[AMBER] Question about LJ_1264 for Eu3+?

From: Chris <egeh00.aol.com>
Date: Tue, 26 Jan 2016 10:15:24 -0500

Dear all,


I have used LJ_1264 for Ca2+. I can find some information in %FLAG LENNARD_JONES_CCOEF like below. I think this output is normal.



%FLAG LENNARD_JONES_CCOEF
%COMMENT For 12-6-4 potential used for divalent metal ions
%FORMAT(5E16.8)
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 6.41449446E+01 2.33968837E+01 2.33968837E+01 8.17379501E+01
  3.44000693E+01 6.58981994E+01 2.88380194E+01 -2.79210526E+01 -1.01842105E+01
 -1.01842105E+01 -3.55789474E+01 -1.49736842E+01 -2.86842105E+01 -1.25526316E+01
 -8.51315789E+01 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 8.73000000E+01 -3.80000000E+01 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 -0.00000000E+00 0.00000000E+00 0.00000000E+00



I have problems for my new system. I am building a new system with Eu3+ and Cl-. I have checked frcmod.ions34lsm_1264_tip3p and found EU3.


In parmed.py, I used "add12_6_4 :Eu3+,Cl-" command. But I got a all zero result as below. Does this mean Eu3+ does not support LJ1264? Or did I do something wrong? Or is this a normal output?



%FLAG LENNARD_JONES_CCOEF
%COMMENT For 12-6-4 potential used for divalent metal ions
%FORMAT(5E16.8)
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00
  0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00 0.00000000E+00


Thanks,


Chris.
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Received on Tue Jan 26 2016 - 07:30:03 PST
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