This causes a smoky flame. Alkenes have a functional group C=C – the part of the molecule that takes part in reactions. Alkanes, in contrast, do not have a functional group and are less reactive ...

such as some types of alkene, double bonds between two carbon atoms cannot occur where the rings join together, called the bridgehead position. This is because the bonds would force the molecule ...

They are ubiquitous structural components of organic compounds in chemistry and biology. It is well known that many of the Z-alkenes cannot be prepared through conventional methods involving ...