Wall clock time and date at job start Sun Mar 7 2021 01:06:02 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= 0 * 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 1.45201 * 1 3 3 C 1.34233 * 117.00093 * 2 1 4 4 O 1.20824 * 119.99856 * 359.97438 * 3 2 1 5 5 C 1.50699 * 120.00207 * 180.02562 * 3 2 1 6 6 H 1.08994 * 112.85226 * 48.80038 * 5 3 2 7 7 C 1.53785 * 113.61283 * 180.02562 * 5 3 2 8 8 C 1.53786 * 87.08056 * 139.97584 * 7 5 3 9 9 C 1.53003 * 113.61306 * 89.11575 * 8 7 5 10 10 N 1.46493 * 109.47432 * 59.97092 * 9 8 7 11 11 C 1.34776 * 120.00338 * 185.08493 * 10 9 8 12 12 O 1.21285 * 119.99731 * 0.02562 * 11 10 9 13 13 C 1.50703 * 119.99963 * 180.02562 * 11 10 9 14 14 N 1.46503 * 109.46656 * 180.02562 * 13 11 10 15 15 C 1.36835 * 125.06677 * 264.69353 * 14 13 11 16 16 C 1.34232 * 109.94245 * 179.85340 * 15 14 13 17 17 C 1.50695 * 126.50110 * 180.13304 * 16 15 14 18 18 O 1.42894 * 109.47376 * 255.31571 * 17 16 15 19 19 Si 1.86301 * 109.47194 * 15.32305 * 17 16 15 20 20 C 1.46492 * 106.99605 * 0.40407 * 16 15 14 21 21 C 1.39591 * 134.03701 * 179.73230 * 20 16 15 22 22 C 1.36658 * 119.76685 * 180.02562 * 21 20 16 23 23 C 1.38791 * 120.52867 * 359.97438 * 22 21 20 24 24 C 1.37784 * 120.66485 * 359.97438 * 23 22 21 25 25 C 1.37691 * 125.06013 * 85.00935 * 14 13 11 26 26 O 1.42895 * 113.61202 * 220.01708 * 8 7 5 27 27 C 1.42911 * 113.99655 * 174.60784 * 26 8 7 28 28 C 1.53782 * 113.60947 * 277.49490 * 5 3 2 29 29 H 1.09003 * 109.46827 * 179.97438 * 1 2 3 30 30 H 1.09001 * 109.47232 * 299.99952 * 1 2 3 31 31 H 1.08997 * 109.47013 * 60.00132 * 1 2 3 32 32 H 1.09000 * 113.61173 * 254.52040 * 7 5 3 33 33 H 1.08995 * 113.61553 * 25.43124 * 7 5 3 34 34 H 1.08992 * 109.46963 * 179.97438 * 9 8 7 35 35 H 1.09002 * 109.46838 * 299.97030 * 9 8 7 36 36 H 0.97006 * 119.99538 * 5.09161 * 10 9 8 37 37 H 1.08995 * 109.47365 * 300.00327 * 13 11 10 38 38 H 1.09004 * 109.46882 * 60.00944 * 13 11 10 39 39 H 1.08002 * 125.02528 * 0.02562 * 15 14 13 40 40 H 1.09007 * 109.46775 * 135.32198 * 17 16 15 41 41 H 0.96704 * 113.99969 * 60.00647 * 18 17 16 42 42 H 1.48497 * 110.00023 * 58.67517 * 19 17 16 43 43 H 1.48495 * 109.99888 * 179.97438 * 19 17 16 44 44 H 1.08005 * 120.11557 * 359.97438 * 21 20 16 45 45 H 1.08005 * 119.73563 * 180.02562 * 22 21 20 46 46 H 1.08003 * 119.66576 * 180.02562 * 23 22 21 47 47 H 1.08000 * 120.10856 * 180.02562 * 24 23 22 48 48 H 1.09004 * 109.46401 * 185.97671 * 27 26 8 49 49 H 1.08992 * 109.46800 * 305.98033 * 27 26 8 50 50 H 1.09000 * 109.46823 * 65.97835 * 27 26 8 51 51 H 1.08999 * 113.61896 * 334.56507 * 28 5 3 52 52 H 1.08993 * 113.61684 * 105.39020 * 28 5 3 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 1.4520 0.0000 0.0000 3 6 2.0614 1.1960 0.0000 4 8 1.4034 2.2093 -0.0005 5 6 3.5664 1.2749 -0.0006 6 1 4.0234 0.6366 -0.7566 7 6 4.1077 2.7143 0.0001 8 6 5.1814 2.2263 0.9871 9 6 6.4442 1.6953 0.3057 10 7 7.0452 2.7573 -0.5049 11 6 8.1142 2.4897 -1.2808 12 8 8.5785 1.3696 -1.3082 13 6 8.7327 3.5824 -2.1142 14 7 9.8706 3.0415 -2.8619 15 6 11.1770 3.1047 -2.4598 16 6 11.9655 2.5129 -3.3708 17 6 13.4639 2.3685 -3.3008 18 8 14.0744 3.2979 -4.1983 19 14 14.0405 2.7127 -1.5631 20 6 11.0938 2.0397 -4.4489 21 6 11.3159 1.3669 -5.6516 22 6 10.2596 1.0602 -6.4625 23 6 8.9669 1.4120 -6.0998 24 6 8.7250 2.0756 -4.9167 25 6 9.7853 2.3991 -4.0768 26 8 5.4637 3.1584 2.0327 27 6 6.3695 2.6654 3.0220 28 6 4.1916 1.1233 1.3962 29 1 -0.3633 -1.0277 -0.0005 30 1 -0.3634 0.5138 0.8900 31 1 -0.3633 0.5138 -0.8900 32 1 4.5105 3.0297 -0.9624 33 1 3.4174 3.4402 0.4297 34 1 7.1565 1.3697 1.0637 35 1 6.1844 0.8523 -0.3346 36 1 6.6736 3.6531 -0.4832 37 1 7.9912 3.9708 -2.8124 38 1 9.0748 4.3867 -1.4629 39 1 11.5222 3.5607 -1.5437 40 1 13.7446 1.3536 -3.5825 41 1 13.8677 4.2231 -4.0070 42 1 13.3882 1.7732 -0.6160 43 1 15.5166 2.5730 -1.4807 44 1 12.3191 1.0903 -5.9406 45 1 10.4319 0.5392 -7.3928 46 1 8.1423 1.1624 -6.7510 47 1 7.7154 2.3447 -4.6431 48 1 6.4498 3.3886 3.8336 49 1 5.9987 1.7185 3.4143 50 1 7.3507 2.5131 2.5725 51 1 3.5242 1.4146 2.2073 52 1 4.6608 0.1536 1.5617 There are 72 doubly filled levels RHF calculation, no. of doubly occupied orbitals= 72 No. of singly occupied orbitals= 1 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=0 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 s_22_15102698_9818708.mol2 52 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Sun Mar 7 2021 01:06:02 Heat of formation + Delta-G solvation = -86.411425 kcal Electronic energy + Delta-G solvation = -36502.296841 eV Core-core repulsion = 31629.131183 eV Total energy + Delta-G solvation = -4873.165658 eV No. of doubly occupied orbitals = 72 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 389.176 amu Computer time = 1.07 seconds Orbital eigenvalues (eV) -42.54480 -42.28539 -41.02322 -40.16059 -38.00504 -37.75346 -37.54267 -36.95971 -35.60080 -34.06124 -31.54601 -30.22314 -30.10351 -29.28573 -28.27273 -28.12779 -27.00194 -25.88633 -25.26652 -23.62064 -22.61579 -22.16702 -21.69832 -20.63663 -20.28251 -19.36519 -18.67198 -18.47793 -18.16193 -17.71018 -17.56324 -17.36780 -16.93437 -16.84682 -16.53029 -16.36111 -16.30772 -16.14834 -15.88116 -15.70036 -15.30327 -15.22127 -14.74749 -14.64522 -14.57507 -14.36108 -14.34513 -14.06575 -13.91376 -13.78712 -13.56421 -13.38708 -13.27412 -13.22762 -12.84169 -12.74979 -12.59772 -12.47386 -12.26019 -12.12458 -12.01838 -11.85424 -11.72694 -11.68475 -11.50369 -11.23673 -10.82009 -10.43222 -10.38077 -10.22973 -9.03482 -8.53995 -5.03231 0.26692 0.77881 1.05811 1.32838 1.34891 1.40492 1.56525 1.65199 1.77068 1.99319 2.06008 2.51674 2.96353 3.01434 3.10507 3.12641 3.24833 3.45734 3.47354 3.64306 3.74064 3.76770 3.80850 3.84847 3.88292 4.04160 4.06720 4.10514 4.17398 4.18911 4.23403 4.30386 4.34291 4.36221 4.36865 4.40154 4.54331 4.57258 4.60588 4.62483 4.67197 4.70450 4.78639 4.87464 4.89280 4.97621 5.05476 5.24411 5.30246 5.63540 5.79717 5.85147 5.88963 5.89545 6.08965 6.28186 6.35067 6.64286 6.75313 6.91985 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.034 3.966 2 O -0.357 6.357 3 C 0.473 3.527 4 O -0.500 6.500 5 C -0.110 4.110 6 H 0.131 0.869 7 C -0.098 4.098 8 C 0.076 3.924 9 C 0.113 3.887 10 N -0.723 5.723 11 C 0.491 3.509 12 O -0.513 6.513 13 C 0.092 3.908 14 N -0.466 5.466 15 C 0.069 3.931 16 C -0.197 4.197 17 C -0.028 4.028 18 O -0.542 6.542 19 Si 0.682 3.318 20 C -0.087 4.087 21 C -0.066 4.066 22 C -0.146 4.146 23 C -0.097 4.097 24 C -0.128 4.128 25 C 0.109 3.891 26 O -0.362 6.362 27 C 0.024 3.976 28 C -0.135 4.135 29 H 0.104 0.896 30 H 0.064 0.936 31 H 0.065 0.935 32 H 0.088 0.912 33 H 0.114 0.886 34 H 0.079 0.921 35 H 0.087 0.913 36 H 0.407 0.593 37 H 0.119 0.881 38 H 0.125 0.875 39 H 0.171 0.829 40 H 0.111 0.889 41 H 0.376 0.624 42 H -0.256 1.256 43 H -0.255 1.255 44 H 0.122 0.878 45 H 0.123 0.877 46 H 0.125 0.875 47 H 0.115 0.885 48 H 0.091 0.909 49 H 0.047 0.953 50 H 0.046 0.954 51 H 0.104 0.896 52 H 0.091 0.909 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -3.000 3.265 3.077 5.397 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 -0.060 4.060 2 O -0.273 6.273 3 C 0.315 3.685 4 O -0.387 6.387 5 C -0.129 4.129 6 H 0.148 0.852 7 C -0.136 4.136 8 C 0.036 3.964 9 C -0.011 4.011 10 N -0.378 5.378 11 C 0.275 3.725 12 O -0.387 6.387 13 C -0.034 4.034 14 N -0.149 5.149 15 C -0.056 4.056 16 C -0.205 4.205 17 C -0.140 4.140 18 O -0.347 6.347 19 Si 0.584 3.416 20 C -0.091 4.091 21 C -0.084 4.084 22 C -0.165 4.165 23 C -0.116 4.116 24 C -0.148 4.148 25 C 0.004 3.996 26 O -0.280 6.280 27 C -0.072 4.072 28 C -0.173 4.173 29 H 0.122 0.878 30 H 0.083 0.917 31 H 0.083 0.917 32 H 0.107 0.893 33 H 0.132 0.868 34 H 0.098 0.902 35 H 0.105 0.895 36 H 0.242 0.758 37 H 0.137 0.863 38 H 0.143 0.857 39 H 0.188 0.812 40 H 0.128 0.872 41 H 0.223 0.777 42 H -0.181 1.181 43 H -0.179 1.179 44 H 0.140 0.860 45 H 0.141 0.859 46 H 0.143 0.857 47 H 0.133 0.867 48 H 0.110 0.890 49 H 0.065 0.935 50 H 0.064 0.936 51 H 0.122 0.878 52 H 0.109 0.891 Dipole moment (debyes) X Y Z Total from point charges -2.559 2.171 3.717 5.008 hybrid contribution -0.723 -0.347 -0.211 0.829 sum -3.282 1.824 3.506 5.137 Atomic orbital electron populations 1.23344 0.75731 1.04113 1.02790 1.86513 1.23872 1.33142 1.83770 1.23320 0.91361 0.81537 0.72292 1.90699 1.66868 1.36381 1.44793 1.22296 0.88255 1.00938 1.01389 0.85161 1.23062 0.96072 0.95237 0.99207 1.23049 0.92561 0.91289 0.89548 1.21629 0.93658 0.90837 0.95009 1.45803 1.32002 1.14113 1.45847 1.21058 0.80509 0.90463 0.80476 1.90829 1.60970 1.22694 1.64221 1.21574 0.89843 0.95286 0.96675 1.43193 1.05094 1.50006 1.16654 1.21505 0.82039 1.02569 0.99480 1.20634 0.95267 1.08103 0.96492 1.24327 0.88886 0.95693 1.05090 1.86503 1.72656 1.19070 1.56463 0.95410 0.80905 0.89909 0.75401 1.18945 0.91479 1.02686 0.95958 1.20309 0.99233 0.96606 0.92283 1.20672 0.92501 1.02817 1.00476 1.20825 0.97148 0.97967 0.95649 1.19949 0.96288 1.03600 0.94997 1.18163 0.95652 0.98799 0.86953 1.88024 1.65281 1.39598 1.35116 1.22835 0.92571 1.00416 0.91425 1.23495 0.97892 1.00343 0.95545 0.87757 0.91676 0.91657 0.89319 0.86760 0.90244 0.89458 0.75764 0.86301 0.85701 0.81209 0.87181 0.77708 1.18094 1.17919 0.85984 0.85942 0.85732 0.86738 0.89048 0.93467 0.93590 0.87750 0.89072 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 13. 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 -0.03 10.56 101.05 1.07 1.03 16 2 O -0.36 -0.30 10.57 -39.26 -0.41 -0.72 16 3 C 0.47 0.50 7.48 36.00 0.27 0.77 16 4 O -0.50 -1.94 15.65 -18.75 -0.29 -2.23 16 5 C -0.11 0.21 3.91 -90.96 -0.36 -0.15 16 6 H 0.13 -0.43 7.66 -51.93 -0.40 -0.83 16 7 C -0.10 0.22 6.57 -25.91 -0.17 0.05 16 8 C 0.08 -0.20 0.88 -89.82 -0.08 -0.28 16 9 C 0.11 -0.26 4.81 -4.04 -0.02 -0.28 16 10 N -0.72 2.21 5.12 -60.30 -0.31 1.91 16 11 C 0.49 -0.29 7.90 -10.98 -0.09 -0.38 16 12 O -0.51 -2.32 16.42 5.55 0.09 -2.23 16 13 C 0.09 -0.28 6.48 -5.19 -0.03 -0.31 16 14 N -0.47 -0.37 2.27 -115.70 -0.26 -0.63 16 15 C 0.07 0.03 9.89 -16.73 -0.17 -0.14 16 16 C -0.20 -0.44 5.57 -102.71 -0.57 -1.01 16 17 C -0.03 -0.04 3.06 36.00 0.11 0.07 16 18 O -0.54 -0.82 12.88 -35.23 -0.45 -1.27 16 19 Si 0.68 -0.22 30.76 -169.99 -5.23 -5.45 16 20 C -0.09 -0.35 6.35 -105.14 -0.67 -1.02 16 21 C -0.07 -0.24 10.05 -39.65 -0.40 -0.64 16 22 C -0.15 -0.38 9.97 -39.95 -0.40 -0.78 16 23 C -0.10 -0.20 10.01 -39.54 -0.40 -0.60 16 24 C -0.13 -0.30 10.00 -39.43 -0.39 -0.69 16 25 C 0.11 0.34 6.80 -83.99 -0.57 -0.23 16 26 O -0.36 0.45 10.65 -35.23 -0.38 0.08 16 27 C 0.02 -0.06 10.32 101.05 1.04 0.98 16 28 C -0.13 0.34 6.60 -25.94 -0.17 0.17 16 29 H 0.10 -0.34 8.14 -51.93 -0.42 -0.77 16 30 H 0.06 -0.06 8.13 -51.93 -0.42 -0.49 16 31 H 0.06 -0.06 8.13 -51.93 -0.42 -0.48 16 32 H 0.09 -0.32 7.54 -51.93 -0.39 -0.71 16 33 H 0.11 -0.06 7.44 -51.93 -0.39 -0.44 16 34 H 0.08 -0.13 6.38 -51.93 -0.33 -0.46 16 35 H 0.09 -0.16 7.34 -51.93 -0.38 -0.54 16 36 H 0.41 -2.12 8.10 -40.82 -0.33 -2.45 16 37 H 0.12 -0.60 8.14 -51.93 -0.42 -1.02 16 38 H 0.13 -0.79 8.12 -51.93 -0.42 -1.21 16 39 H 0.17 -0.55 6.35 -52.49 -0.33 -0.88 16 40 H 0.11 0.26 7.96 -51.93 -0.41 -0.15 16 41 H 0.38 -0.98 8.70 45.56 0.40 -0.59 16 42 H -0.26 -0.69 7.11 56.52 0.40 -0.29 16 43 H -0.25 -0.73 7.11 56.52 0.40 -0.32 16 44 H 0.12 0.35 8.06 -52.48 -0.42 -0.07 16 45 H 0.12 0.09 8.06 -52.48 -0.42 -0.33 16 46 H 0.12 -0.01 8.06 -52.48 -0.42 -0.43 16 47 H 0.11 0.03 8.06 -52.49 -0.42 -0.39 16 48 H 0.09 -0.30 8.14 -51.93 -0.42 -0.72 16 49 H 0.05 -0.15 7.82 -51.93 -0.41 -0.55 16 50 H 0.05 -0.13 6.73 -51.93 -0.35 -0.48 16 51 H 0.10 -0.18 8.09 -51.93 -0.42 -0.61 16 52 H 0.09 -0.33 8.10 -51.93 -0.42 -0.75 16 LS Contribution 434.98 15.07 6.56 6.56 Total: 0.00 -13.12 434.98 -10.27 -23.39 By element: Atomic # 1 Polarization: -8.38 SS G_CDS: -7.59 Total: -15.97 kcal Atomic # 6 Polarization: -1.44 SS G_CDS: -1.99 Total: -3.44 kcal Atomic # 7 Polarization: 1.85 SS G_CDS: -0.57 Total: 1.28 kcal Atomic # 8 Polarization: -4.92 SS G_CDS: -1.45 Total: -6.37 kcal Atomic # 14 Polarization: -0.22 SS G_CDS: -5.23 Total: -5.45 kcal Total LS contribution 6.56 Total: 6.56 kcal Total: -13.12 -10.27 -23.39 kcal The number of atoms in the molecule is 52 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. s_22_15102698_9818708.mol2 52 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 -63.023 kcal (2) G-P(sol) polarization free energy of solvation -13.118 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -76.140 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.271 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -23.389 kcal (6) G-S(sol) free energy of system = (1) + (5) -86.411 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.07 seconds