Glide motion

The formation of Li +, Cd +, Zn + and Co + (but not Cu+) complexes of 12 is biphasic. The first step (overall second-order) likely represents binding of the metal ion to one of the chelating subunits of 12. The second step (first-order) is very slow (k 10 — ls ) and possibly corresponds to the gliding motion of one ring within the other while the second phenanthroline fragment attempts to bind to the metal center. 

The Archetype Electrochemically Induced Ring Gliding Motions in a Two-Geometry Copper-Complexed Catenanes... 

An interesting question is dealing with the rate of the ring gliding motion that... 

Electrochemically Driven Ring Gliding Motion in Catenanes I 271... 

An interesting question deals with the rate of the ring gliding motion that transforms 23(4j2+ into 23 2+ or, after reduction of the latter, 23(S)+ into 23(4)+. It was... 

Plasticity. Slip, the gliding motion of full planes of atoms or partial planes, called dislocation, allows for the deformation processing of polycrystalline metals (forging, extrusion, rolling, swaging, and drawing). Slip occurs much more readily across close-packed planes in close-packed directions. 

The gliding motion of closed-packed atomic planes. 

The first successful structure of this type is the catenate shown in Figure 31, where a gliding motion of one ring over the other could be triggered electrochemically [95, 96] and photochemically [96]. 

Minute amounts of added material can change the strength greatly. For example, added carbon atoms in iron can act as dislocation traps and halt the gliding motion. Work-hardening of metals is a process whereby many of the dislocations intersect and collide with one another, thereby becoming partially immobilized. The movement of dislocations can be studied at various temperatures and the activation energy found. At 1500°C plastic flow can be seen, even in diamond. 

Changes in log (rate of gliding motion) versus 1/7 of thiobacterium (Beggiatoa alba) Abrupt changes in log (respiratory frequency) versus temp for carp (Cyprinus carpio) Abrupt change in life expectancy. Drosophila subobscura... 

It is noteworthy that the redox couples of reactions 1-3 [Eq. (1)] are perfectly reversible provided the scan rate is sufficient (>100 mV s 1). The gliding motions, either for the divalent or the monovalent complex, are slow on the time scale of the voltammetry measurements (lines 2 and 4). 

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