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Royal Society of Chemistry, RSC Advances, 28(4), p. 14513

DOI: 10.1039/c4ra00849a

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Acid-induced formation of hydrogen-bonded double helix based on chiral polyphenyl-bridged bis(2,2′-bipyridine) ligands

Journal article published in 2014 by Kiu-Chor Sham, Chi-Chung Yee, Yi Pan, Kai-Chung Lau ORCID, Shek-Man Yiu, Hoi-Lun Kwong
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Chiral polyphenyl-bridged bis(2,2′-bipyridine) ligands L2–4 give intense CD signals when protonated with tetrachloroferric acid or perchloric acid. X-ray crystal structure of [(L2)2H2](FeCl4)2 shows that a double-stranded helix stabilized by both interior and exterior hydrogen bonding is formed. Theoretical DFT calculations show that such stabilization exists in solution.