Chem::Dihedral
Inherits Chem::Connectivity / Comparable / Struct / Value / Object
A Dihedral provides a canonical representation of a dihedral angle
between four bonded atoms.
A dihedral angle is defined by three contiguous bonds:
A C
\ / \
B D
It measures the angle between the two planes defined by the atoms (A,B,C) and (B,C,D).