what is EDTA? what is its denticity?
Answers
Answered by
11
It is an aminopolycarboxylic acid and a colourless, water-soluble solid. Its conjugate base is ethylenediaminetetraacetate. It is widely used to dissolve limescale. Its usefulness arises because of its role as a hexadentate ("six-toothed") ligand and chelating agent, i.e., its ability to "sequester" metal ions such as Ca2+ and Fe3+. After being bound by EDTA into a metal complex, metal ions remain in solution but exhibit diminished reactivity. EDTA is produced as several salts, notably disodium EDTA and calcium disodium EDTA.
Denticity refers to the number of donor groups in a single ligand that bind to a central atom in a coordination complex.In many cases, only one atom in the ligand binds to the metal, so the denticity equals one, and the ligand is said to be monodentate (sometimes called unidentate). Ligands with more than one bonded atom are called polydentate or multidentate. The word denticity is derived from dentis, the Latin word for tooth. The ligand is thought of as biting the metal at one or more linkage points. The denticity of a ligand is described with the Greek letter κ('kappa').For example, κ6-EDTA describes an EDTA ligand that coordinates through 6 non-contiguous atoms.
Denticity is different from hapticity because hapticity refers exclusively to ligands where the coordinating atoms are contiguous. In these cases the η ('eta') notation is used.Bridging ligands use the μ ('mu') notation
Denticity refers to the number of donor groups in a single ligand that bind to a central atom in a coordination complex.In many cases, only one atom in the ligand binds to the metal, so the denticity equals one, and the ligand is said to be monodentate (sometimes called unidentate). Ligands with more than one bonded atom are called polydentate or multidentate. The word denticity is derived from dentis, the Latin word for tooth. The ligand is thought of as biting the metal at one or more linkage points. The denticity of a ligand is described with the Greek letter κ('kappa').For example, κ6-EDTA describes an EDTA ligand that coordinates through 6 non-contiguous atoms.
Denticity is different from hapticity because hapticity refers exclusively to ligands where the coordinating atoms are contiguous. In these cases the η ('eta') notation is used.Bridging ligands use the μ ('mu') notation
Answered by
8
Answer: ethylenediaminetertracetic acid
Denticity of EDTA is 6.
Explanation:
EDTA is a ligand which contains donor atoms containing lone pair of electrons and can donate electrons to positively charged species to form complexes.
EDTA is ethylenediaminetetracetic acid with molecular formula of
Denticity is the number of donor atoms present in a ligand.
EDTA contains two nitrogen atoms and four oxygen atoms which can donate lone pair of electrons.Thus denticity of EDTA is 6.
Attachments:
Similar questions