Syntheses of 6,6'-bis(1-H-benzirnidazol-2-yl)-4,4'-bis(methoxycarbonyl)-2,2
'-bipyridine and a series of new quaterpyridines as functionalized tetraden
tate ligands is described. A molecular engineering was developed allowing d
ifferent solubilities, pi -systems or grafting modes. (C) 2001 Elsevier Sci
ence Ltd. All rights reserved.