%nproc=24
%mem=100GB
#p ROCCSD(T) cc-pV5Z pop=full gfprint

G2

0,1
Si
H,1,R
H,1,R,2,109.47122063
H,1,R,2,109.47122063,3,120.,0
H,1,R,2,109.47122063,3,-120.,0

R=1.48241986