The infrared spectra of imidazole complexes of first transition series metal(ii) nitrates and perchlorates

Hodgson, John B.; Percy, Gordon C.; Thornton, David A.

doi:10.1016/0022-2860(80)80161-x

Cited by 68 publications

(24 citation statements)

References 22 publications

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“…Imidazole has been the subject of several IR studies (16,17) and In general, many of the bands found it-, the melt are in a similar position to those found in iridazole, but shifted to lower frequencies aue to the inductive effect of the alkyl groups. Bands have been assigned on the basis of peak position, intensity and sensitivity to ring substitution relative to imioazole and its derivatives (19).…”

Section: I< Spectra Of Aci 3 /Bupyci Meltsmentioning

confidence: 92%

Infrared study of ambient-temperature chloroaluminates as a function of melt acidity

Tait¹,

Osteryoung²

1984

Inorg. Chem.

174

114

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Section: I< Spectra Of Aci 3 /Bupyci Meltsmentioning

confidence: 92%

Infrared study of ambient-temperature chloroaluminates as a function of melt acidity

Tait¹,

Osteryoung²

1984

Inorg. Chem.

174

114

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“…The strong v,,(O=Re=O) band, observed at -820 cm-' for the pyridine and ethylenediarnine analogues (30), is clearly shifted below 800 cm-' in the imidazole complexes, but assignment is not straightforward, since the ligands also show strong y(C-H) bands in this region. Furthermore, the y(N-H) mode of free ImH at -950 cm-' is known to move to the 700-850 cm-' range in various complexes (29,31,32), mainly because of changes in hydrogen bonding. From comparisons within the present set of [ReO,L,]+ compounds and with complexes of other metals, the v(O=Re=O) mode was assigned to the strong component in the 780-795 cm-' range.…”

Section: Discussionmentioning

confidence: 99%

Non-stoichiometric chloride salts of dioxotetrakis(imidazole)rhenium(V) cations

Lebuis¹,

Young²,

Beauchamp³

1993

Can. J. Chem.

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. Orange [Re02L4]C1 salts were prepared with L = imidazole and 2-methylimidazole. The presence of a strong Re=O stretching band in the infrared spectra near 785 cm-I is consistent with a trans-dioxo octahedral structure. With 1,2-dimethylimidazole, red-violet solids were obtained, which were studied by X-ray diffraction. Form I (from methanol): cubic, l a j d , a = 25.205 A, R = 0.032, 986 observed reflections; form I1 (from ethanol-dichloromethane): cubic, Ia3d, a = 25.520 A, R = 0.056, 766 observed reflections. Both materials are non-stoichiometric, containing trans-[R~O,L,]+ and protonated t r a n s -[~e~(~~) L~]~+ in an approximate ratio of 3: 1 for I and 2: 1 for 11. In both cases, the unit cell contains 1 "normal" C1-ion and 2/3 H 2 0 per complex. In form I, the additional charge of [ReO(OH)L412+ is balanced by an extra C1-ion partly occupying the unit cell origin, where it is replaced by disordered methanol the rest of the time. In form 11, Re04-and CH2Cl2 play the corresponding roles. In the infrared spectra, besides the characteristic band for the dioxo species, both forms show an extra peak at -932 cm-' originating from the protonated species, whereas form I1 shows an additional band at 907 cm-' for uncoordinated Re04-. The 'H and "C NMR spectra of both forms in D 2 0 are identical to those of the pure [R~O~L,]' salt, indicating that the protonated species is strongly acidic. ANNE-MARIE LEBUIS

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“…Assignment of the peaks was based on the available literature. [102,103] Melting points were deter- www.chemeurj.org mined on aM ettler-Toledo 822 DSC instrument at ah eating rate of 10 8Cmin…”

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confidence: 99%

Liquid Nickel Salts: Synthesis, Crystal Structure Determination, and Electrochemical Synthesis of Nickel Nanoparticles

Sniekers

Verguts

Brooks

et al. 2015

Chemistry A European J

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New nickel-containing ionic liquids were synthesized, characterized and their electrochemistry was investigated. In addition, a mechanism for the electrochemical synthesis of nanoparticles from these compounds is proposed. In these so-called liquid metal salts, the nickel(II) cation is octahedrally coordinated by six N-alkylimidazole ligands. The different counter anions that were used are bis(trifluoromethanesulfonyl)imide (Tf2 N(-) ), trifluoromethanesulfonate (OTf(-) ) and methanesulfonate (OMs(-) ). Several different N-alkylimidazoles were considered, with the alkyl sidechain ranging in length from methyl to dodecyl. The newly synthesized liquid metal salts were characterized by CHN analysis, FTIR, DSC, TGA and viscosity measurements. An odd-even effect was observed for the melting temperatures and viscosities of the ionic liquids, with the complexes with an even number of carbon atoms in the alkyl chain of the imidazole having a higher melting temperature and a lower viscosity than the complexes with an odd number of carbons. The crystal structures of several of the nickel(II) complexes that are not liquid at room temperature were determined. The electrochemistry of the compounds with the lowest viscosities was investigated. The nickel(II) cation could be reduced but surprisingly no nickel deposits were obtained on the electrode. Instead, nickel nanoparticles were formed at 100 % selectivity, as confirmed by TEM. The magnetic properties of these nanoparticles were investigated by SQUID measurements.

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The infrared spectra of imidazole complexes of first transition series metal(ii) nitrates and perchlorates

Cited by 68 publications

References 22 publications

Infrared study of ambient-temperature chloroaluminates as a function of melt acidity

Infrared study of ambient-temperature chloroaluminates as a function of melt acidity

Non-stoichiometric chloride salts of dioxotetrakis(imidazole)rhenium(V) cations

Liquid Nickel Salts: Synthesis, Crystal Structure Determination, and Electrochemical Synthesis of Nickel Nanoparticles

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