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Related Concept Videos

Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

1.4K
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.
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Metal-Ligand Bonds02:51

Metal-Ligand Bonds

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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...
23.1K
Metallic Solids02:37

Metallic Solids

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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
20.1K
Ionic Crystal Structures02:42

Ionic Crystal Structures

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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...
16.4K
Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

673
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
673
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

29.5K
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...
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Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
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Calcium-Based Metal-Organic Frameworks and Their Potential Applications.

Shikai Xian1,2, Yuhan Lin1, Hao Wang1

  • 1Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, 7098 Liuxian Boulevard, Shenzhen, Guangdong, 518055, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)
|November 3, 2020
PubMed
Summary

Calcium-based metal-organic frameworks (Ca-MOFs) offer high stability and low toxicity. This review explores their synthesis, properties, and applications in areas like molecular separations and drug delivery.

Keywords:
calciumcoordination polymersgas adsorptionmetal-organic frameworksphotoluminescence

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Synthesis and Characterization of Functionalized Metal-organic Frameworks
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Area of Science:

  • Materials Science
  • Inorganic Chemistry
  • Nanotechnology

Background:

  • Metal-organic frameworks (MOFs) are crystalline porous materials with diverse applications.
  • Calcium-based MOFs (Ca-MOFs) are a unique subclass with notable stability, low toxicity, and low density.
  • Ca-MOFs are less explored than transition metal MOFs but offer advantages in specific applications.

Purpose of the Study:

  • To provide a comprehensive overview of recent advancements in Ca-MOFs.
  • To summarize synthesis methods, crystal structures, properties, and applications of Ca-MOFs.
  • To highlight structure-property relationships in Ca-MOF applications.

Main Methods:

  • Literature review of synthesis techniques for Ca-MOFs.
  • Analysis of crystal structures and porosity features.
  • Summary of physical properties and performance in various applications.

Main Results:

  • Ca-MOFs exhibit high stability, low toxicity, and low density, making them suitable for specific uses.
  • Potential applications include molecular separations, electronic/magnetic devices, and biomedical uses like drug delivery.
  • Gravimetric benefits are noted for light molecule adsorption and storage.

Conclusions:

  • Ca-MOFs present significant potential due to their favorable properties and biocompatibility.
  • Further research into Ca-MOFs can unlock their advantages over traditional MOFs.
  • Understanding structure-property relationships is key to optimizing Ca-MOF performance.