Pentacarbonyl(2-ferrocenylpyridine)metal(0) complexes of Group 6 elements. Synthesis and characterization

Yaman, G
Kayran, C
Özkar, Saim
2-Ferrocenylpyridine (2-Fcpy) was prepared according to the literature procedure. 1,1'-Dipyridylferrocene was also obtained as a minor product and characterized by H-1- and C-13-n.m.r. spectroscopy. Prolonged irradiation of Cr(CO)(6) in the presence of 2-Fcpy in n-hexane gave Cr(CO)(5)(2-Fcpy) which could not be isolated due to its instability even at low temperature, but was detected in solution by i.r. spectroscopy. The preparation of Mo(CO)(5)(2-Fcpy) from direct photolysis of Mo(CO)(6) with 2-Fcpy could not be achieved. However, the reaction of Mo(CO)(5)( THF) with 2-Fcpy gave Mo(CO)(5)(2-Fcpy) which was isolated and characterized by i.r., H-1- and C-13-n. m.r. spectroscopic techniques. W(CO)(5)(2-Fcpy) was prepared by irradiation of W(CO)(6) in the presence of 2-Fcpy in n-hexane. The complex was isolated and characterized by i. r., H-1-, C-13-n. m. r. spectroscopic techniques. W(CO)(5)(2-Fcpy) thus appears to be more stable than the Mo and Cr analogues. The main reason for the general instability of the M(CO)(5)(2-Fcpy) complexes is assigned to the weak pi-accepting ability of 2-ferrocenylpyridine.


Rhodium(0) nanoparticles supported on hydroxyapatite: preparation, characterization and catalytic use in hydrogen generation from hydrolysis of hydrazine borane and ammonia borane
Çelik, Derya; Özkar, Saim; Department of Chemistry (2012)
This dissertation presents the preparation and characterization of rhodium(0) nanoparticles supported on hydroxyapatite, and investigation of their catalytic activity in hydrogen generation from the hydrolysis of hydrazine-borane and ammonia-borane. Rh+3 ions were impregnated on hydroxyapatite by ion-exchange; then rhodium(0) nanoparticles supported on hydroxyapatite were formed in-situ during the hydrolysis of hydrazine-borane at room temperature. The rhodium(0) nanoparticles supported on hydroxyapatite we...
Photocatalytic hydrosilylation of conjugated dienes with triethylsilane in the presence of Cr(CO)(5)L(L=CO, P(CH3)(3), P(OCH3)(3))
Özkar, Saim; Kayran, C (Elsevier BV, 1997-04-15)
The effect of donor ligands on the chromium carbonyl photocatalysed hydrosilylation of 1,3-butadiene, 2-methyl-1,3-butadiene, 2,3-dimethyl-1,3-butadiene, trans-1,3-pentadiene with triethylsilane was studied. Photocatalytic hydrosilylation of dienes conducted in the presence of Cr(CO)(5)L (L = P(CH3)(3) or P(OCH3)(3)) yields the cis-1,4-adducts, 1-triethylsilyl-2-butene derivatives, as the main products; these have been isolated by distillation or preparative GC and fully characterised by NMR spectroscopy. A...
Zeolite confined nanostructured dinuclear ruthenium clusters: preparation, characterization and catalytic properties in the aerobic oxidation of alcohols under mild conditions
Zahmakiran, Mehmet; Özkar, Saim (Royal Society of Chemistry (RSC), 2009-01-01)
Zeolite confined nanostructured dinuclear ruthenium clusters as a novel material were prepared by a simple three step procedure: (i) the ion-exchange of Ru3+ ions with the extra-framework Na+ ions in zeolite-Y, (ii) reduction of the Ru3+ ions within the cavities of zeolite with borohydride ions in aqueous solution all at room temperature, (iii) drying the isolated samples under aerobic conditions at 100 +/- 1.0 degrees C. The composition, morphology and structure of zeolite confined nanostructured dinuclear...
Synthesis of ferrocenyl quinolines
Zora, Metin (Elsevier BV, 2008-06-01)
A convenient one-pot synthesis of ferrocenyl-substituted quinolines via a molecular iodine-catalyzed reaction of ferrocenylimines with enolizable aldehydes is reported. First, nucleophilic addition of the in situ generated enol to ferrocenylimine produces beta-anilinopropionaldehyde, which then undergoes intramolecular Friedel-Crafts reaction to give dihydroquinoline derivative. Finally, subsequent dehydration and aerobic oxidation affords ferrocenyl quinolines.
Enhanced reactivity in a heterogeneous oxido-peroxido molybdenum(VI) complex of salicylidene 2-picoloyl hydrazone in catalytic epoxidation of olefins
Moradi-Shoeili, Zeinab; Zare, Maryam; AKBAYRAK, SERDAR; Özkar, Saim (Springer Science and Business Media LLC, 2017-05-01)
A molybdenum(VI) oxido-diperoxido complex of salicylidene 2-picoloyl hydrazine (sal-phz) was synthesized and successfully grafted onto chloro-functionalised Fe3O4 nanoparticles. The resulting heterogeneous and magnetically recoverable nanoscale catalyst MoO3(sal-phz)/Fe3O4 was characterized by physicochemical and spectroscopic techniques. The activity of this heterogeneous catalyst for the oxidation of olefins to corresponding epoxides was efficiently increased by increasing the reaction temperature up to 9...
Citation Formats
G. Yaman, C. Kayran, and S. Özkar, “Pentacarbonyl(2-ferrocenylpyridine)metal(0) complexes of Group 6 elements. Synthesis and characterization,” TRANSITION METAL CHEMISTRY, pp. 53–57, 2005, Accessed: 00, 2020. [Online]. Available: