Define the following and give one example(a) Polydentate ligand
Question
Define the following and give one example(a) Polydentate ligand
Solution
A polydentate ligand is a type of ligand that has multiple donor atoms capable of forming coordination bonds with a central metal ion. These donor atoms can be either the same or different. The coordination bonds are formed through the lone pairs of electrons present on the donor atoms.
For example, ethylenediamine (en) is a polydentate ligand. It has two nitrogen atoms that can donate lone pairs of electrons to form coordination bonds with a metal ion.
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1. The metal ion (central ion) is listed first.2. Anionic ligands are written first in alphabetical order according to the first symbol of their formulae. Neutral ligands are written next in alphabetical order, according to the first letter of their formulae.3. The formulae of the entire coordination entity, whether charged or not, are enclosed in square brackets. If the coordination entity is negatively charged, the formula is preceded by the cation formula. When ligands are polyatomic (e.g., PPh3), their formulae are enclosed in parentheses. Ligand abbreviations are also enclosed in parentheses (e.g. bipy, acac etc,.).4. Write the cation first, followed by the anion.5. The total charge of a compound is zero, the charge of the cations should be balanced by the charge of the anion(s)Provide the formulae for the following coordination compounds and complexes. a. diamminedichloroplatinate (II) ANS: Answer 1 Question 8b. sodium amminetrichloroplatinate (II) ANS: Answer 2 Question 8c. sodium pentaaminenitrocobalt(III) ANS: Answer 3 Question 8d. hexaamminechromium(III) tetrachlorocuprate(II) ANS: Answer 4 Question 8e. trans-aquabis(ethylenediamine)iodocobalt(III) nitrate ANS:
"CO is an acid ligand."- Explain
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