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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...
Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
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Surface Active Agents

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

Coordination pillared-layer type compounds having pore surface functionalization by anionic sulfonate groups.

Satoshi Horike1, Sareeya Bureekaew, Susumu Kitagawa

  • 1Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto, Japan.

Chemical Communications (Cambridge, England)
|January 12, 2008
PubMed
Summary
This summary is machine-generated.

Researchers developed a 3D porous coordination polymer using sulfonylterephthalate and zinc. This material features metal-free sulfonate groups, enabling effective sorption of acidic guests due to its Lewis basic properties.

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Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides
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08:12

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Published on: September 5, 2018

Area of Science:

  • Materials Science
  • Chemistry
  • Nanotechnology

Background:

  • Porous coordination polymers (PCPs) are advanced materials with tunable structures.
  • Functionalizing PCPs enhances their properties for specific applications.
  • Sulfonate groups can impart unique chemical characteristics to materials.

Purpose of the Study:

  • To synthesize and characterize a novel pillared-layer type 3D porous coordination polymer.
  • To investigate the role of metal-free sulfonate groups in the material's properties.
  • To evaluate the material's capacity for acid guest sorption.

Main Methods:

  • Solvothermal synthesis of the 3D porous coordination polymer using 2-sulfonylterephthalate, 4,4'-bipyridine, and Zn(2+).
  • Characterization using techniques such as X-ray diffraction and gas adsorption.
  • Sorption studies to assess the material's interaction with acid guests.

Main Results:

  • Successful synthesis of a pillared-layer type 3D porous coordination polymer.
  • Identification of metal-free sulfonate groups decorating the pore walls.
  • Demonstration of Lewis basic properties arising from the sulfonate groups.
  • Effective sorption of acid guests was observed.

Conclusions:

  • The synthesized 3D porous coordination polymer exhibits unique properties due to its functionalized pore walls.
  • The presence of metal-free sulfonate groups confers Lewis basicity, crucial for acid guest sorption.
  • This material shows potential for applications in acid gas capture and separation.