Gallium with

The metal reacts with cold chlorine strongly exothermically, and the compact metal with bromine even at -33°C, reaction being violent at ambient temperature [1], Interaction of gallium with liquid bromine at 0°C proceeds with a flash, resembling the action of alkali metals with water [2],... 

Note that only in the case of gallium, with a deep subcooling, the reference is linked to the melting point instead that to the freezing point. a All substances (except 3 He) are of natural isotopic composition. e-H2 is hydrogen at the equilibrium concenttation of the ortho and para molecular forms. 

The value of the electric permittivity of water in the inner part of the double layer is commonly accepted as equal to 6. A much higher capacity of the inner layer at the Ga/solution interface was explained by the weak interaction of gallium with water, leading to a high value of As shown... 

Gallium(III) chloride is prepared by the reaction of gallium with hydrogen chloride. Also, it can be made by direct combination of gallium and chlorine. The reaction is highly vigorous. 

Using glassy carbon they observed a three-dimensional nudeation of gallium, with diffusion-controlled growth of the nuclei. The diffusion coefficients for the Ga(III) and the Ga(I) species were 2.28 x 10 7 and 9.12 x 10-7cm2 s 1, respectively. 

Bombardment of natural gallium with fast neutrons yields C. Both C and B are among the products resulting from the bombardment of germanium (isotopes 70, 72, 73, 74, and 76) with fast neutrons. A is a positron emitter, whereas B and C are emitters. 

The commercially available materials, HC1, (CH3)3A1, and CF3CC>2H, were purified by trap-to-trap distillation in the vacuum line. S03 was generated as needed by passing the vapors from a sample of Sulfan B over a P205 column. Trimethylgallium was prepared by the reaction of gallium with dimethylmercury at 130° C. Difluoramine was prepared by the thiophenol reduction of tetrafluorohydrazine (3). Methyldifluoramine was obtained by fluorinating sodium N-methyl sulfamate. 

Although the coordination of gallium with nitrogen-based crown ethers, azacrown ethers, is not as well developed as that of aluminum, reports have demonstrated that gallium behaves in a fashion similar to that of its lighter congener with [14]aneN4. ... 

The sensitive and selective spectrophotometric methods involve extraction of ion-associates of the GaCU" ion with basic dyes (e.g., Rhodamine B). Methods based on ternary complexes of gallium with chelating triphenylmethane reagents (e.g., Eriochrome Cyanine R) and some surfactants are very sensitive but less selective. 

Extraction separation of Ga. To the sample solution (in 7-8 M HCl) containing not more than 15 pg of Ga, add the Ti(III) solution [the amount depends on the Fe(III) present]. Extract the gallium with two portions of DIPE (shake with each portion for about 1 min). 

Determination of Ga. Place in a beaker the ethereal extract obtained as above, add 50 mg of NaCl, and evaporate to dryness on a water-bath. Dissolve the residue in 5 ml of 6.5 M HCl containing TiCls, transfer the solution to a separating funnel, add 1 ml of the Rhodamine B solution, and extract gallium with two 10-ml portions of chlorobenzene and CCI4 (3-rl) solution (shake with each portion for about 1 min). Place the clear extract in a 25-ml standard flask, dilute to the mark with solvent, mix, and measure the absorbance of the solution at 560 nm vs. a reagent blank. 

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