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| ==See also== | | ==See also== |
| | | * [[A catalytic molybdenum metal-organic framework]] |
| * [[Metal-Ligand Polyhedra]] | |
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| -----------------------
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| A catalytic molybdenum metal-organic framework | |
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| <StructureSection load='1d66' size='500' frame='true' side='right' caption='A Metal–organic framework structure: the CSD entry WUTXUH' scene='10/1092924/Csd_entry_wutxuh_basics/2' >
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| <!-- important to note you need to use 'side' in a StructureSection instead of 'align'. If you leave 'align' it doesn't work.-->
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| ==Background==
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| Metal-organic frameworks have been shown to be applicable to catalysis, among many other applications, as [[Proteopedia:Hot_News|highlighted three chemists doing seminal work in this field being awarded the Nobel Prize in Chemistry in 2025]].
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| A catalytic molybdenum metal-organic framework was synthesized from porphyrin and sodium molybdate dihydrate by a hydrothermal method.<br/>
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| The framework was characterized and shown to catalyze oxidation of cyclohexene.<br/>
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| Here the crystal structure of catalytic molybdenum metal-organic framework is featured.
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| ==A catalytic molybdenum metal-organic framework==
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| <jmol>
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| <jmolCheckbox>
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| <scriptWhenChecked>select all; spacefill on;</scriptWhenChecked>
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| <scriptWhenUnchecked>select all; spacefill 0.35; select hydrogen; spacefill 0.25;</scriptWhenUnchecked>
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| <checked>false</checked>
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| <!-- <checked></checked> set it to false or delete it or comment it out as <checked>false</checked> or <checked> </checked>still show as checked-->
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| <text>CPK Spacefll mode</text>
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| </jmol>
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| <!--<scene name='70/701975/1d66_firstglance_secondary/2'>Each monomer</scene> of the protein dimer has 3 '''<font color='#f00080'> alpha helices</font>'''.
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| The protein <scene name='70/701975/1d66_firstglance/2'>binds as a dimer to a symmetrical 17-base-pair sequence</scene>. Specifically, the consensus Gal4p-binding site is a 17-mer of sequence conforming to the motif below, which has the key feature of CGG triplets at the 5' ends, separated by 11 bps, or 5′-CGG-N11-CCG-3′.<br>
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| <!--<span style="font-weight: bold;font-family: Courier New; font-size: 14pt">-->
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| <!-- By setting font to courier, I can use non-proportional font. Whereas by default, rest of Proteopedia is proportional
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| <span style="background:black;color:#FFC0C8">5'-CGGNNNNNNNNNNNCCG-3'</span><br>
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| <font style='background:black;color:#ffffff;'>|||||||||||||||||</font><br>
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| <span style="background:black;color:#FFFF80">3'-CGGNNNNNNNNNNNGGC-5'</span></span>-->
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| <br/>
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| <scene name='10/1092924/Csd_entry_wutxuh_set/4'>The CSD entry WUTXUH as a 1x1x3 set of the metal organic framework</scene>.
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| <scene name='10/1092924/Csd_entry_wutxuh_plane/4'>The CSD entry WUTXUH as a plane of the metal organic framework</scene>.
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| <jmol>
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| <script>load /wiki/scripts/10/1092924/Csd_entry_wutxuh_basics/2.spt</script>
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| <text>Restore Default Scene</text>
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| </jmolButton>
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| </jmol>
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| </StructureSection>
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| ==Technical Details==
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| The views featuring the 1x1x3 set and the plane were built using [https://chemapps.stolaf.edu/jmol/jsmol/jcse/explore.htm the Jmol Crystal Symmetry Explorer] to examine [https://www.ccdc.cam.ac.uk/structures/Search?Ccdcid=WUTXUH&DatabaseToSearch=CSD CSD Entry: WUTXUH].
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| ==Reference==
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| <ref group="xtra">PMID: 32744270</ref><references group="xtra"/>
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| ==See also==
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| * [[Metal-Ligand Polyhedra]] | | * [[Metal-Ligand Polyhedra]] |
| A cubic diamond lattice metal-organic framework
Background
Synthesized metal-organic frameworks have been shown to have a wide range of applications, as highlighted three chemists doing seminal work in this field being awarded the Nobel Prize in Chemistry in 2025.
Here the crystal structure of a cubic diamond metal-organic framework is featured; the CSD entry JARMEU.
This is the structure that revealed that a crystalline, diamondoid, extended framework was formed that had large cavities, establishing this class of solid polymeric materials.
A cubic diamond lattice metal-organic framework
Shown at the right is the building block of the lattice (restore initial scene).
C, N, Cu
The metal here is copper.
When the repeats of this building block are shown connected to others, the lattice appears. Viewing the the CSD entry JARMEU as a 1x1x3 set of the metal organic framework illustrates this.
When considered this way a beautiful diamondoid structure appears that is a 4-connected network.
The large cavities are visible as the lattice layers onto itself as the view of the structure rotates.
The cavities would contain anions and solvent that are not shown in this crystal structure as they'd be freely moving and randomly distributed.
The extensive nature of the network with the large cavities becomes more apparent if we consider more of the repeated building blocks.
The CSD entry JARMEU as a 1x3x3 plane of the metal organic framework. (Substatntial patience required when loading this scene; it is suggested to only do that after you have examined the others.)
Significance
Since the proposal of this class of materials, metal-organic framework have been proven to support many roles. Applications to gas storage, analytical chemistry and (bio)sensors, batteries and fuel cell technology, separation science, synthesis and catalysis, harvesting of water from dry (low humidity) air, water purification and environmental remediation, capture/destruction of harmful agents, energy conversion and storage, hydrogen generation, food
safety, and drug delivery & diagnostics/therapy have been demonstrated[1].
Highlighting the significance is the fact three chemists doing seminal work in this field were awarded the Nobel Prize in Chemistry in 2025. The structure featured here played a key role in establishing this field.
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Technical Details
The views featuring the 1x1x3 set and the plane were built using the Jmol Crystal Symmetry Explorer to examine CSD Entry: JARMEU.
References
See also
