Interpenetration vs. polycatenation 

Interpenetration Polycatenation
The component motifs are infinitely extended 1D, 2D or 3D netsThe motifs can be 0D and 1D (with closed circuits) or 2D, of the same or of different types
The individual motifs have an identical topologyThe individual motifs may have different topology
The number of the entangled motifs is finiteInfinite number of entangled motifs
The resulting dimensionality is the same of the component motifsThe resulting dimensionality is increased (for at least one motif)
Each motif is interlaced with all the other ones forming the arrayEach motif is never interlaced with all the other ones of the array
The resulting entangled array is infinite periodic

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