一个单核 PrIII 复合物的晶体结构与库库比特[6]uril
George V Fedorenko1, Oleksandr I Zbruyev2, Anna V Pavlishchuk1,3
1L. V. Pisarzhevskii Institute of Physical Chemistry of the National Academy of Sciences of Ukraine, Prospect Nauki 31, Kyiv, 03028, Ukraine.
概括
一个新的praseodymium(III) 复合物与黄[6]uril使用热水方法合成. 这种单核复合体的特点是,它对离子具有独特的协调环境,影响其结构性质.
科学领域:
- 协调化学 协调化学
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
背景情况:
- 黄瓜[6]uril (CB6) 是一种具有独特结合性质的宏环宿主分子.
- (praseodymium) 是一种类离子,在催化和材料科学中具有多种应用.
- 新型金属有机复合物的合成对于推进协调化学至关重要.
研究的目的:
- 为了合成和表征一种新的单核praseodymium(III) 复合物,该复合物包含黄素[6]uril.uril.
- 研究合成复合物的协调环境和结构特征.
- 探索库库比特[6]uril作为兰化离子的连接体的潜力.
主要方法:
- 库库尔比特[6]uril和praseodymium (III) 酸盐六酸盐之间的热水反应.
- 单晶X射线衍射分析以确定晶体结构.
- 用于表征的光谱和分析技术.
主要成果:
- 一个新的单核复合体,[Pr(NO3)(CB6)(H2O)5)(NO3) 2·9.56H2O (1),已成功合成.
- 复合物1在P21/n空间组中结晶,揭示了两个独立的普拉西奥迪 (praseodymium) 复合物子.
- 离子在扭曲的PrO9环境中表现出非协调性,涉及CB6,酸盐和水联体.
结论:
- 这项研究表明,库库尔比特[6]uril成功地被纳入了praseodymium(III) 协调复合体.
- 在praseodymium(III) 离子周围的独特协调几何学为兰坦化-联结体相互作用提供了洞察力.
- 这项工作扩大了库库比特[6]和基超分子组件和协调化学的范围.
更多相关视频
![Quantitative SERS Detection of Uric Acid via Formation of Precise Plasmonic Nanojunctions within Aggregates of Gold Nanoparticles and Cucurbit[n]uril](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F61682.jpg&w=3840&q=50)
10:02Quantitative SERS Detection of Uric Acid via Formation of Precise Plasmonic Nanojunctions within Aggregates of Gold Nanoparticles and Cucurbit[n]uril
Published on: October 3, 2020
3.8K
10:42Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
Published on: December 29, 2016
10.7K
相关概念视频
02:46Crystal Field Theory - Tetrahedral and Square Planar Complexes
42.0K
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,...
42.0K
02:42Ionic Crystal Structures
14.3K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
14.3K
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
02:58Crystal Field Theory - Octahedral Complexes
26.3K
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...
26.3K
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
02:54Coordination Compounds and Nomenclature
21.3K
In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
21.3K