An aqueous solution–solid-state study of the Cu(II) /HL system (HL5N-2-(4-amino-1,6-dihydro-1-methyl-5-nitroso-6-oxopyrimidinyl)glycine) is reported. The solution studies have been carried out on the protonation equilibria of HL and the Cu(II) /HL system, at molar ratios of 1:1 and 1:5. Two complexes were obtained in the solid state, Cu(II) /HL molar ratio51:1, and were characterized by spectro...

Correction for 'Single-molecule magnet behaviour in polynuclear assembly of trivalent cerium ions with polyoxomolybdates' by A. Ben Khélifa, et al., Dalton Trans., 2015, 44, 16458-16464.

Conditions that affect the sensitivity of the Ames assay of complex hydrocarbon mixtures derived from shale oil were studied. Two fractions, one enriched in polynuclear aromatic compounds (PNA fraction), and a second fraction enriched in aromatic and heterocyclic amines (basic fraction), were selected for most of this work because of their comparatively high mutagenicity (i.e., compared with ra...

Two polynuclear mixed-valence manganese clusters, [Mn(13)] and [Mn(16)], containing mixed chelating ligands were synthesized and structurally characterized. The alternating current (AC) susceptibilities of both complexes reveal nonzero frequency-dependent out-of-phase (χ(M)'') signals.

A new concept of critical point is expounded by analysing the potentiometric titration curves of aluminium salt solutions under the moderate slow rate of base injection. The critical point is defined as the characteristic spot of the Al salt solutions potentiometric titration curve, which is related to the experiment conditions. In addition, the changes of critical points reflect the influence ...

the traditional measurement methods of 3 kinds of aluminum species and the total aluminum content in polyaluminum solutions are al-ferron timed complex spectrophotometry and edta chelatometry respectively. but eachof these methods has different deficiencies. in this paper, microwave digesting technical had be coupled with the radiate ferron spectrophotometry to rapid mensurate the concentration...

Nine new mononuclear and polynuclear Cu(II) complexes [Cu(H2L )Cl]Cl·3H2O (1), [Cu(H2L )Cl]Cl·H2O (2), [Cu(H2L )Cl]Cl·2.5H2O (3), [Cu3(μ -L)2(H2O)3](ClO4)2·H2O (4), [Cu4(μ-HL )4](ClO4)8·CH3OH·5H2O (5), [Cu2(HL )2](ClO4)2·2H2O (6a), [Cu2(μ-HL )2](ClO4)2·H2O (6b), [Cu2(μ-HL )(L)Cu(teta)](ClO4)3·2H2O (7) and [Cu2(H2L )2(ox)](ClO4)2·2H2O·2MeOH (8) containing [5-(2-pyridine-2-yl)-1,2,4-triazole-3-yl...