We report the synthesis and characterization of {a new|a brand new} series of permanently porous, three-dimensional metal-organic frameworks (MOFs), M-HAF-2 (M= Fe, Ga or In), constructed from tetratopic, hydroxamate-based, chelating linkers. The structure of M-HAF-2 was determined by three-dimensional electron diffraction (3DED), revealing a {unique|distinctive|special|exclusive|exceptional|one of a kind} interpenetrated hcb-a net topology. This {unusual|uncommon} topology is enabled by the presence of {free|totally free|free of charge|cost-free|absolutely free|no cost} hydroxamate groups, which {lead to|result in|bring about|cause} the formation of a diverse network of cooperative interactions comprising single metal-hydroxamate nodes, staggered π–π interactions {between|in between|among|amongst|involving} linkers and H-bonding interactions {between|in between|among|amongst|involving} metal-coordinated and {free|totally free|free of charge|cost-free|absolutely free|no cost} hydroxamate groups. Such {extensive|in depth|substantial|comprehensive}, multimodal interconnectivity is reminiscent {of the|from the|in the|on the|with the|of your} {complex|complicated} noncovalent interaction networks of proteins and endows M-HAF-2 frameworks with {good|great|excellent|very good|fantastic|superior} thermal and exceptionally {high|higher} chemical stability and {allows|enables|permits|makes it possible for} them to readily undergo post-synthetic metal exchange (PSE). We demonstrate that M-HAF-2 can serve as versatile porous {materials|supplies|components} for ionic separations, {likely|most likely|probably} aided by one-dimensional channels lined by {continuously|constantly} π-stacked aromatic groups and H-bonding hydroxamate functionalities. As {a new|a brand new} addition {to the|towards the|for the} {small|little|tiny|modest|smaller|compact} group of hydroxamate-based MOFs, M-HAF-2 represents a structural merger {between|in between|among|amongst|involving} MOFs and hydrogen-bonded organic frameworks (HOFs). 16-Aminohexadecanoic acid site Buy1785259-87-1 PMID:24190482
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