Synthesis and Magnetic Properties of a Nitrogen‐Containing Fullerene Dimer

Hörmann, F.; Hirsch, Andreas; Porfyrakis, Kyriakos; Briggs, G. Andrew D.

doi:10.1002/ejoc.201000867

Cited by 14 publications

(10 citation statements)

References 17 publications

(31 reference statements)

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“…In 2011, Porfyrakis et al . also found that there is no change in the hffc and g value for a nitrogen‐containing fullerene dimer, which suggests that the nitrogen atom is still in the center of the cage, confirming the previous report by Dinse . Two years later, the same group reported the synthesis of two dimers 14 N@C 60 ‐C 60 and 15 N@C 60 ‐C 60 .…”

Section: Endohedral Fullerenessupporting

confidence: 80%

Electron spin resonance spectroscopy of empty and endohedral fullerenes

Romero

Echegoyen

2016

J of Physical Organic Chem

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Fullerene derivatives exhibit many interesting structural, electronic, and chemical properties, largely determined by the carbon cage's ability to accept electrons. Electron spin resonance spectroscopy is a very sensitive and important technique to detect open shell species and to determine HOMO and LUMO density distributions. Here we present a short overview of the most significant and informative reports of electron spin resonance studies of empty and endohedral fullerenes, classified on the basis of the entrapped moiety, cage size symmetry, and on the techniques used to generate the paramagnetic states. N@C 61 (COOEt) 2 (a) in solution and (b) in the form of a powder at ambient temperature (c) simulation.Figure 6. Molecular switch based on a covalently linked N@C 60 -porphyrin dyad controlled by metalation/demetalation. Reproduced with permission from ref 44.Figure 12. Molecular switch of paramagnetic properties of Sc 3 C 2 @C 80 . Reproduced with permission from ref 65.

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Section: Endohedral Fullerenessupporting

confidence: 80%

Electron spin resonance spectroscopy of empty and endohedral fullerenes

Romero

Echegoyen

2016

J of Physical Organic Chem

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“…Short reaction times are therefore advantageous because their use may limit the spin loss that has been observed for other dimer reactions involving N@C 60 . 18,19 The reaction scheme, which is based on the Prato method, 22 is shown in Fig. 1.…”

Section: Synthesismentioning

confidence: 99%

“…9,10 Consequently, there are only a small number of examples of N@C 60 derivatization: several monomers, [9][10][11][12][13][14][15] an endohedral fullerene-porphyrin dyad 16 and three types of endohedral fullerene-fullerene dimer. 17,18,19 Recently, we succeeded in synthesizing a covalently linked 14 N@C 60 -14 N@C 60 dimer using highly enriched N@C 60 . 20 However, all of the above involve 14 N@C 60 with 15 N present only in natural abundance.…”

Section: Introductionmentioning

confidence: 99%

A two-step approach to the synthesis of N@C60 fullerene dimers for molecular qubits

et al. 2013

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We report the two-step synthesis of a highly soluble fullerene dimer, both for short reaction times and at the microscale. We apply this reaction scheme to starting materials that contain 15 N@C 60 and 14 N@C 60 , and we demonstrate how, if applied to highly pure N@C 60 in the future, this scheme may be used to produce ( 14 N@C 60 ) 2 or ( 15 N@C 60 ) 2 dimers in one step, and crucially 14 N@C 60 -15 N@C 60 dimers in a second step. Such dimers represent isolated electron spin pairs that may be used to demonstrate entanglement between the spins. Additionally, CW EPR spectroscopy of the 15 N@C 60 -C 60 dimer in the solid state reveals permanent zero-field splitting (D ¼ 14.6 MHz and E ¼ 0.56 MHz).

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“…The products were characterised by a range of analytical tools, and their structures were confirmed by MALDI mass spectrometry, UV-Vis, FT-IR, 1 H NMR, and 13 C NMR spectroscopy. 46 Cyclic nickel and free-base porphyrin dimers including C 70 fullerene both in solution and in crystals were reported. 47 2.1.5 Fullerene derivatives containing halogens.…”

Section: Production Separation and Properties Of Fullerenesmentioning

confidence: 99%

Fullerenes

Darwish

2012

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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This chapter reviews the literature reported during 2011 on fullerene chemistry including fullerene production and properties, organic and organometallic chemistry, endohedral derivatives and advanced materials as well as theoretical studies and possible applications of fullerene and its derivatives. HighlightsA facile preparation of highly water-soluble derivatives C 70 [p-C 6 H 4 (CH 2 ) n COOH] 8 (n = 2, 3) has been reported. The synthesised fullerene derivatives demonstrated low toxicity in vitro and in vivo in combination with the pronounced antiviral activity observed against HIV and influenza virus.

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Synthesis and Magnetic Properties of a Nitrogen‐Containing Fullerene Dimer

Cited by 14 publications

References 17 publications

Electron spin resonance spectroscopy of empty and endohedral fullerenes

Electron spin resonance spectroscopy of empty and endohedral fullerenes

A two-step approach to the synthesis of N@C60 fullerene dimers for molecular qubits

Fullerenes

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