Gallium(III) selenide

Galliumsesquiselenid

Black solid

Fixed

5.203 g · cm -3

1020 ° C.

Risk

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Gallium (III) selenide is an inorganic chemical compound of the gallium from the group consisting of selenides.

Production and representation

Gallium (III) selenide can be obtained by the reaction of gallium, selenium at high temperatures.

Properties

Gallium ( III) selenide is a compact mass of black, finely crushed red solid, which is quite hard and brittle. It has a cubic crystal structure of zinc blende type with space group F43m. The compound crystallizes in two modifications. The α - form with zinc blende lattice which is stable at low temperatures and a high-temperature modification ( β ) with wurtzite structure. The conversion temperature is between 550 ° C and 600 ° C.