Synthesis, characterization, and electrochemistry of tetracarbonyl(6-ferrocenyl-2,2 '-bipyridine)tungsten(0)

Edinc, Pelin
Oenal, Ahmet M.
Özkar, Saim
6-Ferrocenyl-2,2'-bipyridine (fcbpy) was prepared by the reaction of lithiated ferrocene with bipyridine and employed as a bidentate ligand for the formation of tetracarbonyl(6-ferrocenyl-2,2'-bipyridine)tungsten(0). The labile complex pentacarbonyl[eta(2)-bis(trimethylsilyl)ethyne]tungsten(0) reacts with fcbpy in CH2Cl2 to yield the disubstitution product, W(CO)(4)(fcbpy), which was isolated as analytically pure substance and characterized by elemental analysis, IR, UV-Vis, MS, H-1 and C-13 NMR spectroscopies. Electrochemistry of the fcbpy molecule and its Complex W(CO)(4)(fcbpy) was studied by cyclic voltammetry and controlled potential electrolysis combined with UV-Vis spectrometer. In the cyclic voltammogram of both the fcbyp molecule and its complex, an irreversible reduction and a reversible oxidation are assigned to the bipyridine and ferrocene moieties, respectively. The W(CO)(4)(fcbpy) complex exhibits additionally two irreversible oxidations due to the tungsten centered electron transfer reactions.


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Zora, Metin (American Chemical Society (ACS), 1994-08-01)
Selective recognition of anionic cell membranes using targeted liposomes coated with zinc(II)-bis(dipicolylamine) affinity units
Türkyılmaz, Serhan; Palumbo, Rachael; Smith, Bradley D. (Royal Society of Chemistry (RSC), 2014-08-14)
Zinc(II)-bis(dipicolylamine) (Zn(2)BDPA) coated liposomes are shown to have high recognition selectivity towards vesicle and cell membranes with anionic surfaces. Robust synthetic methods were developed to produce Zn(2)BDPA-PEG-lipid conjugates with varying PEG linker chain length. One conjugate (Zn(2)BDPA-PEG(2000)-DSPE) was used in liposome formulations doped with the Lipophilic near-infrared fluorophore DiR. Fluorescence cell microscopy studies demonstrated that the multivalent Liposomes selectively and ...
Dipole moments of some styrene copolymers
Küçükyavuz, Zühal; Baysal, Bahattin (American Chemical Society (ACS), 1988-7)
OZER, Z; Özkar, Saim (Informa UK Limited, 1992-01-01)
Pentacarbonylphospholemetal(0) and cis-tetracarbonylbis(phosphole)metal(0) complexes were synthesized from the thermal reaction of M(CO)5(THF) and M(CO)4(COD) (M: Cr, Mo, W) with corresponding phosphole (1-phenyl-3,4-dimethylphosphole, 1-phenyl-3-methylphosphole, and 1-phenylphosphole). These complexes were isolated as orange crystals by column chromatography on silicagel at 253 K and crystallization from n-hexane at 223 K and characterized by means of IR and NMR (H-1, C-13, and P-31). Spectroscopic data sh...
Ruthenium(III) acetylacetonate: A homogeneous catalyst in the hydrolysis of sodium borohydride
Keceli, Ezgi; Özkar, Saim (Elsevier BV, 2008-05-01)
Ruthenium(ill) acetylacetonate was employed for the first time as homogeneous catalyst in the hydrolysis of sodium borohydride. Ruthenium(III) acetylacetonate was not reduced by sodium borohydride under the experimental conditions and remains unchanged after the catalysis. Poisoning experiments with mercury and trimethylphosphite provide compelling evidence for the fact that ruthenium(III) acetylacetonate is indeed a homogenous catalyst in the hydrolysis of sodium borohydride. Kinetics of the ruthenium(III)...
Citation Formats
P. Edinc, A. M. Oenal, and S. Özkar, “Synthesis, characterization, and electrochemistry of tetracarbonyl(6-ferrocenyl-2,2 ’-bipyridine)tungsten(0),” JOURNAL OF ORGANOMETALLIC CHEMISTRY, pp. 1983–1989, 2007, Accessed: 00, 2020. [Online]. Available: