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Chirality Control of Quadruple Helixes of Metal Strings by Peripheral Chiral Ligands
Author(s) -
Yu ChungHan,
Kuo MinShiang,
Chuang ChingYi,
Lee GeneHsiang,
Hua ShaoAn,
Jin BihYaw,
Peng ShieMing
Publication year - 2014
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201402823
Subject(s) - chirality (physics) , metal , ligand (biochemistry) , crystallography , stereochemistry , materials science , chemistry , physics , receptor , chiral symmetry , metallurgy , biochemistry , quantum mechanics , nambu–jona lasinio model , quark
Chirality control of helixes with the Δ (P) or Λ (M) form is interesting in various fields such as extended metal atom chains (EMACs), in which the metal backbones are helically wrapped by four ligands. Herein, we report two EMACs, Δ‐[Ni 5 ((−)camnpda) 4 ] and Λ‐[Ni 5 ((+)camnpda) 4 ], whose chiralities are controlled by chiral ligands with naphthyridine and camphorsulfonyl groups. There is a large energy difference (108 kcal mol −1 ) between the two helical structures with one chiral ligand. Furthermore, the electron communication between [Ni 2 ] 3+ units is more pronounced than in [Ni 5 (bna) 4 Cl 2 ] 2+ (bna=binaphthyridylamido). The results demonstrate control of small‐scale helical structure and set the stage for future development of chiral controlled base and nanoelectronic devices.