Binary Halides

Both I2 and Bt2 are commercially prepared by oxidation of their halide binary salts from oceans or natural waters, and CI2 can be prepared by electrolyzing aqueous NaCl solutions. Why then is it not possible to prepare F2 by electrolysis of an aqueous NaF solution ... 

Halides Binary compounds of the halogens with less electronegative elements. 

The comproportionation route (Corbett, 1983a, 1991) is widely used and is very efficient when pure phases are desired, especially when the phase relationships are known or can be anticipated. It led to a great variety of reduced rare-earth halides, binary, ternary, and higher, simple, and complex salts, and such that incorporate metal clusters interstitially stabilized by a non-metal atom or by a (transition) metal atom, for example,... 

A summary of the vapor complexes formed in rare-earth halide/alkali halide binary systems according to the general reaction scheme (1) (sect. 1.1) is given in the present section. Studied systems involving divalent metal halides include only the ScCl3-MgCl2... 

Nitrogen does form a number of binary compounds with the halogens but none of these can be prepared by the direct combination of the elements and they are dealt with below (p. 249). The other Group V elements all form halides by direct combination. 

Halides. AH of the anhydrous and hydrated binary haUdes of iron(Il) and iron(Ill) are known with the exception of the hydrated iodide of iron(Ill). A large number of complex iron haUdes have been prepared and characterized (6). 

Ghromium(VI) Gompounds. Virtually all Cr(VI) compounds contain a Cr—O unit. The cbromium (VT) fluoride [13843-28-2], CrF, is the only binary halide known and the sole exception. This fluoride, prepared by fluorinating Cr at high temperature and pressure, easily disproportionates... 

In spite of the hazardous nature of Sc4N4, this binary selenium nitride has been used for the synthesis of other Se-N compounds, all of which have sulfur analogues (Scheme 5.2). " However, safer alternatives to the use of Sc4N4, e.g., selenium-nitrogen halides and silicon-nitrogen-selenium reagents, are available for the development of Se-N chemistry. ... 

This section deals with the binary compounds that nitrogen forms with metals, and then describes the extensive chemistry of the hydrides, halides, pseudohalides, oxides and oxoacids of the element. The chemistry of P-N compounds is deferred until Chapter 12 (p. 531) and S-N... 

It is a curious paradox that NH3, the most stable binary halide of N, was not prepared until 1928, more than 115 y after the highly un.stable... 

Table 12.3 Some physical properties of the binary phosphorus halides...

Another example of a divalent metal of this group, but which in fact is probably entirely analogous to the dihydiides, is LaL. However, the most extensive set of examples of these metals in low formal oxidation states is provided by the binary and ternary halides produced by... 

Again, in the -(-3 oxidation state, only gold is known to form binary halides, though AUI3 has not been isolated. The chloride and the... 

Early in their work on molten salt electrolytes for thermal batteries, the Air Force Academy researchers surveyed the aluminium electroplating literature for electrolyte baths that might be suitable for a battery with an aluminium metal anode and chlorine cathode. They found a 1948 patent describing ionically conductive mixtures of AICI3 and 1-ethylpyridinium halides, mainly bromides [6]. Subsequently, the salt 1-butylpyridinium chloride/AlCl3 (another complicated pseudo-binary)... 

Various ill-defined binary halides have been reported but not characterized, such as Rhl2. 

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