Coordination CompoundHard
Question
Which of the following is not correctly matched ?
Options
A.[Fe(en)3]3+ - sp3d2 and paramagnetic
B.[FeCl4]2- - sp3 and paramagnetic
C.[Fe(CN)6]3- - d2sp3 and paramagnetic
D.[Fe(CO)2(NO+)2] - sp3 and diamagnetic
Solution
(A) [Fe(en)3]3+ - d2sp3 with one unpaired electron. ′en′ is a strong field chelating ligand and thus compels for the pairing of electrons to have d2sp3 hybridisation. It is paramagnetic with one unpaired electron (valence shell electron configuration, 3d5)
(B) [FeCl4]2- - sp3 with four unpaired electrons. It is paramagnetic with four unpaired electrons (valence shell electron configuration, 3d6).
(C) [Fe(CN)6]3- - d2sp3 with one unpaired electron. ′CN-′ is a strong field ligand and, therefore, it compels for pairing of electrons to have d2sp3 hybridisation. It is paramagnetic with one unpaired electron (valence shell electron configuration, 3d5)
(D) [Fe(CO)2(NO+)2] - sp3 and diamagnetic. Iron is in -II oxidation state. So,
[Fe(CO)2(NO+)2]
sp3hybridisation
(B) [FeCl4]2- - sp3 with four unpaired electrons. It is paramagnetic with four unpaired electrons (valence shell electron configuration, 3d6).
(C) [Fe(CN)6]3- - d2sp3 with one unpaired electron. ′CN-′ is a strong field ligand and, therefore, it compels for pairing of electrons to have d2sp3 hybridisation. It is paramagnetic with one unpaired electron (valence shell electron configuration, 3d5)
(D) [Fe(CO)2(NO+)2] - sp3 and diamagnetic. Iron is in -II oxidation state. So,
[Fe(CO)2(NO+)2]
sp3hybridisation
Create a free account to view solution
View Solution FreeMore Coordination Compound Questions
A compound is made by mixing cobalt (III) nitrite and potassium nitrite solutions in the ratio of 1 : 3. The aqueous sol...Which of the following is correct for the Zeise′s salt ?...In the isoelectronic series of metal carbonyl, the C–O bond strength is expected to increase in the order....Which of the following pairs will show the same magnetic moment (′spin only′)?...Low spin complex is formed by :...