During the synthesis of an FeBr complex with the PNP ligand (,,,)-[Fe(CH)(CHNP)] (), single crystals of the di-chloro-methane monosolvate of the Br salt of the protonated ligand H were obtained serendipitously, [Fe(CH)(CHNP)]Br·CHCl. The crystal structure of H·Br·CHCl was determined by single-crystal X-ray diffraction. The mean bond lengths in the ferrocene units are Fe-C = 2.049 (3) Å and C-C = 1.422 (4) Å within the cyclo-penta-dienyl rings. The mean C-N bond length is 1.523 (4) Å. The inter-planar angle between the two connected cyclo-penta-dienyl rings is 49.2 (2)°. One ferrocene moiety adopts a staggered conformation, whereas the other is between staggered and eclipsed. The Br ions and the CHCl mol-ecules are located in channels extending along <100>. One ammonium H atom forms a hydrogen bond with the Br ion [H⋯Br = 2.32 (4) Å and C-H⋯Br = 172 (3)°]. The second ammonium H atom is not involved in hydrogen bonding.
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| http://dx.doi.org/10.1107/S2056989016020417 | DOI Listing |
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