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α‐ and β‐[Fe 2 (μ‐S t Bu) 2 (S t Bu) 4 ] 2− : Coexistence of Two Bond‐Stretch Isomers of a Classical Bitetrahedral Metal Chalcogenolate Compound
Author(s) -
Hammann Bernd,
Chen Changneng,
Flörke Ulrich,
Hauptmann Ralf,
Bill Eckhard,
Sinnecker Sebastian,
Henkel Gerald
Publication year - 2006
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200601115
Subject(s) - metal , sulfur , crystallography , stereochemistry , biology , chemistry , organic chemistry
Two of a kind : [Fe 2 (S t Bu) 6 ] 2− shows a new form of isomerism. Besides the isomer of classical structure 1 a (red Fe, yellow S) there is also a variant ( 1 b ) in which the central Fe 2 S 2 rhomb is inverted and the FeS bonds are distinctly shorter. 1 b can be regarded as a transition state during the inversion of the bridging sulfur atoms of 1 a that is stabilized by significant π interactions.

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