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Updated: Jun 13, 2026
Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
Published on: May 12, 2023
Metal inorganic frameworks: dynamic flexible architecture with extended pore order built from [Se(3)](2-) linkers and
Nan Ding1, Gerasimos S Armatas, Mercouri G Kanatzidis
1Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA.
Abstract:
A mesostructured chalcogenide built from Chevrel-type clusters [(Re(6)Se(6)Br(2))Br(6)(T)](2-) linked by ditopic [Se(3)](2-) anions and synthesized in the presence of a cationic surfactant template is reported. This new mesophase, h-C(18)PyReSeBr, exhibits remarkably well ordered hexagonal symmetry from which a reasonable structural model can be deduced on the basis of powder X-ray diffraction as well as pair distribution function (PDF) analysis. Small-angle X-ray scattering (SAXS) analysis shows that h-C(18)PyReSeBr possesses an enormous interfacial area of 477 m(2)/g between the inorganic framework and the guest surfactant cations, which is comparable to that of mesoporous silicas when heavy metals contained in the framework are taken into consideration. The framework of h-C(18)PyReSeBr exhibits great flexibility and responds dynamically to the extraframework cations via an ion-exchange process.
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