[molpro-user] Restarting forward-difference frequencies calculation

Dr Seth OLSEN s.olsen1 at uq.edu.au
Fri Aug 12 08:59:49 BST 2005


Hi Molpro-users,

I have been having problems with restarting forward-difference frequency
calculations for an SA-CASSCF wavefunction.  The error I get seems to be
in restarting the geometry, and occurs whether or not I specify the
geometry in the input.  I get a 'coincident centres' error.  In listing
that follows, it seems that the coordinates for all atoms have been set
to (0,0,0).  This explains the coincident centres, but not why the
coordinates are reset.  Has anyone else run into this problem and/or
does anyone know a fix?  

Cheers,

Seth

 Possible error in geometry specification
 The centres  2 C and  1 O have ended up at the same place
                                                                       
                                                                            
 Z matrix     current Z matrix
 ========
                                                                       
                                                                            
 Records:   701.2   700.0
 Maximum, total, and current numbers of geometry points 100   1   1
                                                                       
                                                                            
   #     Tag     N1 Distance  N2 Angle     N3 Angle        J
   Grp   Chg     Distance     Angle        Angle                  x    
       y            z
                                                                       
                                                                            
   1  1   O       0 O1X        0 O1Y        0 O1Z
      1  8.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
   2  2   C       0 C1X        0 C1Y        0 C1Z
      2  6.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
   3  3   N       0 N1X        0 N1Y        0 N1Z
      3  7.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
   4  4   C       0 C2X        0 C2Y        0 C2Z          0
      2  6.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
   5  5   H       0 H1X        0 H1Y        0 H1Z          0
      4  1.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
   6  6   H       0 H2X        0 H2Y        0 H2Z          0
      4  1.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
   7  7   C       0 C3X        0 C3Y        0 C3Z          0
      2  6.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
   8  8   N       0 N2X        0 N2Y        0 N2Z          0
      3  7.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
   9  9   C       0 C4X        0 C4Y        0 C4Z          0
      2  6.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  10 10   C       0 C5X        0 C5Y        0 C5Z          0
      2  6.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  11 11   N       0 N3X        0 N3Y        0 N3Z          0
      3  7.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  12 12   O       0 O2X        0 O2Y        0 O2Z          0
      1  8.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  13 13   H       0 H3X        0 H3Y        0 H3Z          0
      4  1.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  14 14   C       0 C6X        0 C6Y        0 C6Z          0
      2  6.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  15 15   H       0 H4X        0 H4Y        0 H4Z          0
      4  1.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  16 16   C       0 C7X        0 C7Y        0 C7Z          0
      2  6.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  17 17   C       0 C8X        0 C8Y        0 C8Z          0
      2  6.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  18 18   H       0 H5X        0 H5Y        0 H5Z          0
      4  1.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  19 19   C       0 C9X        0 C9Y        0 C9Z          0
      2  6.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  20 20   H       0 H6X        0 H6Y        0 H6Z          0
      4  1.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  21 21   C       0 C10X       0 C10Y       0 C10Z         0
      2  6.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  22 22   O       0 O3X        0 O3Y        0 O3Z          0
      1  8.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  23 23   C       0 C11X       0 C11Y       0 C11Z         0
      2  6.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  24 24   H       0 H7X        0 H7Y        0 H7Z          0
      4  1.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  25 25   C       0 C12X       0 C12Y       0 C12Z         0
      2  6.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
  26 26   H       0 H8X        0 H8Y        0 H8Z          0
      4  1.0    0.0000000    0.0000000    0.0000000             
0.0000000    0.0000000    0.0000000
                                                                       
                                                                            
 Variables on which Z-matrix depends:
 Name:                O1X             O1Y             O1Z            
C1X             C1Y             C1Z             N1X             N1Y
 Value:         0.0000000       0.0000000       0.0000000      
0.0000000       0.0000000       2.2823558       0.0000000       2.0111502
 Name:                N1Z             C2X             C2Y            
C2Z             H1X             H1Y             H1Z             H2X
 Value:         3.8780068       0.0003419       4.2848491      
2.8378365      -0.0000083      -1.7932230       3.3035564       0.0010490
 Name:                H2Y             H2Z             C3X            
C3Y             C3Z             N2X             N2Y             N2Z
 Value:         4.6027880       0.8325712      -0.0001537      
6.4565815       4.4799150       0.0008417       8.8097127       3.8135790
 Name:                C4X             C4Y             C4Z            
C5X             C5Y             C5Z             N3X             N3Y
 Value:        -0.0002472      10.2446764       6.0938563     
-0.0022272       8.4221536       8.2711418      -0.0018909       6.1405908
 Name:                N3Z             O2X             O2Y            
O2Z             H3X             H3Y             H3Z             C6X
 Value:         7.1015157      -0.0034628       8.7735809     
10.5114174      -0.0021101       4.4676222       7.9546939       0.0012646
 Name:                C6Y             C6Z             H4X            
H4Y             H4Z             C7X             C7Y             C7Z
 Value:        12.8105764       5.9462432       0.0034557     
13.4428509       4.0122730       0.0107019      14.8852224       7.7783459
 Name:                C8X             C8Y             C8Z            
H5X             H5Y             H5Z             C9X             C9Y
 Value:        -0.0097966      14.6385893      10.4549429     
-0.0171042      12.7883258      11.2724850      -0.0111275      16.7267172
 Name:                C9Z             H6X             H6Y            
H6Z            C10X            C10Y            C10Z             O3X
 Value:        12.0085854      -0.0194890      16.5148422     
14.0291068      -0.0034587      19.3038120      11.0358313      -0.0083285
 Name:                O3Y             O3Z            C11X           
C11Y            C11Z             H7X             H7Y             H7Z
 Value:        21.1560185      12.4076252       0.0084187     
19.4956787       8.2891854       0.0145884      21.3634822       7.4903634
 Name:               C12X            C12Y            C12Z            
H8X             H8Y             H8Z
 Value:         0.0101638      17.3792901       6.7771143      
0.0184937      17.6177073       4.7551835
 ? Error
 ? Illegal coincident centres
 ? The problem occurs in zmatrix.f:zmat_weed

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Dr Seth Olsen, PhD
Postdoctoral Fellow, Biomolecular Modeling Group
Centre for Computational Molecular Science
Chemistry Building,
The University of Queensland
Qld 4072, Brisbane, Australia

tel (617) 33653732
fax (617) 33654623
email: s.olsen1 at uq.edu.au
Web: www.ccms.uq.edu.au 

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