How to get z-matrix coordination in chk file



Hi, everybody:
 How are u, I meet one problem, I want to read the z-matrix form geom
 coordination from .chk file when I do --Link1-- calculations, who can give
 me some advice? For instance, the first step I do opt for one molecular
 and then I want do freq calculations(I didn`t want to do OPT and FREQ by
 using together opt and freq) by --Link1-- keyword for which I must read
 the optmized in first step, and in this step I want to read the z-matrix
 form coordinates other than cartesian form from .chk file, and how we
 should to do? In addition to, I mainly intend to do it by setting in gaussian
 input file.
 Thanks
 best wish to u!