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Related Concept Videos

Metal-Ligand Bonds02:51

Metal-Ligand Bonds

25.2K
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...
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Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

1.9K
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.
1.9K
Structural Isomerism02:34

Structural Isomerism

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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...
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Valence Bond Theory02:42

Valence Bond Theory

11.5K
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...
11.5K
Introduction to Chemical Bonds01:01

Introduction to Chemical Bonds

13.2K
Chemical Bonds
The electrons of the outermost energy level determine the energetic stability of the atom and its tendency to form chemical bonds with other atoms. The innermost electron shell has a maximum capacity of two electrons, but the next two electron shells can each have a maximum of eight electrons. This is known as the octet rule, which states that, with the exception of the innermost shell, atoms are most stable energetically when they have eight electrons in their valence shell, the...
13.2K
Lewis Structures of Molecular Compounds and Polyatomic Ions02:54

Lewis Structures of Molecular Compounds and Polyatomic Ions

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To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
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Related Experiment Video

Updated: Mar 13, 2026

Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
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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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Water-generated dangling linkers in a metal-organic framework.

Yao Fu1,2, Yifeng Yao3, Subhradip Paul1

  • 1Univ. Grenoble Alpes, CEA, IRIG-MEM, Grenoble, France.

Nature Communications
|March 12, 2026
PubMed
Summary
This summary is machine-generated.

Water reversibly alters the structure of highly stable Metal-Organic Frameworks (MOFs), like UiO-66. This molecular transformation, driven by water adsorption and desorption, redefines understanding of water-MOF interactions.

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Synthesis and Characterization of Functionalized Metal-organic Frameworks

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Related Experiment Videos

Last Updated: Mar 13, 2026

Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
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Synthesis and Characterization of Functionalized Metal-organic Frameworks
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Synthesis and Characterization of Functionalized Metal-organic Frameworks

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Area of Science:

  • Materials Science
  • Chemistry
  • Nanotechnology

Background:

  • Metal-Organic Frameworks (MOFs) show promise in water-related applications.
  • Understanding water-MOF interactions is key for designing stable materials.
  • Water can either passively interact or reactively degrade MOFs.

Purpose of the Study:

  • Investigate water's impact on the metal-linker bonds in the stable UiO-66 MOF.
  • Elucidate the molecular mechanisms of water interaction with MOFs.
  • Challenge existing paradigms of MOF stability in aqueous environments.

Main Methods:

  • Utilized multidimensional solid-state Nuclear Magnetic Resonance (NMR).
  • Employed advanced dynamic nuclear polarization (DNP) techniques.
  • Performed computational calculations to support experimental findings.

Main Results:

  • Observed water adsorption displaces carboxylate linkers in UiO-66, forming dangling groups.
  • Demonstrated that these structural changes are reversible upon water removal.
  • Identified hydrogen bonding with water and μ3-OH as stabilizing factors for dangling groups.

Conclusions:

  • UiO-66 exhibits a reversible structural evolution in response to water.
  • Water's interaction with MOFs can induce dynamic structural changes, not just degradation.
  • This research redefines the understanding of water-MOF interactions and MOF stability.