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How to set broken‑symmetry state?
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7
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183
|
November 17, 2025
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Problem oxygen potential energy scan using CCSD(T) and EA state PES using EA-EOM-CCSD
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11
|
578
|
November 11, 2025
|
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“double free or corruption (out)” error in TDDFT + EFP job with large number of fragments
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1
|
160
|
November 9, 2025
|
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Cannot escape an imaginary frequency
|
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1
|
203
|
November 7, 2025
|
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Limited support for analytic Hessians in Q-Chem
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10
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949
|
November 6, 2025
|
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How does IQmol calculate the center of mass of a molecule?
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1
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197
|
November 1, 2025
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TSVDW and MBD crashes
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1
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175
|
October 30, 2025
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Unexpected behaviour: core orbitals are not frozen during MP2/MP3 step in ADC calculations
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4
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343
|
October 27, 2025
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SCF convergence issue with diffuse functions on basis set
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27
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655
|
October 22, 2025
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Crash upon frequency calculations with range separated bybrid
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1
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272
|
October 21, 2025
|
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Cryptic import_xcfunc warning
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10
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411
|
October 20, 2025
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What sort of RI techniques are safe to use with different types of SCF?
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3
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300
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October 16, 2025
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RI worsens SCF timings
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4
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346
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October 16, 2025
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EOMCCSDT calculations
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2
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347
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September 29, 2025
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Question on calculating IPs (cationic states) for L-shell orbitals with IP-EOM-CCSD or ADC(3)
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14
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366
|
October 9, 2025
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Is CVS approximation available for IP-ADC(3)?
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0
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256
|
October 9, 2025
|
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Single Point immediately fails with DM alg and AUTOSAD guess
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4
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302
|
October 8, 2025
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Keywords for printing <S^2> values using unrestricted TDDFT (RPA=2)
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2
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455
|
October 7, 2025
|
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Clarification on RASSCF Calculation of Multiple Spin States in Q-Chem
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2
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322
|
October 6, 2025
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Fchk file size increased with Q-Chem 6.1?
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4
|
782
|
October 3, 2025
|
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Irreducible representation of electrons
|
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1
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284
|
October 3, 2025
|
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Saving SCF Metadynamics Solutions
|
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0
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277
|
October 2, 2025
|
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Are there specific command to print the gradient matrix?
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6
|
381
|
October 2, 2025
|
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Unkown error encountered in a ET coupling calculation using CC2
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1
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342
|
October 1, 2025
|
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EOM-CCSD job FOR SINGLET TRIPLET STATE in Q-Chem stuck during SCF convergence
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1
|
460
|
October 1, 2025
|
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How to find the radial shells?
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1
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289
|
September 30, 2025
|
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Multiple simultaneous Field_Types?
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3
|
300
|
September 30, 2025
|
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Different (larger) SCF energy compared to other software (Orca, C4) when using an augmented (aug-cc-pVDZ) basis set
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7
|
518
|
September 29, 2025
|
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Printing T and R amplitudes in (EOM-)CCSD calculation
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2
|
523
|
September 28, 2025
|
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QCHEM licence under wsl2 ubuntu system
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1
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271
|
September 27, 2025
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