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Dinuclear metal complexes of Cd(II), Zn(II) and Fe(II) with triple-helical structure and predetermined chirality
|Published in||Inorganica Chimica Acta. 1998, vol. 271, no. 1/2, p. 36-39|
|Abstract||The complex formation of members of the so-called chiragen ligand family (stereoselective linked bis-[4,5]-pineno-2,2'-bipyridines) with Cd(II), Zn(II) and Fe(II) was investigated. Using spectrophotometric titrations and electrospray MS it was determined that the major species formed in solution are complexes with an M:L=2:3 stoichiometry. Based on circular dichroism (CD) and NMR measurements, a triple-helical structure with enantiomerically pure homochiral configuration at the metal centers is proposed for these dinuclear complexes. This is one of the first examples of a spontaneous self-assembly process leading to a dinuclear triple-helicate with pronouced preference for the formation of one of the possible stereoisomers.|
|Keywords||Helicate complexes — Self-assembly — Cadmium complexes — Zinc complexes — Iron complexes|
|MÜRNER, Hansruedi, VON ZELEWSKY, Alex, HOPFGARTNER, Gerard. Dinuclear metal complexes of Cd(II), Zn(II) and Fe(II) with triple-helical structure and predetermined chirality. In: Inorganica Chimica Acta, 1998, vol. 271, n° 1/2, p. 36-39. https://archive-ouverte.unige.ch/unige:2317|