European Journal of Inorganic Chemistry最新文献

The Front Cover shows the molecular structures of two ruthenium–indane complexes: one is a binuclear Ru complex bridged by 1,2-bis(diphenylphosphino)ethane (dppe) ligand and the other is a mononuclear chelating 1,3-bis(diphenylphosphino)propane (dppp) complex. For the mononuclear complex, the Ru−P (P trans to In) bond distance (2.4076(11) Å) is shorter than the Ru−P (P trans to CO) one (2.4227(11) Å). It is known that both InCl₃ and CO exhibit electron-withdrawing properties, but no comparison of their electron-withdrawing strengths has been reported. This result is the first to show that the InCl₃ ligand withdraws electron density from Ru more strongly than the CO ligand. In addition, the mononuclear Ru−In complexes exhibit catalytic activity for the double hydrosilylation of organonitriles. More information can be found in the Research Article by M. Itazaki and co-workers.

Metal-organic frameworks of the CPO-27 (MOF-74) series are known for their high adsorption capacities for nitrogen oxides. On the other hand, significantly varying and partly contradictory results were reported regarding their stability to moisture. This aspect has hampered the use of these MOFs in air filtration applications. Here, we show that the stability of CPO-27 materials towards moisture and CO₂ crucially depends on the synthesis parameters. By precisely adjusting the synthetic parameter-property relationship, it is possible to prepare a highly stable CPO-27(Ni) MOF by a simple precipitation in water. To demonstrate the capacity for NO₂, breakthrough experiments were performed under dry and wet conditions (55% relative humidity). Extremely high values of nearly 0.74 g/g in dry conditions and 1.23 g/g under wet conditions were achieved. These results pave the way for the toxicologically safe and cost-effective preparation of a moisture-stable CPO-27(Ni), bridging the gap to a potential industrial application of the material for the selective adsorption of toxic gases, such as NO₂.

The Front Cover shows the electrocatalytic activity of a cobalt corrole for CO₂ reduction. In their Research Article, A. Aukauloo, G. Canard and co-workers report how they designed an electron-deficient A₂B-type corrole featuring two −CF₃ groups and a cyanobenzene at the meso positions, along with its cobalt complex. When adsorbed on a carbon electrode, the A₂B cobalt corrole exhibited excellent catalytic performance for CO production and demonstrated the ability to convert CO₂ to methanol.

The Front Cover illustrates the synthesis of a family of pyrenyl-(NHC)MCl coinage metal complexes, M=Cu^I, Ag^I and Au^I, (NHC=N-heterocyclic carbene). These compounds are stable and were obtained in high yields. The molecular structures of all complexes were ascertained by X-ray diffraction studies. The use of the chromophoric-(NHC) ligand endows these complexes with emissive properties in the blue region at a similar wavelength to the magical natural blue light created by phytoplankton on the surface of the ocean at nightfall. More information can be found in the Research Article by H. Amouri and co-workers.

Perfluorinated β-diketones form chelation complexes with rare earth and transition metals. Six heterocyclic dicarbonyl ligands demonstrate chelation activity toward Th^IV at acidic pH in aqueous solution. The “true” stability constants lie in the range 6.2–6.8 logarithmic units and are much greater than for lanthanide complexes. A significant bathochromic shift between the maximum absorption wavelength of lanthanide and actinide monocomplexes of β-diketones was detected. The spectral shift increases with the atomic number of the substituted chalcogen atom in the heterocyclic ring of the corresponding ligand. More information can be found in the Research Article by M. A. Lutoshkin and co-workers.

A metal-rich niobium oxyiodide was prepared by soft reduction of NbI₄. The structure of the new compound Nb₄OI₁₀ was determined by single-crystal X-ray diffraction and contains a rectangular Nb₄(μ₄-O) cluster that is interconnected into layers by iodide ligands. The local structure of the Nb₄OI₁₀ cluster bears a close relationship to a defect Nb₆I₁₁ structure. The two-dimensional van der Waals material $$Nb₄OI₈I_4/2] is a small band-gap semiconductor (<1 eV), as analysed by electrical conductivity measurements, photoresponse, experimental band gap determination, and band structure calculation.