Ad
related to: polymeric metal halides
Search results
Results From The WOW.Com Content Network
Metal halides are compounds between metals and halogens. Some, such as sodium chloride are ionic, while others are covalently bonded. A few metal halides are discrete molecules, such as uranium hexafluoride, but most adopt polymeric structures, such as palladium chloride. [1] [2]
It is an intermediate in the crystal bar process for producing hafnium metal. In this compound, the hafnium centers adopt octahedral coordination geometry. Like most binary metal halides, the compound is a polymeric. It is one-dimensional polymer consisting of chains of edge-shared bioctahedral Hf 2 I 8 subunits, similar to the motif adopted by ...
Copper(I) iodide, like most binary (containing only two elements) metal halides, is an inorganic polymer. It has a rich phase diagram , meaning that it exists in several crystalline forms. It adopts a zinc blende structure below 390 °C (γ-CuI), a wurtzite structure between 390 and 440 °C (β-CuI), and a rock salt structure above 440 °C (α ...
In fact all "lower halides" (i.e. where halide/M ratio is <4) in the "early transition metal series (Ti, V, Cr, Mn triads) do. The species Mo 6 Cl 12 is polymeric, consisting of cubic Mo 6 Cl 8 4+ clusters interconnected by chloride ligands that bridge from cluster to cluster.
Halide minerals contain halides. All these halide anions are colorless. Halides also form covalent bonds, examples being colorless TiF 4, colorless TiCl 4, orange TiBr 4, and brown TiI 4. The heavier members TiCl 4, TiBr 4, TiI 4 can be distilled readily because they are molecular. The outlier is TiF 4, m.p. 284 °C, because it has a polymeric ...
This method, independently discovered in 1995 by Mitsuo Sawamoto [16] and by Jin-Shan Wang and Krzysztof Matyjaszewski, [17] [18] requires reversible activation of a dormant species (such as an alkyl halide) and a transition metal halide catalyst (to activate dormant species).
Mixed alkyl/aryl-halide compounds, which contain a single C-M bond and a C-X bond, are typically prepared by oxidative addition. Magnesium-containing compounds of this configuration are known as the Grignard reagents, though some calcium Grignard's are known and more reactive and sensitive to decomposition. Calcium grignard's must be pre ...
A bridging ligand links two or more metal centers. Virtually all inorganic solids with simple formulas are coordination polymers, consisting of metal ion centres linked by bridging ligands. This group of materials includes all anhydrous binary metal ion halides and pseudohalides. Bridging ligands also persist in solution.