Germanium tetrachloride
Germanium tetrachloride is a colourless, fuming liquid with a peculiar, acidic odour. It is used as an intermediate in the production of purified germanium metal. In recent years, GeCl4 usage has increased substantially due to its use as a reagent for fiber optic production.
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| Names | |||
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| IUPAC names
Germanium tetrachloride Tetrachlorogermane Tetrachloridogermanium | |||
| Other names
Germanium(IV) chloride Neutral germanium chloride (1:4) | |||
| Identifiers | |||
3D model (JSmol) |
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| ChemSpider | |||
| ECHA InfoCard | 100.030.093 | ||
PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |||
| GeCl4 | |||
| Molar mass | 214.40 g/mol | ||
| Appearance | Colourless liquid | ||
| Density | 1.879 g/cm3 (20 °C) 1.844 g/cm3 (30 °C) | ||
| Melting point | −49.5 °C (−57.1 °F; 223.7 K) | ||
| Boiling point | 86.5 °C (187.7 °F; 359.6 K) | ||
| Soluble, hydrolyses | |||
| Solubility | Soluble in ether, benzene, chloroform, CCl4 Very soluble in HCl, dilute H2SO4 | ||
| −72.0·10−6 cm3/mol | |||
Refractive index (nD) |
1.464 | ||
| Structure | |||
| tetrahedral | |||
| Thermochemistry | |||
Std molar entropy (S⦵298) |
245.6 J·mol−1·K−1 | ||
Std enthalpy of formation (ΔfH⦵298) |
−531.8 kJ·mol−1 | ||
Gibbs free energy (ΔfG⦵) |
−462.7 kJ·mol−1 | ||
| Hazards | |||
| Occupational safety and health (OHS/OSH): | |||
Main hazards |
Reacts slowly with water to form HCl and GeO2, corrosive, lachrymator | ||
| NFPA 704 (fire diamond) | |||
| Flash point | Non-flammable | ||
| Safety data sheet (SDS) | "External MSDS" | ||
| Related compounds | |||
Other anions |
Germanium tetrafluoride Germanium tetrabromide Germanium tetraiodide | ||
Other cations |
Carbon tetrachloride Silicon tetrachloride Tin(IV) chloride Lead(IV) chloride | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |||
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