<div dir="ltr"><div>Dear Wien2k users,<br></div><div><br></div><div> I guess the answer may be that<b> ni and nj are the occupancies of the d-electrons, however not the number of d-electron itself</b>. <b>ni and nj are not zero for Ti+4 state in TiO2</b>. Is it so?</div><div><br></div><div>with regards,</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 19 Feb 2021 at 20:02, shamik chakrabarti <<a href="mailto:shamik15041981@gmail.com">shamik15041981@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Dear Wien2k users,<div> I am interested in calculating the reaction energy for the equation </div><div> 2 TiO2 + H2 = Ti2O3 + H2O</div><div>In this case, I should use U for Ti in Ti2O3. However, in earlier research works it has been given that the same U should also be used for Ti in TiO2.</div><div><br></div><div>My query is as Ti exists as +4 state in TiO2 why at all we need to use U for it?</div><div><br></div><div>We know EU = U/2 SUM (ni, nj), however as ni & nj is zero for Ti in TiO2 why should we also need to use U for Ti in TIO2?</div><div><br></div><div>Waiting forward to your response. Thanks in advance.</div><div><br></div><div>with regards,</div><div><br></div><div>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="font-size:small">Dr. Shamik Chakrabarti</div><div style="font-size:small">Research Fellow </div><div style="font-size:small">Department of Physics</div><div style="font-size:small">Indian Institute of Technology Patna</div><div style="font-size:small">Bihta-801103</div><div style="font-size:small">Patna</div><div style="font-size:small">Bihar, India</div></div></div></div></div></div></div></div></div></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="font-size:small">Dr. Shamik Chakrabarti</div><div style="font-size:small">Research Fellow </div><div style="font-size:small">Department of Physics</div><div style="font-size:small">Indian Institute of Technology Patna</div><div style="font-size:small">Bihta-801103</div><div style="font-size:small">Patna</div><div style="font-size:small">Bihar, India</div></div></div></div></div></div></div></div>