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  Cartesian force constants read from checkpoint file:
  04-ac.chk
  Length of force constants on CHK file is     0 NAT3TT is   231
  Error termination via Lnk1e in /chimie/soft/g09/l103.exe

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%chk=04-ac
# B3LYP/6-31+G(d,p) TD=(Read,NStates=6,Root=1) SCRF=(Solvent=Ethanol)
  Geom=Modify Guess=Read Opt=RCFC

Acetaldehyde: excited state opt
Modify geometry to break Cs symmetry
since first excited state is A"

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# B3LYP/6-31+G(d,p) TD=(Read,NStates=6,Root=1) SCRF=(Solvent=Ethanol)
  Geom=Modify Guess=Read Opt

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2Â¥: Originally posted by Illusionist at 2012-04-09 10:24:43:
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# B3LYP/6-31+G(d,p) TD=(Read,NStates=6,Root=1) SCRF=(Solvent=Ethanol)
  Geom=Modify Guess=Read Opt

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3Â¥: Originally posted by cj4566 at 2012-04-10 11:39:41:
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4Â¥: Originally posted by Illusionist at 2012-04-10 13:41:31:
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5Â¥: Originally posted by cj4566 at 2012-04-11 14:49:12:
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Illusionist

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7Â¥: Originally posted by cj4566 at 2012-04-22 15:00:20:
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cj4566

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8Â¥: Originally posted by Illusionist at 2012-04-23 07:28:12:
ÎÒÓõĵÄÈ·ÊÇGeom=Check¡£µÚ¶þ²½¼ÆËã´¹Ö±¼¤·¢µÄÄ¿µÄÊÇÕÒ³ö¸ÐÐËȤµÄ״̬£¬Àý×ÓÖиÐÐËȤµÄÊÇroot=1£¬ËùÒÔÔÚµÚÈýTD(NStates=6,Root=1)¡£ÊÇÕâÑùµÄ¡£
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cj4566

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Thank you for your inquiry. "Step 4" should read the checkpoint file from "Step 2", since both of them use the linear-response approach to compute the excited state wave functions ("Step 3" follows the "StateSpecific" approach, so it is a little different). Nevertheless, the TD calculation in "Step 2" removed the force constants from the checkpoint file that came from "Step 1". In general, there would not be much harm in just removing the "RCFC" option from "Step 4" since it is a geometry optimization on the excited state but the force constants were from the ground state, and the curvature of the potential energy surfaces for the two states can be different in that region.


If the force constants from the ground state are useful for your calculation on the excited state, then use a copy of "01-ac.chk" for your "Step 4" calculation instead of a copy of "02-ac.chk", in which case, you would then have to remove the "Read" option from the "TD" keyword since "01-ac.chk" does not contain transition densities.
10Â¥2012-04-24 06:28:53
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