名称:
Synthesis and structural characterisation of four saccharinate – Metal complexes with 2,2′:6,2″-terpyridine (terpy) as a co-ligand
摘要:
Four saccharinate complexes of divalent transition metals with 2,2': 6,2"-terpyridine (terpy) as a co-ligand have been synthesised, and characterised by elemental analysis and single crystal X-ray diffraction at low temperature. The complexes [M( terpy)( sac)( H2O) 2] sac H2O (1, M = Mn; 2, M = Co; 3, M = Ni) are isostructural, crystallising in space group Pbca. The metal ions have approximately octahedral coordination, with the two coordinated water molecules occupying cis-positions. These water molecules are hydrogen-bonded to the oxygen atom in the free water molecule. The copper(II) ion in the anhydrous complex [Cu( terpy)( sac)(2) ] 4 is five-coordinate; the compound crystallises in the space group P2(1)/c. (c) 2007 Elsevier B. V. All rights reserved.