𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The preparation and characterization of binary phosphorus–selenium rings

✍ Scribed by Mark J. Pilkington; Alexandra M. Z. Slawin; David J. Williams; Paul T. Wood; J. Derek Woollins

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
434 KB
Volume
1
Category
Article
ISSN
1042-7163

No coin nor oath required. For personal study only.

✦ Synopsis

Depending on the ratio

of reactants, reaction of (PPh), (1) with grey selenium gives (PhPSe2I2 (21, (PhP)3Se2 (3), (PhP)4Se (4), and (PhP),Se, (5). The compounds have been characterized by multielement N M R , mass spectrometry, microanalyses, and, in the case of 4, Xray crystallography. 4 consists of a puckered 5-membered ring with all four phenyl substituents axial; the average P-P and P-Se bond lengths are 2.194 and 2.271 A respectively.

📜 SIMILAR VOLUMES

Formation and Reactivity of Phosphorus–S
Formation and Reactivity of Phosphorus–Selenium Rings
✍ Guoxiong Hua; J. Derek Woollins 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 496 KB 👁 2 views

## Abstract **Lawesson reagent for selenium fans**: Phosphorus selenium heterocycles and, in particular, [PhPSe~2~]~2~ (known as Woollins' reagent) are proving valuable in the synthesis of new heterocycles and for the insertion of selenium into organic substrates. Incorporation of phosphorus and se