Chloride and pseudohalide hydride-carbonyl ruthenium(II) complexes with 4-pyrrolidinopyridine as co-ligand

Małecki, Jan Grzegorz; Maroń, Anna

doi:10.1007/s11243-012-9670-8

Cited by 7 publications

(1 citation statement)

References 30 publications

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“…The coordination environments around the ruthenium(II) centers in the complexes have distorted octahedral geometry, defined by two axial phosphorus donors from triphenylphoshine, plus hydride, carbonyl, halide and NO 2 PhCH 2 py ligands in the equatorial plane. The bond distances and angles in the complexes are in good agreement with the reported data for similar complexes [30][31][32][33]. The angles between the two PPh 3 ligands range from 175.6°in (1, average value) to 172.25(5)°in complex (2).…”

Section: Resultssupporting

confidence: 87%

Spectroscopic characterization of chloride and pseudohalide ruthenium(II) complexes with 4-(4-nitrobenzyl)pyridine

Maroń

Małecki

2014

Transition Met Chem

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Chloride, isocyanate and isothiocyanate hydride carbonyl ruthenium(II) complexes of 4-(4-nitrobenzyl)pyridine were synthesized from the precursor complex [RuHCl(CO)(PPh 3 ) 3 ] and characterized by IR, NMR, UV-Vis spectroscopy and X-ray crystallography. The electronic structures of the complexes were investigated by means of DFT calculations, based on their crystal structures. The spinallowed singlet-singlet electronic transitions of the complexes were calculated by time-dependent DFT, and the UVVis spectra are discussed on this basis. The emission properties of the complexes were studied at ambient temperature, and the quantum yields of fluorescence, the lifetimes and nature of the excited states are discussed. The chloride and isothiocyanate complexes are practically nonemissive, with quantum yields under 0.01 %. Interpretation of spectra, supported by TD-DFT calculations, indicates that in this energy region, the transitions have MLCT character with admixture of LLCT (chloride and isothiocyanate complexes). The dominant LLCT character was visible in the case of the most emissive (isocyanate) complex. The low values of the lifetimes and quantum yields for these complexes indicate the influence of the metal center in the emission process.

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Section: Resultssupporting

confidence: 87%

Spectroscopic characterization of chloride and pseudohalide ruthenium(II) complexes with 4-(4-nitrobenzyl)pyridine

Maroń

Małecki

2014

Transition Met Chem

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Reactions of Azides Coordinated to Ruthenium(II) Centers with Haloalkanes To Afford Nitrogen‐Containing Moieties

2017

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The reactions of azide ions coordinated to ruthenium(II) centers bearing two 2,2′-bipyridine (bpy) ligands, that is, Br) afforded imine (NH=CR 1 R 2 ) and ammine (NH 3 ) ligands with dinitrogen evolution. The formation of these nitrogen-containing moieties depended on both the reaction solvent and the alkyl group of the haloalkane. Four types of imine complexes, [a] Measurements: Elemental analyses were performed with a Perkin-Elmer 2400-II instrument. The FAB MS spectra were measured with a JEOL JMS-700 spectrometer with m-nitrobenzyl alcohol as the matrix. The 1 H and 13 C NMR spectra were obtained with JEOL JML-AL500 and AL300 spectrometers. The UV/Vis spectra were obtained with a Shimadzu MultiSpec-1500 diode array spectrophotometer. The IR spectra were recorded with a Perkin-Elmer FT-2000 FTIR spectrophotometer with samples prepared as KBr disks. The GC was performed with a Shimadzu GC-8A instrument with an MS13X column. The GC-MS was performed with a JEOL Automass SYSTEM II instrument. The electrochemical measurements were performed with CH 3 CN solutions containing 0.1 mol dm -3 tetraethylammonium perchlorate (TEAP, Nakarai Tesque Ltd.) and CH 3 NO 2 solutions containing 0.1 mol dm -3 tetra-n-butylammonium perchlorate (TBAP, Nakarai Tesque Ltd.) as the supporting electrolyte with a platinum disk working electrode (φ = 1.6 mm) and an Ag/0.01 mol dm -3 AgNO 3 reference electrode with a BAS 100B/W electrochemical analyzer. At the end of each measurement, ferrocene was added as an internal standard to correct the redox potentials.DFT Calculations: All calculations were performed with the Gaussian 09 program. [28] The geometry optimizations were performed at the B3LYP level of density functional theory with the Los Alamos effective core potential plus DZ (LANL2DZ) and cc-pVDZ basis sets. Materials: RuCl 3 ·nH 2 O (Ru content 40.11 wt.-%) was purchased from Furuya Kinzoku Inc. [Ru II Cl 2 (bpy) 2 ]·2H 2 O, [Ru(N 3 ) 2 (bpy) 2 ]·H 2 O (1·H 2 O), [Ru II (NH 3 ) 2 (bpy) 2 ][PF 6 ] 2 , and [Ru II (NH=CH 2 )(NCCH 3 )(bpy) 2 ]-[PF 6 ] 2 were prepared by the reported procedures. [16,25,29] Caution! Sodium azide is potentially explosive and should be handled with care.

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Phosphorescence of a ruthenium(II) hydride-carbonyl complex with 3-hydroxy-2-quinoxalinecarboxylic acid as a co-ligand

Małecki

Maroń

Kusz

2015

Mendeleev Communications

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Chloride and pseudohalide hydride-carbonyl ruthenium(II) complexes with 4-pyrrolidinopyridine as co-ligand

Cited by 7 publications

References 30 publications

Spectroscopic characterization of chloride and pseudohalide ruthenium(II) complexes with 4-(4-nitrobenzyl)pyridine

Spectroscopic characterization of chloride and pseudohalide ruthenium(II) complexes with 4-(4-nitrobenzyl)pyridine

Reactions of Azides Coordinated to Ruthenium(II) Centers with Haloalkanes To Afford Nitrogen‐Containing Moieties

Phosphorescence of a ruthenium(II) hydride-carbonyl complex with 3-hydroxy-2-quinoxalinecarboxylic acid as a co-ligand

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