Lab #8 - The Spectrochemical Series

Lab #8 - The Spectrochemical Series - Results and...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Results and Discussion: Transition metal complexes come in a variety of colors which arise from the absorption of visible light by the complexes. The color of the light absorbed is complementary to the color that is seen. The wavelength of the colors of the absorbed light can be calculated by the difference in energy (ΔE) using the equation E = hc / λ. The different energy levels that arise from transition metal complexes can be explained by the crystal field theory. The crystal field theory explains that when the negatively charged ligands are brought near the transition metal, the energies of the five degenerate d orbitals change by different amounts. The difference in energy of the orbitals is called the crystal field splitting (Δ). The magnitude of the crystal field splitting depends on the identity of the transition metal and the ligand. If the ligand is kept constant, the crystal field splitting varies according to a certain order called the spectrochemical series. The series increases in the following order… Br - < Cl - < F - < H 2 O < NH 3 An unidentified sample of one of the previous complexes (Complex B) was synthesized and purified in this lab by my group. The other (Complex A) was synthesized and purified by other groups in the lab. The wavelengths of maximum absorbance of these two complexes along wit the remaining (Complexes C, D & E) were measured.
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern