Dimethylcadmium
Dimethylcadmium[edit | edit source]
Dimethylcadmium is an organocadmium compound with the formula (CH3)2Cd. It is a colorless, highly toxic liquid that is primarily used in the synthesis of other chemical compounds. Dimethylcadmium is one of the most toxic chemicals known, and it is also highly volatile and flammable.
Structure and Properties[edit | edit source]
Dimethylcadmium is a linear molecule with a cadmium atom bonded to two methyl groups. The cadmium atom is in the +2 oxidation state, and the compound is classified as an organometallic compound. The molecule is relatively simple, with a linear geometry due to the sp hybridization of the cadmium center.
The compound is known for its high volatility and low boiling point, which is around 103 °C. It is also highly reactive, particularly with water and oxygen, which can lead to the formation of cadmium oxide and other byproducts.
Synthesis[edit | edit source]
Dimethylcadmium can be synthesized by the reaction of cadmium chloride with methylmagnesium bromide or methyl lithium. The reaction typically proceeds as follows:
<math>\text{CdCl}_2 + 2 \text{CH}_3\text{MgBr} \rightarrow \text{(CH}_3\text{)}_2\text{Cd} + 2 \text{MgBrCl}</math>
This reaction must be carried out under an inert atmosphere to prevent the highly reactive dimethylcadmium from decomposing or reacting with moisture in the air.
Applications[edit | edit source]
Dimethylcadmium is used primarily in the field of chemical vapor deposition (CVD) to deposit thin films of cadmium-containing materials. It is particularly useful in the production of cadmium telluride and cadmium sulfide films, which are used in photovoltaic cells and other semiconductor applications.
Safety and Handling[edit | edit source]
Due to its extreme toxicity, dimethylcadmium must be handled with great care. It is a potent carcinogen and can cause severe damage to the lungs, liver, and kidneys upon exposure. Proper personal protective equipment (PPE) and ventilation are essential when working with this compound.
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