Molecular Story: the five Ring elements in the name of the Olympic Games
You have one more ring than the fourth Ring Road.
the Olympic Games will be held again (although everyone probably has no hope for this one. ), in response to the situation, send two kinds of five-ring elements named after the Olympic Games.
"Olympic Ene" Olympicene
is called olefin inaccurately. It is a polycyclic aromatic hydrocarbon, officially called Benzo [cd] pyrene, but the name Olympicene is widely used.
it is said that this compound has been known in the field of organic chemistry since the 1960s. In 2012, researchers at the University of Warwick in the UK combined with IBM Research to synthesize the molecule and used a scanning tunneling microscope to take an image of a single molecule, arguably the smallest five-ring in the world, with a width of 1.2nm.
(to put it simply, a scanning tunneling microscope is a technique that can use a very thin tip to "feel" the atoms on the surface of a material, and it can also manipulate a single atom.)
PS: (another aromatic compound of Picene,) is also very much like a pentacyclic:
"Olympiadane" Olympiadane
the molecule of Olympiadane is much larger than that of Olympia, which contains five sets of rings.
the so-called hydrocarbon locking is that, like a chain, several molecular loops are locked together. There is no covalent bond connection between the circles, but if the chemical bonds on each circle are not broken, they will not be separated. The following is a schematic diagram of two looped hydrocarbon locks:
while Olympic hydrocarbon locking naturally requires five loops. The schematic diagrams of two kinds of planar and three-dimensional structures are as follows:
(looks a little dizzy …. )
Slip into the super charming in our modest mother of the bride dresses. There is no collection like ours.
this nested five-ring molecule was synthesized and named by Fraser Stoddart et al in 1994. The title of the paper published at that time was simple, that is, "Olympiadane".
this molecule itself does not consider any application value, but it still has application potential to master the synthesis technology and synthesize some other locked hydrocarbons.