Bis bipyridyl cadmium II chloride, also known as cadmium bipyridine chloride, is a metal complex compound with the formula Cd(bpy)2Cl2. It is a bright yellow or orange solid that is soluble in water. Bis bipyridyl cadmium II chloride is used as a precursor to other cadmium compounds, as a catalyst in organic reactions, and as a photosensitizer in solar cells.

The Cd(II) ion in bis bipyridyl cadmium II chloride is octahedrally coordinated by two chloride ions and two bipyridine ligands. The bipyridine ligands are bidentate, meaning that they can coordinate to the metal ion through two nitrogen atoms. This results in a stable complex with a distorted octahedral geometry.

Bis bipyridyl cadmium II chloride is a versatile compound with a wide range of applications. It is a valuable reagent in organic synthesis, and it is also used in the preparation of other cadmium-based materials. The compound has also been investigated for its potential applications in solar cells and other optoelectronic devices.

Synthesis

Bis bipyridyl cadmium II chloride can be synthesized by reacting cadmium chloride with bipyridine in a solvent such as methanol or ethanol. The reaction is typically carried out under reflux conditions for several hours.

The product is a bright yellow or orange solid that can be recrystallized from hot water. The yield of the reaction is typically high, and the product is of good purity.

Structure

Bis bipyridyl cadmium II chloride crystallizes in the monoclinic space group P21/c. The unit cell contains two molecules of the complex, which are arranged in a head-to-tail fashion. The Cd(II) ion is octahedrally coordinated by two chloride ions and two bipyridine ligands.

The bipyridine ligands are bidentate, meaning that they can coordinate to the metal ion through two nitrogen atoms. This results in a stable complex with a distorted octahedral geometry.

Properties

Bis bipyridyl cadmium II chloride is a bright yellow or orange solid that is soluble in water. The compound has a molecular weight of 366.55 g/mol and a density of 2.23 g/cm3.

The compound is thermally stable and does not decompose until it is heated to a temperature of approximately 300 °C. Bis bipyridyl cadmium II chloride is also resistant to hydrolysis and oxidation.

Applications

Bis bipyridyl cadmium II chloride is a versatile compound with a wide range of applications. It is a valuable reagent in organic synthesis, and it is also used in the preparation of other cadmium-based materials. The compound has also been investigated for its potential applications in solar cells and other optoelectronic devices.

Organic Synthesis

Bis bipyridyl cadmium II chloride is a versatile reagent in organic synthesis. It can be used as a catalyst for a variety of reactions, including the Heck reaction, the Suzuki reaction, and the Stille reaction.

The compound is also used as a precursor to other cadmium-based catalysts. For example, bis bipyridyl cadmium II chloride can be used to prepare cadmium acetate, which is a catalyst for the Diels-Alder reaction.

Preparation of Cadmium-Based Materials

Bis bipyridyl cadmium II chloride is used in the preparation of other cadmium-based materials. For example, the compound can be used to prepare cadmium sulfide, which is a semiconductor material.

Cadmium sulfide is used in a variety of applications, including solar cells, photodetectors, and light-emitting diodes.

Solar Cells

Bis bipyridyl cadmium II chloride has been investigated for its potential applications in solar cells. The compound is a photosensitizer, which means that it can absorb light and generate an electrical current.

Bis bipyridyl cadmium II chloride has been used to prepare dye-sensitized solar cells. These cells are relatively inexpensive to produce, and they have the potential to be used in a variety of applications, including portable electronics and large-scale solar power plants.

Other Applications

Bis bipyridyl cadmium II chloride has also been investigated for its potential applications in other optoelectronic devices, such as light-emitting diodes and lasers.

The compound is also used as a reagent in analytical chemistry. For example, bis bipyridyl cadmium II chloride can be used to detect the presence of cadmium in water samples.

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