Fig. 14.13. Unique nanocluster aggregates in the gas phase:
MALDI mass spectra showing the neutral clusters of the type
{Mo 72 Fe 30 } and {Mo 102 } and their oligomers.
Fig. 14.14. pH controlled nucleation in
nanoscaled cluster cavities: the cluster
[{(Mo
VI )Mo
VI
5 } 12 {L} 30 ] with L ¼ phosphate
(gray tetrahedra left) shows in the presence of
molybdate in solution and by lowering the pH
to nearly 2 a ‘nucleation’ process inside the
cluster cavities with the formation of PaOaMo
bonds (new {MoO 3 } units gray spheres).
14 Oxomolybdates: From Structures to Functions in a New Era of Nanochemistry
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