Magnesium Borohydride Confined in a Metal–Organic Framework: A Preorganized System for Facile Arene Hydroboration

Abstract

In nächster Nähe: Anders als unter analogen Bedingungen in homogener Lösung reagiert Magnesiumborhydrid als Teil eines metall‐organischen Netzwerks mit Arenen unter Hydroborierung (siehe Schema). Die erforderliche Ausrichtung der reaktiven Gruppen im Netzwerk wird durch Metallkoordination und Diwasserstoffbrücken erzielt.

Porous and Dense Magnesium Borohydride Frameworks: Synthesis, Stability, and Reversible Absorption of Guest Species

“…Porous Mg(BH 4 ) 2 opens up a new class of framework materials, that is, the metal borohydride frameworks, which adds to the emerging group of novel nanoporous solids, such as flexible MOFs [27] and peptides with adaptable porosity. [28] The similarity of these frameworks to MOFs provides a route to novel hybrid materials: combined use of the BH 4 À ions with other directional ligands [29] may produce new porous materials, with high gas adsorption enthalpy and selectivity of absorption, demonstrated by g-Mg(BH 4 ) 2 . In particular, the same framework topology is observed for g-Mg(BH 4 ) 2 and zinc imidazolate framework ZIF-72, [14] and thus prompts the combined use of BH 4 À and imidazolate ions as ligands.…”

Porous and Dense Magnesium Borohydride Frameworks: Synthesis, Stability, and Reversible Absorption of Guest Species

“…Porous Mg(BH 4 ) 2 opens up a new class of framework materials, that is, the metal borohydride frameworks, which adds to the emerging group of novel nanoporous solids, such as flexible MOFs27 and peptides with adaptable porosity 28. The similarity of these frameworks to MOFs provides a route to novel hybrid materials: combined use of the BH 4 − ions with other directional ligands29 may produce new porous materials, with high gas adsorption enthalpy and selectivity of absorption, demonstrated by γ‐Mg(BH 4 ) 2 . In particular, the same framework topology is observed for γ‐Mg(BH 4 ) 2 and zinc imidazolate framework ZIF‐72,14 and thus prompts the combined use of BH 4 − and imidazolate ions as ligands.…”

Nanoconfined ammonia borane in a flexible metal–organic framework Fe–MIL-53: clean hydrogen release with fast kinetics

“…Indeed, recent studies indicated that nanoconnement of hydrogen storage materials in porous scaffolds not only improves the dehydrogenation kinetics but also prevents unwanted by-product generation. [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] To date, a number of porous support materials have been investigated to obtain metal-hydrides at the nanoscale. These include silica, 15 carbon allotropes 16,17 and metal-organic frameworks [8][9][10][11][12][13][19][20][21][22][23] (MOFs).…”

“…[8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] To date, a number of porous support materials have been investigated to obtain metal-hydrides at the nanoscale. These include silica, 15 carbon allotropes 16,17 and metal-organic frameworks [8][9][10][11][12][13][19][20][21][22][23] (MOFs). In particular, MOFs are the most promising scaffold materials because of their unique interior active metal-centres for AB binding and well dened and ordered pores.…”