Silyl-nitrogen compounds¹ : Part IX - Reactions of pentasila-phosphapentazene with group VI and VII compounds

Abstract

Pentakis(trimethylsilyl )-3-phospha-2-pentazene (Me₃Si)₂N-N(SiMe₃)- P=N-N(SiMe₃)₂ (<b style="mso-bidi-font-weight:normal">1</b>) reacts with sulphur as well as DMSO to form [2+1]-cycloadducts. 3-tris(trimethylsilyl)hydrazino-2- bis( trimethylsilyl)-amino-l-thia-2-amino-3- phosphacyclopropane and 1, 1 -dimethyl- 3-tris( trimethylsilyl)- hydrazino-3- bis(trimethylsilyl)hydrazono- l-thia-2-oxa-3-

<span style="font-size:14.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:="" "times="" roman";mso-ansi-language:en-us;mso-fareast-language:en-us;="" mso-bidi-language:ar-sa"="">phosphacyclopropane, respectively. Thionyl chloride and chlorine provide the oxidative addition product . [tri (trimethylsilyl) hydrazino] -[bis trimethylsilyl) hydrazono] (dichloro)-phosphorane . Bromine and iodine undergo insertion reaction to form a P(III ) derivative. [tris (trimethylsilyl ) hydrazino] [bis(trimethylsilyl ) (bromo/ -iodo)hydrazino] (bromo/iodo) phosphine.</span>