Molecular structure of the chelate complex (3,5-dimethylbenzyl)diphenylphosphitodicarbonyl-chromium

The chelate phosphitoalkylarenedicarbonylchromium complex has been studied by single-crystal X-ray diffraction. The presence of the short bridge (CH₂O) leads to noticeable distortions of the molecular geometry which may be the reason why complexes of this type containing one more chelate cycle of the same size could not be isolated. The CrP bond in the complex 2.201 Å, is the shortest CrP bond reported thus far.