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
Spin Ignore Hydrogens
Color code the O atoms consistent
with the color scheme for
assigning absolute configurations:
Back Os green/Front Os red
color the one O atom that begins on a back face and moves to a front face Blue
color the one O atom that begins on a front face and moves to a back face Orange

Align Views with those in the middle frame

Note that the Rây-Dutt Mechanism also
interconverts the &Lambda and &Delta isomers
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Calculated Rây-Dutt Transition State
Viewing Tools:
Spin Ignore Hydrogens
Ignore Carbons and Hydrogens
Color Code O Atoms
Viewing Calculated Motions
For Any View:
  1. Vibrational Mode On
  2. Vectors on

  3. Compare to A

  4. Compare final point (b) to B
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B: &Delta -GaL3
Spin Ignore Hydrogens
Color code the O atoms consistent those in the frames to the left:
Color Code O Atoms
Align Views with those in the middle frame




For Information on our GaL3 Complex
and on our Computational Model