Metal oxo clusters

Thus, the change in oxidation state that would alter the spin is either essential to cater for spin-forbidden transitions or should not occur, to let a spin-allowed reaction to occur rapidly. This principle of specificity was identified in a large array of metal-oxo cluster reactions with small molecules [53, 54] and should be transferable to real catalyst under the concept of local electronic structures at active sites. 

Keywords silanolates, bismuth, sodium, metal oxo clusters... 

Mixed metal oxo-clusters can be prepared by ester elimination between metal alkoxides [M(OR) ] and... 

Several well-documented routes exist for a variety of NBB such as oligosilsesquioxanes and derivatives, organotin-oxo clusters, organically functionalized het-eropolyoxo-tungstates, transition metal oxo clusters. 

Ribot, F. Sanchez, C. Organically functionalized metallic oxo-clusters structurally well-defined nanobuilding blocks for the design of hybrid organic-inorganic materials. Comments Inorg. Chem. 1999, 4-6, 327. 

B6.7 Metal oxo clusters in molybdenum and vanadium phosphate solids... 

Liu, S.-Q., J.-Q. Xu, H.-R. Sun, and D.-M. Li (2000). me5 o-Tetrakis(4-V-benzylpyridyl)porphyrin and its supramolecular complexes formed with anionic metal-oxo cluster Spectroscopy and electrocatalytic reduction of dioxygen. Inorg. Chim. Acta 306, 87-93. 

On the Feasible Ways of the Polynuclear Metal-Oxo Clusters Formation... 

Fig. 11 Schematic depicting an inverse micelle sol-gel method developed for the preparation of mesoporous late transition metal oxides, (a) Transition metal oxo-clusters, (b) P123 surfactant, (c) 1-butanol, which stabilises the micelles and increases the solubility of the surfactant and (d) nitrate ions. Reproduced with permission from ref. 45. Copyright 2013 Nature Publishing Group. ...

This concept requires the preparation of molecular clusters covered by reactive organic groups that are capable of binding to organic polymers. The discussion in this article is restricted to metal oxo clusters however, the concept is rather general. 

The only metal oxo cluster type previously investigated in some detail as a constituent of inorganic-organic hybrid polymers are the polyhedral oligomeric... 

Investigation of the materials properties of the cluster-based hybrid polymers is in its infancy, and the properties of the new hybrid polymers are far from being exploited. We have seen two clear trends in the materials properties of inorganic-organic hybrid polymers prepared by polymerization of metal oxo clusters with organic comonomers. They depend on the portion of incorporated cluster and, surprisingly, also on the kind of incorporated cluster. ... 

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