Premium
Synthesis and Properties of New Mixed‐Halide Derivatives of Iron‐Sulfide Dimers‐Crystal Structure of (Et 4 N) 2 [Fe 2 S 2 Cl 2 Br 2 ]
Author(s) -
To Corinne,
Iernoa Helene,
Jordanov Jeanne,
Laugier Jean,
Greneche JeanMarc
Publication year - 1997
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19971300216
Subject(s) - chemistry , halide , bromide , steric effects , crystallography , crystal structure , sulfide , cyclic voltammetry , single crystal , inorganic chemistry , stereochemistry , electrochemistry , organic chemistry , electrode
The synthesis and characterization of the new mixed‐halide clusters (Et 4 N) 2 [Fe 2 S 2 Cl 4 ‐ n Br n ] ( n =2, 3), together with an improved synthesis of (Et 4 N) 2 [Fe 2 S 2 Br 4 ] and the crystal and molecular structure of (Et 4 N) 2 [F 2 S 2 Cl 2 Br 2 ], are reported here. The structure consists of [Fe 2 S 2 Cl 2 Br 2 ] dianions, with a pseudo‐tetrahedral symmetry around each iron atom. A disorder problem precludes precise identification of the locations of the chloride and bromide ligands. A syn (or anti ) conformation is however considered to be most likely, for steric hindrance reasons and on the basis of Mössbauer data. The Mössbauer, magnetic susceptibility, cyclic voltammetry and UV/Vis properties of the new clusters remain similar to those of the parent single‐type halide clusters. These new clusters are interesting precursors for complexes with mixed thiolate and non‐thiolate coordination at the iron sites.