A porous and redox active ferrocenedicarboxylic acid based aluminium MOF with a MIL-53 architecture.

A metallocene based linker 1,1'-ferrocenedicarboxylic acid (H2FcDC) was used to synthesise the first permanently porous ferrocenedicarboxylate, exhibiting a MIL-53 architecture. This compound Al-MIL-53-FcDC [Al(OH)(FcDC)] is obtained in glass vials under mild synthesis conditions at ≤100 °C and after a short reaction time of 90 min. The crystal structure was determined from powder X-ray diffraction data and the compound shows porosity towards N2 and H2O, exhibiting a BET surface area of 340 m2 g-1.

Molybdenum dinitrogen complex supported by a cyclohexane-based triphosphine ligand and dmpm.

We report the first molybdenum dinitrogen complex supported by a cyclohexane-based triphosphine ligand. By employing several spectroscopic methods we are able to pinpoint the pentaphosphine environment and evaluate the activation of the dinitrogen ligand. Furthermore, we conduct protonation experiments and obtain spectroscopic evidence for the formation of a hydrazido-species.

Dihydroxybenzoquinone as Linker for the Synthesis of Permanently Porous Aluminum Metal-Organic Frameworks.

Two new dihydroxybenzoquinone-based metal-organic frameworks, ((CH3)2NH2)3[Al4(L1)3(L1(•))3]·3DMF (1, denoted CAU-20) and ((CH3)2NH2)3[Al4(L2)3(L2(•))3]·9DMF (2, denoted CAU-20-Cl2), were synthesized at 120 °C in DMF using 2,5-dihydroxy-p-benzoquinone ((C6H2(OH)2(O)2), H2L1) and 2,5-dichloro-3,6-dihydroxy-p-benzoquinone ((C6Cl2(OH)2(O)2), H2L2), respectively. Compared to other Al-MOFs, which contain carboxylate or phosphonate groups that connect the metal sites, in 1 and 2 the Al(3+) are coordinated by oxido groups. The metal ions are octahedrally surrounded by oxygen atoms of the deprotonated linker molecules to generate honeycomb layers with a metal to linker ratio of Al: L1/L2 = 2:3.