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Chemical compound From Wikipedia, the free encyclopedia
Germanium(IV) iodide is an inorganic compound with the chemical formula GeI4.
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Identifiers | |
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3D model (JSmol) |
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ChemSpider | |
ECHA InfoCard | 100.033.271 |
EC Number |
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PubChem CID |
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CompTox Dashboard (EPA) |
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Properties | |
GeI4 | |
Molar mass | 580.248 g·mol−1 |
Appearance | red crystals[1] (For colors at different temperatures, see this document)[2] |
Density | 4.32 g·cm−3 |
Melting point | 146 °C (419 K)[1] |
Solubility | Soluble in non-polar solvents such as carbon disulfide, chloroform and benzene[3] |
Hazards | |
GHS labelling:[4] | |
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Danger | |
H314 | |
P260, P264, P264+P265, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P363, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Germanium(IV) iodide can be obtained by the reaction of germanium and iodine[2] or the reaction of germanium dioxide and 57% hydriodic acid:[1]
Germanium(IV) iodide reacts with tetraalkyl tin at 250 °C to form R2SnI2 and R2GeI2 (R= Et, Bu, Ph).[5] It reacts with germanium and sulfur at high temperatures to produce red GeSI2 and orange Ge2S3I2.[6] It reacts with diiron nonacarbonyl in an ionic liquid ([BMIm]Cl/AlCl3) at 130 °C to obtain Ge12[Fe(CO)3]8I4.[7]
Germanium(IV) iodide is an orange-red crystalline solid that hydrolyzes in water. It is soluble in carbon disulfide and benzene, but less soluble in carbon tetrachloride and chloroform.[3] It begins to decompose into germanium(II) iodide and iodine above its melting point.[8] Germanium(IV) iodide crystallizes in the cubic crystal system, space group Pa3 (space group no. 205), with the lattice parameter a = 11.89 Å. The crystal structure consists of tetrahedral GeI4 molecules.
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