Triosmium compounds containing the oxametallacycle [Os(CO)3{C(R)CHC(O)CHC(H)C5H4FeC5H5}] moiety. Synthesis and electrochemical studies

Alonso, Beatriz; Álvarez-Toledano, Cecilio; Delgado, Esther; Hernández, Elisa; García-Orozco, Iván; Toscano, Rubén A.

doi:10.1016/j.jorganchem.2007.06.046

Cited by 2 publications

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“…The results of the electrochemical study of binuclear μ-vinylidene complexes Cp(CO) 2 MnM(-C=CHPh)LL (M = Pt, Pd, L, L = CO, P(OPr-i) 3, PPh 3, P(OPh) 3 , L-L = Ph 2 P(CH 2 ) n PPh 2 , n = 1 (dppm), 2 (dppe), 3 (dppp)) [52][53][54][55][56][57], Cp(CO) 2 RePt(μ-C 1 =C 2 HPh)L 2 (L 2 = 2 PPh 3 , dppm, dppe, dppp) [58], dimeric compounds [Cp(CO) 2 M(µ-C=CHPh)CuCl] 2 (M = Mn, Re) [59][60][61] and trinuclear clusters CpMnFePt( 3 -C=CHPh)(CO) 5 LL ' (L, L ' = CO, PPh 3 , P(OPr-i) 3 , L-L = dppm) [53][54][55][56] were reported in our previous papers. The redox properties of vinylidene clusters ( 3 -C=CHPh)FeCo 2 (CO) 7 dppm, ( 3 -C=CHPh)FeCo 2 (CO) 9 [62,63].…”

Section: Introductionmentioning

confidence: 99%

Electrochemically induced transformations of bi- and trinuclear heterometallic vinylidene complexes containing Re, Pd and Fe

Burmakina

Verpekin

Maksimov

et al. 2017

Inorganica Chimica Acta

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Redox-induced transformations of bi-(Cp(CO) 2 RePd(μ-C=CHPh)(PPh 3) 2 (2), Cp(CO) 2 RePd(μ-C=CHPh)(P-P) [P-P =  2-Ph 2 P(CH 2) 2 PPh 2 (dppe) (3),  2-Ph 2 P(CH 2) 3 PPh 2 (dppp) (4)], Cp(CO) 2 ReFe(μ-C=CHPh)(CO) 4 (5) and trinuclear (Cp(CO) 2 ReFe 2 (μ 3-C=CHPh)(CO) 6 (6), CpReFePd(µ 3-C=CHPh)(CO) 5 (P-P) [P-P = dppe (7), dppp (8)] heterometallic vinylidene complexes derived from Cp(CO) 2 Re=C=CHPh (1) were investigated by electrochemical methods. The oxidation processes of clusters 7 and 8 were studied by EPR spectroscopy. The electrochemical properties of clusters 7 and 8 were shown to depend on the nature of the chelate diphosphine ligand at the palladium center in contrast to complexes 3 and 4. The oxidation of complexes 2-4 was found to result in the Re-Pd, Pd-С 1 bond cleavage and formation of rhenium complex 1 and Pd-containing fragments. The oxidation of 7 and 8 resulted in the formation of the radical cations 7 +• and 8 +• , which gradually transformed into a number of intermediate products: Cp(CO) 2 RePd(μ-C=CHPh)(P-P), [Fe(CO) 3 ] +• , [CpReFe 2 (µ 3-C=CHPh)(CO) 6 ] +• and others. The final products of their oxidation in both cases were triangular clusters (CO) 8 Fe 2 Pd(P-P) [P-P = dppe (9), dppp (10)] and rhenium complex 1. The molecular structure of cluster 7 was established by X-ray diffraction analysis.

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Section: Introductionmentioning

confidence: 99%

Electrochemically induced transformations of bi- and trinuclear heterometallic vinylidene complexes containing Re, Pd and Fe

Burmakina

Verpekin

Maksimov

et al. 2017

Inorganica Chimica Acta

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“…Поэтому изучение электрохимического поведения кластерных соединений переходных металлов является важным и практически необходимым условием для прогнозирования их свойств и дальнейшего применения таких соединений [13,14,[22][23][24]. Исследованию редокс-свойств гетерометаллических кластерных соединений осмия электрохимическими метода-ми посвящён ряд публикаций, в том числе кластеров с металлоостовами Os 3 Fe [25], Os 3 Co 2 [26], MnOs 3 [27], Os 4 Au n (n = 1-4) [28,29], Os 5 Pd [30], Os 9 Rh 3 [31], Os 18 Pd 3 [32], Os 18 Hg 3 [33]. Ана-лиз опубликованных данных показывает, что в кластерах с одним гетероатомом, таких как CpMnOs 3 (μ-CH=CHPh)(μ-H)(μ-CO)(CO) 11 , при редокс-превращениях происходит отрыв фраг-мента с гетерометаллом и образование гомометаллического трехъядерного кластера осмия [27].…”

Section: Introductionunclassified