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The Stable Pentamethylcyclopentadienyl Cation
Author(s) -
Lambert Joseph B.,
Lin Lijun,
Rassolov Vitaly
Publication year - 2002
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20020415)41:8<1429::aid-anie1429>3.0.co;2-j
Subject(s) - cyclopentadienyl complex , boron , salt (chemistry) , derivative (finance) , crystal structure , ion , chemistry , crystallography , inorganic chemistry , organic chemistry , catalysis , financial economics , economics
More than 100 years after the cyclopentadienyl anion appeared in the literature, the first cyclopentadienyl cation, the pentamethyl derivative C 5 Me 5 + , has now been prepared in a single step as the tetrakis(pentafluorophenyl)borate salt. This material is crystalline and stable at room temperature for weeks. The crystal structure of C 5 Me 5 + (see picture) reveals localized bonding.