New Organophosphorus Proligands and Amide Precursors: Crystal and Molecular Structures of Ph2P(X)NH(C6H3Pri 2-2,6) (X = O, S) and (OPPh2)(O2SMe)N(C6H3Pri 2-2,6)
Articles > Article · 2010
Authors: Alpar POLLNITZ, Sevil İRİŞLİ, Cristian SILVESTRU, Anca SILVESTRU
Phosphorus, Sulfur, and Silicon and the Related Elements, Journal Indexed in SCI Expanded, International, WoS, 2010, vol 185, pp 910-919
DOI: 10.1080/10426500903029464
Summary
The new organophosphorus proligand (OPPh2)(O2SMe)NR (R = C6H3Pri 2–2,6) (3) was prepared as a white crystalline solid by reacting the lithiated compound Li[Ph2P(O)NR] with MeSO2Cl in a 1:1 molar ratio. The precursor Ph2P(O)NHR (1), as well as its thio analogue Ph2P(S)NHR (2), were obtained in the reaction between the lithiated amine RNHLi and the corresponding organophosphorus chloride. All compounds were characterized by multinuclear (1H, 13C, and 31P) NMR spectroscopy. The molecular structures of 1–3 were established by single-crystal X-ray diffraction. A zigzag polymeric chain is formed in the crystals of 1 and 2 by hydrogen N–H···X (X = O, S) bonding, while the crystal of 3 contains discrete monomeric units with a syn–syn conformation of the O˭P(C)2–N–S(C)(˭O)2 skeleton. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file.