Abstract
This work reports the ambient temperature synthesis and structural characterization of six new first row transition metal acetylenedicarboxylate coordination polymers. The Co and two Ni compounds adopt structures in which the octahedral metals are connected into 1D chains via the acetylenedicarboxylate ligand. In contrast the Mn and two Zn compounds adopt 3D metal‐organic frameworks; while the Mn compound is non‐porous the two Zn structures contain dimeric or trimeric clusters connected into frameworks that are potentially porous. These two anionic metal‐organic frameworks are, however, charged balanced by cations siting in their pores which greatly reduces the ability to access their porosity.
Highlights
Metal-organic frameworks (MOFs) are structures comprised of inorganic nodes connected via organic linkers to form two or three dimensional structures, which are often potentially porous debate remains on the essential nature of this.[1,2,3] As such they are a subcategory of coordination polymers incorporating organic ligands into higher dimensional structures
There are, a significant number of first row transition metal coordination polymers made using this ligand by ambient temperature reactions, most commonly in water.[20,21,22,23,24,25,26,27]
The two known first row transition metal MOFs incorporating only acetylenedicarboxylate organic linkers were made at ambient temperature.[10,11]
Summary
Metal-organic frameworks (MOFs) are structures comprised of inorganic nodes connected via organic linkers to form two or three dimensional structures, which are often potentially porous debate remains on the essential nature of this.[1,2,3] As such they are a subcategory of coordination polymers incorporating organic ligands into higher dimensional structures. The Ni cations in NiADC1 and NiADC2 have bond valence sums of 1.99 and 2.04, consistent with divalent cations.[29] Each of the carboxylate groups in the one unique ADC ligand in each structure coordinates to one cation through one of their oxygen atoms.
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