List of Animations

Periodic Table reporting chemical shifts and scalar coupling for the various nuclei

Short animation on the precession of spin 1/2 nuclei and the effect of changing the field

Short animation on the pulse showing pulsing along X, Y, -X and -Y axis. A composite pulse is also illustrated

Short Animation that describe the usage of field gradient with spin echo experiment

An Animation that reviews various aspect of NMR:

Chemical shift (Inductive effect, Anisotropy of various bond, Electronic effect, Resonance effect)
Coupling constant (spin 1/2 and other spin)
Integration
Distance between nuclei (relaxation and NOE)
Molecular motion (conformational equilibrium, Exchange phenomenon)

An Animation that reviews more specifically Scalar Couplings

The origin of scalar coupling (the origin of the sign of the couplings)
The size of Geminal coupling as a function of the influence of the valence, the orientation of neighbor unsaturated system, the presence of electronegative substituents
Vicinal coupling and Karplus equation
Longer range coupling (allylic, homoallylic, Zig Zag pathway)
Heteronuclear coupling
an example on how useful heteronuclear coupling can be (to distinguish between isomers).

An animation that demonstrate Inversion Recovery for measuring T1 Spin-Latice relaxation time. (select a delay and click on "Play")

An animation that review different aspect of refocussing pulses (including Bird and Tango pulses) (Select the refocus sequence from the menu and click on "Play")

Animation on the APT pulse sequence

Animation on the INEPT pulse sequence

An animation that explains the usage of various 2D sequences with an example (disaccharide)

Homonuclear 3D NMR (TOCSY-NOESY)

Short animation on 3D HSQC-TOCSY

Short animation on 3D HNCA

Proton chemical shifts on some model compounds

Proton coupling constants

Carbon-13 chemical shifts on some model compounds

Carbon13 couplings

Scalar Couplings in Protein

Other WEB Animations :

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