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. 2019 Jun 6;58(27):9012–9016. doi: 10.1002/anie.201904817

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© 2019 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Examples of [N−I−N]⁺ halogen bond forming systems. 1 and 2 have been previously studied12b, 12c, 15 and are included here for comparison, whereas 3 and 4 are first reported in this study.