Pyrazine-based donor tectons: synthesis, self-assembly and characterization. Issue 11 (22nd January 2016)

• Record Type: Journal Article
• Authors: Bhowmick, Sourav; Chakraborty, Sourav; Marri, Subba R.; Behera, J. N.; Das, Neeladri
• Is Part Of: RSC advances. Volume 6:Issue 11(2016)
• Page Start: 8992
• Page End: 9001
• Publication Date: 2016-01-22
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra21484j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Two donor tectons, each bearing a central pyrazine moiety covalently linked to two pyridine units, have been self-assembled with PtII2 acceptor units to yield ionic nanoscalar metallamacrocycles, having a convex hexagonal cavity. Abstract : Two new supramolecular building blocks derived from pyrazine are introduced. These molecules, having pendant pyridine units covalently linked to central pyrazine ring, are structurally rigid with pre-defined bite angles. Therefore they can act as donor tectons in design of supramolecular hexagons using coordination driven self-assembly protocol. Multinuclear NMR (including 1 H DOSY) and mass spectrometry have been utilized to confirm the purity and stoichiometry of these self assembled hexagonal ensembles. PM6 molecular modeling studies corroborate their hexagonal shape and nanoscalar dimensions.