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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 28, Number 11
BKCSDE 28(11)
November 20, 2007 

 
Title
Solvent Effect on the Nature of the Metallamacrocycles Formed: Formation of Octanuclear and Dodecanuclear Manganese Metalladiazamacrocycles
Author
Rohith P. John, Kyungjin Lee, Kyungjae Lee, Mira Park, Myoung Soo Lah*
Keywords
Self-assembly, Molecular polygon, Octanuclear metallamacrocycle, Dodecanuclear metallamacrocycle, Solvent effect
Abstract
Depending on the choice of coordinating solvent molecules, the size and nuclearity of metallamacrocycles formed could be controlled. When a manganese ion was assembled with a pentadentate ligand, N-trans- (pentenoyl)salicylhydrazide in amide solvents such as dimethylformamide (DMF) or dimethylacetamide (DMA), an S6 symmetry puckered dodecanuclear metalladiazamacrocycle with a ···(ΛΛΔΔ)(ΛΛΔΔ)··· chiral sequence was obtained. However, in an alcoholic solvent such as methanol or ethanol while keeping the other conditions the same, an S8 symmetry octanuclear metalladiazamacrocycle with a ···(ΛΔ)(ΛΔ)··· chiral sequence was obtained.
Page
2009 - 2014
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