比斯[μ-3-(皮里丁-2-) 皮拉索拉托]比斯-[乙酸-[3,5-二甲基-1H-皮拉) - (II) ]]
Thangamuniyandi Pilavadi1, Soundararajan Krishnan2, Nagarajan Loganathan1
1School of Chemistry Bharathidasan University, Tiruchirappalli 620 024 Tamilnadu India.
IUCrData
|September 9, 2024
概括
一种新型的双核 (II) 化合物[Ni-OOCCH3) [2-PyPz) [Me2PzH]2被合成并进行了表征. 这种协调复合体具有平面的Ni2核心,具有特定的N4O2协调,由键稳定.
科学领域:
- 协调化学 协调化学
- 无机化学 无机化学
- 晶体学 晶体学是指结晶学.
背景情况:
- 双核金属复合体具有独特的结构和电子特性.
- 皮拉联体是协调化学中的多功能构建块.
- (II) 复合物在催化和材料科学中具有重要意义.
研究的目的:
- 为了合成和表征一种新的双核 (II) 复合体.
- 为了阐明该化合物的晶体结构和协调环境.
- 为了研究晶格内部的分子间和分子内相互作用.
主要方法:
- 标题化合物的合成使用 (II) 乙烯酸四水合物,3-pyridin-2-yl) pyrazole (2-PyPzH),3,5-dimethylpyrazole (Me2PzH) 和三胺.
- 在100K的单晶X射线衍射分析以确定晶体结构和对称性.
- 协调环境的分析,包括赤道和轴联体的定位.
- 识别联网 (C-HO和N-HO) 的情况.
主要成果:
- 标题化合物[Ni(μ-OOCCH3) ((2-PyPz) ((Me2PzH) ]2 (1),已成功合成.
- 化合物1在单临床系统 (P21/n) 中结晶,具有结晶学逆对称性.
- 该结构的特点是平面双核Ni (II) 核心与N4O2协调球.
- 原子被一个去质子化的2-PyPz连接体所桥接,Me2PzH和酸连接体占据轴位置.
- 观察到大量的分子间和分子内键 (C-HO和N-HO).
结论:
- 双核 (II) 复合物的成功合成和结构确定为其协调化学提供了洞察力.
- 平面的Ni2核心和特定的连接体排列突出了基于Pyrazole的连接体在构建复杂的金属结构中的多功能性.
- 观察到的结网在稳定化合物1的晶体结构方面发挥着至关重要的作用.
更多相关视频
16:11Thermochemical Studies of NiII and ZnII Ternary Complexes Using Ion Mobility-Mass Spectrometry
Published on: June 8, 2022
2.2K
07:20Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents
Published on: May 28, 2014
14.0K
相关概念视频
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
02:51Metal-Ligand Bonds
20.6K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
20.6K
02:34Structural Isomerism
19.1K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
19.1K
02:54Coordination Compounds and Nomenclature
21.2K
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...
21.2K
01:19Diazonium Group Substitution: –OH and –H
2.7K
Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.
2.7K
02:57Coordination Number and Geometry
15.6K
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.
15.6K