Metal-based networks

Chowdry, M. M., Mingos, D. M. R, White, A. J. P. and Williams, D. J. (1996). Novel supramolecular self-assembly of a transition-metal-organo network based on simultaneous coordinate- and hydrogen-bond interactions. J. Chem. Soc, Chem. Commun., 899. 

Rottgers and Sheldrick have recently reported that l,10-dithia-18-crown-6 1 formed lamellar coordination polymer with Cul and ion-ligating iodocuprate(i) based on two-dimensional coordination networks with Cul and alkali metal cations <2000MI271>. Both anionic frameworks contain characteristic iodocuprate(l) chains that are bridged in a /r-Sl,S10 manner by 1. However, the structure-directing influence of the alkali metal cation manifests itself in both the connectivity pattern and the stoichiometry of the resulting Cul-based network. 

Orbitally rich refers to an atom or fragment that possesses more valence functions than valence electrons Tig levels three metal-based d-functions in a transition metal fragment that are often considered to be nonbonding with respect to a cluster network... 

A. Muller, P. Kogerler, and C. Kuhlmann, A variety ofcombinatorially linkable units as disposition from a giant icosahedral keplerate to multi-functional metal-oxide based network structures, Chem. 

Compared to sihca-based networks, nonsiliceous ordered mesoporous materials have attracted less attention, due to the relative difficulty to apply the principles employed to create mesoporous silica to nonsilica compositions. Other framework compositions are much more sensitive than silica to redox reactions, hydrolysis, or phase transformations. The reactivity of the inorganic precursors is much more difficult to control in the case of transition metal oxides, the reaction kinetics being much faster. Also, crystalline nonsiliceous frameworks are less prone to adapt the curvature of micellar aggregates, whereas the amorphous nature of silica allows for certain flexibility. 

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