%oldchk=sn2_ts.chk
%chk=sn2_irc.chk
%nprocshared=8
%mem=8GB
#p B3LYP/6-31+G(d) EmpiricalDispersion=GD3BJ IRC=(RCFC,Phase=(1,3),MaxPoints=80,StepSize=10,MaxCycle=50) Geom=Check Guess=Read

SN2 IRC in both directions from the converged TS; forward = C-Br bond lengthening

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