Buckminsterfullerene 62 i electrons,(4n+2 with n=15) not planar with considerable ring strain... the molecule appears aromatic,but is much more reactive than benzene
are e ugged.They excess 20.000 miles per hour. 1mile=1.6 km 100m/s
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rconducting buckyballs have the highese critica eratureof any known organic compound,now rbon 60 grown on lanthanum aluminat
Some New Allotropes Fullerenes:5-and 6-membered rings arranged to form a "soccer ball" structure. Nanotubes:half of a C6o sphere fused to a cylinder of fused aromatic rings. buckyball (C6) carbon nanotube Copyright 2005 Pearson Prentice Hall,Inc
Some New Allotropes ❖Fullerenes: 5- and 6-membered rings arranged to form a “soccer ball” structure. ❖Nanotubes: half of a C60 sphere fused to a cylinder of fused aromatic rings
Aromatic Heterocycles---Pyridine Heterocyclic aromatic compound. Nonbonding pair of electrons in sp2 orbital,so weak base,p =8.8. Lone pair in Pyridine (Six electrons) sp2 orbital (sp2) Lone pair +H2O N-H +-OH +H20 +-OH pyridine,pp=8.8 pyridinium ion,pK.=5.2 Copyright2005 Pearson Prentice Hall.Inc
Aromatic Heterocycles ---Pyridine ❖Heterocyclic aromatic compound. ❖Nonbonding pair of electrons in sp2 orbital, so weak base, pKb = 8.8