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<div style="margin-top:0;margin-bottom:0;">Dear Molpro-users,</div>
<div style="margin-top:0;margin-bottom:0;">I would like to calculate the CASPT2 of a ion-molecule complex.</div>
<div style="margin-top:0;margin-bottom:0;">Let say, my system comprises with benzene and proton (C6H6,p) like as:</div>
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<div style="margin-top:0;margin-bottom:0;">basis=aug-cc-pVTZ<br>
ANGSTROM<br>
geometry={<br>
13<br>
<br>
 H          0.0000000000        0.0000000000        1.0764540290<br>
 C         -1.3829489757        0.0000000000       -0.0235459710<br>
 C          1.3829489757        0.0000000000       -0.0235459710<br>
 C         -0.7170426451       -1.2709157166       -0.0235459710<br>
 C         -0.7170426451        1.2709157166       -0.0235459710<br>
 C          0.7170426451       -1.2709157166       -0.0235459710<br>
 C          0.7170426451        1.2709157166       -0.0235459710<br>
 H         -2.4616327395        0.0000000000        0.0910251485<br>
 H          2.4616327395        0.0000000000        0.0910251485<br>
 H         -1.2935012962       -2.1727274326        0.1062481643<br>
 H         -1.2935012962        2.1727274326        0.1062481643<br>
 H          1.2935012962       -2.1727274326        0.1062481643<br>
 H          1.2935012962        2.1727274326        0.1062481643<br>
<br>
}                                                                  <br>
 set,nelec=42<br>
 hf<br>
<br>
 {multi;<br>
 closed,6,6,3,3;<br>
 occ,10,6,6,3;<br>
 wf;state,2<br>
 canonical,2140.2}<br>
<br>
 {rs2,mix=2;<br>
 wf;state,2}</div>
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</div>
<div style="margin-top:0;margin-bottom:0;">But it shows error. For your convenience I copied and paste the last portion of output file.<br>
</div>
<div style="margin-top:0;margin-bottom:0;">I would be glad if anyone can help for this problem.</div>
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</div>
<div style="margin-top:0;margin-bottom:0;">With regards,</div>
<div style="margin-top:0;margin-bottom:0;">Basir Ahamed Khan<br>
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</span></font></span></font>
<p> RESULTS FOR STATE 1.1<br>
 =====================<br>
<br>
 Coefficient of reference function:   C(0) = 1.00000000 (fixed)   1.00000000 (relaxed)   1.00000000 (rotated)<br>
<br>
 Energy contributions of configuration classes<br>
<br>
 CLASS          SQ.NORM        ECORR1        ECORR2<br>
 +++++++++++++++++++++++++++++++++++++++++++++++++++<br>
 Internals    0.02285439   -0.02650612    0.92261658<br>
 Singles      0.08512034   -0.16604502   -0.33213574<br>
 Pairs        0.24937323   -0.78295075   -1.56611696<br>
 Total        1.35734796   -0.97550189   -0.97563612<br>
 +++++++++++++++++++++++++++++++++++++++++++++++++++<br>
<br>
<br>
 Reference energy                    -230.97791702<br>
 Nuclear energy                       210.64450737<br>
 Kinetic energy                       230.82144006<br>
 One electron energy                 -718.16636550<br>
 Two electron energy                  275.56830500<br>
 Virial quotient                       -1.00490471<br>
 Correlation energy                    -0.97563612<br>
 !RSPT2 STATE 1.1 Energy             -231.953553134590<br>
<br>
 Properties without orbital relaxation:<br>
<br>
 !RSPT2 STATE 1.1 Dipole moment         0.00000000     0.00000000     0.59918422<br>
 Dipole moment /Debye                   0.00000000     0.00000000     1.52287462<br>
<br>
<br>
<br>
 RESULTS FOR STATE 2.1<br>
 =====================<br>
<br>
 Coefficient of reference function:   C(0) = 1.00000000 (fixed)   1.00000000 (relaxed)   1.00000000 (rotated)<br>
<br>
 Energy contributions of configuration classes<br>
<br>
 CLASS          SQ.NORM        ECORR1        ECORR2<br>
 +++++++++++++++++++++++++++++++++++++++++++++++++++<br>
 Internals    0.05469264   -0.04439341    0.94998327<br>
 Singles      5.54438085   -0.22693318   -0.60377126<br>
 Pairs        0.25493555   -0.76755074   -1.53501177<br>
 Total        6.85400905   -1.03887732   -1.18879976<br>
 +++++++++++++++++++++++++++++++++++++++++++++++++++<br>
<br>
<br>
 Reference energy                    -230.70029854<br>
 Nuclear energy                       210.64450737<br>
 Kinetic energy                       229.72692680<br>
 One electron energy                 -712.47725207<br>
 Two electron energy                  269.94364640<br>
 Virial quotient                       -1.00941192<br>
 Correlation energy                    -1.18879976<br>
 !RSPT2 STATE 2.1 Energy             -231.889098300045<br>
<br>
 Properties without orbital relaxation:<br>
<br>
 !RSPT2 STATE 2.1 Dipole moment         0.00000000     0.00000000     0.31181804<br>
 Dipole moment /Debye                   0.00000000     0.00000000     0.79251051<br>
<br>
 !RSPT overlap           <2.1||1.1>     0.003167004374<br>
<br>
 !RSPT trans          <2.1|DMZ|1.1>    -0.362581392446 au =    -0.921529615414 Debye<br>
<br>
 ? Error<br>
 ? No convergence. This error exit can be avoided using the NOCHECK option<br>
 ? The problem occurs in cipro<br>
<br>
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