Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Coordination Compounds and Nomenclature02:54

Coordination Compounds and Nomenclature

21.6K
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...
21.6K
Structural Isomerism02:34

Structural Isomerism

19.4K
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...
19.4K
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

21.0K
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...
21.0K
Redox Titration: Other Oxidizing and Reducing Agents01:26

Redox Titration: Other Oxidizing and Reducing Agents

333
Besides iodine, other oxidizing or reducing agents can serve as titrants in redox titrations. Common oxidizing titrants include KMnO4, cerium(IV), and K2Cr2O7. The choice of oxidizing titrants depends on factors like stability, cost, analyte strength, and reaction rate between the analyte and titrant. KMnO4 is a strong oxidizing titrant that reduces from Mn(VII) to Mn(II) in a highly acidic solution, simultaneously oxidizing the analyte to a higher oxidation state. In this case, KMnO4 acts as a...
333
Properties of Transition Metals02:58

Properties of Transition Metals

26.2K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
26.2K
Rate-Determining Steps03:08

Rate-Determining Steps

32.7K
Relating Reaction Mechanisms
In a multistep reaction mechanism, one of the elementary steps progresses significantly slower than the others. This slowest step is called the rate-limiting step (or rate-determining step). A reaction cannot proceed faster than its slowest step, and hence, the rate-determining step limits the overall reaction rate.
The concept of rate-determining step can be understood from the analogy of a 4-lane freeway with a short-stretch of traffic-bottleneck caused due to...
32.7K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Antiferromagnetic Arsenides U<sub>8</sub>Co<sub>42</sub>As<sub>25</sub> and UCo<sub>3</sub>As<sub>2</sub>.

Inorganic chemistry·2026
Same author

Electrolyte-Guided Selectivity Unlocks Pathway Control in Electrochemical Olefin Functionalization.

Journal of the American Chemical Society·2026
Same author

Sodium Tetraazidoaurate(III)-From Na[AuCl<sub>4</sub>]·2H<sub>2</sub>O to Na[Au(N<sub>3</sub>)<sub>4</sub>] and Beyond One Step at a Time.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same author

Giant Magnetostriction in Ferrimagnetic SmFe<sub>5</sub>As<sub>3</sub>.

Angewandte Chemie (International ed. in English)·2026
Same author

Emergent Heavy-Fermion Physics in a Family of Topological Insulators <i>R</i>AsS (<i>R</i> = Y, La, and Sm).

Journal of the American Chemical Society·2026
Same author

Unusual Magnetic Order in Eu<sub>11-<i>x</i></sub> Hg<sub>54+<i>x</i></sub>.

ACS organic & inorganic Au·2026

相关实验视频

Updated: Jul 20, 2025

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
10:51

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes

Published on: April 10, 2015

12.2K

化酸盐 (IV):LiSr2[CrN3] 它们的含量是什么?

Natalia Gloriozova1, Yurii Prots1, Franziska Jach1,2

  • 1Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany.

Inorganic chemistry
|August 3, 2023
PubMed
概括

研究人员发现了一种新的四元化酸盐 (IV) 化合物,LiSr2[CrN3],呈现出一种新的晶体结构. 这种材料具有1.19 eV带隙的半导体特性,表明潜在的电子应用.

更多相关视频

Synthesis and Evaluation of a Ruthenium-based Mitochondrial Calcium Uptake Inhibitor
07:12

Synthesis and Evaluation of a Ruthenium-based Mitochondrial Calcium Uptake Inhibitor

Published on: October 26, 2017

7.9K
Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
13:21

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging

Published on: July 21, 2011

15.0K

相关实验视频

Last Updated: Jul 20, 2025

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
10:51

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes

Published on: April 10, 2015

12.2K
Synthesis and Evaluation of a Ruthenium-based Mitochondrial Calcium Uptake Inhibitor
07:12

Synthesis and Evaluation of a Ruthenium-based Mitochondrial Calcium Uptake Inhibitor

Published on: October 26, 2017

7.9K
Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
13:21

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging

Published on: July 21, 2011

15.0K

科学领域:

  • 固态化学 固态化学
  • 无机材料科学 是一种无机材料科学.
  • 晶体学 晶体学是指结晶学.

背景情况:

  • 化酸盐是一种重要的无机化合物,具有多样化的结构和电子性质.
  • 了解新型酸盐的合成和表征对于探索新材料至关重要.
  • 之前的研究集中在化酸盐 (III) 上,但化酸盐 (IV) 仍未得到充分研究.

研究的目的:

  • 为了合成和表征一种新的四级化酸盐 (IV) 化合物.
  • 为了确定新型化合物的晶体结构和结合.
  • 研究合成材料的电子特性和潜在应用.

主要方法:

  • 单晶X射线衍射用于结构确定.
  • 用于化学表征的元素分析和振动光谱学.
  • 电子结构计算 (例如,DFT) 来确定带间隙和电子行为.

主要成果:

  • 四级化酸 ((IV) LiSr2[CrN3]已成功合成,并在非中心对称空间组P21中的新结构类型中结晶.
  • 结构分析显示三角形[CrN3]5-单位连接,形成板块.
  • 实验数据 (Cr-N 键长,二磁性,光谱学) 和电子结构计算 (1.19 eV 带间隙) 证实了Cr的氧化状态和半导体性质.

结论:

  • Sr2[CrN3]代表了一种具有独特晶体结构的新型四级化酸 ((IV).
  • 该化合物表现出半导体特性,表明其在电子领域的应用潜力.
  • 对化酸盐的进一步研究 (IV) 可能会导致发现具有定制电子功能的材料.