G. Mechanisms that Racemize the &Lambda and &Delta Forms of Metal Tris Chelates
1. Non-dissociative Mechanisms: b. The Rây-Dutt Mechanism for GaL3

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A: &Lambda -GaL3

Color code the O atoms consistent
with the color scheme for
assigning absolute configurations:

color the one O atom that begins on a back face and moves to a front face
color the one O atom that begins on a front face and moves to a back face

Align Views with those in the middle frame

Note that the Rây-Dutt Mechanism also
interconverts the &Lambda and &Delta isomers
Calculated Rây-Dutt Transition State
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Viewing Calculated Motions
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  3. Compare to A

  4. Compare final point (b) to B

B: &Delta -GaL3

Color code the O atoms consistent those in the frames to the left:

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For Information on our GaL3 Complex
and on our Computational Model