Bifurcated Halogen Bonding Involving Diaryliodonium Cations as Iodine(III)-Based Double-[sigma]-Hole Donors
| Parent link: | Crystal Growth & Design Vol. 21, iss. 2.— 2021.— [Р. 1136-1147] |
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| Corporate Author: | |
| Other Authors: | , , , , , , |
| Summary: | Title screen Three diaryliodonium tetrachloroaurates(III), [Ar1IAr2][AuCl4] (Ar1/Ar2=Ph/Ph (1), Ph/Mes (2), o-(C6H4)2 (3)), were obtained as solids (62-80%) by the metathetical reaction of [Ar1IAr2](CF3CO2) and H[AuCl4]. In particular, the single-crystal X-ray diffraction studies of 1-3 revealed three-center bifurcated C-I···(Cl-Au-Cl) halogen bond (XB) and the more conventional interionic two-center C-I···Cl-Au XB. An XB with the iodine(III) center of a diaryliodonium cation can be formed even when (C-I···X) is much less than 180° (decrease by 55° in our experiments). A Cambridge Structural Database search and processing revealed other examples of bifurcated XBs involving diaryliodonium species. All recognized bifurcated XBs with diaryliodonium cations were classified and divided into two categories: “bifurcated plus two-center” and “double-bifurcated” structural types. The nature and energies of the XB interactions were studied by density functional theory (DFT) calculations and a topological analysis of the electron density distribution in the framework of the quantum theory of atoms in molecules (QTAIM) at the [omega]B97XD/DZP-DKH level of theory. The nature of all XB contacts is purely noncovalent, and the total energy of bifurcated XBs is generally ca. 50% higher than the energy of two-center XBs. |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://doi.org/10.1021/acs.cgd.0c01463 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666337 |
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| 200 | 1 | |a Bifurcated Halogen Bonding Involving Diaryliodonium Cations as Iodine(III)-Based Double-[sigma]-Hole Donors |f I. S. Aliyarova, D. M. Ivanov, N. S. Soldatova [et al.] | |
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| 320 | |a [References: 16 tit.] | ||
| 330 | |a Three diaryliodonium tetrachloroaurates(III), [Ar1IAr2][AuCl4] (Ar1/Ar2=Ph/Ph (1), Ph/Mes (2), o-(C6H4)2 (3)), were obtained as solids (62-80%) by the metathetical reaction of [Ar1IAr2](CF3CO2) and H[AuCl4]. In particular, the single-crystal X-ray diffraction studies of 1-3 revealed three-center bifurcated C-I···(Cl-Au-Cl) halogen bond (XB) and the more conventional interionic two-center C-I···Cl-Au XB. An XB with the iodine(III) center of a diaryliodonium cation can be formed even when (C-I···X) is much less than 180° (decrease by 55° in our experiments). A Cambridge Structural Database search and processing revealed other examples of bifurcated XBs involving diaryliodonium species. All recognized bifurcated XBs with diaryliodonium cations were classified and divided into two categories: “bifurcated plus two-center” and “double-bifurcated” structural types. The nature and energies of the XB interactions were studied by density functional theory (DFT) calculations and a topological analysis of the electron density distribution in the framework of the quantum theory of atoms in molecules (QTAIM) at the [omega]B97XD/DZP-DKH level of theory. The nature of all XB contacts is purely noncovalent, and the total energy of bifurcated XBs is generally ca. 50% higher than the energy of two-center XBs. | ||
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| 461 | |t Crystal Growth & Design | ||
| 463 | |t Vol. 21, iss. 2 |v [Р. 1136-1147] |d 2021 | ||
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