Chemistry, Physical and Theoretical Chemistry, Electrochemistry, Catalysis
21
Scopus Publications
Scopus Publications
Synthesis, Structure, and Magnetic Properties of the Binuclear Cobalt Complex [Co2(μ‑O2PPh2)2(Bpy)4](BF4)2 A. A. Kagilev, Z. N. Gafurov, I. K. Mikhailov, I. F. Sakhapov, A. O. Kantyukov, A. B. Dobrynin, V. I. Morozov, R. B. Zaripov, A. S. Bogomyakov, O. B. Babaeva, O. G. Sinyashin, D. G. Yakhvarov Russian Journal of Coordination Chemistry Koordinatsionnaya Khimiya, 2025 Abstract The reaction of cobalt tetrafluoroborate hexahydrate with 2,2'-bipyridine (Bpy) and diphenylphosphinic acid (Ph2P(O)OH) gave a new binuclear cobalt(II) complex [Co2(µ-O2PPh2)2(Bpy)4](BF4)2 featuring a sterically demanding bridging ligand. The complex was characterized by various physicochemical methods, and the crystal structure of the complex was determined by X-ray diffraction. Analysis of the X-ray diffraction structure of the complex showed that the cobalt ions have a distorted octahedral coordination and are linked by bridges through two {µ-O2PPh2} moieties. The data of ESR spectroscopy and magnetochemical measurements indicate the presence of a weak antiferromagnetic interaction between the cobalt ions in the molecule.
Design of an Asymmetric PCN Pincer Nickel(II) Complex Based on 2,3,4,5-Tetraphenyl-1-monophosphole I. K. Mikhailov, Z. N. Gafurov, A. A. Kagilev, A. O. Kantyukov, I. F. Sakhapov, E. M. Zueva, A. A. Zagidullin, O. G. Sinyashin, D. G. Yakhvarov Russian Journal of Coordination Chemistry Koordinatsionnaya Khimiya, 2025 A new asymmetric PCN pincer ligand, N-ethyl-N-[3-((2,3,4,5-tetraphenyl-1H-phosphol-1-yl)methyl)benzyl]ethanamine, combining different donor groups (amino and phosphole), has been synthesized. The ligand was obtained in four steps with a good overall yield (49%) from commercially available reagents. Based on this ligand, the design of an asymmetric nickel(II) pincer complex was proposed. Quantum chemical calculations of the molecular structure of the complex indicate the formation of weak Ni–P bonds and reveal a weak trans influence of the phosphole group relative to the amino group, which distinguishes this complex from its analogs, PCN complexes based on dialkylphosphines.
Electrocatalytic proton reduction by nickel(II) diarylamido/bis(phosphine) PNP ionic pincer complex Zufar N. Gafurov, Ilya K. Mikhailov, Alexey A. Kagilev, Aidar M. Kuchkaev, Il’yas F. Sakhapov, Artyom O. Kantyukov, Igor A. Litvinov, Evgenii I. Gutsul, Vasilisa A. Kulikova, Vladislava A. Kirkina, Elena S. Shubina, Natalia V. Belkova, Oleg G. Sinyashin, Dmitry G. Yakhvarov Inorganica Chimica Acta, 2025
Nickel(II) Complex with the Bis(phenolate) Pincer N-Heterocyclic Carbene Ligand: Synthesis, Structure, and Properties Z. N. Gafurov, I. K. Mikhailov, A. A. Kagilev, I. F. Sakhapov, A. O. Kantyukov, E. M. Zueva, A. B. Dobrynin, A. A. Trifonov, D. G. Yakhvarov Russian Journal of Coordination Chemistry Koordinatsionnaya Khimiya, 2024 Abstract The nickel(II) complex Ni(L)Py (I) (L is 1,3-bis(3,5-di-tert-butyl-2-phenolato)-5,5-dimethyl-(4,6-dihydropyrimidin-2-ylidene)) containing the dianionic bonded N-heterocyclic carbene (NHC) bis(phenolate) ligand is synthesized. In the presence of a stronger base (4-dimethylaminopyridine (DMAP)), the exchange reaction occurs with the replacement of pyridine in complex I by the DMAP molecule to form complex Ni(L)(DMAP) (II), the crystal structure of which is determined by XRD. The synthesized compounds are characterized by elemental analysis, mass spectrometry, and NMR spectroscopy. The spectral characteristics of the compounds are studied.