Specifically, the tolerance values fall within the range of 0.95–1.10, while the octahedral values are situated between 0.43 and 0.59. These findings suggest that the material crystal lattice is highly ordered, which is a crucial aspect of perovskite structure stability. Notably, the precision and...
3(b) where λem = 590 nm, where all of the excitation peaks can be attributed to Mn2+ in an octahedral crystal field. The excitation spectrum of Fig. 3(b) was fitted to several Gaussians in order to determine the energies of the Mn2+ transitions. We find that 10Dq = ...
This compound has been treated as a prototype system in which the orbital ordering is induced by the superexchange interaction alone in the Kugel–Khomskii (KK) model [3]. The orbital ordering from this model results in a CuF6 octahedral-site distortion that consists of four long and two ...
An effect of the spin-orbit coupling interaction of ligand orbitals on the ground state for octahedral , , and type complexes has been investigated in this work, applying the degenerate perturbation theory. The wave functions are not affected but the energy level splitting for the ground state of...
For a small fraction of the ions the octahedral field is subject to tetragonal and ortho-rhombic crystal field distortions. The g-values of these ions indicate a crystal field splitting 10Dq=k× 18,000 cm.–1, where k is the orbital reduction factor. Superhyperfine structure from the 19F ...
铜的两种配合物颜色不同的原因 为什么[Cu(H2O)4]2+的颜色比[Cu(NH3)4]2+的颜色浅First, in aqueous solution you have [Cu(H2O)6]2+ and [Cu(NH3)4(H2O)2]2+.They both have a distorted octahedral structure with two H2O's located on the axial positions (D4h symmetry). For simplicity, ...
•Intratomic(Localized)excitations –Cr3+Gemstones(i.e.Cr3+inRubyandEmerald)–BlueandGreenCu2+compounds(i.e.malachite,turquoise)–BlueCo2+compounds(i.e.Al2CoO4,azurite)–Fe2+Ti4+insapphire–Fe2+Fe3+inPrussianBlue–O2-Cr6+inBaCrO4 •Charge-transferexcitations(metal-metal,anion-...
晶体场理论(crystal field theory) 配位原子(coordinating atom) 杂化类型(hybridization type) 内轨(inner orbital) 外轨(outer orbital) 磁性(magnetism) 点电荷(point charge) 过渡金属(transition-metal) 分裂能(splitting energy) 电子成对能(pairing energy) 高、低自旋(high-spin, low spin) 晶体场稳定化能(...