▁standard ▁conditions , ▁so ▁that ▁C 7 0 · Ar ▁is ▁less ▁stable ▁than ▁C 6 0 · Ar . ▁This ▁is ▁likely ▁to ▁be ▁due ▁to ▁the ▁shape ▁and ▁internal ▁rotation ▁allowing ▁channels ▁through ▁which ▁Ar ▁atoms ▁can ▁move . ▁ ▁When ▁full eren es ▁are ▁dissol ved ▁and ▁cry st all ized ▁from ▁to lu ene , ▁sol ids ▁may ▁form ▁with ▁to lu ene ▁included ▁as ▁part ▁of ▁the ▁cry stal . ▁However , ▁if ▁this ▁cry st all ization ▁is ▁performed ▁under ▁a ▁high ▁pressure ▁arg on ▁atmosphere , ▁to lu ene ▁is ▁not ▁included , ▁being ▁replaced ▁by ▁arg on . ▁The ▁arg on ▁is ▁then ▁removed ▁from ▁the ▁result ant ▁cry stal ▁by ▁he ating ▁to ▁produce ▁un sol v ated ▁solid ▁full er ene . ▁ ▁Cl ath rate ▁Arg on ▁forms ▁a ▁cl ath rate ▁with ▁hydro quin one ▁( HO C 6 H 4 OH ) 3 • Ar . ▁When ▁cry st all ised ▁from ▁ben z ene ▁under ▁a ▁pressure ▁of ▁ 2 0 ▁atmos pher es ▁of ▁arg on , ▁a ▁well ▁defined ▁structure ▁containing ▁arg on ▁results . ▁An ▁arg on - phen ol ▁cl ath rate ▁ 4 C 6 H 5 OH • Ar ▁is ▁also ▁known . ▁It ▁has ▁a ▁binding ▁energy ▁of ▁ 4 0 ▁k J / m ol . ▁Other ▁subst it uted ▁phen ols ▁can ▁also ▁cry st all ise ▁with ▁arg on . ▁The ▁arg on ▁water ▁cl ath rate ▁is ▁described