SEARCH

SEARCH BY CITATION

Keywords:

  • Nicotinic acid;
  • Isonicotinic acid;
  • 4d-4f systems;
  • Crystal structures;
  • Heterometallic coordination polymers

Abstract

Two new 4d-4f coordination polymers, [Ag2Nd(nic)4(H2O)4·(ClO4)·H2O] (1) and [Ag8Yb4(inic)8(ox)6]· [Ag2(inic)2] (2) [nic = nicotinate, inic = isonicotinate and ox = oxalate] have been synthesized and characterized by element analysis, IR spectroscopy and thermal analysis, as well as single crystal X-ray diffraction. Complex 1 exhibits a wavelike layer that is assembled from neodymium-carboxylate subunits, silver centres and perchlorate ions. Complex 2 represents a extended heterometallic sandwich-like layered network that is constructed from ytterbium-oxalate layers and Ag(inic) chains.