From pink to blue and back to pink again: changing the Co(II) ligation in a two-dimensional coordination network upon desolvation

摘要

Heating of a pink two-dimensional Co(II) coordination network {[Co-2(mu(2)-OH2)(bdc)(2)(S-nia)(2)(H2O)(dmf)]center dot 2(dmf)center dot(H2O)}(n) (1) built from 1,4-benzenedicarboxylic acid (H(2)bdc) residues and thionicotinamide (S-nia) ligands initiates a single-crystal-to-single-crystal transition accompanied by removal of both coordinated and co-crystallized solvents. In the dry blue form, [Co(bdc)(S-nia)](n) (dry_1), the Co(II) centers changed from an octahedral to a square pyramidal configuration.