摘要:
This paper reports three new holmium 2-fluorobenzoato (2-FBA) complexes with 1,10-phenanthroline (phen), 2,2'-bipydine (2,2'-bpy) and 4,4'-bipyridine, respectively. A rare and interesting structural feature of holmium 2-FBA complex containing phen is two non-equivalent binuclear molecules existed in an asymmetric unit, namely, [Ho(2-FBA)(3)center dot phen center dot CH3CH2OH](2) and [Ho(2-FBA)(3)center dot phen](2). The dimeric complex [Ho(2-FBA)(3)center dot 2,2-bpy](2) is a type of eight-coordinated lanthanide carboxylate complexes containing 2,2-bpy. The {[Ho(2-FBA)(3)center dot 2H(2)O]center dot(4,4'-bpy)}(n) is in one-dimensional polymeric structure, and the 3D supramolecular network structure is formed by the hydrogen bonds and pi-pi stacking interactions. (c) 2005 Elsevier B.V. All rights reserved.