What is the structure of quinine? [closed]








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[![enter image description here](https://i.stack.imgur.com/Blo2v.png)](https://i.stack.imgur.com/Blo2v.png)


I am very confused on what the inner lines in the hexagons mean, are these representing double bonds? If yes, does that mean quinine has 6 double bonds? Also what would be considered a central atom that has at least 2 atoms bonded to it and how would I find the angle.




The easiest way to understand it is that there are certain molecules in which the electrons move around *very* freely. This means that they're not localised between the nuclei which have been bonded together, but, due to a *resonance*, they can travel almost freely all around the ring (given an approximately equal distribution of electron density). A very simple way you can tell something is resonant is if you can draw the electron distributions in different ways without changing the molecule itself, e.g.:
[![Benzene aromaticity](https://i.stack.imgur.com/u5hIv.png)](https://i.stack.imgur.com/u5hIv.png)


So, the rings in the quinine molecule above are *aromatic* rings (as Poutnik mentioned). When someone says that something is 'aromatic' in chemistry, it means that these molecules are stabilised by these resonance effects. In high school, they told us to think of them as 1.5 bonds.


And, to be honest, molecular geometry is a lot more complicated than 'finding the angle' to something. That being said, if you look up VSPER, that might help? I'm not quite sure what you mean by a 'central atom', though...


**Note:** This is a highly simplified answer, but I'm assuming (no offence) that you need a high school-level introduction, rather than a university-level lecture.


Also, that picture is a lot bigger than I thought it would be... sorry :s


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