key term - [Pt(NH3)2Cl2]

Definition

[Pt(NH3)2Cl2] is a coordination complex consisting of a central platinum (Pt) atom bonded to two ammonia (NH3) ligands and two chloride (Cl) ligands. This complex is an important example of coordination chemistry, which describes the formation of compounds involving a central metal atom or ion surrounded by other atoms or molecules known as ligands.

5 Must Know Facts For Your Next Test

1. The platinum (Pt) atom in [Pt(NH3)2Cl2] has an oxidation state of +2, meaning it has lost two electrons.
2. The two ammonia (NH3) ligands in the complex are neutral, while the two chloride (Cl) ligands are negatively charged.
3. The overall charge of the [Pt(NH3)2Cl2] complex is neutral, with no net charge.
4. The geometry of the [Pt(NH3)2Cl2] complex is square planar, with the ligands arranged in a planar configuration around the central Pt atom.
5. Coordination complexes like [Pt(NH3)2Cl2] are important in various applications, such as in catalysis, medicine, and materials science.

Review Questions

• Describe the bonding in the [Pt(NH3)2Cl2] complex and explain how the ligands contribute to the overall charge and geometry of the complex.
  • In the [Pt(NH3)2Cl2] complex, the central Pt atom is bonded to two ammonia (NH3) ligands and two chloride (Cl) ligands. The Pt atom has an oxidation state of +2, meaning it has lost two electrons. The NH3 ligands are neutral, while the Cl ligands are negatively charged. The overall charge of the complex is neutral, with no net charge. The geometry of the complex is square planar, with the ligands arranged in a planar configuration around the central Pt atom. The arrangement of the ligands contributes to the stability and specific properties of the [Pt(NH3)2Cl2] complex.
• Explain the role of coordination complexes like [Pt(NH3)2Cl2] in various applications, such as in catalysis, medicine, and materials science.
  • Coordination complexes like [Pt(NH3)2Cl2] are important in a variety of applications due to their unique chemical and physical properties. In catalysis, the complex can act as a catalyst by facilitating chemical reactions through the interaction of the central metal atom with reactants. In medicine, coordination complexes containing platinum, such as [Pt(NH3)2Cl2], are used as chemotherapeutic agents to treat certain types of cancer. The specific arrangement and bonding of the ligands in coordination complexes can also be exploited in the development of new materials with tailored properties for various applications.
• Analyze how the oxidation state and coordination environment of the central metal atom in [Pt(NH3)2Cl2] contribute to the overall stability and reactivity of the complex.
  • The oxidation state of the central Pt atom in [Pt(NH3)2Cl2] is +2, which is an important factor in determining the stability and reactivity of the complex. The Pt atom has lost two electrons, which allows it to form stable bonds with the ligands (NH3 and Cl). The coordination environment, where the Pt atom is surrounded by four ligands in a square planar arrangement, also contributes to the stability of the complex by providing a favorable geometry for bonding and minimizing steric interactions. The specific combination of the Pt oxidation state and coordination environment in [Pt(NH3)2Cl2] results in a relatively stable complex that can exhibit unique chemical and physical properties, making it useful in various applications, such as in catalysis, medicine, and materials science.

Related terms

Coordination Complex: A coordination complex is a compound formed by a central metal atom or ion that is surrounded by and bonded to a group of other atoms or molecules, known as ligands.

Ligand:

A ligand is an atom, ion, or molecule that is bonded to a central metal atom or ion in a coordination complex.

Oxidation State:

The oxidation state of an atom in a compound is a measure of the degree of oxidation of the atom, and is represented by a number that can be positive, negative, or zero.