面向结构多样性的中子离子N-异环烯酸联体及其对,黄金和化的协调
Tisa Ževart1, Balazs Pinter2, Matic Lozinšek3
1Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI 1000 Ljubljana, Slovenia. Janez.Kosmrlj@fkkt.uni-lj.si.
Dalton transactions (Cambridge, England : 2003)
|April 9, 2024
概括
研究人员合成了基于1,2,3-三醇的新型中性N-异环烯酸 (mNHO) 连接体. 这些连接体有效地与和黄金协调,并与化形成添加物,显示化学减少的潜力.
科学领域:
- 有机金属化学 有机金属化学
- 异环化学 异环化学
- 连接体设计 连接体设计
背景情况:
- 1,2,3-二醇衍生物是药物和材料化学中的多功能支架.
- 介质性N-异环碳化合物 (NHCs) 是具有独特电子性质的强西格玛捐赠体.
- 新型连接体架构的开发对于促进催化和协调化学的发展至关重要.
研究的目的:
- 开发一种基于1,2,3-三醇的中性N-异环烯酸 (mNHO) 连接物的高效合成.
- 研究mNHOs与,黄金和化的协调化学反应.
- 探索这些新联体及其金属复合物的潜在应用.
主要方法:
- 1,3,4-triaryl-1,2,3-triazolium盐的合成及其去化为mNHO配体.
- 与,黄金前体和的协调反应.
- 使用NMR光谱法进行表征 (例如13C NMR).
- 计算研究包括债券订单和收费分析.
主要成果:
- 成功合成了一个mNHO配体家族.
- 形成-mNHO和金-mNHO协调复合体.
- 描述mNHOs作为强大的西格玛捐赠者.
- 一个BH3-mNHO adduct的合成及其在和减少中的初步测试.
结论:
- 开发的mNHO配体是高效和多用途的.
- 这些配体表现出强大的sigma-donor特性,使它们适合于协调化学.
- 在有机合成中,BH3-mNHO添加物显示出减少应用的前景.
相关概念视频
Coordination Compounds and Nomenclature
21.1K
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...
21.1K
Metal-Ligand Bonds
19.3K
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...
19.3K
Structural Isomerism
16.9K
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,...
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,...
16.9K
Valence Bond Theory
8.9K
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...
8.9K
Regioselectivity and Stereochemistry of Hydroboration
7.8K
A significant aspect of hydroboration–oxidation is the regio- and stereochemical outcome of the reaction.
Hydroboration proceeds in a concerted fashion with the attack of borane on the π bond, giving a cyclic four-centered transition state. The –BH2 group is bonded to the less substituted carbon and –H to the more substituted carbon. The concerted nature requires the simultaneous addition of –H and –BH2 across the same face of the alkene giving syn...
Hydroboration proceeds in a concerted fashion with the attack of borane on the π bond, giving a cyclic four-centered transition state. The –BH2 group is bonded to the less substituted carbon and –H to the more substituted carbon. The concerted nature requires the simultaneous addition of –H and –BH2 across the same face of the alkene giving syn...
7.8K
Properties of Organometallic Compounds
2.1K
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
2.1K


