! PBE0 D3BJ def2-SVP def2/J RIJCOSX TightSCF defgrid3 OptTS TightOpt Freq pal8

%geom
 calc_hess true
 recalc_hess 10
 trust -0.2
 maxiter 600
end 

%maxcore 4000

*xyzfile 0 1 reaction-21-ts-guess.xyz