[CP2K:10302] Re: MO coefficients not normalized?

Matt W mattwa... at gmail.com
Fri May 11 16:25:00 UTC 2018


Are you sure it is restarting correctly? Do you have, for instance, a name 
of a restart file that does not exist?

Matt



On Friday, May 11, 2018 at 4:43:08 PM UTC+1, Dan_M wrote:
>
>
> I just checked with DZVP-MOLOPT-SR and I get the same bahaviour (as 
> before, previously converged without any issue with OT at EPS_SCF 1.0E-8):
>
>   Step     Update method      Time    Convergence         Total energy    
> Change
>   
> ------------------------------------------------------------------------------
>      1 P_Mix/Diag. 0.10E+00    1.9     1.01887548     -2483.2801991206 
> -2.48E+03
>      2 P_Mix/Diag. 0.10E+00    2.2     0.17795477     -2483.2664599411  
> 1.37E-02
>      3 P_Mix/Diag. 0.10E+00    2.2     0.15515820     -2483.2705252108 
> -4.07E-03
>      4 P_Mix/Diag. 0.10E+00    2.2     0.13461919     -2483.2732304534 
> -2.71E-03
>      5 P_Mix/Diag. 0.10E+00    2.2     0.11636509     -2483.2750698192 
> -1.84E-03
>      6 P_Mix/Diag. 0.10E+00    2.2     0.10030721     -2483.2763421133 
> -1.27E-03
>      7 P_Mix/Diag. 0.10E+00    2.2     0.08629078     -2483.2772336240 
> -8.92E-04
>      8 P_Mix/Diag. 0.10E+00    3.3     0.07412833     -2483.2778639847 
> -6.30E-04
>      9 P_Mix/Diag. 0.10E+00    2.2     0.06362153     -2483.2783121408 
> -4.48E-04
>     10 P_Mix/Diag. 0.10E+00    2.2     0.05457503     -2483.2786314448 
> -3.19E-04
>     11 P_Mix/Diag. 0.10E+00    2.2     0.04680461     -2483.2788586871 
> -2.27E-04
>     12 P_Mix/Diag. 0.10E+00    2.2     1.01928993     -2483.2790196613 
> -1.61E-04
>     13 P_Mix/Diag. 0.10E+00    2.2     0.17939488     -2483.2653152844  
> 1.37E-02
>     14 P_Mix/Diag. 0.10E+00    2.2     0.15625219     -2483.2694676081 
> -4.15E-03
>     15 P_Mix/Diag. 0.10E+00    2.2     0.13547789     -2483.2722671414 
> -2.80E-03
>     16 P_Mix/Diag. 0.10E+00    2.2     0.11706181     -2483.2741996740 
> -1.93E-03
>     17 P_Mix/Diag. 0.10E+00    2.2     0.10089024     -2483.2755600100 
> -1.36E-03
>     18 P_Mix/Diag. 0.10E+00    2.2     0.08679173     -2483.2765326974 
> -9.73E-04
>     19 P_Mix/Diag. 0.10E+00    2.2     0.07456783     -2483.2772368267 
> -7.04E-04
>     20 P_Mix/Diag. 0.10E+00    2.2     0.06401302     -2483.2777514316 
> -5.15E-04
>     21 P_Mix/Diag. 0.10E+00    2.2     0.05492734     -2483.2781302721 
> -3.79E-04
>     22 P_Mix/Diag. 0.10E+00    2.2     1.00816260     -2483.2784106908 
> -2.80E-04
>     23 P_Mix/Diag. 0.10E+00    2.2     0.20701607     -2483.2636042414  
> 1.48E-02
>     24 P_Mix/Diag. 0.10E+00    2.2     0.16102347     -2483.2681624989 
> -4.56E-03
> ..
>
> Is it worth to try with other settings for the diagonalization/mixing or 
> should I look somewhere else? 
>
> Thanks a lot
> D.
>
>
> El viernes, 11 de mayo de 2018, 14:32:12 (UTC+2), Matthias Krack escribió:
>>
>> Hi Daniel
>>
>>  
>>
>> did you check if other basis sets like DZVP-MOLOPT-SR cause the same 
>> behaviour?
>>
>>  
>>
>> Best regards
>>
>>  
>>
>> Matthias
>>
>>  
>>
>> *From:* cp... at googlegroups.com [mailto:cp... at googlegroups.com] *On 
>> Behalf Of *Dan_M
>> *Sent:* 11 May 2018 11:48
>> *To:* cp2k
>> *Subject:* Re: [CP2K:10302] Re: MO coefficients not normalized?
>>
>>  
>>
>> Hi Matthias,
>>
>> I did what you suggested and even though it seemed to make the 
>> convergence a bit smoother for OT, still it does not improve the 
>> diagonalization.
>> Specifically, I set EPS_DEFAULT 1.0E-14 and dropped the *_CUTOFF and XC 
>> smoothing, and converged with OT and EPS_SCF 1.0E-8.
>> With this optimized wfn I started the diagonalization (algorithm 
>> standard, direct_p_mixing, alpha 0.1) and doesn't work:
>>
>>   Step     Update method      Time    Convergence         Total energy    
>> Change
>>   
>> ------------------------------------------------------------------------------
>>      1 P_Mix/Diag. 0.10E+00    5.9     1.04345518     -2483.7051317469 
>> -2.48E+03
>>      2 P_Mix/Diag. 0.10E+00    6.2     0.21526298     -2483.6950681260  
>> 1.01E-02
>>      3 P_Mix/Diag. 0.10E+00    6.3     0.18583657     -2483.6983718168 
>> -3.30E-03
>>      4 P_Mix/Diag. 0.10E+00    6.2     0.15912799     -2483.7005021331 
>> -2.13E-03
>>      5 P_Mix/Diag. 0.10E+00    6.6     0.13537782     -2483.7018913141 
>> -1.39E-03
>>      6 P_Mix/Diag. 0.10E+00    7.2     0.11457317     -2483.7028012278 
>> -9.10E-04
>>      7 P_Mix/Diag. 0.10E+00    6.2     0.09655329     -2483.7033951772 
>> -5.94E-04
>>      8 P_Mix/Diag. 0.10E+00    6.2     0.08107945     -2483.7037777217 
>> -3.83E-04
>>      9 P_Mix/Diag. 0.10E+00    6.4     0.06788010     -2483.7040173663 
>> -2.40E-04
>>     10 P_Mix/Diag. 0.10E+00    6.2     1.05830128     -2483.7041598673 
>> -1.43E-04
>>     11 P_Mix/Diag. 0.10E+00    6.4     0.27282434     -2483.6885022250  
>> 1.57E-02
>>     12 P_Mix/Diag. 0.10E+00    6.2     0.19477670     -2483.6934564774 
>> -4.95E-03
>>     13 P_Mix/Diag. 0.10E+00    6.3     0.15900657     -2483.6966522751 
>> -3.20E-03
>>     14 P_Mix/Diag. 0.10E+00    6.3     0.13501187     -2483.6987689554 
>> -2.12E-03
>>     15 P_Mix/Diag. 0.10E+00    6.2     0.11406673     -2483.7002037460 
>> -1.43E-03
>>     16 P_Mix/Diag. 0.10E+00    6.3     0.09597285     -2483.7011950370 
>> -9.91E-04
>>     17 P_Mix/Diag. 0.10E+00    6.3     0.08046688     -2483.7018901542 
>> -6.95E-04
>>     18 P_Mix/Diag. 0.10E+00    6.3     0.06782297     -2483.7023829252 
>> -4.93E-04
>>     19 P_Mix/Diag. 0.10E+00    6.3     1.04290747     -2483.7027348383 
>> -3.52E-04
>>     20 P_Mix/Diag. 0.10E+00    6.2     0.21550410     -2483.6899786616  
>> 1.28E-02
>>     21 P_Mix/Diag. 0.10E+00    6.2     0.18544263     -2483.6942956542 
>> -4.32E-03
>> ....
>>
>> BTW, that was after I set EPS_DIIS in &SCF below EPS_SCF, since otherwise 
>> things get much worse after DIIS starts:
>>
>>   Step     Update method      Time    Convergence         Total energy    
>> Change
>>   
>> ------------------------------------------------------------------------------
>>      1 P_Mix/Diag. 0.10E+00    5.9     1.04345518     -2483.7051317469 
>> -2.48E+03
>>      2 P_Mix/Diag. 0.10E+00    6.5     0.21526298     -2483.6950681260  
>> 1.01E-02
>>      3 P_Mix/Diag. 0.10E+00    6.5     0.18583657     -2483.6983718168 
>> -3.30E-03
>>      4 P_Mix/Diag. 0.10E+00    6.6     0.15912799     -2483.7005021331 
>> -2.13E-03
>>      5 P_Mix/Diag. 0.10E+00    6.5     0.13537782     -2483.7018913141 
>> -1.39E-03
>>      6 P_Mix/Diag. 0.10E+00    6.5     0.11457317     -2483.7028012278 
>> -9.10E-04
>>      7 P_Mix/Diag. 0.10E+00    6.5     0.09655329     -2483.7033951772 
>> -5.94E-04
>>      8 DIIS/Diag.  0.26E-02    6.6     1.09993086     -2483.7037777217 
>> -3.83E-04
>>      9 P_Mix/Diag. 0.10E+00    6.5    98.45213358     -2482.2918306873  
>> 1.41E+00
>>     10 P_Mix/Diag. 0.10E+00    6.5    88.61338472     -2479.1562224901  
>> 3.14E+00
>>     11 P_Mix/Diag. 0.10E+00    6.4   738.84827806     -2413.5998990757  
>> 6.56E+01
>>     12 P_Mix/Diag. 0.10E+00    6.5   726.38204744     -2239.0573891721  
>> 1.75E+02
>> ...
>>
>> So probably you are right, there may be something else wrong. The 
>> possible issue that comes to my mind is that the system is not that simple. 
>> It is a water slab periodic in 2 dimensions and with a ~12 angstroms 
>> spacing in the 3rd dimension, treated as fully periodic (e.g. &Poisson 
>> periodic XYZ) but I made sure that the net dipole is very small and 
>> slab-slab interactions are negligible for the neutral water slab. Then 
>> there is a proton placed close to a water in the slab surface, geometry 
>> very far from optimal (some could say "unphysical" but it should be 
>> treatable --and actually it works with OT--, H+ is 1.14 angstrom away from 
>> the closest O and 1.47 to the closest H). I am aware that of course I can 
>> not expect to converge the wfn for any kind of crazy geometry, but what I 
>> don't understand is why if OT converges (despite all the issues like 
>> charged cell, exotic geometry, etc) then diagonalization does not. Is it 
>> possible that simply the difficult geometry screws up that much the 
>> diagonalization of the OT converged wfn?
>>
>> Thanks a lot for your comments,
>> Daniel
>>
>>
>> El jueves, 10 de mayo de 2018, 18:43:47 (UTC+2), Matthias Krack escribió:
>>
>> Hi Daniel
>>
>>  
>>
>> If your preceding OT run converged properly (tightly), the restart with 
>> diagonalisation should converge immediately or after a few steps, otherwise 
>> something is wrong.
>>
>>  
>>
>> There are some issues in your input which I would change without claiming 
>> that this will solve your problem. I would
>>
>> 1)      use a smaller EPS_DEFAULT, e.g. at least 1.0E-12 (smaller is 
>> also fine), 1.0E-10 is not tight enough
>>
>> 2)      drop the *_CUTOFF values in the &XC section unless you have a 
>> good reason to set some of these values explicitly
>>
>> 3)      drop the smoothing unless you have any good reason to use it 
>> (e.g. with BLYP), since you are using with 700Ry a rather high cutoff anyway
>>
>> 4)      use diagonalisation  with direct_p_mixing and a mixing alpha of 
>> about 0.1 for restart, if that does not converge immediately or at least 
>> within a few SCF steps starting from a converged OT run, then most likely 
>> something else is wrong and it is unlikely that any other mixing method 
>> will work better and solve the problem
>>
>> I understood that you are dealing with a condensed phase system. If yes, 
>> did you check that the QZV3P basis sets you are using are suited for that 
>> setup?
>>
>>  
>>
>> Best regards
>>
>>  
>>
>> Matthias
>>
>>  
>>
>> *From:* cp... at googlegroups.com [mailto:cp... at googlegroups.com] *On 
>> Behalf Of *Dan_M
>> *Sent:* 10 May 2018 18:04
>> *To:* cp2k
>> *Subject:* Re: [CP2K:10300] Re: MO coefficients not normalized?
>>
>>  
>>
>> Hi Matthias,
>>
>> yest I did but it does not converge, for instance this is what I get when 
>> using Davidson diagonalization (defaults parameters for &MIXING):
>>
>>   Step     Update method      Time    Convergence         Total energy    
>> Change
>>   
>> ------------------------------------------------------------------------------
>>      1 P_Mix/Dav.  0.40E+00    8.1     0.00309369     -2483.1531852407 
>> -2.48E+03
>>      2 P_Mix/Dav.  0.40E+00    2.5     0.15334223     -2483.1531847710  
>> 4.70E-07
>>      3 P_Mix/Dav.  0.40E+00    2.4     0.14839060     -2483.1496260655  
>> 3.56E-03
>>      4 P_Mix/Dav.  0.40E+00    2.4     0.06204907     -2483.1516643558 
>> -2.04E-03
>>      5 P_Mix/Dav.  0.40E+00    2.4     0.72149356     -2483.1519086893 
>> -2.44E-04
>>      6 P_Mix/Dav.  0.40E+00    2.4     0.44697821     -2483.0750573108  
>> 7.69E-02
>>      7 P_Mix/Dav.  0.40E+00    2.4     0.21458187     -2483.1176203039 
>> -4.26E-02
>>      8 P_Mix/Dav.  0.40E+00    2.4     0.09370387     -2483.1338242392 
>> -1.62E-02
>>      9 P_Mix/Dav.  0.40E+00    2.4     1.08948074     -2483.1415463487 
>> -7.72E-03
>>     10 P_Mix/Dav.  0.40E+00    2.4     0.67563179     -2482.9378947719  
>> 2.04E-01
>>     11 P_Mix/Dav.  0.40E+00    2.4     0.32819448     -2483.0539735944 
>> -1.16E-01
>>     12 P_Mix/Dav.  0.40E+00    2.4     0.15275080     -2483.0996929120 
>> -4.57E-02
>>     13 P_Mix/Dav.  0.40E+00    2.4     1.06118539     -2483.1220162257 
>> -2.23E-02
>>     14 P_Mix/Dav.  0.40E+00    2.4     0.77108692     -2482.9213332983  
>> 2.01E-01
>>     15 P_Mix/Dav.  0.40E+00    2.4     0.32374229     -2483.0459012328 
>> -1.25E-01
>>     16 P_Mix/Dav.  0.40E+00    2.4     0.16259590     -2483.0951505330 
>> -4.92E-02
>>     17 P_Mix/Dav.  0.40E+00    2.3     0.10138969     -2483.1193594430 
>> -2.42E-02
>>     18 P_Mix/Dav.  0.40E+00    2.4     0.06424836     -2483.1326526033 
>> -1.33E-02
>>     19 P_Mix/Dav.  0.40E+00    2.4     0.03960077     -2483.1403233567 
>> -7.67E-03
>> ...
>>
>> Similar behavior happens with the other diagonalization flavors, I am 
>> playing around with the mixing parameters but no success so far.
>>
>> In passing there is a curious thing I observed with OT: the wfn is 
>> converged and the eigenvalues are printed in the PDOS but they are not 
>> printed correctly together with the MO coefficients (I request eigenvalues, 
>> eigenvectors and occupations), instead I get:
>>
>>  MO EIGENVALUES, MO OCCUPATION NUMBERS, AND SPHERICAL MO EIGENVECTORS
>>
>>                               1            2            3            4
>>                            0.000000     0.000000     0.000000     0.000000
>>
>>                            2.000000     2.000000     2.000000     2.000000
>>
>>      1     1  H  1s        0.041699    -0.021600     0.017105     0.034420
>>      2     1  H  2s       -0.001594     0.001644    -0.000409    -0.000568
>>      3     1  H  3s       -0.011532     0.007340    -0.005061    -0.008943
>>      4     1  H  4s       -0.005753     0.006757    -0.005764    -0.009668
>> ...
>>
>> For what it is worth, I am using version 5.1 (svn 18091) and the relevant 
>> parts of the electronic structure are these (for the diagonalization I just 
>> turn &OT F and uncomment the relevant parts; also I tried with and without 
>> ADDED_MOS/NLUMO etc etc...)
>>
>> &FORCE_EVAL
>>   METHOD QS
>>   &DFT
>>     CHARGE 1
>>     BASIS_SET_FILE_NAME ./GTH_BASIS_SETS
>>     POTENTIAL_FILE_NAME ./GTH_POTENTIALS
>>     &PRINT
>>       &MULLIKEN ON
>>         &EACH
>>             JUST_ENERGY 1
>>         &END EACH
>>       &END
>>       &HIRSHFELD
>>         &EACH
>>             JUST_ENERGY 1
>>         &END EACH
>>       &END
>>       &MO_CUBES
>>           WRITE_CUBE F
>> !          NLUMO 576
>>       &END
>>       &MO ON
>>         &EACH
>>           JUST_ENERGY 1
>>           QS_SCF 0
>>         &END
>> !        MO_INDEX_RANGE 1 1152
>>         EIGENVALUES
>>         EIGENVECTORS
>>         OCCUPATION_NUMBERS
>>       &END
>>       &PDOS
>>         &EACH
>>           JUST_ENERGY 1
>>         &END
>>         APPEND
>> !        NLUMO 576
>>       &END
>> !      &AO_MATRICES ON
>> !        OVERLAP T
>> !      &END
>>     &END
>>
>>     &MGRID
>>       REL_CUTOFF 70.0
>>       NGRIDS     5
>>       CUTOFF  700.0
>>     &END MGRID
>>     &QS
>>       METHOD GPW
>>       EPS_DEFAULT 1.0E-10
>>       MAP_CONSISTENT
>>     &END QS
>>     &SCF
>>       &PRINT
>>         &RESTART
>>            BACKUP_COPIES 1
>>         &END RESTART
>>       &END PRINT
>>       SCF_GUESS  RESTART
>> !     ADDED_MOS 576 
>>       MAX_SCF 20
>>       EPS_SCF 2.0E-7
>>  !     EPS_LUMO 2.0E-7
>>  !     MAX_ITER_LUMO 10000
>>       &OUTER_SCF
>>         EPS_SCF 2.0E-7
>>         MAX_SCF 300
>>       &END OUTER_SCF
>> !      &MIXING
>> !        ALPHA 0.01
>> !      &END
>> !      &DIAGONALIZATION
>> !        ALGORITHM  DAVIDSON
>> !      &END
>>       &OT T
>>         MINIMIZER DIIS
>>         PRECONDITIONER FULL_KINETIC  !  FULL_ALL
>>         SAFE_DIIS  T
>>       &END OT
>>     &END SCF
>>     &XC
>>       &XC_FUNCTIONAL PBE
>>       &END XC_FUNCTIONAL
>>       DENSITY_CUTOFF     1.0000000000000000E-10
>>       GRADIENT_CUTOFF     1.0000000000000000E-10
>>       TAU_CUTOFF     1.0000000000000000E-10
>>       &XC_GRID
>>         XC_SMOOTH_RHO NN50
>>         XC_DERIV NN50_SMOOTH
>>       &END XC_GRID
>>     &END XC
>>     &POISSON
>>       PERIODIC XYZ
>>     &END POISSON
>>   &END DFT
>>   &SUBSYS
>>     &CELL
>>       ABC 1.5200509080292399E+01  3.3000000000000E+01  
>> 1.3178605533387005E+01
>>       PERIODIC XYZ
>>     &END CELL
>>     &TOPOLOGY
>>       COORD_FILE_NAME ./mystruc.xyz
>>       COORDINATE XYZ
>>     &END TOPOLOGY
>>     &KIND O
>>       BASIS_SET QZV3P-GTH-q6
>>       POTENTIAL GTH-PBE-q6
>>     &END KIND
>>     &KIND H
>>       BASIS_SET QZV3P-GTH-q1
>>       POTENTIAL GTH-PBE-q1
>>     &END KIND
>>     &END
>>   &END SUBSYS
>>   &PRINT
>>     &TOTAL_NUMBERS  ON
>>     &END TOTAL_NUMBERS
>>   &END
>> &END FORCE_EVAL
>>
>>
>> Thanks again and best
>>
>> Daniel
>>
>>
>>
>>
>> El jueves, 10 de mayo de 2018, 14:23:28 (UTC+2), Matthias Krack escribió:
>>
>> Dear Daniel
>>
>>  
>>
>> Did you try to restart with DIAGONALISATION and ADDED_MOS using a 
>> wavefunction restart file from a well-converged OT run?
>>
>>  
>>
>> Best regards
>>
>>  
>>
>> Matthias
>>
>>  
>>
>> *From:* cp... at googlegroups.com [mailto:cp... at googlegroups.com] *On 
>> Behalf Of *Dan_M
>> *Sent:* 10 May 2018 13:46
>> *To:* cp2k
>> *Subject:* [CP2K:10298] Re: MO coefficients not normalized?
>>
>>  
>>
>>
>> Thanks a lot Matt for your very fast answer. I was so concerned with 
>> technical issues that I forgot about the basics.
>>
>> Actually maybe you or some other expert can help me out with the actual 
>> issue I am having. The situation is this:
>>
>> I want to get the MOs (eigenvalues and eigenvectors) for both the 
>> occupied and unoccupied states in a somewhat involved system (~100-200 
>> waters plus one proton, i.e. total charge +1, geometry let's say far from 
>> any local minima). For this I tried two routes:
>>
>> 1) converge the wfn with OT and request NLUMO to be computed after 
>> convergence. With this I find two problems:
>>   - The calculation of the LUMOs does not converge (I get "WARNING : did 
>> not converge in ot_eigensolver" even if I increase MAX_ITER_LUMO to 1000 
>> which I think should be enough). I note that I could get it converged for 
>> EPS_LUMO 1.0E-4 but I tried with a much tighter convergence (2.0E-07 as 
>> with the occupied states) since what I get otherwise is the energy of the 
>> LUMO below that of the HOMO. I am aware of this happening often when the 
>> system is metallic and OT is not well suited but I think it should not 
>> happen in a protonated water system (I would expect finding the LUMO as a 
>> lone state somewhere in the middle of the band gap, but not this).
>>   - Even when it converges (which I managed to do in toy systems but not 
>> on my system of interest), this only works for getting the eigenvalues 
>> which can be done either requesting the NLUMO in the &PDOS or in the 
>> &MO_CUBES sections, but not the eigenvectors even if I try to do the trick 
>> of asking for MO_INDEX_RANGE 1 [nhomo+nlumo] in the &MO section.
>>
>> 2) converge the wfn with diagonalization in any flavor (standard, 
>> davidson, lanczos or filter_matrix) requesting ADDED_MOS. Here the problem 
>> is that the diagonalization is a complete pain and I am struggling a lot to 
>> get it converged, which I did not manage yet. I am trying to do the usual 
>> tricks (playing with the ALPHA in &MIXING, etc), but still I have not 
>> managed to converge it. I tried doing the trick of computing the wfn with 
>> OT and then use that wfn as guess in a run with diagonalization with 
>> ADDED_MOS, but in that case the coefficients seem to be rescaled or ignored 
>> (since there are less MOS in the restart wfn than expected) and I don't get 
>> any improvement.
>>
>> Maybe somebody could give me some tips for improving the diagonalization 
>> in charged systems (some combination of mixing methods, parameters, etc.) 
>> or some workaround to make it work with OT?
>>
>> Thanks again!
>> D.
>>
>>  
>> El miércoles, 9 de mayo de 2018, 22:21:37 (UTC+2), Matt W escribió:
>>
>> Dear Daniel,
>>
>>  
>>
>> the Gaussian basis set is not orthonormal, so the overlap matrix is 
>> required to provide a metric that converts to an orthonormal basis. Due to 
>> symmetry the pz orbital is orthogonal to the others in your example, so in 
>> that case every thing is easy.
>>
>>  
>>
>> In general, the relation is C^T S C = I, where C is the matrix of MO 
>> coefficients, S is the overlap matrix and I is the identity matrix. You can 
>> print of the S matrix and check this. It is somewhere in the AO_MATRICES 
>> section of DFT % PRINT.
>>
>>  
>>
>> See, for instance, Szabo and Ostlund, Modern Quantum Chemistry, 
>> Introduction to Advanced Electronic Structure Theory - exercise 3.10 in my 
>> version.
>>
>>  
>>
>> Matt
>>
>> On Wednesday, May 9, 2018 at 8:20:13 PM UTC+1, Dan_M wrote:
>>
>> Dear all,
>>
>> After requesting the printing out of the MO coefficients, I have observed 
>> that the coefficients do not seem to be normalized. For instance, here are 
>> the MOs for 1 water molecule with a SZV basis (after a single point 
>> calculation on the "real" geometry, with diagonalization algorithm 
>> standard):
>>
>>  MO EIGENVALUES, MO OCCUPATION NUMBERS, AND SPHERICAL MO EIGENVECTORS
>>
>>                               1              2                3         
>>        4
>>                            -0.952554    -0.496599    -0.304175    
>> -0.250528
>>
>>                             2.000000     2.000000     2.000000     
>> 2.000000
>>
>>      1     1  O  2s        0.807460    -0.000000     0.542312     0.000000
>>      2     1  O  3py      -0.246487    -0.000000     0.810927     0.000000
>>      3     1  O  3pz      -0.000000     0.000000    -0.000000     1.000000
>>      4     1  O  3px       0.000000    -0.661844    -0.000000    -0.000000
>>
>>      5     2  H  1s        0.125677    -0.390214    -0.194623    -0.000000
>>
>>      6     3  H  1s        0.125677     0.390214    -0.194623    -0.000000
>>
>> So only the MO 4 is trivially normalized, but the others are not. Am I 
>> missing something (some correction factor, etc) or is this just the way it 
>> is?
>>
>> Thanks and best
>> Daniel
>>
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