<div dir="ltr"><div>Dear All</div><div>I want to calculate IR spectrum for a system composed of C, H and O atom. I have calculated the scf, however, in the second step, for the calculation of phonons, effective charges, and Raman coefficients at wavevector <b>q</b>=(0,0,0), I always get empty dyn file though I can obtain the output file normally.</div>
<div>I used <span lang="EN-CA"> H_blyp-van_ak.UPF , C_blyp-van_ak.UPF
and O_blyp-van_ak.UPF pseudopotential files.</span></div><div><span lang="EN-CA"></span><br clear="all"> </div><div> </div><div>Here is my input:</div><span lang="EN-CA"><p>Normal modes for CO2-H2</p><div>
</div><p> &inputph</p><div>
</div><p> tr2_ph=1.0d-14</p><div>
</div><p> prefix='CO2-H2'</p><div>
</div><p> amass(1)=1.000</p><div>
</div><p> amass(2)=12.000</p><div>
</div><p> amass(3)=16.000</p><div>
</div><p> outdir ='./tmp/' </p><div>
</div><p> trans =.true. </p><div>
</div><p> asr =.true.</p><div>
</div><p> fildyn ='CO2-H2.dyn'</p><div>
</div><p> /</p><div>
</div><p> 0.0 0.0 0.0</p><div></div></span><div>thanks in advance.</div><div>Xue<br><br></div><div>Ms. Xue Yong(雍雪)<br>Department of Physics and Engineering Physics<br>University of Saskatchewan<br>116 Science Place<br>
Saskatoon, SK S7N 5E2<br>Canada</div><div>Tel: +1 306 261 2369</div>
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