Heterobinuclear Complexes as Node

FIGURE 12. A ID coordination polymer in [LCu Gd (acdca)i.5(1120)2] I3H2O formed by connecting [CuGd] nodes with the dianion od the acetylenedicarboxylic acid. 

FIGURE 15. (a) Perspective view of the crystallographically independent nodes in 

FIGURE 16. View of the dicyanamido-bridged chain in[LCuCo(dca)2]. 

FIGURE 17. Perspective view of the heterotrimetallic chain [ LCu Gd(H20)3 Fe (CN)6 ]-4H20. 

The dicyanamido-bridged polymer [LCuCo(dca)2] crystallizes from a solution containing [CuL], cobalt nitrate, and sodium dicyanamide. Its crystal structure consists of linear chains, which result from connecting the [CuCo] nodes through single 5-dca bridges (one end of the dca bridge is coordinated into the apical position of the copper ion from a node, and the other one to the cobalt ion from the next node) (Fig. 16). 

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