摘要:
The preparation of the layered [3.3]orthocyclophane tricarbonylchromium mono- and bis complexes, 4 and, are described. X-ray crystallographic analysis reveals the fact that the distances and the dihedral angle between the planes of the two benzo rings in mono complex 4 decrease as compared to those in 1. This is due to the decrease in pi electron density in one benzo unit.