Coordination Compounds
Telangana Open School (TOSS) · Class 12 · Chemistry
Summary of Coordination Compounds for Telangana Open School (TOSS) Class 12 Chemistry. Key concepts, important points, and chapter overview.
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Overview
Coordination compounds are a special class of chemical compounds where a central metal atom or ion is bonded to a set of molecules or ions called ligands. These compounds are essential in industrial processes, biological systems, and analytical chemistry. Unlike simple ionic compounds, coordination
Key Concepts
Werner proposed that metals exhibit two
Werner proposed that metals exhibit two types of valency: primary (ionizable) and secondary (non-ionizable). The secondary valency corresponds to the
Ligands are molecules or ions
Ligands are molecules or ions that donate electron pairs to the central metal atom. They can be monodentate (e.g., NH₃), bidentate (e.g., ethylenediam
Coordination compounds are named by first
Coordination compounds are named by first listing ligands in alphabetical order, followed by the metal name. Anionic ligands end in 'o' (e.g., chloro)
VBT explains bonding through hybridization
VBT explains bonding through hybridization of metal orbitals. Ligands donate electron pairs to form coordinate bonds. Depending on whether inner (d²sp
CFT treats ligands as point charges
CFT treats ligands as point charges that split the degenerate d-orbitals of the metal ion. In octahedral fields, d-orbitals split into lower-energy t₂
Learning Objectives
- State the postulates of Werner's coordination theory
- Define ligand, coordination number, and coordination sphere
- Name coordination compounds using IUPAC rules
- Explain Valence Bond Theory and apply it to predict hybridization, shape, and magnetic behavior
- Understand Crystal Field Theory and its role in explaining color and magnetic properties
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