Advertisements
Advertisements
Questions
Explain the following, giving two examples:
Homoleptic
Explain a homoleptic complex with an example.
Advertisements
Solution
Homoleptic refers to a coordination complex where all the ligands attached to the central metal ion are the same type. For example:
- [Cu(NH3)4]2+: This is a homoleptic complex where all four ligands are ammonia (NH3) molecules, coordinated to the copper (Cu2+) ion.
- [NiCl6]2−: In this homoleptic complex, all six ligands are chloride (Cl−) ions, coordinated to the nickel (Ni2+) ion.
Notes
Students should refer to the answer according to their questions.
RELATED QUESTIONS
Write the structure and IUPAC names of all the metamers represented by formula C4H10
What is meant by unidentate ligand?
Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complex:
cis-[CrCl2(en)2]Cl
Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complex:
(NH4)2[CoF4]
Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complex:
[Mn(H2O)6]SO4
Amongst the following, the most stable complex is:
Write IUPAC names of the following compounds

Write applications of co-ordination compounds in medicine and electroplating.
What happens when PCl5 is heated? Write the equations involved.
Write IUPAC name of the following Complex [Cr(NH3)3Cl3]
Complete the following reactions
NH3+3Cl2(excess) ---->
Write the structures of compounds A, B and C in the following reactions

Write the IUPAC name of the following coordination compound:
[Cr(NH3)4(H2O)2]Cl3
The ligand triethylenetetramine is _______.
Write structures of compounds A and B of the following reaction :

Which of the following represents a chelate ligand?
Ligand (en) is an example of ___________.
A group of atoms can function as a ligand only when:
The oxidation number of Fe in K4[Fe(CN)6] is ____________.
When 0.1 mol \[\ce{CoCl3 (NH3)5}\] is treated with excess of \[\ce{AgNO3}\], 0.2 mol of \[\ce{AgCl}\] are obtained. The conductivity of solution will correspond to ______.
Which of the following complexes are homoleptic?
(i) \[\ce{[Co(NH3)6]^{3+}}\]
(ii) \[\ce{[Co(NH3)4 Cl2]^{+}}\]
(iii) \[\ce{[Ni(CN)4]^{2-}}\]
(iv) \[\ce{[Ni(NH3)4Cl2]}\]
Arrange the following complexes in the increasing order of conductivity of their solution:
[Co(NH3)3Cl3], [Co(NH3)4Cl2]Cl, [Co(NH3)6]Cl3, [Cr(NH3)5Cl]Cl2
A complex of the type \[\ce{[M(AA)2X2]^{n+}}\] is known to be optically active. What does this indicate about the structure of the complex? Give one example of such complex.
Match the compounds given in Column I with the oxidation state of cobalt present in it (given in Column II) and assign the correct code:
| Column I (Compound) | Column II (Oxidation state of Co) |
| A. \[\ce{[Co(NCS)(NH3)5](SO3)}\] | 1. + 4 |
| B. \[\ce{[Co(NH3)4 CL2]SO4}\] | 2. 0 |
| C. \[\ce{Na4[Co(S2O3)3]}\] | 3. + 1 |
| D. \[\ce{[Co2(CO)8]}\] | 4. + 2 |
| 5. + 3 |
Assertion: \[\ce{Cr(H2O)6]Cl2 and [Fe(H2O)6]Cl2}\] are reducing in nature.
Reason: Unpaired electrons are present in their d-orbitals.
In which of the following compounds, the oxidation number of iodine is fractional?
The co-ordinate number and the oxidation state of the element E in the complex [E(en)2(C2O4)]NO2 are respectively?
The complex which has no d electrons in the central atom is:-
According to IUPAC nomenclatures, sodium nitroprusside is named as
Which of the following ligands can exhibit linkage isomerism?
Metal attached with EDTA in an octahedral complex, has coordination number ______.
What are Homoleptic complexes?
Why chelate complexes are more stable than complexes with unidentate ligands?
Given below are two statements.
Statement I: In CuSO4·5H2O, Cu-O bonds are present.
Statement II: In CuSO4·5H2O, ligands coordinating with Cu(II) ion are O- and S-based ligands.
In light of the above statement, choose the correct answer from the options given below.
The equivalents of ethylene diamine required to replace the neutral ligands from the coordination sphere of the trans-complex of CoCl3.4NH3 is ______. (Round off to the Nearest Integer).
The following ligand is:

Total sodium ions which are present in one formula unit of sodium ethane-1, 2-diaminetetraacetatochromate (II) and sodium hexanitrito cobaltate (III) are ______.
Which of the following species cannot act as a ligand? Give reason.
Is the central metal atom in coordination complexes a Lewis acid or a Lewis base? Explain.
What is meant by the chelate effect? Give an example.
In the complex ion \[\ce{[CoCl(en)2ONO]+}\], the coordination number and the oxidation number of the central metal ion are ______ and ______.
Explain the ligand.
Explain the following, giving two examples:
Heteroleptic
Give two examples of ambidentate ligands.
