(A) The color of the coordination compounds depends on the crystal field splitting energy. Arrange the following complex ions in order of descending order of absorption of wavelength of light in the visible region. [Co(NH3)6]3+ , [Co(CN)6]3- , [Co(H2O)6]3+ (B) Usually, tetrahedral complexes are high spin rather than low spin. Explain why. (C) draw the MO diagrams and write the electronic configuration for the complex ion [Fe(NH3)6]3+ and determine the number of unpaired electrons. (D) Explain the nature of bonding in ligand-to-metal charge transfer (LMCT) complex that responsible for the intense purple color of [MnO4]-
Added by Nerea W.
Close
Step 1
Strong field ligands cause a larger splitting, while weak field ligands cause a smaller splitting. The order of ligand strength is as follows: CN- > NH3 > H2O. Show more…
Show all steps
Your feedback will help us improve your experience
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
(A) The color of the coordination compounds depends on the crystal field splitting energy. Arrange the following complex ions in order of descending order of absorption of wavelength of light in the visible region. [Co(NH3)6]3+, [Co(CN)6]3-, [Co(H2O)6]3+ (B) Usually, tetrahedral complexes are high spin rather than low spin. Explain why. (C) draw the MO diagrams and write the electronic configuration for the complex ion [Fe(NH3)6]3+ and determine the number of unpaired electrons. (D) Explain the nature of bonding in ligand-to-metal charge transfer (LMCT) complex that responsible for the intense purple color of [MnO4]-
Sri K.
Adi S.
(a) The [Ni(OH2)6]2+ ion is green, whereas [Ni(NH3)6]2+ ion is purple and [Ni(en)3]2+ is violet. Which complex ion absorbs light with the shorter wavelength? Explain. (b) The isoelectronic ions VO4 3- (colorless), CrO42- (yellow), and MnO4- (purple) all have intense charge transfer transitions. The wavelengths of these transitions increase in this series, with MnO4- having its charge transfer absorption at the longest wavelength. Suggest a reason for this trend. (c) Coordination compounds undergo two main mechanisms. Does the complex [CoCl(NH3)5]Cl2 prefer SN1 mechanism or SN2 mechanism? Give reasons for your choice and write equations to explain the mechanism.
Recommended Textbooks
Chemistry: Structure and Properties
Chemistry The Central Science
Chemistry
Watch the video solution with this free unlock.
EMAIL
PASSWORD