<div dir="ltr">Is it possible to calculate transition moments in a state-averaged CASPT2 calculation?<div><br></div><div>The manual states in section 21.1 "<span style="font-family:NimbusRomNo9L;font-size:11pt">the calculation of CASPT2/RASPT2 density matrices (and therefore molecu-
lar properties) is presently possible only with the RS2 command..."</span></div><div><span style="font-family:NimbusRomNo9L;font-size:11pt"><br></span></div><div>And so I would think that transition moments could be calculated (with rs2), but there aren't any explicit instructions in chapter 21. Careful reading seems to hint that a lot of the MRCI commands will work in CAPT2 calcs however. </div>
<div><br></div><div>Thus, I'm currently trying the commands that are explicitly mentioned for one-electron properties in the CI chapter, chapter 20. Specifically sections 20.3.13 and 20.3.14 (EXPEC and TRANS). Although now I wonder where CASPT2 saves its wavefunctions for use in TRANS. Or if I have to do that manually with a SAVE command. </div>
<div><br></div><div>Anyways, any help/confirmation would be nice so that I don't fumble around in the dark too much.</div><div><br></div><div>Thanks,</div><div>ALan CHien</div><div><span style="font-family:NimbusRomNo9L;font-size:11pt"><br>
</span></div><div><span style="font-family:NimbusRomNo9L;font-size:11pt">ps - All section numbers are from Molpro User Manual 2012.1 </span></div></div>