Mathematical analysis has been consistently effective in unravelling the mechanics of various mechanical systems. The mechanical behavior of gis-ZIF-1 can be thoroughly explained through a mathematical model, predominantly defined by a single variable, θ. This variable is directly linked to Cartesian coordinates, which are derived from the projection on ab plane within the unit cell of gis-ZIF-1 (Figure , S12). As a result, the correlation between a parameter and θ can be accurately represented by a simple mathematical equation, as defined below.