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Cs[Cl3 F10 ]: A Propeller-Shaped [Cl3 F10 ]- Anion in a Peculiar A[5] B[5] Structure Type.

ABSTRACT: Reaction of CsF with ClF3 leads to Cs[Cl3 F10 ]. It contains a molecular, propeller-shaped [Cl3 F10 ]- anion with a central ?3 -F atom and three T-shaped ClF3 molecules coordinated to it. This anion represents the first example of a heteropolyhalide anion of higher ClF3 content than [ClF4 ]- and is the first Cl-containing interhalogen species with a ?-bridging F atom. The chemical bonds to the central ?3 -F atom are highly ionic and quite weak as the bond lengths within the coordinating XF3 units (X = Cl, and also calculated for Br, I) are almost unchanged in comparison to free XF3 molecules. Cs[Cl3 F10 ] crystallizes in a very rarely observed A[5] B[5] structure type, where cations and anions are each pseudohexagonally close packed, and reside, each with coordination number five, in the trigonal bipyramidal voids of the other.

SUBMITTER: Scheibe B

PROVIDER: S-EPMC7589245 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Cs[Cl3 F10 ]: A Propeller-Shaped [Cl3 F10 ]- Anion in a Peculiar A[5] B[5] Structure Type.

Scheibe Benjamin B Karttunen Antti J AJ Müller Ulrich U Kraus Florian F

Angewandte Chemie (International ed. in English) 20200817 41

Reaction of CsF with ClF3 leads to Cs[Cl3 F10 ]. It contains a molecular, propeller-shaped [Cl3 F10 ]- anion with a central μ3 -F atom and three T-shaped ClF3 molecules coordinated to it. This anion represents the first example of a heteropolyhalide anion of higher ClF3 content than [ClF4 ]- and is the first Cl-containing interhalogen species with a μ-bridging F atom. The chem ...[more]

PMID: 32608053

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