[molpro-user] MCSCF Energy Varies When Printing CI Coefficient from natorb

Mingyang Chen mchen10 at crimson.ua.edu
Wed Aug 31 21:21:51 BST 2011


Dear everyone,

I tried to print out the CI coefficients when doing some MCSCF
calculations for Ir3 (linear, DeltaU in Dinfh -> Au or B1u in D2h) .
The B1u and Au states are degenerate, with the same total energy. The
B1u state calculation gives the same energy from MCSCF and "ci,natorb"
and the CI coefficient looks reasonable, but the Au state calculation
gives a much higher total energy in the natorb section than in the
MCSCF. Is there something wrong in my Au state calculation?

thanks
Mingyang


Input for Au (in D2h symm) state:

***
! geometry setting ...
! basis set setting ...
{hf;wf,51,8,7}    ! Au ! {hf;wf,51,5,7} for B1u
{multi;occ,9,3,3,2,6,3,3,1;closed,3,2,2,0,3,1,1,0;wf,51,8,7;natorb,ci,print}
  ! {multi;occ,9,3,3,2,6,3,3,1;closed,3,2,2,0,3,1,1,0;wf,51,5,7;natorb,ci,print}
for B1u
---


Output (Au) gives:

...
 Convergence thresholds  0.10E-01 (gradient)  0.10E-05 (energy)
0.10E-02 (step length)

 Number of orbital rotations:    1092     (  35 Core/Active  435
Core/Virtual   0 Active/Active  622 Active/Virtual)
 Total number of variables:     99650


 ITER. MIC  NCI  NEG     ENERGY(VAR)     ENERGY(PROJ)   ENERGY CHANGE
   GRAD(0)  GRAD(ORB)   GRAD(CI)     STEP       TIME

   1   57   64    0    -310.91677097    -310.92038127   -0.00361030
0.10411834 0.00000006 0.00361763  0.61D-01     85.67
   2   36   67    0    -310.92039193    -310.92040002   -0.00000809
0.00324527 0.00000000 0.00437243  0.38D-02    177.26
   3   36   67    0    -310.92040193    -310.92040476   -0.00000283
0.00124437 0.00000000 0.00312089  0.20D-02    268.79
   4   36   67    0    -310.92040576    -310.92040693   -0.00000117
0.00089611 0.00000000 0.00636783  0.12D-02    360.15
   5   32   67    0    -310.92933929    -310.93280459   -0.00346531
0.10885064 0.00000000 0.02473198  0.60D-01    451.34
   6   26   61    0    -310.93283721    -310.93284263   -0.00000542
0.00321968 0.00000002 0.00109470  0.31D-02    534.92
   7   25   39    0    -310.93284267    -310.93284268   -0.00000001
0.00017197 0.00000000 0.00036978  0.11D-03    586.03

 ** WVFN ****  CONVERGENCE REACHED, FINAL GRADIENT:  0.40D-04


 First order charge density matrix for state 1.8 saved on record
2141.2 (density set 1)

 Results for state 1.8
 =====================

 !MCSCF STATE 1.8 ENERGY             -310.932842681318
 Nuclear energy                       153.91119120
 Kinetic energy                       105.80948255
 One electron energy                 -850.76803328
 Two electron energy                  385.92399940
 Virial ratio                           3.93861037
...

 CI vector
 =========

 222aa0 2 2 aa 2a2 2a 2a 2      0.5749872
 a22aa0 2 2 a2 222 2a 2a a      0.3347404
 222a20 2 2 2a 2aa 2a 2a a     -0.2453940
 2222a0 a a 2a 2a2 2a 2a 2     -0.2267273
 222aa0 a 2 2a 2a2 22 2a a     -0.1867435
 222aa0 2 a 2a 2a2 2a 22 a     -0.1867435
 a22220 2 2 a2 2aa 2a 2a a     -0.1371137
 a222a0 a a 22 222 2a 2a a     -0.1367465
 222aa0 a 2 2a 222 2a aa 2     -0.1125500
 222aa0 2 a 2a 222 aa 2a 2     -0.1125500
 22aa20 a 2 2a 2a2 22 2a a     -0.1100730
 22aa20 2 a 2a 2a2 2a 22 a     -0.1100730
 22aa20 2 2 aa 2a2 a2 2a 2     -0.1071175
 22aa20 2 2 aa 2a2 2a a2 2      0.1071175
 a222a0 a 2 a2 2a2 22 2a a     -0.1054133
 a222a0 2 a a2 2a2 2a 22 a     -0.1054133
 22aa20 2 2 aa 2a2 2a 2a 2      0.0846196
 222aa0 2 2 aa 2a2 a2 a2 2      0.0787271
 22a220 a a 2a 2a2 2a 2a 2      0.0663686
 a22aa0 2 2 2a 222 2a 2a a      0.0660027
 a222a0 a 2 a2 222 2a aa 2     -0.0657291
 a222a0 2 a a2 222 aa 2a 2     -0.0657291
 a2a220 a 2 a2 2a2 22 2a a      0.0650328
 a2a220 2 a a2 2a2 2a 22 a      0.0650328
 a2aa20 2 2 a2 222 2a a2 a      0.0637471
 a2aa20 2 2 a2 222 a2 2a a     -0.0637471
 a2aa20 2 2 a2 222 2a 2a a      0.0549058
 222aa0 a 2 2a 222 a2 aa 2      0.0529908
 222aa0 2 a 2a 222 aa a2 2     -0.0529908
 22a220 a a 2a 2a2 2a a2 2      0.0508929
 22a220 a a 2a 2a2 a2 2a 2     -0.0508929
 222a20 2 2 2a 2aa a2 2a a     -0.0508158
 222a20 2 2 2a 2aa 2a a2 a      0.0508158

 TOTAL ENERGIES                      -310.91677189






-----------------------------------------------------------------------------------------------------------------------------------------------------------------

compared with the B1u output:


...


 Results for state 1.5
 =====================

 !MCSCF STATE 1.5 ENERGY             -310.932842682065
 Nuclear energy                       153.91123472
 Kinetic energy                       105.80932742
 One electron energy                 -850.76792634
 Two electron energy                  385.92384894
 Virial ratio                           3.93861468

 ...

 CI vector
 =========

 222aa0 2 2 22 2aa 2a 2a a      0.6113264
 22aaa0 2 2 2a 22a 2a 2a 2     -0.6099084
 2aaaa0 a 2 2a 222 22 2a 2     -0.1226944
 2aaaa0 2 a 2a 222 2a 22 2      0.1226944
 2a2aa0 a 2 22 2a2 22 2a a     -0.1198499
 2a2aa0 2 a 22 2a2 2a 22 a      0.1198499
 2a22a0 2 2 22 2aa a2 2a a      0.1027613
 2a22a0 2 2 22 2aa 2a a2 a      0.1027613
 2aa2a0 2 2 2a 22a a2 2a 2      0.1013039
 2aa2a0 2 2 2a 22a 2a a2 2      0.1013039
 222aa0 2 2 22 2aa a2 a2 a     -0.0655333
 22aaa0 2 2 2a 22a a2 a2 2      0.0654110
 222aa0 a a 22 2aa 22 22 a     -0.0559471
 22aaa0 a a 2a 22a 22 22 2      0.0545224
 22a0aa 2 2 2a a22 2a 2a 2      0.0540423
 2220aa 2 2 22 aa2 2a 2a a      0.0540154
 22aaa2 2 2 2a 02a 2a 2a 2      0.0522067
 222aa2 2 2 22 0aa 2a 2a a     -0.0519294
 22aaaa a 2 2a b2a 22 2a 2     -0.0511957
 22aaaa 2 a 2a b2a 2a 22 2      0.0511957
 222aaa a 2 22 baa 22 2a a     -0.0509685
 222aaa 2 a 22 baa 2a 22 a      0.0509685
 222aa0 a 2 2a 22a 2a 22 a      0.0502617
 222aa0 2 a 2a 22a 22 2a a      0.0502617

 TOTAL ENERGIES                      -310.93284268



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