Coordination Chemistry
10 Questions
2 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the value of Δ for the complex [Fe(CN)6]3-?

  • 40,000 cm-1
  • 35,000 cm-1 (correct)
  • 13,700 cm-1
  • 22,000 cm-1
  • What is the energy value of P for both complexes?

  • 22,000 cm-1 (correct)
  • 13,700 cm-1
  • 35,000 cm-1
  • 40,000 cm-1
  • Which complex has a higher energy difference between the t2g and eg orbitals?

  • [Fe(CN)6]3- (correct)
  • It cannot be determined from the given information
  • Both have the same energy difference
  • [Fe(H2O)6]3+
  • What is the relationship between Δ and P for the complex [Fe(CN)6]3-?

    <p>Δ &gt; P</p> Signup and view all the answers

    What is the value of Δ for the complex [Fe(H2O)6]3+?

    <p>13,700 cm-1</p> Signup and view all the answers

    Which complex has a lower energy difference between the t2g and eg orbitals?

    <p>[Fe(H2O)6]3+</p> Signup and view all the answers

    What is the relationship between Δ and P for the complex [Fe(H2O)6]3+?

    <p>Δ &lt; P</p> Signup and view all the answers

    Why is the energy difference between the t2g and eg orbitals important in transition metal complexes?

    <p>It determines the magnetic properties of the complex</p> Signup and view all the answers

    What is the primary difference between the complexes [Fe(CN)6]3- and [Fe(H2O)6]3+?

    <p>The ligands surrounding the metal</p> Signup and view all the answers

    What is the significance of the energy value P in transition metal complexes?

    <p>It represents the energy of the metal-ligand interactions</p> Signup and view all the answers

    Study Notes

    Bidentate Ligands

    • A bidentate ligand has two ends (coordination atoms) that bind to the central metal ion, represented by A and B.
    • The straight line connecting the two groups trans to each other passes through the center where the metal ion is placed.

    [M(AA)2]n Type Complexes

    • [M(AA)2]n type complexes have a central metal ion (M) and symmetrical bidentate ligands (AA).
    • The central metal atom or ion makes available a number of empty s, p, and d atomic orbitals equal to its coordination number, which is 4.

    Geometrical Orientations of d-Orbitals

    • The five d-orbitals have specific geometrical orientations and shapes.

    Crystal Field Splitting

    • Crystal field splitting occurs due to the arrangement of ligands around the central metal ion.
    • The arrangement of ligands affects the energy levels of the d-orbitals.

    Octahedral Complexes

    • In octahedral complexes, six ligands are arranged octahedrally around the central metal ion.
    • The repulsive forces exerted by the ligands are strongest along the x, y, and z axes.
    • Examples of octahedral complexes include [Fe(CN)6]3- and [Fe(H2O)6]3+.
    • The crystal field splitting energy (Δ) and the pairing energy (P) are important parameters in octahedral complexes.
    • Δ = 35,000 cm-1 and P = 22,000 cm-1 for [Fe(CN)6]3-.
    • Δ = 13,700 cm-1 and P = 22,000 cm-1 for [Fe(H2O)6]3+.
    • The energy level diagram shows the splitting of the d-orbitals into eg and t2g levels.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    This quiz covers the concepts related to coordination chemistry, focusing on the structural arrangement of metal ions and ligands. It assesses your understanding of the metal ion's placement and the resulting molecule's properties.

    More Like This

    Use Quizgecko on...
    Browser
    Browser