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相关概念视频

Organic Compounds03:02

Organic Compounds

All living things are formed mostly of carbon compounds called organic compounds. The category of organic compounds includes both natural and synthetic compounds that contain carbon. Although a single, precise definition has yet to be identified by the chemistry community, most agree that a defining trait of organic molecules is the presence of carbon as the principal element, bonded to hydrogen and other carbon atoms. However, some carbon-containing compounds such as carbonates, cyanides, and...
Lewis Structures of Molecular Compounds and Polyatomic Ions02:54

Lewis Structures of Molecular Compounds and Polyatomic Ions

To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
Exceptions to the Octet Rule02:55

Exceptions to the Octet Rule

Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three categories:
Coordination Compounds and Nomenclature02:54

Coordination Compounds and Nomenclature

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...
Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

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.
Characteristics and Nomenclature of Homopolymers01:00

Characteristics and Nomenclature of Homopolymers

Polymers that are made up of identical monomer units are called homopolymers. Only one repeating unit is involved in the construction of the homopolymer structure. For example, as depicted in Figure 1, polypropylene is a homopolymer constituted of propylene monomers. Here, the only repeating unit in the polymer chain is propylene.

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Updated: Jul 17, 2026

Synthesis and Characterization of Functionalized Metal-organic Frameworks
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Published on: September 5, 2014

Cu(2)[o-Br-C(6)H(3)(CO(2))(2)](2)(2)(H(2)O)(2)) 是一个有机体. (DMF) (8) (H) (2) (O) (2):一个有意设计的框架,具有NbO结构类型的框架.

Mohamed Eddaoudi1, Jaheon Kim, Michael O'Keeffe

  • 1Materials Design and Discovery Group, Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, USA.

Journal of the American Chemical Society
|January 17, 2002
PubMed
概括

研究人员使用特定的链接器设计了一种新的NbO型金属有机框架 (MOF-101). 这种MOF-101呈现出具有大孔的非互穿结构,为材料科学应用提供了有趣的可能性.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 晶体学 晶体学是指结晶学.
  • 化学 化学 化学

背景情况:

  • 金属有机框架 (MOF) 是具有多种应用的晶体多孔材料.
  • NbO型结构是一种具有独特属性的特定网络拓.
  • 控制MOF拓和孔隙性对于目标应用至关重要.

研究的目的:

  • 合成一种新的NbO型金属有机框架 (MOF-101).
  • 研究合成的MOF的结构特征,特别是它的多孔性和相互透性.
  • 探索链接器设计和由此产生的框架拓之间的关系.

主要方法:

  • 使用o-Br-BDC (化二碳酸盐) 作为连接剂的溶热合成.
  • 单晶X射线衍射用于完整的结构确定.
  • 使用晶体学数据分析毛孔大小,空隙体积和相互透.

主要成果:

  • 成功合成和表征MOF-101,其配方为Cu2[o-Br-BDC]2(H2O) 2. (DMF) 8 (H2O) 2.0.0.2 (DMF) 8 (H2O) 2.0.2 (DMF) 2.0.2 (H2O) 2.0.3 (DMF) 2.0.4 (H2O) 2.0.5 (DMF) 2.0.6 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.7 (H2O) 2.0.8 (H2O)
  • MOF-101表现出目标NbO型结构,具有大孔和空隙.
  • 尽管有多孔性,但MOF-101被发现具有非互穿的结构.

结论:

  • 设计的合成策略有效地产生了所需的NbO型MOF.
  • MOF-101是一种新的多孔材料,在气体储存或分离方面具有潜在的应用.
  • 尽管MOF-101有很大的孔隙,但其不相互透的性质要求进一步研究结构与属性之间的关系.