Synthesis and Crystal Structure of 5,5-Dimethyl-2-( p-methylanilino)-2-oxo- 1,3,2-diazaphosphorinane

The crystal structure of 5,5-dimethyl-2-( p-methylanilino)-2-oxo-1,3,2-diazaphosphorinane has been determined. The P ‐N bond lengths are significantly shorter than the P ‐N single bond. The P=O bond is placed in an equatorial position and is slightly longer than the PO double bond length. The molecule is obtained in the form of a two dimensional polymer via intermolecular ‐N‐H·O=P‐ and ‐N‐H·N‐ hydrogen bonds. A weak C‐H·O hydrogen bond is also observed in the