Abstract
The structure of dipyridiniomethane cis-dichlorotetrafluoroosmate(IV) {or N,N-methylenedipyridinium dichlorotetrafluoroosmate(IV), cis-[(C 5 H 5 N) 2 CH 2 ][OsF 4 Cl 2 ]}, has been determined by single-crystal X-ray diffraction at room temperature. The complex anions are completely ordered in the lattice. As a result of the trans influence in the two asymmetric axes Cl-Os-F, the Os-F distances of 1.941 (4) and 1.953 (5) A are slightly lengthened compared to those of the symmetric F-Os-F axis of 1.931 (5) and 1.934 (4) A. Correspondingly, the Os-Cl distances of 2.324 (2) and 2.335 (2) A are shortened in comparison with those of 2.364 A in the octahedral complex anion of K 2 [OsCl 6 ]
Published Version
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