The cover picture shows three molecules that constitute a thermal reaction network. On the left‐hand side the monoterpene hydrocarbon β‐pinene is depicted, which occurs in many resins of conifers, e. g. pine (lat. Pinus) or spruce. The molecules on the right‐hand side, limonene and myrcene, are thermal isomerisation products of β‐pinene pyrolysis and have a refreshing odour that is reminiscent of lemon or lime. Myrcene is a component of the essential oil of herbs like oregano, tarragon or hop. The article of B. Ondruschka et al. on p. 3317 ff. deals with the thermochemical network based upon the thermal isomerisation of β‐pinene.
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