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Coordination of KrF 2 to a Naked Metal Cation, Mg 2
Examples of coordination compounds in which KrF 2 functions as a ligand are very rare. In contrast, XeF 2 provides a rich coordination chemistry with a variety of main‐group and transition metal cations. The reactions of Mg(AsF 6 ) 2 and KrF 2 in HF or BrF 5 solvent have afforded [Mg(KrF 2 ) 4 (AsF...
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| Published in: | Angewandte Chemie 2017-05, Vol.129 (22), p.6347-6350 |
|---|---|
| Main Authors: | , , , , |
| Format: | Article |
| Language: | English |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
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| Summary: | Examples of coordination compounds in which KrF
2
functions as a ligand are very rare. In contrast, XeF
2
provides a rich coordination chemistry with a variety of main‐group and transition metal cations. The reactions of Mg(AsF
6
)
2
and KrF
2
in HF or BrF
5
solvent have afforded [Mg(KrF
2
)
4
(AsF
6
)
2
] and [Mg(KrF
2
)
4
(AsF
6
)
2
]⋅2 BrF
5
, respectively, the first examples of a metal cation ligated by KrF
2
. Their X‐ray crystal structures and Raman spectra show that the KrF
2
ligands and [AsF
6
]
−
anions are F‐coordinated to a naked Mg
2+
cation. Quantum‐chemical calculations are consistent with essentially non‐covalent ligand‐metal bonding. These compounds significantly extend the XeF
2
–KrF
2
analogy and the limited chemistry of krypton by introducing a new class of coordination compound in which KrF
2
functions as a ligand towards a naked metal cation. |
|---|---|
| ISSN: | 0044-8249 1521-3757 |
| DOI: | 10.1002/ange.201611534 |