名称:
Diverse polymeric metal complexes formed by the ambidentate ligand 1-(4′-pyridyl)pyridin-4-one
摘要:
The preparations are reported of a range of metal complexes of the 'extended reach' ambidentate ligand 1-(4'-pyridyl)pyridin-4-one (pypd). four of which have been shown by X-ray studies to have polymeric network structures. The compound [Cu(pypd)(2)(H2O)(4)](NO3)(2).4H(2)O (1) forms sheets comprising [Cu(pypd)(2)(H2O)(4)] units linked by a complex set of hydrogen bonds. Crystals of stoichiometry Co(pypd)(2)(NCS)(2).MeOH.H2O (2) contain a 1:1 co-crystallisation of [Co(pypd)(2)(H2O)(2)(NCS)(2)] and [Co(pypd)(2)(MeOH)(2)(NCS)(2)] each forming hydrogen bonded chains. which are linked into sheets by further hydrogen bonds. A combination of hydrogen bonding and pi-pi stacking between pyridyl and pyridone rings in Nd(pypd)(2)(H2O)(2)(NO3)(3) (3) also generates a sheet structure. The compound [Cd(pypd)(3)](ClO4)(2).3H(2)O (4) forms a complex 3D network. (C) 2002 Elsevier Science B.V. All rights reserved.
DOI:
10.1016/s0020-1693(02)01473-1