Helicenes and Corohelicenes

Any helicene may be represented by a planar graph and can therefore be referred to as graph—theoretically planar. 

The following definition of a class of multiply connected polyhexes is supposed to be analogous to the definition of helicenes in a rational way. 

Definition 2.5 A corohelicene (system) is a multiply connected, geometrically nonplanar (helicenic) polyhex, which is graph-theoretically planar. 

The requirement about graph—theoretical planarity is new. Notice that corohelicenes are not 

It is reasonable to introduce the term corojusene in analogy to fusene according to  

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