Re: [QE-users] qe-6.4: problem with fs.x

2019-03-15 Thread Paolo Giannozzi
On Fri, Mar 15, 2019 at 6:57 PM Sylwia Golab wrote: > > the program fs.x in the qe-6.4 package gives me a messages: > > * Message from routine pw_readschema_file: failed retrieving input > info from xml file, please check it* > are you using Intel v.12? it should not be a problem, the

Re: [QE-users] How to calculate water molecule energy at large cell size?

2019-03-15 Thread Paolo Giannozzi
SCAN is numerically better behaved than other Meta-GGA's, but cells with a lot of empty space are still problematic. See for instance this: https://gitlab.com/QEF/q-e/issues/32 Paolo On Fri, Mar 15, 2019 at 1:55 AM ? ?? wrote: > Hello, > > > > My question is how to calculate scf energy of

Re: [QE-users] Negatively charged isolated molecule

2019-03-15 Thread Michal Krompiec
Dear Ernane, Have you thought of using a more sophisticated method (like GW) on [CO3]- to calculate its EA? This would give you the energy of [CO3]2- in vacuum. Best, Michal Krompiec University of Southampton & Merck KGaA On Fri, 15 Mar 2019 at 18:22, Ernane de Freitas Martins wrote: > Dear

Re: [QE-users] Negatively charged isolated molecule

2019-03-15 Thread Ernane de Freitas Martins
Dear Giuseppe, I really appreciate your answer. Thank you very much for using your time to answer my question. I'll think on your suggestion about trying hybrid functionals. The point is that I need to estimate the solvation energy for carbonate ion using the environ module, then I'll need to

Re: [QE-users] Negatively charged isolated molecule

2019-03-15 Thread Giuseppe Mattioli
Dear Ernane Your question contains part of the answer! Carbonate ion (CO3 2-) is not stable outside water, and calculations of its properties in gas phase are likely not so meaningful, but in the case of model thermodynamics cycles (e.g. Born-Haber). The excess negative charge is unbound

[QE-users] qe-6.4: problem with fs.x

2019-03-15 Thread Sylwia Golab
Dear all, the program fs.x in the qe-6.4 package gives me a messages: Message from routine pw_readschema_file: failed retrieving input info from xml file, please check it and: 1 bands found crossing Ef =0.00 so it cannot read Fermi energy. As far as I understand, the

[QE-users] Negatively charged isolated molecule

2019-03-15 Thread Ernane de Freitas Martins
Hello, I'm experiencing a problem to run a negatively charge molecule in quantum espresso. The system is CO32-. I try both vacuum and solvated (environ) calculations. The solvated one works fine. The problem is the calculation in vacuum. It never give the first ionic step because the SCF

Re: [QE-users] How to calculate water molecule energy at large cell size?

2019-03-15 Thread Giuseppe Mattioli
Dear Jing When reporting errors you should also share the whole input file. Otherwise nobody will be able to help you. HTH Giuseppe ? ?? ha scritto: Hello, My question is how to calculate scf energy of water molecule in large cell size of 12 angstrom. The energy cutoff is at 160 ry.

Re: [QE-users] hai,

2019-03-15 Thread yasmin kani
thank you Professor On Fri, Mar 15, 2019 at 3:40 AM Paolo Giannozzi wrote: > You are thinking to the so-called "conventional" (simple cubic) cell, but > QE uses the "primitive" (smallest) cell > > Paolo > > On Thu, Mar 14, 2019 at 7:17 PM yasmin kani wrote: > >> I can't understand the concept