Gallium physical properties

Gallane, 41 172-173, 196-198 chemical analysis, 41 199, 201 chemical properties, 41 208-209 complexes, 41 175-178 electron diffraction, 41 204-207 2-galla-arachno, tetraborane, 41 216-220 gallaborane, 41 211-216 H NMR spectrum, 41 207-208 IR spectrum, 41 200-202 physical properties, 41 199 search for, 41 173-175 synthesis, 41 198-199 vibrational spectra, 41 200-215 2-Galla-araclino-tetraborane, 41 216-220 "B NMR spectrum, 41 217, 219-220 decomposition of vapor, 41 216-217 electron diffraction, 41 218 structure, 41 217-218 Gallium... 

The physical properties of bismuth, summarized in Table 1, are characterized by a low melting point, a high density, and expansion on solidification. Thermochemical and thermodynamic data are summarized in Table 2. The solid metal floats on the liquid metal as ice floating on water. Gallium and antimony are the only other metals that expand on solidification. Bismuth is the most diamagnetic of the metals, and it is a poor electrical conductor. The thermal conductivity of bismuth is lower than that of any other metal except mercury. 

The physical and chemical properties of the tetrahydroborates show more contrasts than the salts of nearly any other anion. The alkali metal salts are the most stable. In dry air, NaBH4 is stable at 300°C and in vacuo to 400°C with only partial decomposition. In contrast, several tetrahydroborates, including the titanium, thallium, gallium, copper, and silver salts, are unstable at or slightly above ambient temperatures. The chemical and physical properties of the tetrahydroborates are closely related to molecular structure. Sodium tetrahydroborate, which is typical of the alkali metal tetrahydroborates except for the lithium salt, has a face-centered cubic (fee) crystal lattice which is essentially ionic and contains the tetrahedral [BHJ- anion. The tetrahydroborates of the polyvalent metals are in many cases the most volatile derivatives of these metals known. Aluminum tris(tetrahydroborate)... 

Gallium alkoxides physical properties, 345 Gallium complexes dimethyl sulfoxide, 488 phthalocyanines, 863 porphyrins, 821 Gallium(III) complexes porphyrins evolution, 961 tropolones rearrangement, 382 Gallium isopropoxides synthesis... 

Relatively few organic compounds of gallium have been described, indicating that gallium chemistry is still in a stage where most of the progress is achieved by synthetic work rather than through study of reactions and physical properties. 

Gallium arsenide is a compound semiconductor with a combination of physical properties that has made it an attractive candidate for many electronic applications. From a comparison of various physical and electronic properties of GaAs with those of Si (Table 4), the advantages of GaAs over Si can be readily ascertained. 

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