3AL+Lecture+8

3AL+Lecture+8 - Structure Determination X-Ray...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Structure Determination X-Ray Crystallography NMR Spectroscopy Mass Spectrometry Spectroscopy Absorption of Electromagnetic Radiation: Something Changes from a Lower Energy State to a Higher Energy State E = h Energy ( E = h ) > 300 (kcal) 300 40 40 2 2 0.1 10-4 X-rays Electronic transitions of core electrons in atoms UV Vis. Electronic transitions of valence electrons Near IR Far IR Micro- waves Vibrational transitions Rotational transitions Radio- waves 10 nm 50 400 800 20 m 1mm 100mm Electromagnetic Spectrum 10-6 1m Nuclear Magnetic Resonance (NMR) Spectroscopy Nuclear (spins) Resonating (when electromagnetic radiation is applied) in a Magnetic Field 1 H 13 C 19 F 31 P E = h B o Nuclear Spin Nuclei with a spin equal to zero are NMR inactive Nuclei with a spin not equal to zero are NMR active 1 H, 13 C, 15 N, 19 F, 31 P all have a spin equal to 1/2 Spinning Nuclei Spinning Nuclei Create a Small Magnetic Field Spin( ) Nuclei in an External Magnetic Field E E...
View Full Document

Page1 / 18

3AL+Lecture+8 - Structure Determination X-Ray...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online