Περίληψη:
The use of 4,4’-[oxalylbis(azanediyl)]bis(2-hydroxybenzoic acid)
(H6L1) in the Ba2+ chemistry has afforded a 3D polymer, namely
[Ba(H2L2)(H2O)](n) (1), which is based on H2L22- anions derived by the
in-situ metal-assisted transformation of H6L1. The neutral H4L2
[4-(carboxyformamido)-2-hydroxybenzoic acid] ligand was isolated from
1 and characterized by spectroscopic methods. Polymer 1 is based on edge
and facesharing BaO10 polyhedra which create an inorganic layer pillared
to the third dimension by the organic ligands and has been classified as
an (IO1)-O-2 framework. The topological analysis of 1 provided an
opportunity to introduce a method for the deconstruction of (IO1)-O-2
frameworks by adopting principles applied in the deconstruction of
Metal-Organic-Frameworks (MOFs) with rod Secondary Building Units
(SBUs). A detailed discussion and insights for the proper use of the
(IOn)-O-m notation which finds application in describing the
dimensionality in MOFs, is also provided.
