Monodentate binding

A similar suggestion was advanced by Alyea and Ramaswamy (lib). Another interesting result of the above calculations (81) was that small splittings ( 15 cm 1) of the C—N vibration also should be observed for unsymmetrical bidentate, or monodentate, binding of the R2Dtc ligands. Unfortunately, this contention cannot be verified experimentally because of the inherently large width of the C-N band. 

Goethite EXAFS study of As(V) and Cr(VI) adsorption on goethite. Monodentate binding favored at low surface coverage of As(V), bidentate at high surface coverage Fendorf et al. (1997)... 

An interesting difference emerges between the octahedral and square-planar cases for adenine or adenosine only monodentate binding via Ny is found for both Ru and its Rh analogue (Table... 

Alternative reaction mechanisms include a radical mechanism proposed by Kitajima and Morooka and a mechanism involving a Cu(III) intermediate based on measurements of model compounds. On the basis of the crystal structure of the catechol oxidase-PTU inhibitor complex, monodentate binding of the substrate was suggested for catechol oxidase. A radical mechanism, as proposed for the weak catecholase activity found in Octopus vulgaris hemocyanin, is also possible for catechol oxidase due to the strong structural relationship between catechol oxidase from /. batatas and odg hemocyanin as described above. 

Although in these cases the catalyst was not chiral, the discovery that phenols could activate electrophiles via hydrogen bonding was very important for its enormous potential. Moreover, from an asymmetric perspective, this bidentate interaction was attractive for the reduction of conformational degrees of freedom compared to monodentate binding. 

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