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[SnI8 {Fe(CO)4 }4 ]2+ : Highly Coordinated Sn+II I8 Subunit with Fragile Carbonyl Clips.


ABSTRACT: [SnI8 {Fe(CO)4 }4 ][Al2 Cl7 ]2 contains the [SnI8 {Fe(CO)4 }4 ]2+ cation with an unprecedented highly coordinated, bicapped SnI8 prism. Given the eightfold coordination with the most voluminous stable halide, it is all the more surprising that this SnI8 arrangement is surrounded only by fragile Fe(CO)4 groups in a clip-like fashion. Inspite of a predominantly ionic bonding situation in [SnI8 {Fe(CO)4 }4 ]2+ , the I- ???I- distances are considerably shortened (down to 371?pm) and significantly less than the van der Waals distance (420?pm). The title compound is characterized by single-crystal structure analysis, spectroscopic methods (EDXS, FTIR, Raman, UV/Vis, Mössbauer), thermogravimetry, and density functional theory methods.

SUBMITTER: Wolf S 

PROVIDER: S-EPMC7154766 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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[SnI<sub>8</sub> {Fe(CO)<sub>4</sub> }<sub>4</sub> ]<sup>2+</sup> : Highly Coordinated Sn<sup>+II</sup> I<sub>8</sub> Subunit with Fragile Carbonyl Clips.

Wolf Silke S   Köppe Ralf R   Block Theresa T   Pöttgen Rainer R   Roesky Peter W PW   Feldmann Claus C  

Angewandte Chemie (International ed. in English) 20200123 14


[SnI<sub>8</sub> {Fe(CO)<sub>4</sub> }<sub>4</sub> ][Al<sub>2</sub> Cl<sub>7</sub> ]<sub>2</sub> contains the [SnI<sub>8</sub> {Fe(CO)<sub>4</sub> }<sub>4</sub> ]<sup>2+</sup> cation with an unprecedented highly coordinated, bicapped SnI<sub>8</sub> prism. Given the eightfold coordination with the most voluminous stable halide, it is all the more surprising that this SnI<sub>8</sub> arrangement is surrounded only by fragile Fe(CO)<sub>4</sub> groups in a clip-like fashion. Inspite of a predomina  ...[more]

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