Rene, if you can put some sample QChem UHF files in the data directory that
illustrate this, it would be helpful.

Bob


2010/8/19 René Kanters <[email protected]>

> Hi Bob,
>
> Since the calculation is restricted the alpha and beta orbitals are exactly
> the same. Only for restricted open shell or unrestricted calculations are
> their differences only in the singly occupied (and virtual) orbitals for the
> former and for the latter all alphas and betas can be (and usually are)
> different.
>
>
right, I see. I still don't see why the discrepency in number of orbitals.


> I haven't checked the code, but I think I am collecting in the 'Alpha MOs,
> Restricted' line the latter word to find out whether it was really
> restricted, in which case I am not even looking for the betas: therefor 1
> set of only alpha orbitals.
>
> I hope that helps.
>
> René
>
> On Aug 19, 2010, at 12:28 PM, Robert Hanson wrote:
>
> I think part of the problem was that with some of the really high level
> calculations there can be hundreds of alpha and beta orbitals. The
> filterMO() method is in MOReader, so it is common to any file implementing
> NBOs, Gamess, Gaussian, Jaguar, QChem, GenNBO, and Psi. That's what picks up
> on the filter "BETA" business. As for QChem, it's not set up to recognize
> alpha/beta mixes yet.
>
> Rene, in benzene-B3LYP-631Gd.out (data files) can you explain to me how
> these sections match up?
>
> --------------------------------------------------------------
> User input:
> --------------------------------------------------------------
> $comment
>   benzene RB3LYP/6-31G*
> $end
> ...
> $rem
>   jobtype             OPT
>   exchange            B3LYP
>   basis               6-31G*
>   unrestricted        FALSE
>   print_general_basis TRUE
>   print_orbitals      TRUE
> $end
> ...
>  Alpha MOs, Restricted
>  -- Occupied --
> -10.188 -10.188 -10.188 -10.187 -10.187 -10.187  -0.846  -0.740
>   1 A1g   1 E1u   1 E1u   1 E2g   1 E2g   1 B1u   2 A1g   2
> E1u
>  -0.740  -0.597  -0.597  -0.519  -0.459  -0.438  -0.417  -0.417
>   2 E1u   2 E2g   2 E2g   3 A1g   2 B1u   1 B2u   3 E1u   3
> E1u
>  -0.359  -0.340  -0.340  -0.246  -0.246
>   1 A2u   3 E2g   3 E2g   1 E1g   1
> E1g
>  -- Virtual --
>   0.004   0.004   0.091   0.145   0.145   0.164   0.182   0.182
>   1 E2u   1 E2u   4 A1g   4 E1u   4 E1u   1 B2g   4 E2g   4
> E2g
> ....
>
>  Beta MOs, Restricted
>  -- Occupied --
> -10.188 -10.188 -10.188 -10.187 -10.187 -10.187  -0.846  -0.740
>   1 A1g   1 E1u   1 E1u   1 E2g   1 E2g   1 B1u   2 A1g   2
> E1u
>  -0.740  -0.597  -0.597  -0.519  -0.459  -0.438  -0.417  -0.417
>   2 E1u   2 E2g   2 E2g   3 A1g   2 B1u   1 B2u   3 E1u   3
> E1u
>  -0.359  -0.340  -0.340  -0.246  -0.246
>   1 A2u   3 E2g   3 E2g   1 E1g   1
> E1g
>  -- Virtual --
>   0.004   0.004   0.091   0.145   0.145   0.164   0.182   0.182
>   1 E2u   1 E2u   4 A1g   4 E1u   4 E1u   1 B2g   4 E2g   4
> E2g
> ...
>
>                         RESTRICTED (RHF) MOLECULAR ORBITAL COEFFICIENTS
>                          1         2         3         4         5
> 6
>  eigenvalues:        -10.188   -10.188   -10.188   -10.187   -10.187
> -10.187
>                          7         8         9        10        11
> 12
>  eigenvalues:         -0.846    -0.740    -0.740    -0.597    -0.597
> -0.519
>                         13        14        15        16        17
> 18
>  eigenvalues:         -0.459    -0.438    -0.417    -0.417    -0.359
> -0.340
>                         19        20        21        22        23
> 24
>  eigenvalues:         -0.340    -0.246    -0.246     0.004     0.004
> 0.091
>                         25        26
>  eigenvalues:          0.145     0.145
>
>
> Why just 26 orbitals? Are they "alpha" or "beta"?
>
>
>
> 2010/8/19 René Kanters <[email protected]>
>
>> I believe that that is different than what is done in the qchem reader
>> where both sets of orbitals are read by default. At least that is the way I
>> initially implemented it. The tricky part with that is that the number of
>> MOs is doubled and you have to know what the number of the highest alpha one
>> is to say which MO you want to show for the betas (unless you use the popup
>> where the energies may help).
>>
>> Would it make sense to have a separate list of beta MOs 'parallel' to the
>> alpha ones and use for the restricted cases (or cases where the output only
>> provides one set of orbitals) as the default set of orbitals. That way you
>> could ask for the 3rd beta MO using 3 is the MO index?
>>
>> Just a thought.
>>
>> René
>>
>> On Aug 19, 2010, at 9:31 AM, Robert Hanson wrote:
>>
>> I just updated the GAMESS reader so that it would work with files that
>> include a line "LZ VALUES..." just after the alpha set, and I noticed that
>> as well. Yes, it was deliberately set that way --- that beta orbitals are
>> not read by default. To read the BETA orbitals, use
>>
>> load "xxxxx.out" filter "BETA"
>>
>> probably needs documentation....
>>
>> Will that do?
>>
>> Bob
>>
>>
>> On Thu, Aug 19, 2010 at 7:41 AM, Jonathan Gutow <[email protected]> wrote:
>>
>>> It appears we have more problems than just the slight change in file
>>> format...At some point we changed things so that in UHF files (even the old
>>> format) the beta set of orbitals is not read.  I guess I haven't checked
>>> this in about 6-8 months.  Bob, I may need you to help me on this.
>>>
>>> Jonathan
>>>                         Dr. Jonathan H. Gutow
>>> Chemistry Department                                [email protected]
>>> UW-Oshkosh                                          Office: 920-424-1326
>>> 800 Algoma Boulevard                                FAX:920-424-2042
>>> Oshkosh, WI 54901
>>>                http://www.uwosh.edu/facstaff/gutow
>>>
>>>
>>>
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>>
>>
>>
>> --
>> Robert M. Hanson
>> Professor of Chemistry
>> St. Olaf College
>> 1520 St. Olaf Ave.
>> Northfield, MN 55057
>> http://www.stolaf.edu/people/hansonr
>> phone: 507-786-3107
>>
>>
>> If nature does not answer first what we want,
>> it is better to take what answer we get.
>>
>> -- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900
>> <ATT00001..txt><ATT00002..txt>
>>
>>
>>
>>
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>
>
> --
> Robert M. Hanson
> Professor of Chemistry
> St. Olaf College
> 1520 St. Olaf Ave.
> Northfield, MN 55057
> http://www.stolaf.edu/people/hansonr
> phone: 507-786-3107
>
>
> If nature does not answer first what we want,
> it is better to take what answer we get.
>
> -- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900
> <ATT00001..txt><ATT00002..txt>
>
>
>
>
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-- 
Robert M. Hanson
Professor of Chemistry
St. Olaf College
1520 St. Olaf Ave.
Northfield, MN 55057
http://www.stolaf.edu/people/hansonr
phone: 507-786-3107


If nature does not answer first what we want,
it is better to take what answer we get.

-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900
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