Sacrificial-Hydroxamate-Enabled Sizable Crystallization of Scandium Carboxylate Metal-Organic Frameworks.

Starting from labile hydroxamic acid ligands that are strong chelators, here, we implemented a sacrificial modulating strategy to prepare a series of scandium carboxylate metal-organic frameworks. Overcoming conventional syntheses that use excessive carboxylate modulators, the present strategy greatly reduces the organics required and produces large single crystals of several Sc-MOFs for X-ray crystallography.

Ce-hydroxamate metal-organic frameworks for photocatalytic H2 generation.

Exploring the rich coordination chemistry of Ce, here we report two new entries in the emerging category of hydroxamate-based metal-organic frameworks (MOFs). The two Ce-hydroxamate MOFs exhibited different band structures and photoelectrochemical properties based on their respective coordinative environments and overall structures, leading to varied H2 generation performances.

Two-dimensional Zr/Hf-hydroxamate metal-organic frameworks.

Novel two-dimensional kagome metal-organic frameworks with mononuclear Zr4+/Hf4+ nodes chelated by benzene-1,4-dihydroxamate linkers were synthesized. The MOFs, namely SUM-1, are chemically robust and kinetically favorable, as confirmed by theoretical and experimental studies. SUM-1(Zr) can be readily made into large (∼100 µm) single crystals and nanoplates (∼50 nm), constituting a versatile MOF platform.