Different ECP assignments for the same type of atoms


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12:10:28 PM PST - Thu, Nov 28th 2013
hi, all
The following is my input:

start gly-p-scf-iglo

charge 1
geometry units angstrom
symmetry c1
C1                  0.72627200   -0.73267900   -0.00006800

H                  0.68428200   -1.39362000   -0.87166600

H                  0.68423400   -1.39413200    0.87111400

C4                 -0.54191800    0.11198600   -0.00000500

O                 -0.57888000    1.31544300   -0.00003800

O                 -1.65356400   -0.66092600    0.00008100

H                 -2.41348300   -0.05967000   -0.00012900

N                  1.97103100    0.01188900    0.00010100

H                  2.00074000    0.62601100   -0.80810400

H                  2.00043000    0.62620600    0.80817200
end

basis
 * library 6-311G** except C1 C4

 C1 library IGLO-III

 C4 library "CRENBL ECP"
end

ecp
 C4 library "CRENBL ECP"
end

dft
  mult 2

  iterations 200
  1. convergence lshift 2.5
  cgmin

  xc b3lyp
  1. odft
  print "final vectors analysis"
end

task dft


I want to apply ECP only on one of the two carbon atoms (C4). Well, this doesn't work. NWChem omitted the 1s electrons of all carbon atoms during the calculation. Is there something wrong in my input for this purpose?
Thank you very much for any help!