Search found 171 matches

by kennethruud
27 Jun 2020, 08:23
Forum: Running Dalton
Topic: NMR calculation of Si(CH3)4 not converged
Replies: 26
Views: 608

Re: NMR calculation of Si(CH3)4 not converged

Could you post the entire output file? I am somewhat puzzled by your input, as you ask for 6 spheres to be used, but you have only five heavy atoms in the Si(CH3)4. You also you use a fairly large AREATS.

Kenneth
by kennethruud
12 Apr 2020, 11:16
Forum: Running Dalton
Topic: Calculating response prorperty for more than 30 frequencies
Replies: 4
Views: 624

Re: Calculating response prorperty for more than 30 frequencies

Getting the imaginary components of the polarizability is what the Complex Polarization Propagator/Damped Response Theory functionality will be able to give you.

Kenneth
by kennethruud
12 Apr 2020, 09:04
Forum: Running Dalton
Topic: Calculating response prorperty for more than 30 frequencies
Replies: 4
Views: 624

Re: Calculating response prorperty for more than 30 frequencies

Yes, 30 is the default maximum number of frequencies that can be run in a conventional linear response calculation. You can reset this by changing MFREQ in the file include/infrsp.h. An alternative is of course to do 30 frequencies in each calculation, and do separate calculations and restart from t...
by kennethruud
11 Apr 2020, 13:02
Forum: Running Dalton
Topic: TPA Relative Photon Polarizations
Replies: 1
Views: 399

Re: TPA Relative Photon Polarizations

Hi!

The two photons given in the expression for the linear polarization are both parallel to each other.


Best regards,

Kenneth
by kennethruud
04 Mar 2020, 08:41
Forum: Running Dalton
Topic: Using electronic wavefunction after NEVPT2 correction for response
Replies: 4
Views: 3086

Re: Using electronic wavefunction after NEVPT2 correction for response

The NEVPT2 energy correction has only been implemented as that, an energy correction, and not as correction to the wave function. No properties have been implemented for the NEVPT2 approximation.


Best regards,

Kenneth
by kennethruud
01 Mar 2020, 21:13
Forum: Running Dalton
Topic: Excited state second hyperpolarizability
Replies: 8
Views: 2341

Re: Excited state second hyperpolarizability

My error, .STATE should be under *OPTIMIZATION, i.e.

....
*OPTIMIZATION
.STATE
2 <- second (first excited) state of symmetry 1
*CONFIGURATION INPUT
.SYMMETRY
1 <- symmetry of the excited state
.SPIN MULTIPLICITY
1
......
by kennethruud
09 Feb 2020, 22:19
Forum: Running Dalton
Topic: Excited state second hyperpolarizability
Replies: 8
Views: 2341

Re: Excited state second hyperpolarizability

In the
**WAVE FUNCTION
....
*CONFIGURATION
.SYMMETRY
2 <- Symmetry of the excited state
.STATE
2 <- Second state (i.e. first excited state) of symmetry 2.

See Dalton 2018 manual pages 294-299.

Kenneth
by kennethruud
05 Feb 2020, 06:40
Forum: Running Dalton
Topic: Excited state second hyperpolarizability
Replies: 8
Views: 2341

Re: Excited state second hyperpolarizability

CO2 is small enough that you may consider also doing an MCSCF calculation, selecting the excited state of interest as the reference state. You can then get the second hyperpolarizability by performing a MCSCF cubic response calculation.
by kennethruud
09 Jan 2020, 21:29
Forum: Running Dalton
Topic: RSPCTL WARNING-MAXIMUM NUMBER OF MICROITERATIONS
Replies: 11
Views: 2490

Re: RSPCTL WARNING-MAXIMUM NUMBER OF MICROITERATIONS

The INFO statement is in this case basically only telling you that there are lower excited states (and the ground state) below the state for which you are calculating matrix elements, so this is normal for such a calculation. I cannot see how removing .TDA (which is what I assume you have done, not ...
by kennethruud
31 Dec 2019, 16:44
Forum: Running Dalton
Topic: Conversion of PBEPBE and pbex
Replies: 6
Views: 3114

Re: Conversion of PBEPBE and pbex

Not in a quadratic response calculation. The problem is that there you will need derivatives of the exchange-correlation kernels which have not been implemented for this functional. LSDalton will be able to do this in principle, since it uses the XCFun library to generate the necessary XC kernel der...
by kennethruud
30 Dec 2019, 20:24
Forum: Running Dalton
Topic: Conversion of PBEPBE and pbex
Replies: 6
Views: 3114

Re: Conversion of PBEPBE and pbex

As the error message states, it is not possible to use this functional in quadratic response calculations. Please consider using a different functional.
by kennethruud
25 Jul 2019, 07:21
Forum: Running Dalton
Topic: Dimensioning or labelling error (ESR calc)
Replies: 7
Views: 5269

Re: Dimensioning or labelling error (ESR calc)

Oops, apparently I can't see the forest for all the trees.

Ok, so it requires that I check whether I still know how to compile the program ;-)......

Kenneth
by kennethruud
24 Jul 2019, 09:34
Forum: Running Dalton
Topic: Dimensioning or labelling error (ESR calc)
Replies: 7
Views: 5269

Re: Dimensioning or labelling error (ESR calc)

Hi, Pete! Do you need the hyperfine coupling tensors, or do you only want the nitrogen hyperfine coupling? If the latter, you can check out the keyword .ATOMS in the *ESR section (Chapter 30.1.12) to only select the nitrogen atom (and place it first in your molecular input). I am puzzled by the labe...
by kennethruud
23 Jul 2019, 12:14
Forum: Running Dalton
Topic: ZMAT and Symmetry
Replies: 13
Views: 7655

Re: ZMAT and Symmetry

Hi! I am a little bit uncertain what your actual question is, but in general Dalton provides little support for the use of Z-matrices, and they are mainly provided for those that really do not want to work with Cartesian coordinates. The internal handling of symmetry in Dalton is all based on simple...
by kennethruud
18 Apr 2019, 08:19
Forum: Running Dalton
Topic: Determining the Effective geometry for vibrational effects
Replies: 5
Views: 2326

Re: Determining the Effective geometry for vibrational effects

There is an "Estimated effective geometry" printed in the output file (admittedly somewhat hidden as it comes before the final vibrational analysis). Are you saying this estimated effective geometry is identical to your starting geometry? Because otherwise I would say it seems the calculation has co...
by kennethruud
16 Apr 2019, 10:11
Forum: Running Dalton
Topic: Determining the Effective geometry for vibrational effects
Replies: 5
Views: 2326

Re: Determining the Effective geometry for vibrational effects

Could you perhaps also post your output file?

Kenneth
by kennethruud
11 Mar 2019, 09:41
Forum: Running Dalton
Topic: CC3/aug-cc-pVTZ linear response segfaults
Replies: 18
Views: 6479

Re: CC3/aug-cc-pVTZ linear response segfaults

This error is often a symptom of too little memory in the calculation or on the compute cluster. Try increase the memory for the calculation.


Best regards,

Kenneth
by kennethruud
30 Dec 2018, 13:38
Forum: Running Dalton
Topic: Phosphorescence calculation: symmetry problems for C1 molecule
Replies: 8
Views: 3996

Re: Phosphorescence calculation: symmetry problems for C1 molecule

Use NoSymmetry on the line of the input where you give the number of Atomtypes, see Section 27.1 of the Dalton 2018 manual.


Kenneth
by kennethruud
30 Dec 2018, 12:43
Forum: Running Dalton
Topic: Phosphorescence calculation: symmetry problems for C1 molecule
Replies: 8
Views: 3996

Re: Phosphorescence calculation: symmetry problems for C1 molecule

Could you please provide the output file? And please note that once you introduce symmetry, you need to make sure you include roots (excited states) in the relevant irreps (one number for each irrep on the line following .ROOTS).
by kennethruud
30 Dec 2018, 10:03
Forum: Running Dalton
Topic: Phosphorescence calculation: symmetry problems for C1 molecule
Replies: 8
Views: 3996

Re: Phosphorescence calculation: symmetry problems for C1 molecule

The program will calculate the necessary one-electron integrals on its own, so you can remove the keyword .SPIN-ORBIT under **INTEGRALS.

Best regards,

Kenneth
by kennethruud
29 Dec 2018, 19:22
Forum: Running Dalton
Topic: Phosphorescence calculation: symmetry problems for C1 molecule
Replies: 8
Views: 3996

Re: Phosphorescence calculation: symmetry problems for C1 molecule

Hi! You also need to specify the number of excited states you want to consider using the keyword .ROOTS, and this is probably which is the reason for the failure of your calculation. I note you use the .SPIN-ORBIT keyword. This will calculate both one- and two-electron spin-orbit integrals. With alm...
by kennethruud
20 Nov 2018, 22:46
Forum: Running Dalton
Topic: Only PCM CH2CL2 fails
Replies: 20
Views: 6778

Re: Only PCM CH2CL2 fails

Dear Terri, I note you use a sphere on each individual atom. This is in general not recommended and may lead to the errors you observe for larger molecules. I would recommend only using a sphere on the heavy (that is, carbon) atoms, using a radius of 2.28 Å (in order to get this, you should also set...
by kennethruud
01 Nov 2018, 17:40
Forum: Running Dalton
Topic: Trying to calculate optical rotation
Replies: 5
Views: 4002

Re: Trying to calculate optical rotation

The optical rotation reported is the specific optical rotation, which is given in degrees/(dm g/cm^3).


Kenneth
by kennethruud
15 Oct 2018, 14:24
Forum: Running Dalton
Topic: Error calculating polarizability for hydrogen α (i ω) exit code 139
Replies: 10
Views: 4759

Re: Error calculating polarizability for hydrogen α (i ω) exit code 139

The reason for the crash is no doubt that your trying to calculate an open-shell system. However, this also suggests that the calculations you have done for oxygen and carbon are probably been calculated as closed-shell system, thus not representative of the atoms you want to study. Dalton has limit...
by kennethruud
04 Aug 2018, 16:22
Forum: Running Dalton
Topic: Project small basis set on larger one
Replies: 7
Views: 4440

Re: Project small basis set on larger one

That functionality is, as Hans Jørgen points out, currently not available. It is not clear how much of a computational saving you would get from this. If you struggle with convergence with the larger (and possibly diffuse) basis sets, it could be just as efficient to try to first optimize the +2 cat...