Cooperative Motion of the Chiral 1-Methoxy-carbonylethyl Groups

1 Cooperative Motion of the Chiral 1-Methoxy-carbonylethyl Groups 

3 Racemizations of Alkyl Groups in Cobaloxime Complex Crystals 

The question may be answered in the structural change in complex of 2, which has two pyridine complexes and solvate methanol molecules in its asymmetric unit of the P2i cell [35, 36]. The crystal structure viewed along the c axis before photoirradiation at 223 K is shown in Fig. 3.24. Two crystallographically independent complexes, A and B, without axial ligands and surrounding methanol molecules are shown in Fig. 3.25a. The 1-mce group of A has syn, while that of B has anti conformation. 

24 Crystal structure of (/J-l-mce)(py)cobaloxime with methanol solvent viewed along the c axis at 223 K before the irradiation. Small atoms of methanol molecules with dotted bonds are disordered atoms 

---