Crystal structure of μ-carbonyl-1:2κ2C:C-carbonyl-1κC-(1η5-cyclopentadienyl)iodido-2κI-[μ-2-(pyridin-2-yl)ethene-1,1-diyl-1κC1:2κ2N,C1]ironpalladium(Fe—Pd) benzene monosolvate

The reaction of Cp(CO)2FeI with 2-ethynylpyridine under Sonogashira conditions [5% PdCl2(PPh3)2, 10% CuI, THF–NEt3 (2:1)] afforded the title binuclear μ-pyridylvinylidene FePd complex (FePd1) as a benzene solvate, [FePd(C5H5)(C7H5N)I(CO)2]·C6H6, in a very low yield rather than the expected iron o-pyridylethynyl complex Cp(CO)2Fe—C[triple-bond]C-(2-C5H4N). The Fe and Pd atoms in FePd1 are bridged by carbonyl and pyridylvinylidene ligands, the pyridyl N atom being bonded to the palladium atom. The use of equimolar amounts of PdCl2 increases the yield of FePd1 to 12%. The reaction pathway leading to FePd1 is proposed

Electrochemical Study of a Heterobinuclear pyridylvinylidene Complex Cp(CO)2Fe[μ-C=CH(2-C5H4N)]PdI

Электрохимическими методами изучены редокс-свойства биядерного комплекса Cp(CO)2Fe [μ-C=CH(2-C5H4N)]PdI на платиновом, стеклоуглеродном и ртутном капельном электродах в ацетонитриле. Установлено, что одноэлектронное окисление комплекса приводит к образованию катион-радикала с последующим его разрушением, а восстановление – к анион-радикалу, превращающемуся в 2-пиридилэтинильный комплекс железа Cp(CO)2Fe-C≡C-(2-C5H4N)The redox properties of binuclear complex Cp(CO)2Fe[μ-C=CH(2-C5H4N)]PdI were studied by electrochemical methods at platinum, glassed carbon and dropping mercury electrodes in acetonitrile solution. It was found that a one-electron oxidation of the complex resulted in a cation-radical, which further undergoes decomposition, whereas a reduction gave an anion-radical, which further transforms into the 2-pirydylethynyl complex of iron Cp(CO)2Fe-C≡C-(2-C5H4N

Electrochemical Study of a Heterobinuclear pyridylvinylidene Complex Cp(CO)2Fe[μ-C=CH(2-C5H4N)]PdI

Электрохимическими методами изучены редокс-свойства биядерного комплекса Cp(CO)2Fe [μ-C=CH(2-C5H4N)]PdI на платиновом, стеклоуглеродном и ртутном капельном электродах в ацетонитриле. Установлено, что одноэлектронное окисление комплекса приводит к образованию катион-радикала с последующим его разрушением, а восстановление – к анион-радикалу, превращающемуся в 2-пиридилэтинильный комплекс железа Cp(CO)2Fe-C≡C-(2-C5H4N)The redox properties of binuclear complex Cp(CO)2Fe[μ-C=CH(2-C5H4N)]PdI were studied by electrochemical methods at platinum, glassed carbon and dropping mercury electrodes in acetonitrile solution. It was found that a one-electron oxidation of the complex resulted in a cation-radical, which further undergoes decomposition, whereas a reduction gave an anion-radical, which further transforms into the 2-pirydylethynyl complex of iron Cp(CO)2Fe-C≡C-(2-C5H4N

Chemistry of Vinylidene Complexes. XVII. The First μ-vinylidene Complex with the Re-Pt Bond: Synthesis, Spectroscopic Study and Structure of (η5-C5H5)(CO)2RePt(μ-C=CHPh)(PPh3)2

При взаимодействии Cp(CO)2Re=C=CHPh (1) с Pt(PPh3)4 получен μ-винилиденовый комплекс Cp(CO)2RePt(μ-C=CHPh)(PPh3)2 (2). Исследованы спектры ИК и ЯМР 1Н, 13С и 31P соединения 2. Кристаллическая и молекулярная структура комплекса 2 установлена методом РСА [длины связей Re—Pt 2.7360(3), Re—C1 2.083(5), Pt—C1 2.008(4), C1=C2 1.351(6) Å; валентные углы Pt-C1-C2 133.5(4), Re-C1-C2 141.6(4)°]. Обсуждается влияние природы атома металла M = Re, Mn на структурные и спектральные характеристики комплексов Cp(CO)2MPt(μ-C=CHPh)(PPh3)2.The interaction between Cp(CO)2Re=C=CHPh (1) and Pt(PPh3)4 afforded the μ-vinylidene complex Cp(CO)2RePt(μ-C=CHPh)(PPh3)2 (2). The IR and 1H, 13C and 31P NMR spectra of complex 2 were studied. Crystal and molecular structure of complex 2 has been determined by an X-ray single crystal analysis. The bond distances and angles are Re—Pt 2.7360(3), Re—C1 2.083(5), Pt—C1 2.008(4), C1=C2 1.351(6) Å; Pt-C1-C2 133.5(4), Re-C1-C2 141.6(4)°. The influence of the nature of the M = Re, Mn atoms on structural and spectroscopic characteristics of complexes Cp(CO)2MPt(μ-C=CHPh)-(PPh3)2 has been considered

Chemistry of Vinylidene Complexes. XVII. The First μ-vinylidene Complex with the Re-Pt Bond: Synthesis, Spectroscopic Study and Structure of (η5-C5H5)(CO)2RePt(μ-C=CHPh)(PPh3)2

При взаимодействии Cp(CO)2Re=C=CHPh (1) с Pt(PPh3)4 получен μ-винилиденовый комплекс Cp(CO)2RePt(μ-C=CHPh)(PPh3)2 (2). Исследованы спектры ИК и ЯМР 1Н, 13С и 31P соединения 2. Кристаллическая и молекулярная структура комплекса 2 установлена методом РСА [длины связей Re—Pt 2.7360(3), Re—C1 2.083(5), Pt—C1 2.008(4), C1=C2 1.351(6) Å; валентные углы Pt-C1-C2 133.5(4), Re-C1-C2 141.6(4)°]. Обсуждается влияние природы атома металла M = Re, Mn на структурные и спектральные характеристики комплексов Cp(CO)2MPt(μ-C=CHPh)(PPh3)2.The interaction between Cp(CO)2Re=C=CHPh (1) and Pt(PPh3)4 afforded the μ-vinylidene complex Cp(CO)2RePt(μ-C=CHPh)(PPh3)2 (2). The IR and 1H, 13C and 31P NMR spectra of complex 2 were studied. Crystal and molecular structure of complex 2 has been determined by an X-ray single crystal analysis. The bond distances and angles are Re—Pt 2.7360(3), Re—C1 2.083(5), Pt—C1 2.008(4), C1=C2 1.351(6) Å; Pt-C1-C2 133.5(4), Re-C1-C2 141.6(4)°. The influence of the nature of the M = Re, Mn atoms on structural and spectroscopic characteristics of complexes Cp(CO)2MPt(μ-C=CHPh)-(PPh3)2 has been considered