Chemistry Class 12 NCERT Solutions: Chapter 9 Coordination Compounds Part 9
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Q: 24. Write down the IUPAC name for each of the following complexes and indicate the oxidation state, electronic configuration, and coordination number. Also, give stereochemistry and magnetic moment of the complex:
(i)
(ii)
(iii)
(iv) Cs[FeCl_4]
(v)
Answer:
(i) Potassium diaquadioxalatochromate (III) trihydrated.
Oxidation state of chromium
Electronic configuration:
Coordination number
Shape: octahedral
Stereochemistry:
Q 24 I Trans and Cis
Q 24 i Trans and Cis
Q 24 I 1 Trans is Optically Inactive
Q 24 i 1 Trans is Optically Inactive
Q 24 I 2 Cis is Optically Active
Q 24 i 2 Cis is Optically Active
Magnetic moment,
(ii)
IUPAC name: Pentaamminechloridocobalt(III) chloride
Oxidation state of
Coordination number
Shape: octahedral.
Electronic configuration:
Q 24 Ii 2 Isomers
Q 24 ii 2 Isomers
Magnetic Moment
(iii)
IUPAC name: Trichloridotripyridinechromium (III)
Oxidation state of chromium
Electronic configuration for
Coordination number
Shape: octahedral.
Stereochemistry:
Q 24 Iii Facial Isomer and Meriodional Isomer
Q 24 iii Facial Isomer and Meriodional Isomer
Both isomers are optically active. Therefore, a total of isomers exist.
Magnetic moment,
(iv)
IUPAC name: Caesium tetrachloroferrate (III)
Oxidation state of
Electronic configuration of
Coordination number
Shape: tetrahedral
Stereochemistry: optically inactive
Magnetic moment:
(v)
Potassium hexacyanomanganate(II)
Oxidation state of manganese
Electronic configuration:
Coordination number
Shape: octahedral.
Stereochemistry: optically inactive
Magnetic moment,