Mass spectrometric identification of multicage fullerene cycloadducts

Perfluoroalkylfullerenes

“… 100 , 102 A sealed-ampoule reactor was also used to trifluoromethylate C 60 F 18 , leading to mixed C 60 F n (CF 3 ) m derivatives (T1#74), and Na n ·C 60 , leading to complex dimeric species (T1#95). 92 The yields of isolated pure TMFs have typically not been reported, but it is reasonable to expect mol % yields in low single digits. Yields of 84 and 78 mol % were reported for an ampoule synthesis of 60-12-1 (T1#36), 36 , 140 but these yields could not be reproduced by the authors of ref ( 95 ).…”

Competitive retro‐cycloaddition reactions in heterocyclic fullerene bis‐adducts ions: selective removal of the heterocyclic moieties

“…Since the discovery of fullerenes, mass spectrometry (MS) has been a useful technique to determine the gas‐phase chemistry of these compounds and also to characterize the huge number of chemically modified fullerenes that have been prepared so far . Furthermore, fullerenes and other carbon nanoforms have been used as matrices in MS studies .…”

“…Since the discovery of fullerenes, mass spectrometry (MS) has been a useful technique to determine the gas-phase chemistry of these compounds and also to characterize the huge number of chemically modified fullerenes that have been prepared so far. [1,2] Furthermore, fullerenes and other carbon nanoforms have been used as matrices in MS studies. [3,4] Although matrix-assisted laser desorption/ionization (MALDI) and electrospray ionization (ESI) are the most frequently used ionization methods for the analysis of fullerenes, new techniques such as atmospheric pressure photoionization (APPI) have also been successfully employed for the characterization of these carbon allotropes and their derivatives.…”

Tightly Bound Double‐Caged [60]Fullerene Derivatives with Enhanced Solubility: Structural Features and Application in Solar Cells

“…The negative-ion MALDI mass spectra were quite typical for the similard ouble-caged derivatives and fulleroproline esters. [27][28][29] They were constituted by the molecular ([M] À )a nd fragment ([MÀC 60 ] À andC 60 À ) peaks in the cases of 1a-d,a nd the predominant molecular peaks in the cases of 2a-d.…”

“…Furthermore, the reaction products were observed to contain related triple-caged compounds. [28,29] The linking moieties in compounds 1 withdraw four sites on each of the cages from the p system and form the addition pattern known as cis-1. Structurally similar cis-1 fullerened imers have also been previously obtained by means of methanofullerenet hermolysis [30] and the solid-state reaction of C 60 with phthalazine.…”