Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume -, Issue 14, Pages 2492-2497Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201300286
Keywords
Supramolecular chemistry; Self-assembly; Metallacycles; Macrocycles; Constitutional isomers
Categories
Funding
- National Science Foundation (NSF) [DMR-0705015, CHE-1151991, DMR-0821313, CHE-1012636]
- Ohio Board of Regents
- Direct For Mathematical & Physical Scien [1012636, 1151991] Funding Source: National Science Foundation
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We report the self-assembly and isolation of two metallamacromolecular constitutional isomeric pairs based on < tpy-MII-tpy > connectivity. Utilizing a robust < tpy-RuII-tpy > dimer with varying substitution to the core benzene ring resulted not only in the isolation of the expected 60 degrees-oriented tetramer and 120 degrees-oriented hexamer but also in the unexpected isolation of a 60 degrees-oriented hexamer and a 120 degrees-oriented tetramer. These isomers were characterized by 1H NMR spectroscopy and mass spectrometry (ESI-travelling wave ion mobility), which revealed significant structural differences. Molecular modeling was utilized to aid in characterization.
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