Wall clock time and date at job start Fri Apr 10 2020 22:20:54 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 * SM5.42R - SM5.42R CALCULATIONS WILL BE PERFORMED * - CHARGE MODEL 2 WILL BE USED (CM2A) * - THE SOLVENT IS WATER ******************************************************************************* 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 C 1.52998 * 1 3 3 C 1.52998 * 109.47217 * 2 1 4 4 C 1.53000 * 109.47280 * 179.97438 * 3 2 1 5 5 C 1.52998 * 109.47280 * 179.97438 * 4 3 2 6 6 C 1.52998 * 109.47217 * 180.02562 * 5 4 3 7 7 C 1.53002 * 109.47471 * 180.02562 * 6 5 4 8 8 C 1.52998 * 109.47471 * 180.02562 * 7 6 5 9 9 C 1.52995 * 109.47037 * 180.02562 * 8 7 6 10 10 C 1.53005 * 109.47129 * 179.97438 * 9 8 7 11 11 H 1.09005 * 109.47073 * 305.00201 * 10 9 8 12 12 C 1.52994 * 109.47316 * 184.99681 * 10 9 8 13 13 N 1.46897 * 109.46739 * 64.99903 * 10 9 8 14 14 C 1.46905 * 111.00162 * 205.00114 * 13 10 9 15 15 H 1.09005 * 109.34962 * 324.82615 * 14 13 10 16 16 C 1.52959 * 109.41344 * 84.64235 * 14 13 10 17 17 C 1.53659 * 109.32394 * 183.83581 * 16 14 13 18 18 C 1.51267 * 108.31176 * 305.14254 * 17 16 14 19 19 C 1.37884 * 120.85009 * 231.38200 * 18 17 16 20 20 N 1.31514 * 119.99707 * 180.28381 * 19 18 17 21 21 Si 1.86796 * 119.99956 * 0.55604 * 19 18 17 22 22 H 1.48503 * 109.47407 * 269.72718 * 21 19 18 23 23 H 1.48505 * 109.47281 * 29.72474 * 21 19 18 24 24 H 1.48501 * 109.47274 * 149.72572 * 21 19 18 25 25 C 1.51269 * 118.30064 * 51.65902 * 18 17 16 26 26 C 1.52951 * 109.41705 * 205.00323 * 14 13 10 27 27 H 1.08996 * 109.47408 * 179.97438 * 1 2 3 28 28 H 1.09000 * 109.47401 * 299.99872 * 1 2 3 29 29 H 1.09012 * 109.47113 * 59.99779 * 1 2 3 30 30 H 1.09000 * 109.47401 * 240.00128 * 2 1 3 31 31 H 1.09000 * 109.46747 * 120.00043 * 2 1 3 32 32 H 1.09003 * 109.47055 * 60.00256 * 3 2 1 33 33 H 1.09000 * 109.47608 * 300.00422 * 3 2 1 34 34 H 1.09003 * 109.46420 * 60.00415 * 4 3 2 35 35 H 1.08994 * 109.47564 * 300.00533 * 4 3 2 36 36 H 1.09000 * 109.46830 * 60.00326 * 5 4 3 37 37 H 1.09006 * 109.47648 * 300.00503 * 5 4 3 38 38 H 1.09000 * 109.47401 * 60.00128 * 6 5 4 39 39 H 1.09000 * 109.46747 * 300.00043 * 6 5 4 40 40 H 1.09000 * 109.46878 * 59.99594 * 7 6 5 41 41 H 1.09000 * 109.46566 * 300.00320 * 7 6 5 42 42 H 1.08995 * 109.46752 * 59.99675 * 8 7 6 43 43 H 1.09000 * 109.46747 * 299.99829 * 8 7 6 44 44 H 1.09003 * 109.47417 * 60.00145 * 9 8 7 45 45 H 1.09000 * 109.47115 * 299.99485 * 9 8 7 46 46 H 1.09005 * 109.47473 * 300.00274 * 12 10 9 47 47 H 1.09006 * 109.47010 * 60.00014 * 12 10 9 48 48 H 1.09000 * 109.47480 * 179.97438 * 12 10 9 49 49 H 1.00901 * 111.00204 * 328.95350 * 13 10 9 50 50 H 1.08995 * 109.48342 * 303.69103 * 16 14 13 51 51 H 1.09000 * 109.47593 * 63.73323 * 16 14 13 52 52 H 1.09000 * 109.69110 * 185.52159 * 17 16 14 53 53 H 1.08994 * 109.78566 * 64.81858 * 17 16 14 54 54 H 0.97005 * 119.99656 * 179.97438 * 20 19 18 55 55 H 1.08998 * 109.62841 * 68.11279 * 25 18 17 56 56 H 1.08999 * 109.62883 * 188.49874 * 25 18 17 57 57 H 1.08997 * 109.48349 * 56.31265 * 26 14 13 58 58 H 1.09006 * 109.49372 * 296.28123 * 26 14 13 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 6 1.5300 0.0000 0.0000 3 6 2.0400 1.4425 0.0000 4 6 3.5700 1.4425 0.0006 5 6 4.0800 2.8849 0.0000 6 6 5.6100 2.8849 0.0000 7 6 6.1201 4.3274 0.0000 8 6 7.6501 4.3274 -0.0006 9 6 8.1600 5.7699 0.0000 10 6 9.6901 5.7699 0.0000 11 1 10.0534 5.1800 0.8416 12 6 10.2001 7.2068 0.1263 13 7 10.1796 5.1851 -1.2555 14 6 11.5270 4.6250 -1.0852 15 1 12.0902 5.2448 -0.3874 16 6 11.4203 3.2035 -0.5307 17 6 12.8305 2.6550 -0.2631 18 6 13.6342 2.7668 -1.5397 19 6 14.3132 1.6785 -2.0454 20 7 15.0114 1.7961 -3.1536 21 14 14.2352 0.0353 -1.1604 22 1 15.3445 -0.0505 -0.1769 23 1 12.9354 -0.0843 -0.4521 24 1 14.3635 -1.0657 -2.1486 25 6 13.6792 4.1048 -2.2439 26 6 12.2427 4.6022 -2.4368 27 1 -0.3634 -1.0276 -0.0005 28 1 -0.3634 0.5138 0.8900 29 1 -0.3634 0.5139 -0.8901 30 1 1.8934 -0.5138 -0.8900 31 1 1.8932 -0.5138 0.8900 32 1 1.6767 1.9563 0.8900 33 1 1.6766 1.9564 -0.8899 34 1 3.9336 0.9286 -0.8892 35 1 3.9330 0.9287 0.8907 36 1 3.7163 3.3993 0.8896 37 1 3.7170 3.3984 -0.8904 38 1 5.9734 2.3707 -0.8897 39 1 5.9732 2.3715 0.8902 40 1 5.7567 4.8413 0.8900 41 1 5.7567 4.8412 -0.8900 42 1 8.0129 3.8137 -0.8908 43 1 8.0137 3.8135 0.8891 44 1 7.7971 6.2832 0.8905 45 1 7.7964 6.2842 -0.8896 46 1 9.8367 7.7967 -0.7153 47 1 9.8367 7.6408 1.0579 48 1 11.2901 7.2068 0.1267 49 1 9.5393 4.4872 -1.6032 50 1 10.8543 3.2181 0.4006 51 1 10.9118 2.5679 -1.2556 52 1 12.7667 1.6096 0.0391 53 1 13.3098 3.2375 0.5236 54 1 15.4894 1.0305 -3.5092 55 1 14.2357 4.8193 -1.6374 56 1 14.1638 3.9921 -3.2137 57 1 12.2596 5.6081 -2.8562 58 1 11.7147 3.9336 -3.1167 RHF calculation, no. of doubly occupied orbitals= 62 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) 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=WATER ZINC001258232052.mol2 58 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Fri Apr 10 2020 22:20:54 Heat of formation + Delta-G solvation = -89.829772 kcal Electronic energy + Delta-G solvation = -25902.317879 eV Core-core repulsion = 22586.772220 eV Total energy + Delta-G solvation = -3315.545659 eV No. of doubly occupied orbitals = 62 Molecular weight (most abundant/longest-lived isotopes) = 309.273 amu Computer time = 1.50 seconds Orbital eigenvalues (eV) -39.77048 -38.04482 -37.22628 -35.70550 -34.28973 -32.96466 -31.52057 -31.18469 -29.81158 -27.93634 -26.87506 -24.27688 -23.57505 -23.05137 -22.18379 -21.86417 -21.54288 -21.11578 -20.86759 -18.10319 -17.15871 -16.73614 -16.48304 -16.21283 -15.99182 -15.21437 -15.02589 -14.88826 -14.80931 -14.59669 -14.43247 -14.16586 -14.02712 -13.80307 -13.76597 -13.34633 -13.17605 -13.11164 -12.81657 -12.76287 -12.73569 -12.65709 -12.39888 -12.29855 -12.05342 -11.96306 -11.92598 -11.80675 -11.73657 -11.60035 -11.58675 -11.49882 -11.36246 -11.31541 -11.26828 -10.87553 -10.72319 -10.57964 -10.53797 -9.11887 -8.16053 -6.10122 1.36759 1.38647 1.47252 2.39817 3.07720 3.38557 3.63827 3.95188 3.98189 4.04134 4.09956 4.13867 4.19545 4.28211 4.29750 4.38536 4.40353 4.50359 4.57075 4.61248 4.65675 4.74412 4.75013 4.82007 4.84372 4.88767 4.92063 4.93944 4.98645 5.02490 5.04096 5.06276 5.08112 5.10917 5.11767 5.17304 5.21112 5.22818 5.24187 5.26053 5.31148 5.35810 5.40130 5.41077 5.47422 5.48805 5.53061 5.56356 5.57640 5.58499 5.64112 5.79183 5.86171 6.33964 6.37566 6.67755 6.96638 7.47105 8.94923 Molecular weight = 309.27amu Principal moments of inertia in cm(-1) A = 0.011290 B = 0.002411 C = 0.002061 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2479.402228 B =11609.012489 C =13580.404930 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.153 4.153 2 C -0.128 4.128 3 C -0.117 4.117 4 C -0.121 4.121 5 C -0.114 4.114 6 C -0.121 4.121 7 C -0.110 4.110 8 C -0.122 4.122 9 C -0.109 4.109 10 C 0.079 3.921 11 H 0.033 0.967 12 C -0.135 4.135 13 N -0.685 5.685 14 C 0.113 3.887 15 H 0.057 0.943 16 C -0.122 4.122 17 C -0.021 4.021 18 C -0.495 4.495 19 C 0.016 3.984 20 N -0.933 5.933 21 Si 0.941 3.059 22 H -0.275 1.275 23 H -0.249 1.249 24 H -0.293 1.293 25 C 0.005 3.995 26 C -0.082 4.082 27 H 0.056 0.944 28 H 0.056 0.944 29 H 0.054 0.946 30 H 0.057 0.943 31 H 0.059 0.941 32 H 0.063 0.937 33 H 0.061 0.939 34 H 0.055 0.945 35 H 0.058 0.942 36 H 0.064 0.936 37 H 0.061 0.939 38 H 0.053 0.947 39 H 0.056 0.944 40 H 0.068 0.932 41 H 0.063 0.937 42 H 0.051 0.949 43 H 0.054 0.946 44 H 0.080 0.920 45 H 0.070 0.930 46 H 0.058 0.942 47 H 0.070 0.930 48 H 0.036 0.964 49 H 0.339 0.661 50 H 0.051 0.949 51 H 0.044 0.956 52 H 0.033 0.967 53 H 0.018 0.982 54 H 0.262 0.738 55 H -0.005 1.005 56 H 0.022 0.978 57 H 0.043 0.957 58 H 0.033 0.967 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -26.399 3.058 9.071 28.081 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 -0.210 4.210 2 C -0.166 4.166 3 C -0.155 4.155 4 C -0.159 4.159 5 C -0.152 4.152 6 C -0.158 4.158 7 C -0.147 4.147 8 C -0.160 4.160 9 C -0.147 4.147 10 C -0.031 4.031 11 H 0.051 0.949 12 C -0.193 4.193 13 N -0.317 5.317 14 C 0.004 3.996 15 H 0.075 0.925 16 C -0.162 4.162 17 C -0.059 4.059 18 C -0.514 4.514 19 C -0.181 4.181 20 N -0.574 5.574 21 Si 0.768 3.232 22 H -0.201 1.201 23 H -0.174 1.174 24 H -0.219 1.219 25 C -0.033 4.033 26 C -0.120 4.120 27 H 0.075 0.925 28 H 0.075 0.925 29 H 0.073 0.927 30 H 0.076 0.924 31 H 0.078 0.922 32 H 0.081 0.919 33 H 0.080 0.920 34 H 0.074 0.926 35 H 0.077 0.923 36 H 0.083 0.917 37 H 0.080 0.920 38 H 0.071 0.929 39 H 0.075 0.925 40 H 0.086 0.914 41 H 0.082 0.918 42 H 0.070 0.930 43 H 0.072 0.928 44 H 0.099 0.901 45 H 0.088 0.912 46 H 0.077 0.923 47 H 0.089 0.911 48 H 0.055 0.945 49 H 0.159 0.841 50 H 0.069 0.931 51 H 0.062 0.938 52 H 0.051 0.949 53 H 0.036 0.964 54 H 0.071 0.929 55 H 0.014 0.986 56 H 0.041 0.959 57 H 0.062 0.938 58 H 0.052 0.948 Dipole moment (debyes) X Y Z Total from point charges -26.090 3.583 8.700 27.735 hybrid contribution 0.628 -1.852 0.398 1.996 sum -25.462 1.731 9.098 27.094 Atomic orbital electron populations 1.21782 0.95450 1.01856 1.01947 1.21562 0.96285 0.96921 1.01827 1.21603 0.95015 0.96790 1.02078 1.21613 0.95678 0.96889 1.01691 1.21559 0.94788 0.96702 1.02143 1.21603 0.95808 0.96894 1.01541 1.21511 0.94182 0.96688 1.02329 1.21631 0.96359 0.96718 1.01287 1.21691 0.92914 0.97007 1.03088 1.21600 0.95292 0.95788 0.90415 0.94929 1.21768 1.00160 0.95574 1.01827 1.60782 1.03236 1.38403 1.29253 1.21184 0.89368 0.92894 0.96193 0.92450 1.22148 0.97801 0.97360 0.98877 1.19872 0.93633 0.96952 0.95444 1.20666 1.27561 0.95682 1.07505 1.25668 0.94992 1.01908 0.95555 1.69992 1.33337 1.31812 1.22221 0.85799 0.79334 0.79726 0.78384 1.20084 1.17391 1.21915 1.19358 0.93087 0.94189 0.96618 1.21371 0.96534 0.98052 0.96086 0.92516 0.92534 0.92663 0.92388 0.92215 0.91850 0.92043 0.92623 0.92348 0.91682 0.91979 0.92864 0.92533 0.91371 0.91803 0.92997 0.92757 0.90143 0.91158 0.92276 0.91095 0.94477 0.84124 0.93070 0.93769 0.94871 0.96354 0.92932 0.98618 0.95891 0.93803 0.94790 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 15. 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 -0.15 -1.59 9.91 71.98 0.71 -0.88 16 2 C -0.13 -1.54 5.93 30.59 0.18 -1.35 16 3 C -0.12 -1.43 5.21 30.59 0.16 -1.27 16 4 C -0.12 -1.68 5.21 30.59 0.16 -1.52 16 5 C -0.11 -1.59 5.21 30.59 0.16 -1.43 16 6 C -0.12 -1.97 5.21 30.59 0.16 -1.81 16 7 C -0.11 -1.76 5.21 30.59 0.16 -1.60 16 8 C -0.12 -2.39 5.04 30.59 0.15 -2.23 16 9 C -0.11 -2.14 4.81 30.59 0.15 -1.99 16 10 C 0.08 1.99 2.45 44.92 0.11 2.10 16 11 H 0.03 0.90 7.07 -2.38 -0.02 0.88 16 12 C -0.14 -3.25 9.40 71.98 0.68 -2.57 16 13 N -0.68 -21.07 6.05 -469.60 -2.84 -23.92 16 14 C 0.11 4.28 2.18 44.88 0.10 4.38 16 15 H 0.06 2.26 7.10 -2.38 -0.02 2.25 16 16 C -0.12 -4.79 5.19 30.80 0.16 -4.63 16 17 C -0.02 -0.96 5.62 30.25 0.17 -0.79 16 18 C -0.49 -26.66 5.50 -16.17 -0.09 -26.75 16 19 C 0.02 0.92 5.46 84.66 0.46 1.38 16 20 N -0.93 -56.23 12.73 21.45 0.27 -55.96 16 21 Si 0.94 43.92 27.53 68.60 1.89 45.81 16 22 H -0.28 -12.57 7.11 99.48 0.71 -11.86 16 23 H -0.25 -10.87 6.11 99.48 0.61 -10.27 16 24 H -0.29 -13.64 7.11 99.48 0.71 -12.94 16 25 C 0.01 0.29 5.97 30.11 0.18 0.47 16 26 C -0.08 -3.61 5.54 30.66 0.17 -3.44 16 27 H 0.06 0.54 8.14 -2.39 -0.02 0.52 16 28 H 0.06 0.55 8.14 -2.39 -0.02 0.53 16 29 H 0.05 0.55 8.14 -2.38 -0.02 0.53 16 30 H 0.06 0.72 8.14 -2.39 -0.02 0.70 16 31 H 0.06 0.72 8.14 -2.39 -0.02 0.70 16 32 H 0.06 0.74 8.14 -2.39 -0.02 0.72 16 33 H 0.06 0.74 8.14 -2.39 -0.02 0.72 16 34 H 0.05 0.83 8.14 -2.39 -0.02 0.81 16 35 H 0.06 0.83 8.14 -2.39 -0.02 0.81 16 36 H 0.06 0.84 8.14 -2.39 -0.02 0.82 16 37 H 0.06 0.85 8.14 -2.38 -0.02 0.83 16 38 H 0.05 0.96 8.14 -2.39 -0.02 0.94 16 39 H 0.06 0.96 8.14 -2.39 -0.02 0.94 16 40 H 0.07 0.98 8.14 -2.39 -0.02 0.96 16 41 H 0.06 1.00 8.14 -2.39 -0.02 0.98 16 42 H 0.05 1.15 6.43 -2.39 -0.02 1.13 16 43 H 0.05 1.12 8.14 -2.39 -0.02 1.10 16 44 H 0.08 1.33 8.14 -2.39 -0.02 1.31 16 45 H 0.07 1.39 8.14 -2.39 -0.02 1.37 16 46 H 0.06 1.40 8.14 -2.38 -0.02 1.38 16 47 H 0.07 1.37 8.14 -2.38 -0.02 1.35 16 48 H 0.04 1.01 7.42 -2.39 -0.02 0.99 16 49 H 0.34 10.06 6.22 -89.69 -0.56 9.51 16 50 H 0.05 1.76 7.35 -2.39 -0.02 1.74 16 51 H 0.04 1.78 8.14 -2.39 -0.02 1.76 16 52 H 0.03 1.50 4.59 -2.39 -0.01 1.49 16 53 H 0.02 0.82 8.14 -2.39 -0.02 0.80 16 54 H 0.26 14.98 8.31 -92.70 -0.77 14.21 16 55 H 0.00 -0.24 8.14 -2.39 -0.02 -0.26 16 56 H 0.02 1.32 7.07 -2.39 -0.02 1.31 16 57 H 0.04 1.83 8.14 -2.39 -0.02 1.81 16 58 H 0.03 1.55 8.14 -2.38 -0.02 1.53 16 Total: -1.00 -59.21 430.84 3.35 -55.87 By element: Atomic # 1 Polarization: 22.05 SS G_CDS: 0.10 Total: 22.14 kcal Atomic # 6 Polarization: -47.87 SS G_CDS: 3.93 Total: -43.94 kcal Atomic # 7 Polarization: -77.30 SS G_CDS: -2.57 Total: -79.87 kcal Atomic # 14 Polarization: 43.92 SS G_CDS: 1.89 Total: 45.81 kcal Total: -59.21 3.35 -55.87 kcal The number of atoms in the molecule is 58 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. ZINC001258232052.mol2 58 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 -33.964 kcal (2) G-P(sol) polarization free energy of solvation -59.212 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -93.176 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy 3.346 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -55.866 kcal (6) G-S(sol) free energy of system = (1) + (5) -89.830 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.50 seconds