The crystallisation of 5-hydroxyisophthalic acid with divalent Mn or with Mn or Zn and either 2,2-bipyridine (2,2-bipy) or pyridine-2-(1H-pyrazol-3-yl) gave solids of composition [Mn(C8H4O5)(H2O)(3)]. 2H(2)O (1), [Mn(C8H4O5)(2,2 ' -bipy)].H2O (2), [Mn-2(C8H4O5)(2)(C8H7N3)(2)].H2O (3) and [Zn(C8H4O5)(2,2 ' -bipy)] (4). Each compound has 1D co-ordinative chains that are connected by hydrogen bonds. Compounds 2-4 contain M2C2O4 rings with pseudo-chair geometries. The Mn atoms in 2 are coupled antiferromagnetically. (C) 2001 Elsevier Science Ltd. All rights reserved.
- co-ordination polymer
- X-RAY STRUCTURE