1271-15-4Relevant articles and documents
Rausch, M. D.,Fischer, E. O.,Grubert, H.
, p. 76 - 82 (1960)
Benkeser, R. A.,Goggin, D.,Schroll, G.
, p. 4025 - 4026 (1954)
Cyclopalladated complex of 1-ferrocenylisoquinoline
Bulygina,Khrushcheva,Peregudov,Sokolov
, p. 146 - 150 (2015)
A new dimeric cyclopalladated ferrocenyl complex di-μ -chloro-bis[2-(1-isoquinolinyl)ferrocenyl](C,N)dipalladium was obtained and characterized. Its catalytic properties in the Heck and Suzuki reactions (including a solid-phase version), as well as in hydroarylation of norbornene, were studied.
TRIFERROCENYL-COMPLEXE VON WOLFRAM(VI): MOLEKUELSTRUKTUR IM FESTKOERPER UND DYNAMISCHES VERHALTEN IN LOESUNG VON TRIFERROCENYL-FERROCENOXY-OXO-WOLFRAM, WO(OFc)Fc3
Herberhold, Max,Kniesel, Heidemarie,Haumaier, Ludwig,Thewalt, Ulf
, p. 355 - 368 (1986)
Triferrocenyltungsten complexes of the type WO(X)Fc3 (X=Cl, (1), OMe (2), OFc (3) and OnBu (4)) were obtained by treating WOCl4 with ferrocenyllithium, FcLi, in tetrahydrofuran solution.Reaction of WOCl4 with a threefold excess of FcLi gives 1, which may be converted into 2 using KOCH3.Reaction of WOCl4 with a sixfold excess of FcLi gives a mixture containing 3 und 4 in addition to ferrocene and biferrocene.According to the X-ray crystallographic analysis, WO(OFc)Fc3 (3) has a trigonal-bipyramidal structure with three ferrocenyl ligands occupying the equatorial positions and an axial ferrocenoxy group coordinated trans to the oxo ligand The three W-C(ferrocenyl) (average 2.092 angstroem) and the O-C(ferrocenyl) (1.33(1) angstroem) bond distances are remarkably short.The axial tungsten-oxygen distances correspond to a W=O double and a W-O single bond (1.705(5) and 1.945(5) angstroem), respectively.The 1H and 13C NMR spectra of WO(OFc)Fc3 (3) are temperature-dependent.This is ascribed to a hindered rotation of the ferrocenyl ligands around the W-C(ferrocenyl) bonds; the free activation enthalpy ΔG(excit.)(Tc) of this intramolecular dynamic process is 62.5 +/- 0.5 kJ mol-1.
Ferrocene-containing sterically hindered phosphonium salts
Ermolaev, Vadim,Gerasimova, Tatiana,Kadyrgulova, Liliya,Shekurov, Ruslan,Dolengovski, Egor,Kononov, Aleksandr,Miluykov, Vasily,Sinyashin, Oleg,Katsyuba, Sergei,Budnikova, Yulia,Khrizanforov, Mikhail
, (2018)
The synthesis and physical properties of the series of the ferrocenyl-containing sterically hindered phosphonium salts based on di(tert-butyl)ferrocenylphosphine is reported. Analysis of voltamogramms of the obtained compounds revealed some correlations b
Goldberg, S. I.,Keith, L. H.,Prokopov, T. S.
, p. 850 - 851 (1963)
Formation of unexpected silicon- and disiloxane-bridged multiferrocenyl derivatives bearing Si-O-CHCH2 and Si-(CH2)2C(CH3)3 substituents via cleavage of tetrahydrofuran and trapping of its ring fragments
Bru?a, Sonia,González-Vadillo, Ana M.,Ferrández, Marta,Perles, Josefina,Montero-Campillo, M. Merced,Mó, Otilia,Cuadrado, Isabel
, p. 11584 - 11597 (2017)
The formation of a family of silicon- and siloxane-bridged multiferrocenyl derivatives carrying different functional groups attached to silicon, including Fc2(CH3)3C(CH2)2SiCHCH2 (5), Fc2(CH2CH-O)SiCHCH2 (6), Fc2(OH)SiCHCH2 (7), Fc2(CH2CH-O)Si-O-Si(O-CHCH2)Fc2 (8) and Fc2(CH2CH-O)Si-O-SiFc3 (9) is described. Silyl vinyl ether molecules 6, 8 and 9 and the heteroleptic vinylsilane 5 resulted from the competing metathesis reaction of lithioferrocene (FcLi), CH2CH-OLi or (CH3)3C(CH2)2Li with the corresponding multifunctional chlorosilane, Cl3SiCHCH2 or Cl3Si-O-SiCl3. The last two organolithium species have been likely formed in situ by fragmentation of the tetrahydrofuran solvent. Diferrocenylvinyloxyvinylsilane 6 is noteworthy since it represents a rare example of a redox-active silyl mononomer in which two different CC polymerisable groups are directly connected to silicon. The molecular structures of the silicon-containing multiferrocenyl species 5, 6, 8 and 9 have been investigated by single-crystal X-ray diffraction studies, demonstrating the capture and storage processes of two ring fragments resulting from the cleavage of cyclic THF in redox-active and stable crystalline organometallic compounds. From electrochemical studies we found that by changing the anion of the supporting electrolyte from [PF6]- to [B(C6F5)4]-, the redox behaviour of tetrametallic disiloxane 8 can be switched from a poorly resolved multistep redox process to four consecutive well-separated one-electron oxidations, corresponding to the sequential oxidation of the four ferrocenyl moieties.
Rausch, M. D.
, p. 3337 - 3341 (1963)
The Crystal Structure of the THF Adduct of Monolithioferrocene
F?rster, Christoph,Heinze, Katja
, p. 517 - 520 (2015)
Single crystals of [Fe(η5-C5H4)(η5-C5H5)]2Li2(thf)4 (1) were obtained from a tetrahydrofuran solution containing monolithioferrocene. The title compound crystallizes in the monoclinic space group P21 with a = 9.6589(5) ?, b = 17.4285(9) ?, c = 30.3116(15) ?, β = 91.911(2)° and V = 5099.8(5) ?3 with three independent molecules of 1. All individual molecules feature a non- symmetric almost planar Li2C2 four-membered ring with two shorter (2.118-2.215 ?) and two longer Li-C distances (2.257-2.309 ?). The lithium cations are each coordinated by two carbanionic atoms of two ferrocenyl substituents and two tetrahydrofuran molecules in a distorted tetrahedral fashion. All ferrocenyl moieties display an eclipsed conformation of the C5 rings.
