Dihydrogen molecule cation

All the problems evoked in this subsection have been thoroughly and recently examined by Silvi et al. for the topological analysis of the electron locahzation fimction [41] and by Boca and Linert [42] for the dihydrogen molecule and the related molecular cation and anion. 

The comparison with the dihydrogen binding energy of the methonium ion is obvious the more stable the cation, the smaller the binding energy to a hydrogen molecule. This applies to the itmer and outer complexes. Thus, one can extrapolate that even more stable cations, like the isopropyl and t-butyl cations, do not benefit from an association with a neutral a-electron donor. 

Fig. 3.14 Molecules with D, D i and D , symmetry (a) iristclhylenediomine)cobnlt(lll) calion. (b) phosphorus penlufluoride, (c) tetrachloroplalinatedl) anion, (d) ma/K-lclrnamminedichlorocobaltdll) cation, (e) beryllium diduoridc. (f) dioxygen, (g) dihydrogen.

Figure 15.3 The proposed template patterning mechanism in the formation of biomimetic microskel-etal structures. The circles with tails represent the cation surfactant, the crosses the anionic dihydrogen phosphate counterions and the connected circles represent the tetraethylene glycol molecules (TEG) (reproduced by permission from Macmillan Publishers Ltd).

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