<div dir="ltr"><div><div>Dear Wien2k users I want to optimize the the tetragonal structure of SnO2 with space group 136_P42/mnm, the error of OPT_vol_-5.0 <br><br></div>Stop error will occure at the start, please help me, What should i do to overcome this error<br><br></div><div>Thanks and and regards<br></div><div>qasim <br></div><div><div><div><div><div><div class="gmail_signature"><div dir="ltr"><div><div><br><br><br><br><br><br><b><i><span style="color:rgb(0,0,255)"><br><br><br><br><br><br><br><br><br><br>Mr.Qasim Mahmood<br></span></i></b></div><b><i><span style="color:rgb(0,0,255)">Ph.D Schollar, PU,Lahore,Pakistan</span></i></b><br></div></div></div></div>
</div></div></div></div></div>