结构相变在0D (3,5-DMP) 2Bi1-SbCl5金属化物:孤独对效应和多面扭曲的表达
Subhasish Sahoo1, Rajanikanta Rana2, Saroj L Samal1
1Solid State and Materials Laboratory, Department of Chemistry, National Institute of Technology, Rourkela 769008, India.
Inorganic chemistry
|April 8, 2024
概括
合成了具有零维结构的基于/的无新型有机-无机金属化物. 研究了它们的结构和光学特性,揭示了在Sb替换时发生的相位过渡,这对于调节发光至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 光物理学的光学物理学
背景情况:
- 基于Bi/Sb的低维有机-无机金属化物 (OIMH) 以其多样化的结构和发光而闻名.
- 了解结构-属性关系是优化应用程序发光的关键.
- 由于环境和安全原因,人们在寻找无OIMH.
研究的目的:
- 综合和描述基于Bi/Sb的新型零维 (0D) OIMHs.
- 为了研究Sb替代对结构和发光特性的影响.
- 探索结构相变和光学特征之间的关系.
主要方法:
- 合成 (3,5-DMP) 2BiCl5 和 (3,5-DMP) 2SbCl5 [(3,5-DMP) = 3,5-二甲基胺].
- 结晶学分析以确定0D结构和空间组 (三临床和单临床).
- 测量光波段间隙,并研究Sb替代对结构和光学性能的影响.
主要成果:
- 两种新的OD OIMHs, (3,5-DMP) 2BiCl5 (三临床) 和 (3,5-DMP) 2SbCl5 (单临床),已经成功合成.
- 这两种化合物都表现出半导体行为,间接光学带间隙约为3.35 eV,并且具有高稳定性.
- 替代引发结构应变和从三临床到单临床的相变,影响光学特性.
结论:
- 合成的基于Bi/Sb的OIMH显示出有前途的半导体和发光特性.
- 由Sb替代驱动的结构相变提供了调整光学属性的途径.
- 这项研究为设计具有定制发光的0D混合金属化物提供了洞察力.
更多相关视频
相关概念视频
02:58Crystal Field Theory - Octahedral Complexes
26.4K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
26.4K
02:46Crystal Field Theory - Tetrahedral and Square Planar Complexes
42.4K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
42.4K
02:42Valence Bond Theory
8.5K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
8.5K
02:37Metallic Solids
18.4K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
18.4K
02:57Coordination Number and Geometry
15.7K
For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
15.7K
03:35Hybridization of Atomic Orbitals II
32.2K
sp3d and sp3d 2 Hybridization
32.2K