Germanium tetrafluoride, also known as GeF4, is a chemical compound composed of germanium and fluorine. It is a colorless, volatile liquid at room temperature and pressure. GeF4 has a molecular weight of approximately 130.54 g/mol.

Properties:

• Chemical formula: GeF4
• Molar mass: 130.54 g/mol
• Appearance: Colorless liquid
• Density: 2.96 g/cm³ (at 25°C)
• Melting point: -36.5°C
• Boiling point: 84.1°C
• Solubility: Insoluble in water, soluble in organic solvents like benzene and chloroform
• Odor: Pungent odor

Preparation:
Germanium tetrafluoride can be prepared through the reaction of germanium dioxide (GeO2) with hydrofluoric acid (HF) or hydrogen fluoride (HF) gas. The reaction is as follows:

GeO2 + 4HF → GeF4 + 2H2O

Uses:

1. Semiconductor industry: Germanium tetrafluoride is used as a precursor in the production of germanium-based materials for semiconductors.
2. Optical fibers: It is used in the manufacturing of optical fibers for telecommunications.
3. Chemical vapor deposition (CVD): GeF4 is employed as a source material in CVD processes for depositing thin films of germanium on various substrates.
4. Catalyst: It can act as a catalyst in certain chemical reactions.
5. Fluorinating agent: GeF4 is used as a fluorinating reagent in organic synthesis.

Safety:
Germanium tetrafluoride is toxic and corrosive. It should be handled with care, and appropriate safety precautions should be followed when working with this compound. It can cause severe burns and eye damage, so protective equipment like gloves and goggles should be worn. Proper ventilation is necessary when using GeF4 to avoid inhalation of its vapors.

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