Wall clock time and date at job start Tue Mar 31 2020 11:14:00                  
 AMSOL-version 7.1
 by G. D. Hawkins, D. J. Giesen, G. C. Lynch, C. C. Chambers,
 I. Rossi, J. W. Storer, J. Li, J. D. Thompson, P. Winget,
 B. J. Lynch, D. Rinaldi, D. A. Liotard, C. J. Cramer, and D. G. Truhlar

 Copyright 2004 by Regents of the University of Minnesota.
 All rights reserved.

 Notice: recipients of this code are asked to comply
 with the user agreement in Section 1 of the documentation file.


 *******************************************************************************
 *  1SCF     - SCF CALCULATION WITHOUT GEOMETRY OPTIMIZATION 
 *           - USE EF ROUTINE FOR MINIMUM SEARCH (DEFAULT)
 *  GEO-OK   - OVERRIDE INTERATOMIC DISTANCE CHECK
 *  TLIMIT=  - A TIME OF      15. SECONDS REQUESTED
 *  CHARGE   - CHARGE ON SYSTEM= -1
 *  AM1      - THE AM1 HAMILTONIAN TO BE USED
 *  DEV      - DEVELOPER OPTIONS ARE ALLOWED
 *  SM5.42R  - SM5.42R CALCULATIONS WILL BE PERFORMED
 *           - CHARGE MODEL 2 WILL BE USED (CM2A)
 *           - THE SOLVENT IS USER-SPECIFIED      
 *  DIELEC   - THE SOLVENT DIELECTRIC CONSTANT IS   2.06
 *  IOFR     - THE SOLVENT INDEX OF REFRACTION IS 1.4345
 *  ALPHA    - THE SOLVENT ALPHA IS 0.00
 *  BETA     - THE SOLVENT BETA IS 0.00
 *  GAMMA    - THE SOLVENT MACROSCOPIC SURFACE TENSION IS 
 *                 38.93 CAL MOL^-1 ANGSTROM^-2
 *  FACARB   - THE FRACTION OF AROMATIC CARBONS IS   0.00
 *  FEHALO   - THE FRACTION OF ELECTRONEGATIVE HALOGENS IS   0.00
 *******************************************************************************

   Atom   NO. Chemical  Bond length    Bond angle    Dihedral angle
  number  (k)  symbol   (angstroms)     (degrees)      (degrees)
   (I)                     NA:I         NB:NA:I        NC:NB:NA:I    NA  NB  NC
    1       1  C 
    2       2  N            1.46502 *                                 1
    3       3  C            1.36451 *   124.85266 *                   2   1
    4       4  C            1.34481 *   108.85733 *   179.97438 *     3   2   1
    5       5  C            1.46683 *   106.33381 *     0.02562 *     4   3   2
    6       6  C            1.47266 *   126.94378 *   179.97438 *     5   4   3
    7       7  O            1.21623 *   119.99979 *   179.97438 *     6   5   4
    8       8  N            1.34773 *   119.99984 *   359.97438 *     6   5   4
    9       9  C            1.46501 *   120.00220 *   180.02562 *     8   6   5
   10      10  H            1.08998 *   109.02682 *    36.03742 *     9   8   6
   11      11  C            1.52523 *   109.04003 *   277.15778 *     9   8   6
   12      12  C            1.51816 *   111.88683 *   185.82662 *    11   9   8
   13      13  C            1.51612 *   108.05219 *    56.86451 *    12  11   9
   14      14  H            1.08999 *   110.50830 *    55.97093 *    13  12  11
   15      15  C            1.53062 *   117.49572 *   184.08565 *    13  12  11
   16      16  N            1.48655 *   103.44625 *   156.24861 *    15  13  12
   17      17  C            1.36936 *   125.78669 *   155.64596 *    16  15  13
   18      18  H            1.08009 *   119.99792 *   341.89898 *    17  16  15
   19      19  C            1.38807 *   120.00676 *   161.90155 *    17  16  15
   20      20  N            1.31618 *   120.00468 *   156.95195 *    19  17  16
   21      21  Si           1.86810 *   119.99619 *   336.95617 *    19  17  16
   22      22  H            1.48495 *   109.47011 *    85.40617 *    21  19  17
   23      23  H            1.48500 *   109.46869 *   205.40535 *    21  19  17
   24      24  H            1.48497 *   109.46950 *   325.40272 *    21  19  17
   25      25  C            1.48245 *   108.43445 *   335.61980 *    16  15  13
   26      26  C            1.52328 *   105.86108 *   356.81599 *    25  16  15
   27      27  H            1.09003 *   110.25117 *   272.17075 *    26  25  16
   28      28  C            1.51446 *   117.44892 *   145.31072 *    26  25  16
   29      29  C            1.34652 *   124.85051 *   179.69756 *     2   1   3
   30      30  H            1.08997 *   109.47167 *    90.01976 *     1   2   3
   31      31  H            1.08995 *   109.47118 *   210.02689 *     1   2   3
   32      32  H            1.09005 *   109.46797 *   330.02350 *     1   2   3
   33      33  H            1.08004 *   125.56923 *     0.02562 *     3   2   1
   34      34  H            1.08004 *   126.83150 *   180.02562 *     4   3   2
   35      35  H            0.97004 *   119.99975 *   359.97438 *     8   6   5
   36      36  H            1.09003 *   109.03588 *   305.96279 *    11   9   8
   37      37  H            1.08999 *   109.03838 *    64.81778 *    11   9   8
   38      38  H            1.09001 *   108.79304 *   297.52817 *    12  11   9
   39      39  H            1.08996 *   110.06750 *   176.93441 *    12  11   9
   40      40  H            1.09000 *   110.62297 *   274.74108 *    15  13  12
   41      41  H            1.09005 *   110.62658 *    37.59988 *    15  13  12
   42      42  H            0.97001 *   119.99789 *   180.02562 *    20  19  17
   43      43  H            1.08997 *   110.17322 *   237.71692 *    25  16  15
   44      44  H            1.08998 *   110.17280 *   115.91105 *    25  16  15
   45      45  H            1.09000 *   109.94161 *    61.85411 *    28  26  25
   46      46  H            1.08993 *   109.94036 *   300.61671 *    28  26  25
   47      47  H            1.08001 *   125.80423 *   359.96293 *    29   2   1

 Note: An asterisk (*) indicates this parameter was or will be optimized.

          Cartesian coordinates (angstroms)
    NO.       Atom         X         Y         Z
     1         6        0.0000    0.0000    0.0000
     2         7        1.4650    0.0000    0.0000
     3         6        2.2448    1.1197    0.0000
     4         6        3.5375    0.7492    0.0006
     5         6        3.5462   -0.7176    0.0003
     6         6        4.7284   -1.5958    0.0002
     7         8        4.5885   -2.8039    0.0005
     8         7        5.9653   -1.0606   -0.0002
     9         6        7.1414   -1.9342   -0.0008
    10         1        6.9296   -2.8148   -0.6072
    11         6        7.4343   -2.3754    1.4295
    12         6        8.7249   -3.1693    1.5238
    13         6        9.8449   -2.3133    0.9656
    14         1        9.8939   -1.3590    1.4900
    15         6       11.2357   -2.9449    0.8683
    16         7       11.9027   -2.1499   -0.1961
    17         6       13.2541   -1.9874   -0.3463
    18         1       13.9183   -2.1980    0.4790
    19         6       13.7704   -1.5521   -1.5590
    20         7       14.9495   -0.9686   -1.6009
    21        14       12.7916   -1.7942   -3.1316
    22         1       11.8423   -0.6652   -3.3026
    23         1       13.7197   -1.8404   -4.2900
    24         1       12.0351   -3.0695   -3.0523
    25         6       10.8570   -1.5632   -1.0679
    26         6        9.5301   -2.0962   -0.5429
    27         1        9.2940   -3.0504   -1.0138
    28         6        8.3300   -1.1753   -0.6157
    29         6        2.2345   -1.1050    0.0058
    30         1       -0.3633   -0.0004   -1.0276
    31         1       -0.3633   -0.8897    0.5142
    32         1       -0.3633    0.8902    0.5135
    33         1        1.8829    2.1373    0.0004
    34         1        4.3981    1.4018    0.0011
    35         1        6.0769   -0.0970   -0.0007
    36         1        7.5223   -1.4927    2.0629
    37         1        6.6076   -2.9882    1.7889
    38         1        8.6217   -4.0788    0.9320
    39         1        8.9332   -3.4225    2.5633
    40         1       11.7695   -2.8455    1.8134
    41         1       11.1620   -3.9932    0.5787
    42         1       15.3100   -0.6641   -2.4484
    43         1       11.0072   -1.8795   -2.1001
    44         1       10.8782   -0.4755   -1.0005
    45         1        8.1147   -0.9267   -1.6549
    46         1        8.5244   -0.2658   -0.0475
    47         1        1.8767   -2.1240    0.0118

          RHF calculation, no. of doubly occupied orbitals= 60


 REFERENCES FOR PARAMETERS IN GAS-PHASE HAMILTONIAN:

  H: (AM1): M.J.S. DEWAR ET AL, J. AM. CHEM. SOC. 107 3902-3909 (1985)          
  C: (AM1): M.J.S. DEWAR ET AL, J. AM. CHEM. SOC. 107 3902-3909 (1985)          
  N: (AM1): M.J.S. DEWAR ET AL, J. AM. CHEM. SOC. 107 3902-3909 (1985)          
  O: (AM1): M.J.S. DEWAR ET AL, J. AM. CHEM. SOC. 107 3902-3909 (1985)          
 Si: (AM1): M.J.S.DEWAR, C. JIE, ORGANOMETALLICS, 6, 1486-1490 (1987).          

 REFERENCE FOR CHARGE MODEL 2:

 J. Li, J. Xing, C. J. Cramer, and D. G. Truhlar, J. Chem. Phys. 111 (1999) 885.

 REFERENCE FOR THE PARAMETERIZATION OF THE SM5.42R SOLVATION MODEL:

 J. Li, T. Zhu, G. D. Hawkins, P. Winget, D. A. Liotard, C. J. Cramer, and 
   D. G. Truhlar, Theor. Chem. Acc. 103 (1999) 9-63

 P. Winget, J. D. Thompson C. J. Cramer,and D. G. Truhlar, J. Phys. Chem. B. submitted.



CHARGE=-1 AM1 1SCF TLIMIT=15 GEO-OK SM5.42R                                     
& SOLVNT=GENORG IOFR=1.4345 ALPHA=0.00 BETA=0.00 GAMMA=38.93                    
& DIELEC=2.06 FACARB=0.00 FEHALO=0.00 DEV                                       
 ZINC000979657349.mol2 47                                                        
                                                                                 

     1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED
     SCF FIELD WAS ACHIEVED                                   
Wall clock time and date at job start Tue Mar 31 2020 11:14:00                  

 Heat of formation + Delta-G solvation     =      41.936180 kcal
 Electronic energy + Delta-G solvation     =  -26462.247849 eV
 Core-core repulsion                       =   22839.439369 eV
 Total energy + Delta-G solvation          =   -3622.808480 eV
 No. of doubly occupied orbitals           =      60
 Molecular weight
  (most abundant/longest-lived isotopes)   =     317.184     amu
 Computer time                             =       0.85     seconds

               Orbital eigenvalues (eV)

 -41.52366 -40.04863 -38.68021 -35.76734 -33.69287 -33.04350 -31.82979 -31.05632
 -29.56853 -29.03604 -27.26065 -26.51911 -24.88678 -22.94551 -21.82125 -20.98467
 -20.28356 -20.23221 -20.02245 -19.38914 -18.18466 -16.82622 -16.02538 -16.00004
 -15.81557 -15.35743 -14.83797 -14.54278 -14.28184 -14.18687 -13.96797 -13.67567
 -13.43705 -13.41725 -12.94211 -12.76375 -12.62352 -12.48534 -12.33167 -12.29900
 -12.02692 -11.96512 -11.47275 -11.22978 -10.77040 -10.66554 -10.56965 -10.33360
 -10.07319 -10.03227  -9.72223  -9.64474  -9.20027  -9.02173  -8.87207  -8.61648
  -8.54404  -6.99218  -5.88151  -3.15839   1.57015   2.11505   2.43309   3.32866
   3.40254   3.51345   3.53107   3.57132   4.25252   4.55149   4.60798   4.61354
   4.64128   4.72801   4.79528   4.86849   4.91957   4.98236   5.12682   5.15367
   5.27450   5.44314   5.52444   5.55846   5.58743   5.63927   5.67769   5.77093
   5.92059   6.01164   6.09360   6.15461   6.20370   6.25835   6.30481   6.38116
   6.41330   6.49806   6.55361   6.60620   6.70224   6.73742   6.85399   6.91575
   6.97053   7.61572   7.73810   8.34141   8.37417   8.88449   9.75638  10.26123
  11.28681

          Molecular weight =  317.18amu

           Principal moments of inertia in cm(-1)
          A =    0.025524   B =    0.002605   C =    0.002476

           Principal moments of inertia in units of 10**(-40)*gram-cm**2
          A = 1096.743446   B =10747.708490   C =11307.803722

              Net atomic charges, atomic populations, and dipole contributions
                                   calculated with CM2 

         Atom NO.   Type          Charge        No. of electrons
           1         C             0.069           3.931
           2         N            -0.449           5.449
           3         C            -0.019           4.019
           4         C            -0.169           4.169
           5         C            -0.233           4.233
           6         C             0.591           3.409
           7         O            -0.555           6.555
           8         N            -0.721           5.721
           9         C             0.150           3.850
          10         H             0.084           0.916
          11         C            -0.124           4.124
          12         C            -0.100           4.100
          13         C            -0.105           4.105
          14         H             0.078           0.922
          15         C             0.141           3.859
          16         N            -0.614           5.614
          17         C            -0.237           4.237
          18         H             0.092           0.908
          19         C             0.018           3.982
          20         N            -0.910           5.910
          21         Si            0.890           3.110
          22         H            -0.287           1.287
          23         H            -0.306           1.306
          24         H            -0.280           1.280
          25         C             0.129           3.871
          26         C            -0.103           4.103
          27         H             0.074           0.926
          28         C            -0.109           4.109
          29         C             0.073           3.927
          30         H             0.075           0.925
          31         H             0.086           0.914
          32         H             0.086           0.914
          33         H             0.166           0.834
          34         H             0.146           0.854
          35         H             0.399           0.601
          36         H             0.060           0.940
          37         H             0.065           0.935
          38         H             0.063           0.937
          39         H             0.066           0.934
          40         H             0.049           0.951
          41         H             0.026           0.974
          42         H             0.262           0.738
          43         H             0.029           0.971
          44         H             0.039           0.961
          45         H             0.068           0.932
          46         H             0.072           0.928
          47         H             0.174           0.826

For the charges calculated by CM2:

 Dipole moment (debyes)    X         Y         Z       Total
 from point charges   -30.747     4.082     5.016    31.420


Note:  The Mulliken population analysis charges presented below were not
used in the solvation calculation but are provided for completeness.
The chosen solvation model uses CM2 partial charges for calculating
solvation energies.

              Net atomic charges, atomic populations, and dipole contributions
                            using Mulliken population analysis

         Atom NO.   Type          Charge        No. of electrons
           1         C            -0.073           4.073
           2         N            -0.125           5.125
           3         C            -0.145           4.145
           4         C            -0.193           4.193
           5         C            -0.243           4.243
           6         C             0.379           3.621
           7         O            -0.435           6.435
           8         N            -0.371           5.371
           9         C             0.046           3.954
          10         H             0.102           0.898
          11         C            -0.162           4.162
          12         C            -0.139           4.139
          13         C            -0.124           4.124
          14         H             0.096           0.904
          15         C             0.016           3.984
          16         N            -0.341           5.341
          17         C            -0.364           4.364
          18         H             0.110           0.890
          19         C            -0.180           4.180
          20         N            -0.555           5.555
          21         Si            0.722           3.278
          22         H            -0.215           1.215
          23         H            -0.234           1.234
          24         H            -0.207           1.207
          25         C             0.005           3.995
          26         C            -0.123           4.123
          27         H             0.092           0.908
          28         C            -0.147           4.147
          29         C            -0.063           4.063
          30         H             0.094           0.906
          31         H             0.104           0.896
          32         H             0.104           0.896
          33         H             0.184           0.816
          34         H             0.164           0.836
          35         H             0.233           0.767
          36         H             0.078           0.922
          37         H             0.084           0.916
          38         H             0.082           0.918
          39         H             0.085           0.915
          40         H             0.067           0.933
          41         H             0.044           0.956
          42         H             0.072           0.928
          43         H             0.046           0.954
          44         H             0.057           0.943
          45         H             0.087           0.913
          46         H             0.091           0.909
          47         H             0.191           0.809

 Dipole moment (debyes)     X         Y         Z       Total
 from point charges    -30.968     3.335     4.909    31.532
 hybrid contribution    -0.464     0.460    -1.095     1.275
 sum                   -31.432     3.795     3.814    31.889

          Atomic orbital electron populations

   1.22126   0.76869   1.04692   1.03607   1.43631   1.06801   1.05960   1.56079
   1.21753   0.90600   0.91284   1.10871   1.22069   0.96255   0.93251   1.07687
   1.20403   0.92636   0.93367   1.17898   1.17373   0.82412   0.87000   0.75268
   1.90764   1.86623   1.14730   1.51369   1.45919   1.05322   1.10327   1.75524
   1.21054   0.83737   0.93646   0.96945   0.89760   1.21528   0.98035   1.00421
   0.96240   1.20900   0.93363   0.98413   1.01178   1.22106   0.94964   0.99924
   0.95396   0.90376   1.21346   0.90519   0.93749   0.92754   1.45405   1.01751
   1.55844   1.31137   1.18679   0.79632   1.40591   0.97493   0.89020   1.24951
   0.95889   0.99723   0.97432   1.69852   1.19338   1.40439   1.25834   0.86851
   0.78140   0.78540   0.84220   1.21474   1.23449   1.20693   1.21306   0.87127
   0.96967   0.94078   1.21733   0.94001   0.99259   0.97270   0.90797   1.21552
   0.93540   0.98648   1.00985   1.21795   0.89859   0.91749   1.02861   0.90603
   0.89561   0.89576   0.81627   0.83620   0.76697   0.92151   0.91610   0.91786
   0.91540   0.93281   0.95568   0.92828   0.95404   0.94296   0.91315   0.90949
   0.80867

   Number of geometries                                      1
   Number of calculations of the screened coulomb radii      1
   The total number of SCF iterations                       17.
    Note: The number of geometries may not
    correspond to the number of cycles due to rejected geometry changes.

 In the following table subtotal= G_P + SS G_CDS.

  Atom   Chem.  CM2      G_P      Area      Sigma k    SS G_CDS Subtotal   M
 number symbol   chg.    (kcal) (Ang**2)  cal/(Ang**2)  (kcal)   (kcal)  value

   1       C     0.07     0.19    11.04      59.85       0.66     0.85     16
   2       N    -0.45    -3.09     3.09    -124.53      -0.38    -3.47     16
   3       C    -0.02    -0.13    11.34     -16.82      -0.19    -0.32     16
   4       C    -0.17    -1.46    10.56     -37.50      -0.40    -1.85     16
   5       C    -0.23    -2.58     6.29    -103.35      -0.65    -3.23     16
   6       C     0.59     7.95     7.73     -12.59      -0.10     7.86     16
   7       O    -0.56    -9.35    16.51       5.26       0.09    -9.26     16
   8       N    -0.72    -8.48     5.05     -54.74      -0.28    -8.75     16
   9       C     0.15     1.97     2.42     -67.74      -0.16     1.81     16
  10       H     0.08     1.26     7.58     -51.93      -0.39     0.87     16
  11       C    -0.12    -1.59     5.29     -27.58      -0.15    -1.73     16
  12       C    -0.10    -1.35     5.61     -28.03      -0.16    -1.51     16
  13       C    -0.10    -1.70     2.48     -89.90      -0.22    -1.93     16
  14       H     0.08     1.28     8.03     -51.93      -0.42     0.86     16
  15       C     0.14     2.84     6.93      -2.82      -0.02     2.82     16
  16       N    -0.61   -15.27     3.26    -170.42      -0.56   -15.82     16
  17       C    -0.24    -6.89    10.59     -15.06      -0.16    -7.05     16
  18       H     0.09     2.80     8.06     -52.48      -0.42     2.38     16
  19       C     0.02     0.54     5.44     -17.43      -0.09     0.45     16
  20       N    -0.91   -28.66    13.97      55.49       0.78   -27.89     16
  21       Si    0.89    23.53    24.37    -169.99      -4.14    19.39     16
  22       H    -0.29    -7.31     6.86      56.52       0.39    -6.92     16
  23       H    -0.31    -8.16     7.11      56.52       0.40    -7.76     16
  24       H    -0.28    -7.35     6.87      56.52       0.39    -6.96     16
  25       C     0.13     2.88     5.07      -3.42      -0.02     2.87     16
  26       C    -0.10    -1.77     2.31     -90.35      -0.21    -1.98     16
  27       H     0.07     1.28     7.94     -51.93      -0.41     0.87     16
  28       C    -0.11    -1.50     5.15     -27.08      -0.14    -1.64     16
  29       C     0.07     0.68    11.12     -16.84      -0.19     0.49     16
  30       H     0.08     0.15     8.14     -51.93      -0.42    -0.27     16
  31       H     0.09     0.15     8.13     -51.93      -0.42    -0.27     16
  32       H     0.09     0.10     8.13     -51.93      -0.42    -0.32     16
  33       H     0.17     0.66     8.06     -52.48      -0.42     0.24     16
  34       H     0.15     0.99     7.70     -52.48      -0.40     0.59     16
  35       H     0.40     3.76     7.71     -40.82      -0.31     3.44     16
  36       H     0.06     0.73     8.14     -51.93      -0.42     0.31     16
  37       H     0.07     0.90     8.07     -51.93      -0.42     0.48     16
  38       H     0.06     0.88     7.99     -51.93      -0.41     0.47     16
  39       H     0.07     0.82     8.14     -51.93      -0.42     0.40     16
  40       H     0.05     0.97     8.14     -51.93      -0.42     0.54     16
  41       H     0.03     0.53     8.14     -51.93      -0.42     0.10     16
  42       H     0.26     7.83     8.31     -40.82      -0.34     7.49     16
  43       H     0.03     0.68     3.22     -51.93      -0.17     0.52     16
  44       H     0.04     0.89     8.08     -51.93      -0.42     0.47     16
  45       H     0.07     0.92     8.14     -51.93      -0.42     0.50     16
  46       H     0.07     0.93     8.04     -51.93      -0.42     0.52     16
  47       H     0.17     1.41     8.06     -52.49      -0.42     0.99     16

 LS Contribution                 368.43      15.07       5.55     5.55

 Total:         -1.00   -36.10   368.43                 -8.73   -44.83

 By element:

 Atomic #  1  Polarization:    7.11  SS G_CDS:  -7.59  Total:    -0.48 kcal
 Atomic #  6  Polarization:   -1.91  SS G_CDS:  -2.19  Total:    -4.10 kcal
 Atomic #  7  Polarization:  -55.49  SS G_CDS:  -0.44  Total:   -55.93 kcal
 Atomic #  8  Polarization:   -9.35  SS G_CDS:   0.09  Total:    -9.26 kcal
 Atomic # 14  Polarization:   23.53  SS G_CDS:  -4.14  Total:    19.39 kcal
 Total LS contribution                           5.55  Total:     5.55 kcal

 Total:                      -36.10             -8.73           -44.83 kcal

   The number of atoms in the molecule is     47
   The average number of expansion shells was   16.00
   The maximum number of expansion shells was     16
   The minimum number of expansion shells was     16


 **** NOTA BENE ****
 This is the net solvation energy for this exact molecular structure 
 (nuclear and electronic)!  The standard-state solvation energy should be 
 obtained as the difference between the heat of formation plus delta-G solvation
 for the relaxed solvated system and that for the relaxed gas-phase system.

                                                                                 
 ZINC000979657349.mol2 47                                                        

 1SCF run

    This is a breakdown of the solvation energy calculated
    without geometric relaxation in solution:

 (1)  E-EN(sol) electronic-nuclear energy of solute                 86.766 kcal
 (2)  G-P(sol) polarization free energy of solvation               -36.101 kcal
 (3)  G-ENP(sol) elect.-nuc.-pol. free energy of system             50.664 kcal
 (4)  G-CDS(sol) cavity-dispersion-solvent structure free energy    -8.728 kcal
 (5)  G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4)             -44.829 kcal
 (6)  G-S(sol) free energy of system = (1) + (5)                    41.936 kcal

     1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED

 Total computer time =       0.85 seconds