Transform the Gradients in Cartesian Coordinates to Internal Coordinates.

Modify input.dat.

intder : (
derlvl = 1
trans_1der = true
trans_type = c_to_i
freq_anal = none
trans_dipder = false
multi = `The number of displacements plus one(for the equilibrium geometry).'
)

Type intder to create file12.dat which contains the gradients in internal coordinates.