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Related Concept Videos

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.
Introduction to Functional Groups02:08

Introduction to Functional Groups


Functional groups are group of atoms with specific chemical properties that occur within organic molecules and sometimes denoted as “R”. Functional groups are found along the carbon backbone of macromolecules can form chains or rings of carbon atoms. Functional groups can “functionalize” a compound by enabling it to adopt different physical and chemical properties.
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Crystal Field Theory
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CFT focuses on...
Coordination Number and Geometry02:57

Coordination Number and Geometry

For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
Overview of Advanced Functional Groups02:22

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Metal-Ligand Bonds02:51

Metal-Ligand Bonds

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

Functional group effects on metal-organic framework topology.

Phuong V Dau1, Kristine K Tanabe, Seth M Cohen

  • 1Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA.

Chemical Communications (Cambridge, England)
|August 17, 2012
PubMed
Summary

Researchers functionalized a key ligand, H(3)BTB, creating new metal-organic frameworks (MOFs). One MOF-177-OMe is an isostructural analogue, while another with hydroxy groups forms a rare interpenetrated framework.

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Area of Science:

  • Materials Science
  • Chemistry
  • Nanotechnology

Background:

  • The ligand 1,3,5-tris(4-carboxyphenyl)benzene (H(3)BTB) is a crucial building block for metal-organic frameworks (MOFs).
  • Functionalization of ligands can tune the properties and structures of resulting MOFs.
  • MOF-177 is a notable MOF with potential applications in gas storage and separation.

Purpose of the Study:

  • To synthesize and characterize novel functionalized MOFs using modified H(3)BTB ligands.
  • To investigate the structural diversity and properties of MOFs derived from methoxy- and hydroxy-functionalized H(3)BTB ligands.
  • To explore the formation of isostructural analogues and rare framework topologies.

Main Methods:

  • Ligand synthesis: Functionalization of H(3)BTB with methoxy (H(3)BTB-[OMe](3)) and hydroxy (H(3)BTB-[OH](3)) groups.
  • MOF synthesis: Combination of functionalized ligands with Zn(II) ions.
  • Structural characterization: X-ray diffraction to determine the crystal structures of the resulting MOFs.

Main Results:

  • Formation of MOF-177-OMe, the first isostructural, functionalized analogue of MOF-177, using H(3)BTB-[OMe](3) and Zn(II).
  • Generation of a rare, interpenetrated pcu-e framework using H(3)BTB-[OH](3) and Zn(II).
  • Demonstration of how ligand functionalization impacts MOF topology and structure.

Conclusions:

  • Successful functionalization of H(3)BTB leads to diverse MOF structures.
  • The study expands the library of known MOFs and provides insights into structure-property relationships.
  • The newly synthesized MOFs offer potential for tailored applications based on their unique structural features.