<div dir="ltr"><div><div><div>Dear Sir, <br></div>I want to calculate the excited state optimization and frequency calculations using EOM-CCSD method.<br></div>Here I am giving the input, after optimization I am getting the below error in log file<br>
</div><u>Input</u><br>! equilibrium structure<br>Â ***,coupling constants<br>Â memory,400,m<br>Â basis,avdz<br>Â geomtyp = xyz<br>Â geometry = {12,<br>Â planar isomer<br>Â CÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0.00000000Â Â Â 1.40113000Â Â Â 0.00000000<br>
 C                 1.21341400   0.70056500   0.00000000<br> C                 1.21341400  -0.70056500   0.00000000<br> C                 0.00000000  -1.40113000   0.00000000<br> C                -1.21341400  -0.70056500   0.00000000<br>
 C                -1.21341400   0.70056500   0.00000000<br> F                 0.00000000  -2.74720600   0.00000000<br> F                 2.37915000  -1.37360300   0.00000000<br> F                -2.37915000   1.37360300   0.00000000<br>
 F                 0.00000000   2.74720600   0.00000000<br> F                 2.37915000   1.37360300   0.00000000<br> F                -2.37915000  -1.37360300   0.00000000<br> end}<br> {rhf;wf,90,1,0}<br> {ccsd<br>
 eom,1.2;}<br> eopt=energy(2);<br> optg,variable=eopt;<br> frequencies;<br> exit<br><br><br><div><span style="color:rgb(255,0,0)"><u>Error in log file</u></span><br>?ILLEGAL SYMMETRY ON EOM CARD: 2<br><span style="color:rgb(255,0,0)"><u>End of out file</u></span><br>
 PROGRAM * HESSIAN<br><br> Computing numerical hessian using default procedure for command CCSD<br><br> Symmetry elements for unique displacements: X Y Z<br><br> Using no symmetry in wavefunction calculations<br><br> Running default procedure: RHF-SCF000 CCSD<br>
<br><br>Â Numerically approximating hessian using central energy differences<br><br>Â Task list generated. Total number of displacements:Â Â Â 188<br><br><br>Â ERROR EXIT<br>Â CURRENT STACK:Â Â Â Â Â CIINPÂ MAIN<br><br><br>Â **********************************************************************************************************************************<br>
 DATASETS * FILE  NREC  LENGTH (MB)  RECORD NAMES<br>             1     21    1496.21      500     610     700     701     900     950     970    1001     129     960<br>                                         VAR   BASINP   GEOM    GEOM   SYMINP   ZMAT   AOBASIS  BASIS    P2S   ABASIS<br>
                                        1100    1400    1410    1200    1210    1080    1600    1650    1300    1700<br>                                          S       T       V      H0      H01    AOSYM    SMH   MOLCAS   ERIS    OPER<br>
                                        2100<br>                                         RHF<br><br>             2      7       1.41      700    1000    2100    5600    5500     701    1001<br>                                        GEOM    BASIS    RHF    GINFO   HINFO   GEOM    BASIS<br>
<br>Â PROGRAMSÂ Â *Â Â Â Â Â Â Â TOTALÂ Â Â FEHLERÂ Â Â Â Â OPTGÂ Â Â Â Â CCSDÂ Â Â Â Â Â RHFÂ Â Â Â Â Â INT<br>Â CPU TIMESÂ *Â Â Â Â 58606.77Â Â Â Â Â 0.02Â 57514.70Â Â Â 841.00Â Â Â Â Â 9.08Â Â Â Â 36.29<br>Â REAL TIMEÂ *Â Â Â Â 66029.72 SEC<br>Â DISK USEDÂ *Â Â Â Â Â Â Â Â 5.73 GB<br>
 **********************************************************************************************************************************<br><br></div><div>Could you help me to calculate the excited state optimization and frequency calculations using EOM-CCSD method<br>
<br></div><div>Best regards<br>Nagaprasad Reddy<br></div><div>School of Chemistry<br></div><div>University of Hyderabad<br></div><div><br></div></div>