2025
Accepted:	Jan 13, 2026
Published print:	May 26, 2026

≡ Web of science:	WOS:001784903900007
≡ Scopus:	2-s2.0-105040366000
≡ OpenAlex:	W7162452084