Crystal and molecular structure of [(C6H5)2P(=0)(CH2CH2N(CH3)3 +][I−

Abstract

The title compound crystallizes in the centrosymmetric triclinic space group $$P\bar 1$$ withZ=4. The crystallographic asymmetric unit contains two independent cations; interatomic distances within these include P=O=1.47(1) and 1.47(1) A, P−C6H5=1.78(2)–1.81(1)A and P−CH2CH2NMe3 +=1.80(1) and 1.81(1) A. The phosphine oxide moiety is involved in intermolecular hydrogen bonding ()...H−C, with O...H≥2.42A) and the iodide is involved in I...H−C contacts with I...H≥3.10A.