The catalytic system Ni(COD)2/BF3·OEt2 has been studied in conversions of 1,5-cyclooctadiene under argon and ethylene atmosphere. It has been demonstrated that the catalytic system formed under argon exhibits a high effectiveness in cycloisomerization of 1,5-COD surpassing in this characteristi...

A new series of monochelate nickel(II) catalysts, obtained by oxidative addition of salicylaldimine ligands to bis(1,5-cyclooctadiene)nickel(0), was reported for the polymerization of ethylene (E). Almost stoichiometric amounts of MAO as co-catalyst were necessary in order to activate these syst...

Three hetero-ligand volatile iridium (I) complexes with β-diketonate derivatives [Ir(cod)(L)] (cod = 1,5-cyclooctadiene, L = CH3C(O)CHC(X)CH3, X = O (acac) 1, N–H (i-acac) 2, N–CH3 (Mei-acac) 3) have been synthesized, purified and characterized in order to investigate the influence of (O,O) a...

The reaction of [Ni(η-1-R-Ind)2] (R = H, Me) with one equivalent of 1,5-cyclooctadiene (COD), in the presence of a stoichiometric amount of HBF4 (in Et2O), at low temperature, afforded the corresponding cationic [Ni(η-1-R-Ind)(η4-COD)]BF4 in high yields. In the solid state, these complexes sh...

Treatment of tris-cyclopentadienyl-ytterbium in thf with one equivalent of 2,6-di(tert-butyl)phenol, N,N-dimethyl-2-aminoethanol or N,N-diethyl-2-aminoethanol resulted in substitution of one cyclopentadienyl ligand and formation of [YbCp2(O-C6H3tBu-2,6)(thf)] (1), [{YbCp2(μ-OCH2CH2NMe2)}2] (2) ...

Tris(cyclopentadienyl)ytterbium (YbCp3) was isolated in solid argon matrices, and the monomeric structure of YbCp3 was studied by means of infrared spectroscopy and density functional theory calculations. Compared with our previous study on the structure of tris(cyclopentadienyl)scandium (ScCp3)...

Decamethylstannocene reacts with pentakis(methoxycarbonyl)cyclopentadiene with elimination of pentamethylcyclopentadiene, yielding pentakis(methoxycarbonyl)pentamethylstannocene and decakis(methoxycarbonyl)stannocene.

New bridged di-germanocenes and di-stannocenes 2 have been synthesized from a reaction between (pentamethylcyclopentadienyl)metal chloride and the dilithium salts of the corresponding linked cyclopentadienyl ligands (spacer: phenylene, biphenylene, thiophene) in good yields. These di-metallocene...

The electronic and molecular structures of the homoleptic Yttrium tris-guanidinates complexes Y[(NiPr)2CNR1R2]3, [R1 = R2 = Me, Et and iPr] have been investigated employing DFT calculations in order to understand the structures, bonding and energies of the interactions between Yttrium metal and ...

Ni nanoparticles (diameter

The physicochemical regularities of chemical vapor deposition (CVD) of nickel films from bis-(ethylcyclopentadienyl) nickel [(EtCp)2Ni] have been experimentally studied for two reaction systems: (EtCp)2Ni–H2–Ar and (EtCp)2Ni–Ar. A model reaction scheme of (EtCp)2Ni transformations has been de...

Two new polymeric structures containing ferrocene units along the chains, namely poly(silyl ester)s, have been synthesized and characterized: a geminal poly(silyl ester) (g-PSE) and one having a disiloxane spacer between the silyl ester groups (s-PSE). The condensation polymerization of AA/BB mo...

A series of well-defined ferrocene-containing polymers (PFcEMA) were synthesized via atom transfer radical polymerization (ATRP) and employed for noncovalent dispersion of multi-walled carbon nanotubes (MWCNTs) in chloroform. The bundled MWCNTs were found to be dispersed effectively employing PF...

A series of redox- and photo-responsive copolymers, poly(2-(methacryloyloxy)ethyl ferrocenecarboxylate-co-4-methacryloylamino-4′-nitroazobenzene) (P(FcEMA-co-MAAzo)s) were synthesized using free radical polymerization. The synthesized copolymers were characterized by 1H NMR, FT-IR, gel permeati...

Detection and identification of metal ions by fluorescent turn-on sensors are challenging due to the quenching effect of most of the tested metal ions. In the present work, three ferrocene-modified pyrene-based probes 2–4 were synthesized to act as turn-on fluorescent sensors for Cu2 +. The mea...

Bioorganometallic ferrocene-dipeptide conjugates with the Ala-Pro-cysteamine chain, Fc-L-Ala-L-Pro-NHCH2CH2SH (2) and Fc-L-Ala-D-Pro-NHCH2CH2SH (4) (Fc = ferrocenoyl), were prepared by the reduction of the ferrocene-dipeptide conjugates, Fc-L-Ala-L-Pro-cystamine-L-Pro-L-Ala-Fc (1) or Fc-L-Ala-D-...

Ferrocene-l-carnosine conjugates, Fc-l-Carnosine-OEt and Fc2-l-Carnosine-OEt, were synthesized and characterized by X-ray crystallographic analyses. The single-crystal X-ray structure determination of Fc-l-Carnosine-OEt was demonstrated to reveal the formation of antiparallel β-sheet-like 12-me...

The reaction of 1,1′-bis-(chlorocarbonyl)ferrocene (1) with tetrathiadiaza-18-crown-6 (2) gives the dimeric cryptand 1,1″,1′,1″'-bis(1,4,10,13-tetrathia-7,16-diazacyclooctadecane-7,16-diyldicarbonyl)bisferrocene (4) and not the expected monomeric cryptand 3. An X-ray crystal structure s...

Four ferrocenyl complexes with the formulas {[Mn(η2-OOC(CH2)3Fc)2(bbbm)]·CH3OH}n (1), {[Co(OOC(CH2)3Fc)(η2-OOC(CH2)3Fc)(bbbm)]·CH3OH}n (2), {[Ni(OOC(CH2)3Fc)2(bbbm)(CH3OH)2]·2CH3OH}n (3) and [Pb6(μ2-OOC(CH2)3Fc)2(μ3-OOC(CH2)3Fc)2(μ2-η2-OOC(CH2)3Fc)2(η2-OOC(CH2)3Fc)2(μ4-O)2] (4) (Fc = ...

Self-assemblies of Cd(II) or Zn(II) salts with hybrid ligands sodium 4-ferrocenylbutyrate and 1,1-(1,4-butanediyl)bis-1H-benzimidazole (bbbm) gave rise to two new coordination polymers {[Cd(η2-OOC(CH2)3Fc)2(bbbm)]·CH3OH}n (1) and {[Zn(OOC(CH2)3Fc)(η2-OOC(CH2)3Fc)(bbbm)]·CH3OH}n (2) (Fc = (η...