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Title

Dinuclear metal complexes of Cd(II), Zn(II) and Fe(II) with triple-helical structure and predetermined chirality

Authors
Mürner, Hansruedi
Von Zelewsky, Alex
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 complexesSelf-assemblyCadmium complexesZinc complexesIron complexes
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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

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Deposited on : 2009-08-04

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