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Isomerism in Coordination Compounds
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Isomerism in Coordination Compounds
Isomerism in Coordination Compounds
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1
Question
What are isomers in the context of coordination compounds?
Answer
Two or more compounds that have the same chemical formula but a different arrangement of atoms.
2
Question
Why do isomers exhibit different properties?
Answer
Because of the different arrangement of atoms.
3
Question
What are the two principal types of isomerism in coordination compounds?
Answer
Stereoisomerism and structural isomerism.
4
Question
Name the subtypes of stereoisomerism in coordination compounds.
Answer
Geometrical isomerism and optical isomerism.
5
Question
Name the subtypes of structural isomerism in coordination compounds.
Answer
Linkage isomerism, coordination isomerism, ionization isomerism, and solvate isomerism.
6
Question
How do stereoisomers differ from one another?
Answer
They have different spatial arrangements.
7
Question
How do structural isomers differ from one another?
Answer
They have different bonds.
8
Question
What is the key distinction between stereoisomers and structural isomers?
Answer
Stereoisomers differ in spatial arrangement while structural isomers differ in bonds.
9
Question
In what type of complexes does geometric isomerism arise?
Answer
Heteroleptic complexes.
10
Question
What primarily causes geometric isomerism in coordination complexes?
Answer
Different arrangements of the ligands.
11
Question
Which coordination numbers provide important examples of geometric isomerism?
Answer
Coordination numbers 4 and 6.
12
Question
What geometry for coordination number 4 exhibits geometric isomerism?
Answer
Square planar.
13
Question
What formula represents square planar complexes showing geometric isomerism?
Answer
\( \ce{MX2L2} \) where X and L are unidentate ligands.
14
Question
In the cis isomer of square planar \( \ce{MX2L2} \), what is the position of the two X ligands?
Answer
Adjacent to each other.
15
Question
In the trans isomer of square planar \( \ce{MX2L2} \), what is the position of the two X ligands?
Answer
Opposite to each other.
16
Question
Give a specific example of a square planar complex with cis and trans isomers.
Answer
\( \ce{[Pt(NH3)2Cl2]} \).
17
Question
Is geometric isomerism possible in tetrahedral geometry for \( \ce{MX2L2} \)?
Answer
No.
18
Question
What geometry shows similar geometric isomerism to square planar for coordination number 6?
Answer
Octahedral.
19
Question
What formula for octahedral complexes exhibits cis-trans isomerism?
Answer
\( \ce{[MX2L4]} \).
20
Question
In octahedral \( \ce{[MX2L4]} \), how can the two X ligands be oriented?
Answer
Cis or trans to each other.
21
Question
Name an octahedral complex that shows cis and trans geometric isomers.
Answer
\( \ce{[Co(NH3)4Cl2]+} \).
22
Question
How do the ligand positions differ in cis versus trans \( \ce{[Pt(NH3)2Cl2]} \)?
Answer
Cis has Cl ligands adjacent; trans has them opposite.
23
Question
Why is coordination number 4 in square planar geometry prone to geometric isomerism?
Answer
It allows adjacent or opposite ligand positions in \( \ce{MX2L2} \).
24
Question
Why does tetrahedral \( \ce{MX2L2} \) lack geometric isomers?
Answer
All ligand positions are equivalent due to high symmetry.
25
Question
In cis \( \ce{[Co(NH3)4Cl2]+} \), what is the relative position of the Cl ligands?
Answer
Adjacent to each other.
26
Question
In trans \( \ce{[Co(NH3)4Cl2]+} \), what is the relative position of the Cl ligands?
Answer
Opposite to each other.
27
Question
What type of ligands are X and L in square planar \( \ce{MX2L2} \)?
Answer
Unidentate.
28
Question
How many geometric isomers exist for square planar \( \ce{MX2L2} \)?
Answer
Two: cis and trans.
29
Question
How many geometric isomers exist for octahedral \( \ce{[MX2L4]} \)?
Answer
Two: cis and trans.
30
Question
Which isomerism type is illustrated by \( \ce{[Pt(NH3)2Cl2]} \)?
Answer
Geometric isomerism.