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Ruthenium(II) Metalla2]catenanes and Macrocycles via Donor-Dependent Self-Assembly

Siddiqui, MujahuddinM and Saha, Rupak and Mukherjee, Partha Sarathi (2019) Ruthenium(II) Metalla2]catenanes and Macrocycles via Donor-Dependent Self-Assembly. In: INORGANIC CHEMISTRY, 58 (7). pp. 4491-4499.

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Official URL: http://dx.doi.org/10.1021/acs.inorgchem.9b00019

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 metalla2]catenanes (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 metalla2]catenanes (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 pi-pi interactions between the benzene rings, while such interactions cease to exist with the pyridyl linkers, leading to the formation of noninterlocked macrocycles.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to AMER CHEMICAL SOC
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Depositing User: Id for Latest eprints
Date Deposited: 13 May 2019 12:44
Last Modified: 13 May 2019 12:44
URI: http://eprints.iisc.ac.in/id/eprint/62327

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