Retrieving "Internal Coordinate Matrix" from the archives

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1. Molecular Coordinates

   Linked via "internal coordinate matrix"

   The $Z$-Matrix Convention
   The $Z$-Matrix (or internal coordinate matrix) is a specific convention for arranging internal coordinates. It defines the position of each atom sequentially based on its relationship (distance, angle, dihedral) to one or two previously defined atoms. While highly useful for inputting molecular geometries, the $Z$-Matrix is inherently less suited for calculating [dynamic proper…