12 Results Found

A series of ferrocenyl-functionalized β-diketonato manganese(III) complexes, [Mn(FcCOCHCOR)₃] with R = CF₃, CH₃, Ph (phenyl) and Fc (ferrocenyl) was subjected to a systematic XPS study of the Mn 2p_3/2 and Fe 2p_3/2 core-level photoelectron lines and t...

Energy levels of pentacoordinate d⁵ to d⁹ complexes were evaluated according to the generalized crystal field theory at three levels of sophistication for two limiting cases of pentacoordination: trigonal bipyramid and tetragonal pyramid. The electro...

The optical and magneto-optical characteristics of KTb₃F₁₀ crystals in the transition region of ⁵D₄ → ⁷F₆ 4f⁸ configurations of the Tb³⁺ ion at temperatures of 90 and 300 K were studied. The schemes of the optical transitions in the KTb₃F₁₀...

A review of recent advances in the study of the energy splitting between excited isobaric analogue states is presented. Some of the experimental developments, and new approaches, associated with spectroscopy of the most proton-rich members of isobari...

Tetragonal Er_0.5Nb_0.5O₂ and monoclinic ErNbO₄ micro- and nanoparticles were prepared by the citrate sol–gel method and heat-treated at temperatures between 700 and 1600 °C. ErNbO₄ revealed a spherical-shaped crystallite, whose size increased with hea...

Recently we have proposed a simple method for obtaining the parameters of a ligand field multiplet model for L-edge spectra calculations from density functional theory. Here we generalize the method to systems where the metal site has arbitrary point...

The group theoretical description of the periodic system of elements in the framework of the Rumer–Fet model is considered. We introduce the concept of a single quantum system, the generating core of which is an abstract $C^{*}$-algebra. It is shown...

Axions can be considered as good dark matter candidates. The detection of such light particles can be achieved by observing axion-induced atomic excitations. The target is in a magnetic field so that the m-degeneracy is removed, and the energy levels...

Layered clay systems intercalated with inorganic and organic compounds were analyzed to highlight how XPS can provide information on the different environments surrounding a particular atom as well as provide discernments on the size, coordination, a...

A collection of 24 hexacoordinate Co(II) complexes was investigated by ab initio CASSCF + NEVPT2 + SOC calculations. In addition to the energies of spin–orbit multiplets (Kramers doublets, KD) their composition of the spins is also analyzed, al...

Yttrium scandate crystals doped by Nd³⁺ and Tm³⁺ ions have been successfully grown in the form of fibers using the laser-heated pedestal growth (LHPG) technique. The selective laser spectroscopy methods have identified and distinguished three distinc...

Intensity of transitions from the $b^1{{\displaystyle \sum }}_{\mathrm{g}}^{+}$ and a¹Δ_g states to the ground state ${\mathrm{X}}^3{{\displaystyle \sum }}_{\mathrm{g}}^{-}$ in the near IR emission spectrum of the S₂ molecule has been calculated by the multireference configuration interaction method taking in...