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Controlling transformations in the assembly of polyoxometalate clusters: {Mo11V7}, {Mo17V8} and {Mo72V30}

“…2 In an effort to gain control and direct the assembly process, different techniques have been employed such as the use of structure directing ''shrink-wrapping'' organic cations, 2 control of ionic strength, 3 reaction and crystallisation under continuous flow conditions, 4 and the direct observation of new clusters as they are formed using electrospray and cryospray mass spectrometry. 5 In heteropolyanion chemistry, much of these reactions have been carried out utilising tetrahedral main group anions such as sulfate and phosphate, 6 however the use of the pyramidal sulfite anion can have a profound effect on the structure and functionality of the resulting cluster 7 allowing the assembly of clusters with a remarkable range of structures and properties. 8,9 This is because the C 3v symmetric sulfite anion contains a nonbonding, but stereochemically active lone pair of electrons which can help impart additional redox 9 and photophysical properties.…”

Hydrothermal synthesis, structure and thermal property of a 2-dimensional network: sodium sulfate [Ni(H2O)6(NaSO4)2]

“…The bond distances of Ni-O fall in the range of 2.031(2)-2.070(2) Å, comparable with those of similar coordination complexes reported by Charlotte du Peloux et al[23] and Chih-Chieh Wang et al[24]. Each S atom is tetrahedrally coordinated to four oxygens, three of which are connected to three sodium(I) atoms and the remaining is the terminal S-O group.…”

Synthesis, characterization, and crystal structures of two new polyoxomolybdate wheel clusters

“…Therefore, the self-assembly process of nanoscale polyoxometalates has attracted the attentions of many groups, and a series of attractive giant polyoxometalates with nanoscale dimensions have been reported. Pope [6], Mü ller [7], Séch-eresse [8], Yamase [9], Kortz [10], Lu [11] and Zhang [12] and their co-workers also reported a series of nanoscale polyoxometalates.…”