CCL:G: Gaussian09 NMR calculation fails for ethylene RESOLVED



 Sent to CCL by: Matthias Rupp [matthias.rupp_+_unibas.ch]
 Dear Jonathan,
 thank you, this resolved the issue. If I enforce perfect symmetry, Gaussian runs
 successfully.
 This is also consistent with what Gaussian support wrote me in the meantime:
 "The structure is very slightly off the D2h symmetry probably almost at the
 threshold of a lower point group.
 If you want to run this job with the higher symmetry (D2h), you may use
 "Symm=Loose" to shift the thresholds
 to a more tolerant deviation from symmetry. [...] If you want to turn off
 symmetry completely, then you may use
 "Symm=None" and the program will not attempt to assign symmetry so you
 would not go through this part of the code.
 
With "NoSymm" the program still tries to assign the symmetry point group, even if [...] not used in the rest of the calculation."
 Indeed, specifying "symm=none" also resolves the problem.
 All the versions and variants of running Gaussian yield essentially the same
 chemical shifts.
 Thanks everyone,
 Matthias Rupp
 On 2014-07-10 21:10, Jonathan Sheehan jonathan.sheehan|,|gmail.com wrote:
 
 Sent to CCL by: Jonathan Sheehan [jonathan.sheehan%gmail.com]
 Hi Mattias,
 I noticed that your fourth cartesian coordinate looks unusually long:
 On Thu, Jul 10, 2014 at 4:26 AM, Matthias Rupp
 matthias.rupp..unibas.ch <owner-chemistry,ccl.net> wrote:
 
 0    1
 6    0.    0.661966    0.
 6    0.    -0.661966    0.
 1    -0.923311    1.231832    0.
 1    0.923311    1.2318330000000002    0.
 1    -0.923311    -1.231832    0.
 1    0.923311    -1.231832    0.
 
 When I remove the nine extra 0 characters, the job runs without error
 for me (same G09 version). Were those digits intentional, or perhaps
 added accidentally?