%mem=1gb %nproc=10 %chk=temp.chk #t b3lyp/6-31g* opt=(gdiis,loose) cytosine_3670 0 1 O 0.7228 -2.8105 0.2412 N -1.7571 0.8556 -0.1236 N -0.5040 -0.9831 0.0932 N 1.7607 -0.8746 0.1199 C 0.6603 -1.5940 0.1558 C -0.5914 0.3275 -0.0386 C 1.7330 0.4155 0.0068 C 0.5349 1.0766 -0.0858 H -2.5210 0.3330 0.0124 H -1.8507 1.7644 -0.3250 H -1.2881 -1.4922 0.1377 H 2.5896 0.9159 -0.0124 H 0.5109 2.0660 -0.1815 --link1-- %mem=1gb %nproc=10 %chk=temp.chk #t pbe1pbe/3-21g** guess=read geom=checkpoint nmr cytosine_3670 0 1