2022
DOI: 10.1002/asia.202200275
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Chirality Induction in a Hydrophilic Metallohelicate

Abstract: The title compound is a water‐soluble triply stranded metallohelicate 1Fe composed of TEG‐chain‐installed calix[4]arene‐based bis‐bidentate ligands and Fe3+ cations. This compound can incorporate up to two molecules of small chiral cations (G1 and G2). Interestingly, G1 shows positive cooperativity for host‐guest complexation, whereas G2 exhibits noncooperativity, despite having a greater affinity for 1Fe than G1. Density functional theory (DFT) calculations indicate the metallohelicate cavity expands upon enc… Show more

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Cited by 3 publications
(3 citation statements)
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“…The change in the ICD signals of 1Cu – 3Cu was observed in four distinct solvents, THF, THF+acetonitrile (95 : 5, v/v), chloroform, and chloroform+acetonitrile (95 : 5, v/v), at room temperature (25 °C) (Figure 2a–c). The rate of helicity inversion ( k inversion ) was found to be influenced by contaminants in chloroform, [32] and chloroform was treated with alumina before use. k inversion can be calculated by Equation (1) as follows: eeteet=0=exp-2knormalinormalnnormalvnormalenormalrnormalsnormalinormalonormalnt+C $\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr {{{ee}_{t}}\over{{ee}_{t=0}}}={\rm exp}\left(-2{k}_{{\rm i}{\rm n}{\rm v}{\rm e}{\rm r}{\rm s}{\rm i}{\rm o}{\rm n}}t+C\right)\hfill\cr}}$ …”
Section: Resultsmentioning
confidence: 99%
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“…The change in the ICD signals of 1Cu – 3Cu was observed in four distinct solvents, THF, THF+acetonitrile (95 : 5, v/v), chloroform, and chloroform+acetonitrile (95 : 5, v/v), at room temperature (25 °C) (Figure 2a–c). The rate of helicity inversion ( k inversion ) was found to be influenced by contaminants in chloroform, [32] and chloroform was treated with alumina before use. k inversion can be calculated by Equation (1) as follows: eeteet=0=exp-2knormalinormalnnormalvnormalenormalrnormalsnormalinormalonormalnt+C $\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr {{{ee}_{t}}\over{{ee}_{t=0}}}={\rm exp}\left(-2{k}_{{\rm i}{\rm n}{\rm v}{\rm e}{\rm r}{\rm s}{\rm i}{\rm o}{\rm n}}t+C\right)\hfill\cr}}$ …”
Section: Resultsmentioning
confidence: 99%
“…[36] The change in the ICD signals of 1Cu-3Cu was observed in four distinct solvents, THF, THF + acetonitrile (95 : 5, v/v), chloroform, and chloroform + acetonitrile (95 : 5, v/v), at room temperature (25 °C) (Figure 2a-c). The rate of helicity inversion (k inversion ) was found to be influenced by contaminants in chloroform, [32] and chloroform was treated with alumina before use. k inversion can be calculated by Equation (1) as follows:…”
Section: Resultsmentioning
confidence: 99%
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