Synthesis, vibrational spectroscopy and crystal structure of polymer connecting zinc and sodium with the flexible polycarboxylate ligand tricarballylate anion (TCA3-)

P. A. M. W ILLIAMS; L. NASO; GUSTAVO ETCHEVERRÍA; E. G. FERRER

JOURNAL OF MOLECULAR STRUCTURE

ELSEVIER SCIENCE BV

Año: 2010 vol. 978 p. 124 - 130

0022-2860

A new 3D coordination polymer of general formula [NaZn(C6H5O6)(H2O)3]n has been hydrothermally synthesized and characterized by vibrational spectroscopy (Raman and Infrared), X-ray diffraction and thermal analysis. The compound crystallizes in the centrosymmetric monoclinic group C2/c with a = 10.885(2), b = 13.219(3), c = 5.299(5) Å, b = 102.23(2) , V = 2151(1) (Å), Z = 8. The crystal structure consists in an open framework where the arrangement of tetrahedral zinc and octahedral sodium cations, coordinated by water and carboxylate oxygens atoms, are linked by tricarballylate anions developing channels parallel to the [0 1-1] crystallographic direction. Thermogravimetric analysis indicates that the complex is thermally stable up to 200 0C.