Related Experiment Video
Updated: Apr 9, 2026

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
Published on: November 9, 2019
Capturing C90 Isomers as CF3 Derivatives: C90 (30)(CF3)14, C90 (35)(CF3)16/18 , and C90 (45)(CF3)16/18
Nadezhda B Tamm1, Sergey I Troyanov2
1Chemistry Department, Moscow State University, Leninskie gory, 119991, Moscow, Russia.
Abstract:
High-temperature trifluoromethylation of a C90 isomeric mixture with CF3 I followed by HPLC separation of C90 (CF3)n isomers resulted in the isolation of several individual C90 (CF3)14-18 compounds. Single crystal X-ray diffraction with the use of synchrotron radiation resulted in the structure determination of C90 (30)(CF3)14 , C90 (35)(CF3)16/18 , and C90 (45)(CF3)16/18 . Their addition patterns are discussed and compared with the known isomers C90 (30)(CF3)18 and C90 (35)(CF3)14 , respectively. The presence of the most stable C90 isomer, C90 (45), in the fullerene soot has been confirmed for the first time.
Related Concept Videos
Stereoisomerism of Cyclic Compounds
[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement
[3,3] Sigmatropic Rearrangement of Allyl Vinyl Ethers: Claisen Rearrangement
Preparation of 1° Amines: Hofmann and Curtius Rearrangement Overview
Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration
Disubstituted Cyclohexanes: cis-trans Isomerism
In cyclohexane, the substituents can occupy different positions generating distinct isomers....

