Synthesis and structure of pentaphenyl-telluronium salts of perchlorate and tetrakis{3,5-bis(trifluoromethyl)phenyl}borate: hypervalent onium compounds

✍ Scribed by Mao Minoura; Takahiro Mukuda; Takao Sagami; Kin-ya Akiba

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 115 KB
• Volume: 12
• Category: Article
• ISSN: 1042-7163
• DOI: 10.1002/hc.1057

✦ Synopsis

Abstract

The reaction of pentaphenyltellurium chloride 2 with silver perchlorate afforded the pentaphenyltelluronium salt, Ph~5~Te^+^ClO, (1b), and treatment of 2 with silver triflate and sodium tetrakis{3,5‐bis(trifluoromethyl)phenyl}borate provided Ph~5~Te^+^[3,5‐(CF~3~)~2~C~6~H~3~]~4~B^−^ (1c), which were isolated as stable yellow solids. X‐ray crystallographic analyses of the hypervalent telluronium salts revealed square‐pyramidal geometry around the tellurium, which are rare examples for penta‐substituted main group element compounds. © 2001 John Wiley & Sons, Inc. Heteroatom Chem 12:380–384, 2001