(a) Determine the metal oxidation state and d-electron configuration in the following complexes (bpy = 2,2'-bipyridine): (i) [Co(NH3)Cl]2+ (ii)[Fe(CşHs)2] (iii) [W(CO)4(PPh3)2] (iv) [Mo2(CH3COO)4] (v) MnO₂
(a) Determine the metal oxidation state and d-electron configuration in the following complexes (bpy = 2,2'-bipyridine): (i) [Co(NH3)Cl]2+ (ii)[Fe(CşHs)2] (iii) [W(CO)4(PPh3)2] (iv) [Mo2(CH3COO)4] (v) MnO₂
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter20: Chemistry Of Selected Transition Elements And Coordination Compounds
Section: Chapter Questions
Problem 105QRT
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Question
Answer all please
![(a) Determine the metal oxidation state and d-electron configuration in the following
complexes (bpy = 2,2'-bipyridine):
(i)[Co(NH3)Cl]2+
(ii) [Fe(CşHs)z]
(iii) [W(CO)4(PPH3)2]
(iv) [Mo2(CH3COO)4]
(v) MnO₂
(b) The enthalpy of sublimation (atomization) of Re is 704 kJ mol-¹. Explain why it is
significantly higher than that of Mn, which is 221 kJ mol-¹.
(c) What kind of electronic transitions are responsible for the colours of the following species?
For each case, state the type of the electronic transition, the orbitals between which the
transition occurs and briefly explain the reason for your assignment.
(i) Ruby (contains Cr³+ in Al2O3), red.
(ii) Sapphire (contains Fe²+ and Ti4 in Al2O3), intense blue.
(iii) Cr₂O72, deep orange.
(iv) Zn(Porphyrin), deep red-purple.
(v) [WO4]2, colourless but shows a very strong band in the UV.
(vi) [Fe(bpy)3]2+, deep red.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb7a09109-4597-430e-a6f4-7beef1210f29%2F0ac5e3cb-7f3f-42ce-a63f-5bcdb81bfac7%2Fm4svokc_processed.jpeg&w=3840&q=75)
Transcribed Image Text:(a) Determine the metal oxidation state and d-electron configuration in the following
complexes (bpy = 2,2'-bipyridine):
(i)[Co(NH3)Cl]2+
(ii) [Fe(CşHs)z]
(iii) [W(CO)4(PPH3)2]
(iv) [Mo2(CH3COO)4]
(v) MnO₂
(b) The enthalpy of sublimation (atomization) of Re is 704 kJ mol-¹. Explain why it is
significantly higher than that of Mn, which is 221 kJ mol-¹.
(c) What kind of electronic transitions are responsible for the colours of the following species?
For each case, state the type of the electronic transition, the orbitals between which the
transition occurs and briefly explain the reason for your assignment.
(i) Ruby (contains Cr³+ in Al2O3), red.
(ii) Sapphire (contains Fe²+ and Ti4 in Al2O3), intense blue.
(iii) Cr₂O72, deep orange.
(iv) Zn(Porphyrin), deep red-purple.
(v) [WO4]2, colourless but shows a very strong band in the UV.
(vi) [Fe(bpy)3]2+, deep red.
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