Crystal structures and Full Interaction Maps of proton transfer coordination compounds, templated via Schiff base hydrolysis in situ

The used synthetic procedures was able to control delivery of amine (to generate in situ protonated amine), to prepare coordination compounds with different compositions. The anionic coordination compounds {(H(2)en)[Zn-3(2,5-pdc)(4)(H2O)(4)]center dot 2H(2)O}(n) - 1, (H(2)en)(2)[Mn(2,5-pdc)(3)]center dot 2H(2)O - 2a, (H(2)en)[Mn(2,5-pdc)(2)(H2O)(2)]center dot 3H(2)O-2b, (H(2)en)(2)[Cu-2(2,5-pdc)(2)(mu-2,5-pdc)(2)]center dot 8H(2)O - 3, {[Cu(en)(2)(H2O)]center dot[Cu-3(2,5-pdc)(2)(mu-2,5-pdc)(2)(en)(2)(H2O)(2)]center dot 3H(2)O} - 4a, (H(2)en)[Cu(2,5-pdc)(2)(H2O)]center dot H2O - 4b are co-crystallized with ethylenediammonium, via imine hydrolysis; where 2,5-pdc = 2,5-pyridinedicarboxylate and H(2)en = ethylenediammonium. We are reporting the first crystal structure of a binary coordination complex involving the 2,5-pdc ligand and Mn2+ metal center with 1:3 stoichiometry (2a). The crystal stability and supramolecular analysis of the proton transfer compounds using Full Interaction Maps for coordination compounds is relatively novel and contributed to study the chemical propensity in the increase of dimensionality from binary and ternary discrete metalloligands. The supramolecular arrangements involves significative hydrogen bonds between coordination complexes and ethylenediammonium cation. The synthetic pathway adopted provide metalloligands open bind sites, potential to be employed in the rational design of to prepare multi-metal coordination compounds (homo or hetero). (C) 2020 Elsevier Ltd. All rights reserved.