<div dir="ltr"><div>Dear Yingchun,</div><div><br></div><div>The default MULTIPLICITY value of 0 evaluates to 1 in the case of an even number of electrons (singlet) and to 2 in the case of an odd number of electrons (doublet).</div><div><br></div><div>Yours sincerely,</div><div>Patrick Gono<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Nov 5, 2019 at 3:43 PM Yingchun Zhang <<a href="mailto:zhangyin...@126.com">zhangyin...@126.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">what do you mean with " MULTIPLICITY 0" in your input file, it's 2s+1</div>
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