Transition metals cyanide-bridged complexes

CYANIDE-BRIDGED COMPLEXES OE TRANSITION METALS Possible geometries for complexes with pentadentate blocking ligands L ... 

Three types of pentanuclear cyanide-bridged complexes were described, namely, TBPs, cross-shaped clusters, and open chains. As shown by the Dunbar group (173-177), the TBP architecture is amenable to a wide variety of transition metal ions. In fact, neutral complexes of the general formula [M tmphen)2]3[M CN)6]2 were prepared with 22 different combinations of metal ions (Table V). In these structures (Fig. 34), two [M (CN)6] anions occupy the axial positions of the TBP core. Three cyanide ligands of each hexacyanometalate unit act as bridges, whereas... 

The discussion of the structural chemistry of multinuclear cyanide-bridged complexes is concluded by considering two related families of compounds, the architecture of which are based on a face-centered cubic (fee) arrangement of transition metal ions. 

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