Infrared (250–4000 cm−1) and laser Raman spectra (75–3300 cm−1) were obtained on C5H5V(CO)4 and CH3COC5H4V(CO)4. A vibrational assignment is proposed which is based upon the concept of “local symmetry”. The cyclopentadienyl ring breathing frequency was found to be associated with the strong ...

The complexes h5-Cp′V(CO)3(hydrazine′) (Cp′ = C5H5, C5Me5, 1,2- and 1,3-C5H3(Me)cetyl, C5H4SiMe3, and indenyl; hydrazine′ = N2H4, N2H3Me, H2NMe2, H(Me)NN(Me)H, and N2H3Ph), containing the hydrazine ligand in the mono-hapto mode, have been prepared via the precursors Cp′V(CO)3(thf) and chara...

The crystal structure of(π-C5H5)V(CO)4 has been found from a 3-dimensional X-ray analysis. The orange crystals are orthorhombic, space group Pnma, with the vanadium atom occupying a special position on a mirror plane. The cyclopentadienyl ring was disordered ovr two equally preferred orientatio...

A new series of bidentate PN type imino- (1–3) and amino-phosphine ligands (4–6) and their palladium(II) complexes [Pd(PN)Cl2] (1a–6a) have been synthesized and fully characterized using spectroscopic and analytical methods, including 31P, 1H, 13C NMR and FTIR spectroscopy and high resolution...

The complex PdII(1,5-COD)Cl2 (1,5-COD=1,5-cyclooctadiene) shows a long-wavelength ligand-to-metal charge transfer (LMCT) absorption at λmax=342 nm. It is suggested that LMCT excitation generates a COD radical cation and PdICl2− in the primary photochemical step. In acetonitrile, a back-electron...

Several new cyclopentadienylnickel complexes were synthesized and characterized. All the complexes exhibited catalytic activity in Suzuki–Miyaura cross-coupling reaction with conversion rates from 10 to 80% and very high selectivity. The catalytic activity of the complexes strongly depended on ...

The synthesis of complexes of the type π-C5H5Mo(CO)2LX and π-C5H5Mo(CO)L2X, where XCl, Br, or I and LP(OCH2)3CR (RCH3, C2H5, or C3H7), is reported. Infrared and conductance data verified that all compounds existed as covalent species in solution. Each of the three π-C5H5Mo(CO)2LCl compl...

The catalytic isomerization of 2-metyl-3-butenenitrile to 3-pentenenitrile was carried out by (dppf)Ni species (dppf = bis-diphenylphosphinoferrocene) in the absence and the presence of Lewis acids. Studies in solution reveal the intermediacy of Ni(II) allyl complexes. Addition of Lewis acids su...

The preparation of properties of two acetato-bridged binuclear acetoxy- and methoxypalladium(II) olefin adducts are described. The addition of the olefin double bond is found to be trans by an NMR spectral analysis. The oxypalladium adduct is found to exchange the oxy group rapidly indicating a ...

The reaction of aldehydes with chiral α-methylbenzylammonium hypophosphite, which, in majority of cases led exclusively to one diastereoisomer, turned out to be much less stereoselective in case of ferrocenecarboxaldehyde. Attempts have been undertaken to explain it.

With its proximal orientation of Hg(II) atoms, intrinsic accessibility to electrophilic sites on the molecular surface and perfluorinated periphery responsible for its electron-withdrawing nature, trimeric perfluoro-ortho-phenylenemercury, (o-C6F4Hg)3, has demonstrated a capacity to form a wide ...

DFT methods have been used to study the reaction mechanism of 1-phenylethanol with benzyl alcohol catalyzed by ferrocenecarboxaldehyde/NaOH. The structures of intermediates and transition states, and the exchange of electronic density are computed in detail. In general, the catalyzed reaction is...

9-Fluorenone azine 2a and benzophenone azine 2b were synthesized, respectively, by treatment of 9-fluorenone hydrazone 1a or benzophenone hydrazone 1b with FeCl3 in chloroform. Ferrocenecarboxaldehyde 3 reacts with 1a or 1b, in ethanol, to furnish novel asymmetrical azine products 1-((ferrocenyl...

The ferrocene-based Schiff base 3 was synthetized by reaction of ferrocenecarboxaldehyde 1 with 4-aminoantipyrine 2. However, the reaction of 1 with hydroxylamine affords ferrocenecarboxaldehyde oxime 4. Compounds 3 and 4 were fully characterized by IR, 1H, 13C and DEPT-135 NMR spectroscopy, ele...

Phase-selective ac polarography has been used to measure the electron transfer parameters of (η4-cyclooctatetraene)iron tricarbonyl in N,N-dimethylformamide with tetra-n-butylammonium hexafluorophosphate as supporting electrolyte. Uncorrected ks values of 0.24 and 0.15 cm s−1 were measured for ...

Preferential oriented multi-walled carbon nanotubes were prepared by injection chemical vapor deposition (CVD) using either cyclopentadienyliron dicarbonyl dimer or cyclooctatetraene iron tricarbonyl as the iron catalyst source. The catalyst precursors were dissolved in toluene as the carrier so...

New rhodium(I) N-heterocyclic carbene complexes were synthesized in good yields by the reactions of rhodium dimer [Rh(OMe)COD]2 with two equivalent of 1,3-dialkylimidazolinium chloride salts in tetrahydrofuran. All of the complexes were characterized using elemental analysis, 1H NMR and 13C NMR ...

Hydrogen transfer reduction methods are attracting increasing interest from synthetic chemists in view of their operational simplicity. Thus, interaction of [Rh(μ-Cl)(cod)]2 and Ir(η5-C5Me5)(μ-Cl)Cl]2 with phosphinite ligand [(Ph2PO)-C7H11N2Cl]Cl, 1 gave new monodendate (1-chloro-3-(3-methyli...

Poly(dimethylsiloxane) (PDMS) resins are widely used for aerospace applications due to their unique properties, such as a high flexibility, good thermal stability and optical transparency in the visible-near-infrared spectral region. Generally, PDMS networks are obtained by hydrosilylation with ...

The Schiff’s base complexes (CO)2(NO)Cr{η5-C5H4C(R) = NNH[2,4-(NO2)2C6H3]} (4 R = H, 5 R = CH3, 6 R = C6H5)) and (CO)3(CH3)M{η5-C5H4C(R) = NNH[2,4-(NO2)2C6H3]} (13, M = Mo, R = H; 14, M = Mo, R = CH3; 17 M = W, R = H; 18 M = W, R = CH3) were obtained from condensation reactions. The structure...