Editing Fullerene (section)

===Solubility===
{{main|Fullerene solubility}}
[[File:C60 Fullerene solution.jpg|thumb|{{chem|C|60}} in solution]]

[[File:Carbon 60 Olive Oil Solution.JPG|thumb|{{chem|C|60}} in extra virgin olive oil, showing the characteristic purple color of pristine {{chem|C|60}} solutions]]

Fullerenes are soluble in many organic [[solvent]]s, such as [[toluene]], [[chlorobenzene]], and [[1,2,3-trichloropropane]]. Solubilities are generally rather low, such as 8 g/L for C<sub>60</sub> in [[carbon disulfide]]. Still, fullerenes are the only known [[allotrope]] of carbon that can be dissolved in common solvents at room temperature.<ref>{{Cite journal |last1=Beck |first1=Mihály T. |last2=Mándi |first2=Géza |year=1997 |title=Solubility of {{chem|C|60}} |journal=Fullerenes, Nanotubes and Carbon Nanostructures |volume=5 |issue=2 |pages=291–310 |doi=10.1080/15363839708011993}}</ref><ref>{{Cite journal |last1=Bezmel'nitsyn |first1=V.N. |last2=Eletskii |first2=A.V. |last3=Okun' |first3=M.V. |year=1998 |title=Fullerenes in solutions |journal=[[Physics-Uspekhi]] |volume=41 |issue=11 |pages=1091–1114 |bibcode=1998PhyU...41.1091B |doi=10.1070/PU1998v041n11ABEH000502 |s2cid=250785669}}</ref><ref>{{Cite journal |last1=Ruoff |first1=R.S. |last2=Tse, Doris S. |last3=Malhotra |first3=Ripudaman |last4=Lorents |first4=Donald C. |year=1993 |title=Solubility of fullerene ({{chem|C|60}}) in a variety of solvents |url=http://bucky-central.me.utexas.edu/RuoffsPDFs/40.pdf |url-status=dead |journal=[[Journal of Physical Chemistry]] |volume=97 |issue=13 |pages=3379–3383 |doi=10.1021/j100115a049 |archive-url=https://web.archive.org/web/20120508111820/http://bucky-central.me.utexas.edu/RuoffsPDFs/40.pdf |archive-date=8 May 2012 |access-date=24 February 2015}}</ref><ref>{{Cite journal |last1=Sivaraman |first1=N. |last2=Dhamodaran |first2=R. |last3=Kaliappan |first3=I. |last4=Srinivasan |first4=T. G. |last5=Vasudeva Rao |first5=P. R. P. |last6=Mathews |first6=C. K. C. |display-authors=3 |year=1994 |title=Solubility of {{chem|C|70}} in Organic Solvents |journal=Fullerene Science and Technology |volume=2 |issue=3 |pages=233–246 |doi=10.1080/15363839408009549}}</ref><ref>{{Cite journal |last1=Semenov |first1=K. N. |last2=Charykov |first2=N. A. |last3=Keskinov |first3=V. A. |last4=Piartman |first4=A. K. |last5=Blokhin |first5=A. A. |last6=Kopyrin |first6=A. A. |display-authors=3 |year=2010 |title=Solubility of Light Fullerenes in Organic Solvents |journal=Journal of Chemical & Engineering Data |volume=55 |pages=13–36 |doi=10.1021/je900296s}}</ref> Among the best solvents is [[1-chloronaphthalene]], which will dissolve 51 g/L of C<sub>60</sub>.

Solutions of pure buckminsterfullerene have a deep purple color. Solutions of {{chem|C|70}} are a reddish brown. The [[higher fullerenes]] {{chem|C|76}} to {{chem|C|84}} have a variety of colors.

Millimeter-sized crystals of {{chem|C|60}} and {{chem|C|70}}, both pure and solvated, can be grown from benzene solution. Crystallization of {{chem|C|60}} from benzene solution below 30&nbsp;°C (when solubility is maximum) yields a [[triclinic]] solid [[solvate]] {{chem|C|60}}·4{{chem|C|6|H|6}}. Above 30&nbsp;°C one obtains solvate-free [[face-centered cubic|fcc]] {{chem|C|60}}.<ref>{{Cite journal |last=Talyzin |first=A.V. |year=1997 |title=Phase Transition {{chem|C|60}}−{{chem|C|60}}*4{{chem|C|6|H|6}} in Liquid Benzene |journal=[[Journal of Physical Chemistry B]] |volume=101 |issue=47 |pages=9679–9681 |doi=10.1021/jp9720303}}</ref><ref>{{Cite journal |last1=Talyzin |first1=A.V. |last2=Engström |first2=I. |year=1998 |title={{chem|C|70}} in Benzene, Hexane, and Toluene Solutions |journal=[[Journal of Physical Chemistry B]] |volume=102 |issue=34 |pages=6477–6481 |doi=10.1021/jp9815255}}</ref>