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Which complex contains chelating ligands?
- What Are Different Types of Ligands?
- Monodentate Ligands
- Bidentate Ligands
- Tridentate Ligands and Polydentate Ligands
- Chelate Effect
- Ambidentate Ligands
- Bridging Ligands
- Frequently Asked Questions
A ligandis an ion or molecule which donates a pair of electrons to the central metal atom or ion to form a coordination complex. The word ligand is from Latin, which means “tie or bind”. Ligands can be anions, cations, and neutral molecules. Ligands act as Lewis bases (donate electron pairs), and central metal atoms are viewed as Lewis acids (elect...
Monodentate ligands are also called “one-toothed“ because they bite the metal atom only in one place.
Lewis bases, which donate two lone pairs of electrons to the central metal atom, are known as bidentate ligands. They are often referred to as “chelating ligands”. The complex which contains chelating ligands is called “Chelates”.
Tridentate ligands have three lone pairs of electrons to the central metal atom or ion. Molecules with four donor atoms are called tetradentate, five donor atoms are called pentadentate, and six donor atoms are called hexadentate. They are generally mentioned as polydentate ligands.
The chelate effect explains the enhanced affinity of chelating ligands for central metal ions or atoms compared to the affinity of nonchelating monodentate ligands for the same metal.
Ligands with more than one potential donor atom are known as ambidentate ligands. For example, thiocyanate ion(NCS–) which can bind to the central metal atom or ion with either nitrogen or sulfur atoms.
A bridging ligand is one which is bound to more than one metal atom. The bridge ligand is preceded by “mu,\eta”, which relates to hapticity. The list of bridging ligands is as follows: Organic ligands – Organic derivatives of above-mentioned inorganic ligands, and they form a strong bridge between metal centres. Note: Hapticity is the number of ato...
1. What type of ligand is EDTA? Answer: EDTA is an example of a hexadentate ligand. It binds four times at the oxygen atom and twice at nitrogens. EDTA is usually used in the form of salt or dry form. EDTA is a great chelating agent which forms multiple bonds in coordination compounds. 2. Is NH3an example of a monodentate ligand? Answer: Ammonia ha...
Game-Based Learning for Teachers, Students, and Families. Over 2,000, curriculum-aligned, math and science games, that are actually fun, created to engage students and assist teachers in class or at home. Watch Video Get Started Now.
11 games. In this series of games, your students will learn about the building blocks of matter. The Atoms and Elements learning objective — based on NGSS and state standards — delivers improved student engagement and academic performance in your classroom, as demonstrated by research.
9 games. In this series of games, your students will learn how to determine whether a chemical reaction has occurred. The Chemical Reactions: Evidence of a Reaction learning objective — based on NGSS and state standards — delivers improved student engagement and academic performance in your classroom, as demonstrated by research.
In this series of games, your students will learn about different molecular structures and combinations. The Molecules and Compounds learning objective — based on NGSS and state standards — delivers improved student engagement and academic performance in your classroom, as demonstrated by research.
