<div dir="ltr">Dear all,<div><br></div><div>I optimized the H2 system with tighter convergence criteria</div><div> EPS_SCF 1E-8</div><div> MAX_FORCE 5E-5</div><div><br></div><div>Then I use following script to calculate the vibration frequency:</div><div><br></div><div><div>&VIBRATIONAL_ANALYSIS</div><div> INTENSITIES</div><div> NPROC_REP 16</div><div> DX 0.001</div><div> &MODE_SELECTIVE</div><div> &INVOLVED_ATOMS</div><div> INVOLVED_ATOMS 1 2</div><div> &END INVOLVED_ATOMS</div><div> &END MODE_SELECTIVE</div><div> &PRINT</div><div> &PROGRAM_RUN_INFO ON</div><div> &END</div><div> &END</div><div> &END</div></div><div><br></div><div>I get the vibration is 429.830 <span style="font-variant-ligatures: no-common-ligatures; font-family: Menlo; font-size: 14px;">1221.671 </span><span style="font-variant-ligatures: no-common-ligatures; font-family: Menlo; font-size: 14px;">2595.744 </span><span style="font-variant-ligatures: no-common-ligatures; font-family: Menlo; font-size: 14px;"> </span><span style="font-variant-ligatures: no-common-ligatures; font-family: Menlo; font-size: 14px;">5189.575</span></div><div><br></div><div><span style="font-variant-ligatures: no-common-ligatures; font-family: Menlo; font-size: 14px;"><br></span></div>
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<div>But when I delete the &MODE_SELECTIVE session using </div><div>&VIBRATIONAL_ANALYSIS</div><div> INTENSITIES</div><div> NPROC_REP 16</div><div> DX 0.001</div><div> &PRINT</div><div> &PROGRAM_RUN_INFO ON</div><div> &END</div><div> &END</div><div> &END</div><div>I get different vibration <span style="font-variant-ligatures: no-common-ligatures; font-family: Menlo; font-size: 14px;">22.484153</span><span style="font-variant-ligatures: no-common-ligatures; font-family: Menlo; font-size: 14px;"> </span><span style="font-variant-ligatures: no-common-ligatures; font-family: Menlo; font-size: 14px;"> </span><span style="font-variant-ligatures: no-common-ligatures; font-family: Menlo; font-size: 14px;">22.484154</span><span style="font-variant-ligatures: no-common-ligatures; font-family: Menlo; font-size: 14px;"> </span><span style="font-variant-ligatures: no-common-ligatures; font-family: Menlo; font-size: 14px;">3556.728838</span><br></div><div><span style="font-variant-ligatures: no-common-ligatures; font-family: Menlo; font-size: 14px;"><br></span></div><div><span style="font-family: Menlo; font-size: 14px; font-variant-ligatures: no-common-ligatures;">How does the MODE_selective affects the vibration?</span><span style="font-variant-ligatures: no-common-ligatures; font-family: Menlo; font-size: 14px;"><br></span></div>
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<div><br></div><div>I have attached the input and output files for geometry optimization and vibration frequency analysis.</div><div><br></div><div>Sorry to bother you and thanks for your help! <br></div><div>Jiamin Wang</div><div><br></div>
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