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Three complexes of mercury(II) trifluoroacetate and 2,2'-bipyridyl, of different stoichiometry, have been investigated and their structures compared with the previously published structure of bis[(2,2'-bipyridylN,N')bis(trifluoroacetatoO)mercury(II)], [Hg(C2F3O2)2(C10H8N2)]2 (BHG). The complete series, AHG {(2,2'-bipyridylN,N')(trifluoroacetatoO)mercury(II) hemi[tetrakis(trifluoroacetatoO)mercury(II)], [Hg(C2F3O2)(C10H8N2)][Hg(C2F3O2)4]0.5}, BHG, GHG {bis(2,2'-bipyridylN,N')(trifluoroacetatoO)mercury(II) (2,2'-bipyridylN,N')tris(trifluoroacetatoO)mercury(II), [Hg(C2F3O2)(C10H8N2)2][Hg(C2F3O2)3(C10H8N2)]}, and DHG {bis(2,2'-bipyridylN,N')mercury(II) bis(trifluoroacetate), [Hg(C10H8N2)2](C2F3O2)2}, shows the progressive replacement of trifluoroacetate by the bidentate 2,2'-bipyridyl. Within the series, mercury may be coordinated to zero, one or two bidentate bipyridyl groups. In the extreme case, i.e. DHG, the complex ion [Hg(bipyridyl)2]2+ is formed with exclusion of trifluoroacetate from the mercury coordination.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks global, AHG, GHG, DHG

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Portable Document Format (PDF) file
Supplementary material

CCDC references: 128597; 128598; 128599

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