%oldchk=c3ab4.chk
%chk=c3ab-ircr.chk
%CPU=16
%mem=50GB
#p irc=(rcfc,recalc=20,maxpoints=1000,recorrect=never,reverse,stepsize=12,report=cartesians) wb97xd chkbasis scrf=(smd,solvent=1,4-dioxane) guess=read geom=allcheck