Wall clock time and date at job start Tue Mar 31 2020 23:25:26 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 O 1.45209 * 1 3 3 C 1.34233 * 116.99584 * 2 1 4 4 O 1.20828 * 119.99975 * 359.97438 * 3 2 1 5 5 C 1.50703 * 119.99525 * 180.02562 * 3 2 1 6 6 C 1.53002 * 109.46600 * 180.02562 * 5 3 2 7 7 N 1.46503 * 109.46664 * 179.97438 * 6 5 3 8 8 C 1.36942 * 119.99977 * 269.99597 * 7 6 5 9 9 H 1.07992 * 119.99535 * 149.03077 * 8 7 6 10 10 C 1.38808 * 120.00040 * 329.03446 * 8 7 6 11 11 N 1.31618 * 120.00064 * 334.84093 * 10 8 7 12 12 Si 1.86798 * 119.99834 * 154.84087 * 10 8 7 13 13 H 1.48499 * 109.47086 * 59.99931 * 12 10 8 14 14 H 1.48502 * 109.46978 * 179.97438 * 12 10 8 15 15 H 1.48504 * 109.47363 * 299.99667 * 12 10 8 16 16 C 1.46502 * 119.99976 * 90.00036 * 7 6 5 17 17 H 1.08996 * 109.46924 * 1.84550 * 16 7 6 18 18 C 1.52997 * 109.47185 * 241.84493 * 16 7 6 19 19 C 1.50703 * 109.46912 * 121.84411 * 16 7 6 20 20 O 1.21275 * 119.99912 * 7.49897 * 19 16 7 21 21 N 1.34772 * 119.99642 * 187.49226 * 19 16 7 22 22 C 1.46933 * 120.63104 * 183.09313 * 21 19 16 23 23 H 1.08993 * 109.58960 * 246.20803 * 22 21 19 24 24 C 1.52999 * 109.58193 * 6.63205 * 22 21 19 25 25 C 1.53622 * 108.54390 * 126.37017 * 22 21 19 26 26 C 1.53035 * 109.24161 * 54.85801 * 25 22 21 27 27 C 1.53043 * 109.54054 * 298.51127 * 26 25 22 28 28 C 1.46929 * 120.63563 * 3.38003 * 21 19 16 29 29 H 1.09000 * 109.58140 * 353.50850 * 28 21 19 30 30 C 1.52992 * 109.59100 * 113.79217 * 28 21 19 31 31 H 1.08992 * 109.47231 * 59.99891 * 1 2 3 32 32 H 1.08998 * 109.46507 * 179.97438 * 1 2 3 33 33 H 1.08997 * 109.46920 * 299.99559 * 1 2 3 34 34 H 1.08995 * 109.47069 * 59.99769 * 5 3 2 35 35 H 1.08993 * 109.46792 * 299.99708 * 5 3 2 36 36 H 1.08995 * 109.47604 * 60.00089 * 6 5 3 37 37 H 1.08997 * 109.46930 * 299.99718 * 6 5 3 38 38 H 0.97005 * 120.00106 * 179.97438 * 11 10 8 39 39 H 1.09006 * 109.46626 * 52.60192 * 18 16 7 40 40 H 1.08996 * 109.47090 * 172.60276 * 18 16 7 41 41 H 1.08998 * 109.46881 * 292.60688 * 18 16 7 42 42 H 1.09000 * 109.47233 * 54.66672 * 24 22 21 43 43 H 1.09007 * 109.47125 * 174.66917 * 24 22 21 44 44 H 1.09001 * 109.47207 * 294.66478 * 24 22 21 45 45 H 1.09003 * 109.63388 * 294.87233 * 25 22 21 46 46 H 1.08995 * 109.46048 * 174.74433 * 25 22 21 47 47 H 1.09004 * 109.46234 * 178.49244 * 26 25 22 48 48 H 1.09005 * 109.45026 * 58.52695 * 26 25 22 49 49 H 1.08997 * 109.49676 * 301.41638 * 27 26 25 50 50 H 1.09004 * 109.52382 * 181.33173 * 27 26 25 51 51 H 1.09008 * 109.46886 * 60.00017 * 30 28 21 52 52 H 1.08999 * 109.47443 * 180.02562 * 30 28 21 53 53 H 1.08998 * 109.47363 * 300.00372 * 30 28 21 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 8 1.4521 0.0000 0.0000 3 6 2.0614 1.1961 0.0000 4 8 1.4033 2.2094 -0.0005 5 6 3.5664 1.2749 -0.0006 6 6 4.0001 2.7422 0.0002 7 7 5.4631 2.8189 0.0002 8 6 6.1468 2.8542 1.1862 9 1 7.1352 2.4240 1.2526 10 6 5.5695 3.4428 2.3029 11 7 4.6472 4.3700 2.1554 12 14 6.1018 2.9188 4.0151 13 1 7.5542 3.1785 4.1831 14 1 5.3406 3.6927 5.0285 15 1 5.8340 1.4692 4.1949 16 6 6.1946 2.8579 -1.2685 17 1 5.4860 2.8543 -2.0967 18 6 7.1045 1.6321 -1.3705 19 6 7.0306 4.1104 -1.3280 20 8 7.1241 4.8239 -0.3518 21 7 7.6742 4.4374 -2.4660 22 6 8.5469 5.6183 -2.5197 23 1 8.1168 6.3603 -3.1924 24 6 8.6898 6.2144 -1.1178 25 6 9.9256 5.1838 -3.0396 26 6 9.7557 4.4669 -4.3809 27 6 8.8979 3.2144 -4.1869 28 6 7.5119 3.6235 -3.6784 29 1 6.9285 2.7328 -3.4451 30 6 6.7921 4.4412 -4.7526 31 1 -0.3633 0.5138 -0.8899 32 1 -0.3632 -1.0277 -0.0005 33 1 -0.3633 0.5138 0.8900 34 1 3.9557 0.7810 -0.8908 35 1 3.9564 0.7807 0.8891 36 1 3.6107 3.2357 0.8906 37 1 3.6100 3.2368 -0.8893 38 1 4.2435 4.7811 2.9358 39 1 6.5187 0.7294 -1.1962 40 1 7.5483 1.5909 -2.3651 41 1 7.8943 1.7027 -0.6227 42 1 9.0367 5.4442 -0.4291 43 1 9.4108 7.0316 -1.1423 44 1 7.7236 6.5924 -0.7835 45 1 10.3912 4.5079 -2.3223 46 1 10.5564 6.0625 -3.1740 47 1 10.7344 4.1806 -4.7662 48 1 9.2675 5.1351 -5.0904 49 1 9.3732 2.5572 -3.4588 50 1 8.7967 2.6912 -5.1378 51 1 7.3795 5.3287 -4.9881 52 1 6.6723 3.8355 -5.6509 53 1 5.8114 4.7418 -4.3841 RHF calculation, no. of doubly occupied orbitals= 66 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 ZINC000879476113.mol2 53 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 23:25:26 Heat of formation + Delta-G solvation = -81.942005 kcal Electronic energy + Delta-G solvation = -32671.236402 eV Core-core repulsion = 28544.720871 eV Total energy + Delta-G solvation = -4126.515531 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 1.56 seconds Orbital eigenvalues (eV) -40.19706 -39.91133 -37.34229 -36.23212 -35.55430 -33.51148 -32.35159 -31.64542 -31.26477 -28.93881 -28.30526 -27.21234 -26.36879 -24.77396 -23.77450 -22.91615 -22.17871 -20.98500 -20.12245 -19.76042 -17.96585 -17.26921 -16.55082 -16.14763 -15.94343 -15.82446 -15.53937 -14.95050 -14.86059 -14.36905 -14.01477 -13.83810 -13.67397 -13.31770 -13.29518 -13.17648 -12.93715 -12.65918 -12.56490 -12.26124 -12.05627 -12.00198 -11.70986 -11.61997 -11.41790 -11.41095 -11.29177 -11.24932 -10.93531 -10.76417 -10.73182 -10.65147 -10.56841 -10.48210 -10.40640 -10.20497 -10.07629 -9.95752 -9.84010 -9.66608 -8.40187 -7.99400 -7.90656 -6.64230 -5.66356 -3.15481 2.76342 3.16412 3.44329 3.51659 3.52199 3.56558 3.70461 4.56567 4.74251 4.89583 4.91566 5.12278 5.19173 5.27660 5.30189 5.33666 5.36135 5.42721 5.46557 5.51215 5.57603 5.62407 5.71059 5.71724 5.80261 5.86635 5.91339 5.95896 5.97688 5.99156 6.03082 6.04288 6.13267 6.20526 6.22843 6.25432 6.34696 6.41996 6.46950 6.51735 6.69827 6.78874 6.87344 6.96623 7.00608 7.31067 7.79245 7.92518 8.18208 8.27436 8.54318 9.20102 9.33346 9.87032 10.37084 11.35986 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.010663 B = 0.004188 C = 0.003319 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2625.179803 B = 6683.952330 C = 8433.249082 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.035 3.965 2 O -0.370 6.370 3 C 0.460 3.540 4 O -0.507 6.507 5 C -0.128 4.128 6 C 0.153 3.847 7 N -0.555 5.555 8 C -0.238 4.238 9 H 0.064 0.936 10 C 0.015 3.985 11 N -0.873 5.873 12 Si 0.891 3.109 13 H -0.283 1.283 14 H -0.292 1.292 15 H -0.285 1.285 16 C 0.148 3.852 17 H 0.067 0.933 18 C -0.154 4.154 19 C 0.489 3.511 20 O -0.472 6.472 21 N -0.621 5.621 22 C 0.147 3.853 23 H 0.057 0.943 24 C -0.134 4.134 25 C -0.130 4.130 26 C -0.118 4.118 27 C -0.129 4.129 28 C 0.131 3.869 29 H 0.098 0.902 30 C -0.164 4.164 31 H 0.057 0.943 32 H 0.093 0.907 33 H 0.059 0.941 34 H 0.085 0.915 35 H 0.103 0.897 36 H 0.117 0.883 37 H 0.030 0.970 38 H 0.252 0.748 39 H 0.060 0.940 40 H 0.048 0.952 41 H 0.057 0.943 42 H 0.067 0.933 43 H 0.029 0.971 44 H 0.079 0.921 45 H 0.065 0.935 46 H 0.064 0.936 47 H 0.058 0.942 48 H 0.063 0.937 49 H 0.067 0.933 50 H 0.068 0.932 51 H 0.058 0.942 52 H 0.061 0.939 53 H 0.058 0.942 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 3.382 -5.512 -14.208 15.611 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 -0.059 4.059 2 O -0.287 6.287 3 C 0.303 3.697 4 O -0.394 6.394 5 C -0.169 4.169 6 C 0.026 3.974 7 N -0.273 5.273 8 C -0.367 4.367 9 H 0.082 0.918 10 C -0.185 4.185 11 N -0.515 5.515 12 Si 0.721 3.279 13 H -0.209 1.209 14 H -0.218 1.218 15 H -0.211 1.211 16 C 0.036 3.964 17 H 0.085 0.915 18 C -0.214 4.214 19 C 0.275 3.725 20 O -0.341 6.341 21 N -0.360 5.360 22 C 0.043 3.957 23 H 0.075 0.925 24 C -0.191 4.191 25 C -0.168 4.168 26 C -0.155 4.155 27 C -0.167 4.167 28 C 0.027 3.973 29 H 0.116 0.884 30 C -0.223 4.223 31 H 0.076 0.924 32 H 0.112 0.888 33 H 0.077 0.923 34 H 0.103 0.897 35 H 0.121 0.879 36 H 0.134 0.866 37 H 0.049 0.951 38 H 0.063 0.937 39 H 0.079 0.921 40 H 0.067 0.933 41 H 0.076 0.924 42 H 0.086 0.914 43 H 0.048 0.952 44 H 0.098 0.902 45 H 0.083 0.917 46 H 0.083 0.917 47 H 0.077 0.923 48 H 0.081 0.919 49 H 0.086 0.914 50 H 0.086 0.914 51 H 0.077 0.923 52 H 0.080 0.920 53 H 0.077 0.923 Dipole moment (debyes) X Y Z Total from point charges 3.086 -4.675 -13.448 14.568 hybrid contribution 0.101 -0.141 0.718 0.738 sum 3.187 -4.815 -12.730 13.979 Atomic orbital electron populations 1.23130 0.77798 1.02816 1.02198 1.86571 1.22468 1.34924 1.84751 1.24502 0.92839 0.80709 0.71604 1.90643 1.67364 1.36271 1.45096 1.22367 0.84478 1.05563 1.04468 1.20940 0.83183 0.89133 1.04132 1.43889 1.00950 1.82545 0.99946 1.18760 1.01473 1.31027 0.85482 0.91809 1.24949 0.99684 0.95456 0.98449 1.69992 1.29725 1.23128 1.28688 0.86549 0.78220 0.78147 0.84982 1.20918 1.21818 1.21118 1.20557 0.93315 0.91087 0.91416 0.91490 1.22256 1.00447 0.98474 1.00193 1.22255 0.79840 0.88590 0.81804 1.90813 1.58729 1.49913 1.34635 1.48701 1.48209 1.28026 1.11107 1.21155 0.89117 0.87285 0.98149 0.92509 1.22178 1.02485 0.99721 0.94669 1.22074 0.97403 1.00340 0.97029 1.21518 0.99458 0.97137 0.97426 1.21923 0.95867 0.97801 1.01116 1.21285 0.95961 0.94636 0.85465 0.88441 1.22192 1.00893 1.00729 0.98445 0.92383 0.88835 0.92251 0.89677 0.87860 0.86562 0.95109 0.93739 0.92112 0.93325 0.92387 0.91427 0.95243 0.90175 0.91652 0.91696 0.92324 0.91883 0.91441 0.91361 0.92338 0.92017 0.92287 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 20. 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 0.03 0.43 10.56 101.05 1.07 1.50 16 2 O -0.37 -5.96 10.57 -39.27 -0.41 -6.37 16 3 C 0.46 8.67 7.96 36.01 0.29 8.96 16 4 O -0.51 -11.00 15.73 -18.75 -0.29 -11.29 16 5 C -0.13 -2.43 6.14 -27.88 -0.17 -2.60 16 6 C 0.15 3.53 4.56 -4.04 -0.02 3.51 16 7 N -0.56 -13.00 2.28 -166.98 -0.38 -13.39 16 8 C -0.24 -6.28 7.25 -15.06 -0.11 -6.39 16 9 H 0.06 1.72 7.10 -52.49 -0.37 1.34 16 10 C 0.02 0.42 4.93 -17.43 -0.09 0.33 16 11 N -0.87 -25.76 11.25 55.49 0.62 -25.13 16 12 Si 0.89 22.02 29.62 -169.99 -5.04 16.98 16 13 H -0.28 -7.04 7.11 56.52 0.40 -6.64 16 14 H -0.29 -7.34 7.11 56.52 0.40 -6.94 16 15 H -0.28 -6.84 7.11 56.52 0.40 -6.44 16 16 C 0.15 2.87 2.32 -69.08 -0.16 2.71 16 17 H 0.07 1.19 7.03 -51.93 -0.37 0.83 16 18 C -0.15 -2.51 8.69 37.16 0.32 -2.19 16 19 C 0.49 10.03 6.79 -10.99 -0.07 9.96 16 20 O -0.47 -11.87 10.49 5.56 0.06 -11.81 16 21 N -0.62 -9.94 2.68 -157.48 -0.42 -10.36 16 22 C 0.15 2.20 3.09 -67.37 -0.21 1.99 16 23 H 0.06 0.82 7.48 -51.93 -0.39 0.43 16 24 C -0.13 -2.36 7.61 37.16 0.28 -2.08 16 25 C -0.13 -1.57 5.40 -26.39 -0.14 -1.71 16 26 C -0.12 -1.18 5.67 -26.69 -0.15 -1.33 16 27 C -0.13 -1.33 5.41 -26.61 -0.14 -1.47 16 28 C 0.13 1.61 2.38 -67.60 -0.16 1.45 16 29 H 0.10 1.20 4.27 -51.93 -0.22 0.98 16 30 C -0.16 -1.79 9.02 37.15 0.34 -1.45 16 31 H 0.06 0.69 8.13 -51.93 -0.42 0.27 16 32 H 0.09 0.83 8.14 -51.93 -0.42 0.41 16 33 H 0.06 0.75 8.13 -51.93 -0.42 0.33 16 34 H 0.08 1.39 8.14 -51.93 -0.42 0.96 16 35 H 0.10 2.01 8.14 -51.93 -0.42 1.59 16 36 H 0.12 3.18 5.15 -51.93 -0.27 2.92 16 37 H 0.03 0.70 7.86 -51.93 -0.41 0.30 16 38 H 0.25 7.32 8.31 -40.82 -0.34 6.98 16 39 H 0.06 0.95 8.14 -51.93 -0.42 0.52 16 40 H 0.05 0.64 5.43 -51.93 -0.28 0.36 16 41 H 0.06 1.06 7.32 -51.93 -0.38 0.68 16 42 H 0.07 1.37 6.91 -51.93 -0.36 1.01 16 43 H 0.03 0.44 8.14 -51.93 -0.42 0.02 16 44 H 0.08 1.69 6.58 -51.93 -0.34 1.35 16 45 H 0.06 0.87 8.14 -51.93 -0.42 0.45 16 46 H 0.06 0.70 8.14 -51.93 -0.42 0.27 16 47 H 0.06 0.52 8.14 -51.93 -0.42 0.09 16 48 H 0.06 0.60 6.49 -51.93 -0.34 0.26 16 49 H 0.07 0.75 7.95 -51.93 -0.41 0.34 16 50 H 0.07 0.57 8.14 -51.93 -0.42 0.15 16 51 H 0.06 0.62 5.71 -51.92 -0.30 0.33 16 52 H 0.06 0.54 8.14 -51.93 -0.42 0.12 16 53 H 0.06 0.72 8.14 -51.93 -0.42 0.30 16 LS Contribution 401.12 15.07 6.04 6.04 Total: -1.00 -32.59 401.12 -8.01 -40.61 By element: Atomic # 1 Polarization: 12.61 SS G_CDS: -9.06 Total: 3.55 kcal Atomic # 6 Polarization: 10.30 SS G_CDS: 0.87 Total: 11.17 kcal Atomic # 7 Polarization: -48.70 SS G_CDS: -0.18 Total: -48.88 kcal Atomic # 8 Polarization: -28.83 SS G_CDS: -0.65 Total: -29.48 kcal Atomic # 14 Polarization: 22.02 SS G_CDS: -5.04 Total: 16.98 kcal Total LS contribution 6.04 Total: 6.04 kcal Total: -32.59 -8.01 -40.61 kcal The number of atoms in the molecule is 53 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. ZINC000879476113.mol2 53 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 -41.335 kcal (2) G-P(sol) polarization free energy of solvation -32.593 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -73.927 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.015 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -40.607 kcal (6) G-S(sol) free energy of system = (1) + (5) -81.942 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.57 seconds