Rotational Isomers of a 1, 2-Diphenyl-3, 4-diphosphinidenecyclobutene
The group-6 metal tetracarbonyl complexes of 3,4-diphosphinidenecyclobutenes protected with the 2,4-di-<I>t</I>-butyl-6-methylphenyl group were prepared and one of the rotamers, ligated with W(CO)<SUB>4</SUB>, was confirmed by X-ray analysis while the other was analyzed by a chiral HPLC column.
- Chemistry letters
Chemistry letters 1997(1), 87-88, 1997-01
The Chemical Society of Japan