Copper molecular rearrangements induced

Figure 14.2 Electrochemically induced molecular rearrangements undergone by the copper catenate 12+/ +. In the text, the subscript 4 or 5 indicates the number of nitrogen atoms coordinated to the metal. This number is explicitly shown on the figure.

Figure 6.11 An electrochemically-induced molecular rearrangement of a copper(I)-con-taining unsymmetricaV l -catenane ...

Fig. 13 Principle of the electrochemically induced molecular motion in a rotaxane copper complex. The stable, four-coordinate monovalent complex is oxidized to an intermediate tetrahedral divalent species. This compound undergoes a rearrangement to afford the stable, five-coordinate copper(u) complex.

Fig. 7. Principle of the electrochemically induced molecular motions in a copper(I) complex pseudorotaxane. The stable four-coordinate monovalent complex is oxidized to an intermediate tetrahedral divalent species. This compound undergoes a rearrangement to afford the stable five-coordinate copper(II) complex. Upon reduction, the five-coordinate monovalent state is formed as transient. Finally, the latter undergoes the reorganization process that regenerates the starting complex [the black circle represents Cu(I) and the white circle represents Cu(II)]...

Molecular motors or machines are inspired by biological molecules such as myosin which uses the chemical energy from hydrolysis of adenosine triphosphate to drive the linear push-pull motion of muscle. The different coordination demands of Cu and Cu are the basis of electro-chemically induced molecular motion in a pseudorotaxane complex of copper. As shown in Scheme 2, Cu 4, the stable, four-coordinate form is oxidized to unstable Cu°4, which rearranges to the stable five-coordinate form by sliding along the ligand. Reduction of the stable Cir s... 

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