Steric Control of a Bridging Ligand for High-Nuclearity Metallamacrocycle Formation:  A Highly Puckered 60-Membered Icosanuclear Metalladiazamacrocycle

A novel S 4-symmetric icosanuclear manganese metalladiazamacrocycle was synthesized using a pentadentate ligand, N-3-phenyl-trans-2-propenoylsalicylhydrazide (H3L), that has a rigid and bulky terminal N-acyl group. A 20 cyclic repeat of an −(Mn−N−N)− linkage resulted in a highly puckered diaza-bridg...

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Bibliographic Details
Published in:Inorganic chemistry 2006-10, Vol.45 (20), p.7991-7993
Main Authors: Moon, Dohyun, Lee, Kyungjae, John, Rohith P, Kim, Ghyung Hwa, Suh, Byoung Jin, Lah, Myoung Soo
Format: Article
Language:English
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Summary:A novel S 4-symmetric icosanuclear manganese metalladiazamacrocycle was synthesized using a pentadentate ligand, N-3-phenyl-trans-2-propenoylsalicylhydrazide (H3L), that has a rigid and bulky terminal N-acyl group. A 20 cyclic repeat of an −(Mn−N−N)− linkage resulted in a highly puckered diaza-bridged 60-membered icosanuclear metallamacrocycle. The steric interaction between the ligands in the cyclic system leads to five consecutive MnIII centers in a chemically different −(MnAMnBMnCMnDMnE)− environment, with the chiralities of the metal centers being in a rather complicated −(ΛΛΔΛΛ)(ΔΔΛΔΔ)− sequence.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic060646d