Multiple Molecule-Systems with Mopac?



 Dear Subscribers,
 we are using MOPAC 5.0 (purchased with SYBYL 6.0). Recent we would compute
 a multi-molecule-system (see the *.dat-file below, generated with SYBYL).
 After some computation-time MOPAC stopped (during the computation for the
 first reaction coordinate) and print in his output-file (see below):
            THREE ATOMS BEING USED TO DEFINE THE
            COORDINATES OF A FOURTH ATOM, WHOSE BOND-ANGLE IS
            NOT ZERO OR 180 DEGREEES, ARE IN AN ALMOST STRAIGHT
            LINE.  THERE IS A HIGH PROBABILITY THAT THE
            COORDINATES OF THE ATOM WILL BE INCORRECT.
 and at the end:
        ATOMS 65, 63, AND 54 ARE WITHIN 0.0059 ANGSTROMS OF A STRAIGHT LINE
 The bond-angle between theese 3 atoms, which are not connected, is 0 degrees.
 A second attempt, using cartesian coordinates, showed the same results.
 Can anybody give us hints for the handling of such multi-molecule-systems
 with MOAPC?
 Thank You for Your help. With best regards,
 H. Schinke
 ############## Input (DAT)-File for the run ##############################
 PM3 T=360000 NOINTER CHARGE-1
 aceto_rxn.dat
 isopropylchlorid + NH2 in acetonitril
 0006 0.0000    0    0.0000    0    0.0000    0    0000 0000 0000
 0006 1.5500    1    0.0000    0    0.0000    0    0001 0000 0000
 0006 1.5514    1    111.1064  1    0.0000    0    0002 0001 0000
 0017 1.7710    1    109.5989  1    -121.0562 1    0002 0001 0003
 0007 3.5578    -1   80.7763   1    93.7999   1    0002 0001 0003
 0001 1.1011    1    110.5590  1    -60.5032  1    0001 0002 0003
 0001 1.0989    1    109.9108  1    -179.0905 1    0001 0002 0003
 0001 1.1028    1    110.4057  1    60.9707   1    0001 0002 0003
 0001 1.1043    1    109.7158  1    120.9287  1    0002 0001 0003
 0001 1.1033    1    109.8467  1    179.2252  1    0003 0002 0001
 0001 1.1019    1    110.1398  1    58.7459   1    0003 0002 0001
 0001 1.1015    1    110.2444  1    -60.5427  1    0003 0002 0001
 0001 1.0822    1    74.1199   1    -87.4158  1    0005 0002 0001
 0001 1.0820    1    126.5937  1    15.1313   1    0005 0002 0001
 0006 4.7255    1    94.3647   1    128.2758  1    0005 0002 0001
 0007 1.1581    1    150.8418  1    -91.2513  1    0015 0005 0002
 0006 1.4591    1    29.0551   1    88.8644   1    0015 0005 0002
 0001 1.1001    1    109.3496  1    85.7222   1    0017 0015 0005
 0001 1.1004    1    109.2794  1    -34.0471  1    0017 0015 0005
 0001 1.1008    1    109.6514  1    -154.1209 1    0017 0015 0005
 0006 3.5996    1    153.6728  1    -96.5280  1    0014 0005 0002
 0007 1.1578    1    13.9165   1    146.8929  1    0021 0014 0005
 0006 1.4574    1    166.0703  1    -32.8884  1    0021 0014 0005
 0001 1.0985    1    109.5225  1    -46.5050  1    0023 0021 0014
 0001 1.0990    1    109.5135  1    -166.5502 1    0023 0021 0014
 0001 1.0988    1    109.5336  1    73.3020   1    0023 0021 0014
 0006 3.1821    1    135.8468  1    -33.5144  1    0026 0023 0021
 0007 1.1575    1    58.8166   1    -86.8753  1    0027 0026 0023
 0006 1.4569    1    121.2665  1    93.3518   1    0027 0026 0023
 0001 1.0995    1    109.1838  1    157.7614  1    0029 0027 0026
 0001 1.0990    1    109.1728  1    38.1084   1    0029 0027 0026
 0001 1.1001    1    109.6732  1    -81.9072  1    0029 0027 0026
 0006 3.0767    1    103.4743  1    -51.4763  1    0025 0023 0021
 0007 1.1575    1    76.3789   1    166.4251  1    0033 0025 0023
 0006 1.4574    1    103.6952  1    -13.7778  1    0033 0025 0023
 0001 1.0987    1    109.0487  1    -147.5827 1    0035 0033 0025
 0001 1.1000    1    109.7437  1    92.3169   1    0035 0033 0025
 0001 1.0985    1    109.6728  1    -27.9951  1    0035 0033 0025
 0006 3.4510    1    108.8603  1    -165.3810 1    0031 0029 0027
 0007 1.1576    1    46.9670   1    131.3490  1    0039 0031 0029
 0006 1.4572    1    132.9267  1    -48.6902  1    0039 0031 0029
 0001 1.0997    1    109.3387  1    93.5222   1    0041 0039 0031
 0001 1.0980    1    109.2758  1    -26.5337  1    0041 0039 0031
 0001 1.0987    1    109.8151  1    -146.1868 1    0041 0039 0031
 0006 2.9482    1    112.4182  1    -121.6753 1    0011 0003 0002
 0007 1.1579    1    90.4906   1    91.2241   1    0045 0011 0003
 0006 1.4577    1    89.4953   1    -88.6234  1    0045 0011 0003
 0001 1.0995    1    109.7035  1    149.5640  1    0047 0045 0011
 0001 1.0982    1    109.2759  1    29.6008   1    0047 0045 0011
 0001 1.0990    1    109.6324  1    -90.1483  1    0047 0045 0011
 0006 4.5317    1    139.9017  1    -69.9744  1    0012 0003 0002
 0007 1.1573    1    145.3014  1    -130.1153 1    0051 0012 0003
 0006 1.4565    1    34.8458   1    49.8356   1    0051 0012 0003
 0001 1.0993    1    108.9200  1    -157.5288 1    0053 0051 0012
 0001 1.0994    1    110.0562  1    82.4921   1    0053 0051 0012
 0001 1.0994    1    109.1379  1    -37.6058  1    0053 0051 0012
 0006 3.4721    1    116.7486  1    -176.4873 1    0004 0002 0001
 0007 1.1572    1    101.7777  1    86.5285   1    0057 0004 0002
 0006 1.4560    1    78.1876   1    -93.6430  1    0057 0004 0002
 0001 1.0984    1    109.8789  1    69.2024   1    0059 0057 0004
 0001 1.0962    1    108.6552  1    -50.4940  1    0059 0057 0004
 0001 1.0984    1    109.8177  1    -170.0241 1    0059 0057 0004
 0006 4.4310    1    131.3391  1    -95.8235  1    0054 0053 0051
 0007 1.1574    1    168.8801  1    -42.8294  1    0063 0054 0053
 0006 1.4566    1    11.3006   1    137.2662  1    0063 0054 0053
 0001 1.0997    1    109.2702  1    48.5555   1    0065 0063 0054
 0001 1.0992    1    109.5672  1    -71.5576  1    0065 0063 0054
 0001 1.0995    1    109.3136  1    168.5094  1    0065 0063 0054
 0006 2.8666    1    111.9127  1    114.2402  1    0011 0003 0002
 0007 1.1577    1    78.8063   1    126.9038  1    0069 0011 0003
 0006 1.4573    1    101.1095  1    -52.9852  1    0069 0011 0003
 0001 1.0988    1    109.4665  1    88.1980   1    0071 0069 0011
 0001 1.0994    1    109.6016  1    -31.7086  1    0071 0069 0011
 0001 1.0989    1    109.3863  1    -151.8561 1    0071 0069 0011
 0006 3.1681    1    116.9983  1    65.3880   1    0014 0005 0002
 0007 1.1577    1    68.7614   1    18.5956   1    0075 0014 0005
 0006 1.4574    1    111.3471  1    -161.5537 1    0075 0014 0005
 0001 1.0990    1    110.0250  1    -38.6061  1    0077 0075 0014
 0001 1.0988    1    108.9522  1    -158.6613 1    0077 0075 0014
 0001 1.0981    1    109.5142  1    81.4778   1    0077 0075 0014
 0006 3.0430    1    101.6525  1    178.7693  1    0042 0041 0039
 0007 1.1573    1    86.4724   1    -12.0939  1    0081 0042 0041
 0006 1.4566    1    93.4012   1    167.6526  1    0081 0042 0041
 0001 1.0988    1    110.0533  1    132.2910  1    0083 0081 0042
 0001 1.0996    1    109.5192  1    11.8415   1    0083 0081 0042
 0001 1.0989    1    108.6354  1    -107.8211 1    0083 0081 0042
 0006 2.8961    1    117.9918  1    39.7798   1    0055 0053 0051
 0007 1.1572    1    94.4558   1    -21.5512  1    0087 0055 0053
 0006 1.4568    1    85.5489   1    158.3391  1    0087 0055 0053
 0001 1.0993    1    109.4929  1    75.9636   1    0089 0087 0055
 0001 1.0997    1    109.8437  1    -44.3760  1    0089 0087 0055
 0001 1.0980    1    108.9221  1    -164.2069 1    0089 0087 0055
 4.0 3.8 3.6 3.4 3.2 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6
 1.5
 ####### end dat-file ########### start out-file ######################
 ---------------- stuff deleted ---------------------------------
  RESTART FILE WRITTEN,   TIME LEFT: 336271.4 GRAD.:    70.180 HEAT: 250.6730
  CYCLE:  17 TIME:1985.31 TIME LEFT: 334286.1 GRAD.:    86.913 HEAT: 248.3024
  CYCLE:  18 TIME: 318.24 TIME LEFT: 333967.8 GRAD.:    88.962 HEAT: 248.1202
  RESTART FILE WRITTEN,   TIME LEFT: 330634.8 GRAD.:   112.826 HEAT: 244.9363
                      CALCULATION ABANDONED AT THIS POINT
            THREE ATOMS BEING USED TO DEFINE THE
            COORDINATES OF A FOURTH ATOM, WHOSE BOND-ANGLE IS
            NOT ZERO OR 180 DEGREEES, ARE IN AN ALMOST STRAIGHT
            LINE.  THERE IS A HIGH PROBABILITY THAT THE
            COORDINATES OF THE ATOM WILL BE INCORRECT.
                     THE FAULTY ATOM IS ATOM NUMBER  66
 ---------------- stuff deleted ----------------------------------
      53      C         1.43856 *       27.56940 *    47.24132 *   51   12    3
      54      H         1.10289 *      113.07091 *  -159.36420 *   53   51   12
      55      H         1.10628 *      110.38282 *    82.03550 *   53   51   12
      56      H         1.10154 *      110.86405 *   -39.47341 *   53   51   12
      57      C         4.08353 *       95.06319 *  -183.15715 *    4    2    1
      58      N         1.15994 *      115.38586 *    98.17581 *   57    4    2
      59      C         1.43955 *       64.12061 *   -80.79930 *   57    4    2
      60      H         1.10829 *      109.67685 *    69.63226 *   59   57    4
      61      H         1.10079 *      110.64538 *   -49.08832 *   59   57    4
      62      H         1.09725 *      110.82013 *  -170.03940 *   59   57    4
      63      C         4.37425 *      137.62500 *  -102.46271 *   54   53   51
      64      N         1.16069 *      185.63463 *   -39.66892 *   63   54   53
      65      C         1.44209 *        0.07684 *   131.59166 *   63   54   53
      66      H         1.10339 *      111.26819 *    49.01765 *   65   63   54
 ---------------- stuff deleted ----------------------------------
        ATOMS 65, 63, AND 54 ARE WITHIN 0.0059 ANGSTROMS OF A STRAIGHT LINE
 ################### end out-file #################################
 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 =-=                            Heiko Schinke                            =-=
 =-=    Martin-Luther-University, Dept. of Biochemistry/Biotechnology    =-=
 =-=              P. O. Box 8, D-4020 Halle/Saale, Germany               =-=
 =-=                                                                     =-=
 =-=     Phone: ++49/345/617242                 FAX: ++49/345/647161     =-=
 =-=                                                                     =-=
 =-=            E-Mail: schinke # - at - # biochemtech.uni-halle.dbp.de
 =-=
 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=