Ruthenium(II) Metalla2catenanes and Macrocycles via Donor-Dependent Self-Assembly

Siddiqui, MM and Saha, R and Mukherjee, PS (2019) Ruthenium(II) Metalla2catenanes and Macrocycles via Donor-Dependent Self-Assembly. In: Inorganic Chemistry, 58 (7). pp. 4491-4499.

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Abstract

Donor-selective coordination-driven self-assembly of a bis(dipyrrin)-bridged new diruthenium acceptor (RuA) with dipyridyl and diimidazolyl donors has been reported. The self-assembly of the ruthenium(II) acceptor with imidazolyl donors resulted in the formation of either 2 + 2 self-assembled monomeric macrocycles (MMs) or a mixture of metalla2catenanes (MCs) and MMs depending on the solvents used. On the contrary, similar self-assembly with the pyridyl donors resulted in simple 2 + 2 macrocycles (MMs) exclusively, irrespective of the solvents used. The new ruthenium acceptor and self-assembled macrocycles were systematically characterized by multinuclear NMR and electrospray ionization mass spectrometry study. The structure of one of the metalla2catenanes (MC1) was further confirmed by single-crystal X-ray diffraction studies. Density functional theory calculations inferred that the interlocked structures with imidazolyl donors are stabilized by �-� interactions between the benzene rings, while such interactions cease to exist with the pyridyl linkers, leading to the formation of noninterlocked macrocycles. © 2019 American Chemical Society.

Item Type:	Journal Article
Publication:	Inorganic Chemistry
Publisher:	AMER CHEMICAL SOC
Additional Information:	Copyright for this article belongs to AMER CHEMICAL SOC
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	06 May 2019 17:23
Last Modified:	06 May 2019 17:23
URI:	http://eprints.iisc.ac.in/id/eprint/62213

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