Wall clock time and date at job start Fri Apr 10 2020 22:30:35 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 C 1.52995 * 1 3 3 C 1.53001 * 109.47192 * 2 1 4 4 C 1.53000 * 109.47285 * 119.99898 * 2 1 3 5 5 C 1.53002 * 109.47289 * 239.99697 * 2 1 3 6 6 C 1.53002 * 109.46547 * 66.03371 * 5 2 1 7 7 H 1.08989 * 110.64471 * 48.88426 * 6 5 2 8 8 C 1.55163 * 110.72024 * 285.73827 * 6 5 2 9 9 C 1.55119 * 101.48550 * 206.27091 * 8 6 5 10 10 N 1.47425 * 104.94691 * 36.77725 * 9 8 6 11 11 C 1.34775 * 125.65301 * 156.03201 * 10 9 8 12 12 O 1.21590 * 119.99844 * 179.97438 * 11 10 9 13 13 N 1.34780 * 119.99834 * 359.95988 * 11 10 9 14 14 C 1.46492 * 119.99850 * 180.02562 * 13 11 10 15 15 C 1.52999 * 109.47147 * 180.02562 * 14 13 11 16 16 C 1.50695 * 109.47416 * 179.97438 * 15 14 13 17 17 H 1.08003 * 120.00160 * 0.02562 * 16 15 14 18 18 C 1.37877 * 120.00408 * 179.97438 * 16 15 14 19 19 N 1.31514 * 120.00211 * 180.02562 * 18 16 15 20 20 Si 1.86801 * 119.99781 * 0.02562 * 18 16 15 21 21 H 1.48501 * 109.47329 * 89.99544 * 20 18 16 22 22 H 1.48501 * 109.47308 * 209.99689 * 20 18 16 23 23 H 1.48506 * 109.47115 * 329.99345 * 20 18 16 24 24 C 1.47028 * 108.70178 * 336.00107 * 10 9 8 25 25 C 1.52999 * 109.88041 * 241.64111 * 24 10 9 26 26 C 1.52990 * 110.01521 * 120.54695 * 24 10 9 27 27 H 1.08993 * 109.47590 * 43.03383 * 1 2 3 28 28 H 1.09001 * 109.47150 * 283.03411 * 1 2 3 29 29 H 1.09002 * 109.47062 * 163.04052 * 1 2 3 30 30 H 1.08996 * 109.47284 * 59.99812 * 3 2 1 31 31 H 1.09006 * 109.46926 * 180.02562 * 3 2 1 32 32 H 1.09003 * 109.46906 * 299.99639 * 3 2 1 33 33 H 1.09003 * 109.47279 * 60.00043 * 4 2 1 34 34 H 1.09000 * 109.47360 * 180.02562 * 4 2 1 35 35 H 1.09001 * 109.47388 * 299.99486 * 4 2 1 36 36 H 1.08996 * 109.47461 * 186.03403 * 5 2 1 37 37 H 1.08998 * 109.46667 * 306.03639 * 5 2 1 38 38 H 1.09003 * 111.00286 * 324.21400 * 8 6 5 39 39 H 1.08999 * 111.00201 * 88.06638 * 8 6 5 40 40 H 1.09002 * 110.21022 * 277.96029 * 9 8 6 41 41 H 1.09001 * 110.51742 * 155.75257 * 9 8 6 42 42 H 0.96998 * 119.99709 * 359.97438 * 13 11 10 43 43 H 1.09005 * 109.47523 * 300.00090 * 14 13 11 44 44 H 1.08998 * 109.47354 * 60.00395 * 14 13 11 45 45 H 1.09001 * 109.47435 * 300.00423 * 15 14 13 46 46 H 1.09004 * 109.47030 * 60.00245 * 15 14 13 47 47 H 0.97002 * 119.99322 * 180.02562 * 19 18 16 48 48 H 1.09003 * 109.47117 * 177.80584 * 25 24 10 49 49 H 1.09002 * 109.47418 * 297.80237 * 25 24 10 50 50 H 1.09003 * 109.47161 * 57.80532 * 25 24 10 51 51 H 1.09007 * 109.47442 * 302.11641 * 26 24 10 52 52 H 1.08996 * 109.47516 * 62.11248 * 26 24 10 53 53 H 1.08995 * 109.47631 * 182.11306 * 26 24 10 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 1.5299 0.0000 0.0000 3 6 2.0400 1.4425 0.0000 4 6 2.0400 -0.7212 1.2492 5 6 2.0400 -0.7213 -1.2492 6 6 1.6575 0.0822 -2.4938 7 1 1.9270 1.1312 -2.3718 8 6 0.1429 -0.0638 -2.7974 9 6 0.1094 0.1850 -4.3282 10 7 1.3406 -0.4419 -4.8424 11 6 1.5323 -0.8792 -6.1027 12 8 2.5938 -1.3820 -6.4169 13 7 0.5471 -0.7594 -7.0147 14 6 0.7552 -1.2352 -8.3844 15 6 -0.5080 -0.9818 -9.2098 16 6 -0.2938 -1.4706 -10.6190 17 1 0.6489 -1.9179 -10.8981 18 6 -1.3015 -1.3480 -11.5520 19 7 -1.1147 -1.7751 -12.7817 20 14 -2.9322 -0.5752 -11.0693 21 1 -2.8746 0.8899 -11.3046 22 1 -4.0214 -1.1655 -11.8880 23 1 -3.1970 -0.8356 -9.6314 24 6 2.3253 -0.5104 -3.7527 25 6 3.5644 0.3090 -4.1188 26 6 2.7214 -1.9656 -3.4955 27 1 -0.3634 0.7511 -0.7012 28 1 -0.3633 0.2318 1.0012 29 1 -0.3633 -0.9830 -0.2998 30 1 1.6766 1.9564 0.8899 31 1 3.1300 1.4425 -0.0005 32 1 1.6767 1.9563 -0.8900 33 1 1.6767 -1.7489 1.2493 34 1 3.1300 -0.7208 1.2495 35 1 1.6768 -0.2074 2.1393 36 1 3.1246 -0.8158 -1.1969 37 1 1.5911 -1.7130 -1.3048 38 1 -0.2086 -1.0674 -2.5582 39 1 -0.4369 0.6892 -2.2636 40 1 0.1133 1.2551 -4.5360 41 1 -0.7688 -0.2837 -4.7723 42 1 -0.2999 -0.3588 -6.7637 43 1 1.5939 -0.7012 -8.8312 44 1 0.9713 -2.3034 -8.3691 45 1 -1.3470 -1.5154 -8.7632 46 1 -0.7237 0.0866 -9.2251 47 1 -1.8236 -1.6885 -13.4381 48 1 4.2731 0.2857 -3.2910 49 1 4.0306 -0.1149 -5.0082 50 1 3.2723 1.3401 -4.3181 51 1 1.8318 -2.5469 -3.2530 52 1 3.1921 -2.3772 -4.3883 53 1 3.4225 -2.0095 -2.6621 RHF calculation, no. of doubly occupied orbitals= 61 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 ZINC000413446008.mol2 53 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 22:30:35 Heat of formation + Delta-G solvation = -50.148221 kcal Electronic energy + Delta-G solvation = -27363.561509 eV Core-core repulsion = 23848.477566 eV Total energy + Delta-G solvation = -3515.083943 eV No. of doubly occupied orbitals = 61 Molecular weight (most abundant/longest-lived isotopes) = 310.236 amu Computer time = 0.60 seconds Orbital eigenvalues (eV) -40.86785 -38.86790 -36.92305 -34.89623 -33.28614 -32.39829 -31.72947 -29.87746 -28.03756 -27.83722 -27.52059 -26.91268 -24.82592 -24.26182 -22.48162 -20.89301 -20.37241 -19.08755 -18.52378 -17.36441 -16.84228 -16.38710 -15.43460 -15.37190 -15.00520 -14.64326 -14.38538 -14.19699 -13.97233 -13.81315 -13.73558 -13.45617 -13.32222 -12.98622 -12.73503 -12.57199 -12.49978 -12.28515 -12.07456 -12.01329 -11.96112 -11.68030 -11.45787 -11.44704 -11.31181 -11.15597 -11.08545 -10.82608 -10.65321 -10.53385 -10.34881 -10.29392 -10.16289 -9.93991 -9.56687 -9.28703 -8.68962 -8.59356 -8.21984 -6.08942 -4.08608 2.86329 3.26401 3.33843 3.35361 3.58001 4.11647 4.32698 4.35062 4.39473 4.41497 4.54582 4.63590 4.86333 4.99233 5.07466 5.10854 5.15555 5.23995 5.24700 5.26607 5.35183 5.38178 5.44926 5.47620 5.51964 5.54879 5.61790 5.63436 5.66754 5.70295 5.72868 5.86356 5.89188 5.94290 5.95564 6.02866 6.07887 6.09215 6.15126 6.28800 6.31539 6.39830 6.59978 6.62402 6.89506 7.17645 7.28070 7.40976 7.70284 8.34189 8.48664 8.95512 9.01231 9.51342 11.04142 Molecular weight = 310.24amu Principal moments of inertia in cm(-1) A = 0.025738 B = 0.002724 C = 0.002561 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1087.643265 B =10277.493196 C =10932.138789 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.150 4.150 2 C -0.070 4.070 3 C -0.145 4.145 4 C -0.141 4.141 5 C -0.097 4.097 6 C -0.093 4.093 7 H 0.090 0.910 8 C -0.129 4.129 9 C 0.096 3.904 10 N -0.633 5.633 11 C 0.719 3.281 12 O -0.588 6.588 13 N -0.742 5.742 14 C 0.149 3.851 15 C -0.021 4.021 16 C -0.521 4.521 17 H 0.076 0.924 18 C 0.068 3.932 19 N -0.899 5.899 20 Si 0.882 3.118 21 H -0.277 1.277 22 H -0.287 1.287 23 H -0.266 1.266 24 C 0.186 3.814 25 C -0.156 4.156 26 C -0.158 4.158 27 H 0.065 0.935 28 H 0.049 0.951 29 H 0.056 0.944 30 H 0.051 0.949 31 H 0.054 0.946 32 H 0.060 0.940 33 H 0.054 0.946 34 H 0.053 0.947 35 H 0.053 0.947 36 H 0.067 0.933 37 H 0.068 0.932 38 H 0.076 0.924 39 H 0.088 0.912 40 H 0.063 0.937 41 H 0.071 0.929 42 H 0.390 0.610 43 H 0.059 0.941 44 H 0.059 0.941 45 H 0.020 0.980 46 H 0.016 0.984 47 H 0.264 0.736 48 H 0.059 0.941 49 H 0.073 0.927 50 H 0.052 0.948 51 H 0.053 0.947 52 H 0.072 0.928 53 H 0.062 0.938 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 3.180 6.291 30.478 31.283 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 -0.207 4.207 2 C -0.070 4.070 3 C -0.202 4.202 4 C -0.198 4.198 5 C -0.135 4.135 6 C -0.112 4.112 7 H 0.108 0.892 8 C -0.167 4.167 9 C -0.028 4.028 10 N -0.373 5.373 11 C 0.421 3.579 12 O -0.467 6.467 13 N -0.396 5.396 14 C 0.027 3.973 15 C -0.059 4.059 16 C -0.559 4.559 17 H 0.094 0.906 18 C -0.133 4.133 19 N -0.537 5.537 20 Si 0.710 3.290 21 H -0.203 1.203 22 H -0.213 1.213 23 H -0.191 1.191 24 C 0.101 3.899 25 C -0.214 4.214 26 C -0.216 4.216 27 H 0.084 0.916 28 H 0.068 0.932 29 H 0.075 0.925 30 H 0.070 0.930 31 H 0.073 0.927 32 H 0.079 0.921 33 H 0.073 0.927 34 H 0.073 0.927 35 H 0.072 0.928 36 H 0.085 0.915 37 H 0.087 0.913 38 H 0.095 0.905 39 H 0.106 0.894 40 H 0.081 0.919 41 H 0.089 0.911 42 H 0.223 0.777 43 H 0.078 0.922 44 H 0.078 0.922 45 H 0.039 0.961 46 H 0.034 0.966 47 H 0.074 0.926 48 H 0.077 0.923 49 H 0.092 0.908 50 H 0.071 0.929 51 H 0.072 0.928 52 H 0.091 0.909 53 H 0.081 0.919 Dipole moment (debyes) X Y Z Total from point charges 3.901 5.846 29.915 30.729 hybrid contribution -1.422 0.625 0.129 1.559 sum 2.479 6.472 30.044 30.833 Atomic orbital electron populations 1.22211 0.94686 1.02193 1.01587 1.20552 0.95740 0.95590 0.95079 1.21988 1.01012 0.95539 1.01694 1.21879 1.00907 1.00218 0.96840 1.21770 1.01012 0.98582 0.92124 1.22424 0.95011 1.00545 0.93232 0.89210 1.23179 0.96350 1.02841 0.94296 1.22309 0.88015 0.97795 0.94650 1.47724 1.15764 1.65048 1.08721 1.15541 0.84299 0.79003 0.79075 1.90868 1.26093 1.50865 1.78848 1.45565 1.16003 1.66171 1.11886 1.21349 0.99896 0.98783 0.77310 1.19787 0.93089 0.96756 0.96248 1.20921 1.02267 1.40529 0.92197 0.90587 1.25002 0.98576 0.94982 0.94773 1.69908 1.33729 1.46953 1.03133 0.86749 0.83723 0.79680 0.78892 1.20255 1.21300 1.19117 1.20701 0.88547 0.95666 0.85008 1.22159 0.97120 0.99555 1.02588 1.22234 1.01318 0.95401 1.02615 0.91643 0.93193 0.92523 0.92957 0.92707 0.92120 0.92715 0.92749 0.92831 0.91456 0.91290 0.90507 0.89394 0.91855 0.91063 0.77717 0.92241 0.92236 0.96126 0.96550 0.92587 0.92253 0.90806 0.92904 0.92840 0.90896 0.91903 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 -0.15 -0.84 7.25 37.15 0.27 -0.57 16 2 C -0.07 -0.40 0.80 -154.51 -0.12 -0.53 16 3 C -0.15 -0.82 7.93 37.16 0.29 -0.53 16 4 C -0.14 -0.79 8.40 37.16 0.31 -0.48 16 5 C -0.10 -0.66 2.62 -26.73 -0.07 -0.73 16 6 C -0.09 -0.74 2.08 -88.78 -0.19 -0.92 16 7 H 0.09 0.68 5.52 -51.94 -0.29 0.39 16 8 C -0.13 -0.97 4.82 -24.47 -0.12 -1.09 16 9 C 0.10 0.95 6.58 -2.42 -0.02 0.94 16 10 N -0.63 -8.50 2.82 -161.31 -0.46 -8.96 16 11 C 0.72 12.80 8.07 -86.92 -0.70 12.10 16 12 O -0.59 -12.52 13.97 5.29 0.07 -12.44 16 13 N -0.74 -13.19 5.52 -65.23 -0.36 -13.55 16 14 C 0.15 3.19 5.61 -4.05 -0.02 3.16 16 15 C -0.02 -0.49 4.16 -27.89 -0.12 -0.61 16 16 C -0.52 -14.80 9.66 -34.44 -0.33 -15.14 16 17 H 0.08 2.34 7.99 -52.48 -0.42 1.92 16 18 C 0.07 1.98 5.47 -17.82 -0.10 1.88 16 19 N -0.90 -27.59 13.96 55.43 0.77 -26.82 16 20 Si 0.88 21.26 27.47 -169.99 -4.67 16.59 16 21 H -0.28 -6.54 7.11 56.52 0.40 -6.14 16 22 H -0.29 -6.88 7.11 56.52 0.40 -6.48 16 23 H -0.27 -6.07 6.54 56.52 0.37 -5.70 16 24 C 0.19 2.10 0.77 -130.84 -0.10 2.00 16 25 C -0.16 -1.84 8.40 37.16 0.31 -1.53 16 26 C -0.16 -1.85 7.34 37.15 0.27 -1.58 16 27 H 0.06 0.35 5.21 -51.93 -0.27 0.08 16 28 H 0.05 0.27 8.03 -51.93 -0.42 -0.15 16 29 H 0.06 0.33 7.51 -51.93 -0.39 -0.06 16 30 H 0.05 0.28 8.14 -51.93 -0.42 -0.14 16 31 H 0.05 0.32 8.14 -51.93 -0.42 -0.11 16 32 H 0.06 0.35 6.10 -51.93 -0.32 0.03 16 33 H 0.05 0.31 8.14 -51.93 -0.42 -0.11 16 34 H 0.05 0.30 8.14 -51.93 -0.42 -0.12 16 35 H 0.05 0.28 8.14 -51.93 -0.42 -0.14 16 36 H 0.07 0.47 7.11 -51.93 -0.37 0.10 16 37 H 0.07 0.51 6.84 -51.93 -0.36 0.15 16 38 H 0.08 0.60 7.54 -51.93 -0.39 0.21 16 39 H 0.09 0.51 5.71 -51.93 -0.30 0.21 16 40 H 0.06 0.59 8.14 -51.93 -0.42 0.16 16 41 H 0.07 0.69 7.29 -51.93 -0.38 0.31 16 42 H 0.39 5.95 6.95 -40.82 -0.28 5.66 16 43 H 0.06 1.34 8.14 -51.93 -0.42 0.92 16 44 H 0.06 1.34 8.14 -51.93 -0.42 0.92 16 45 H 0.02 0.47 7.20 -51.93 -0.37 0.10 16 46 H 0.02 0.37 7.57 -51.93 -0.39 -0.02 16 47 H 0.26 7.56 8.31 -40.82 -0.34 7.22 16 48 H 0.06 0.57 8.14 -51.93 -0.42 0.15 16 49 H 0.07 1.11 6.90 -51.93 -0.36 0.75 16 50 H 0.05 0.61 8.14 -51.93 -0.42 0.18 16 51 H 0.05 0.62 7.66 -51.93 -0.40 0.22 16 52 H 0.07 1.10 6.77 -51.93 -0.35 0.75 16 53 H 0.06 0.60 6.44 -51.93 -0.33 0.26 16 LS Contribution 388.53 15.07 5.86 5.86 Total: -1.00 -32.43 388.53 -8.98 -41.42 By element: Atomic # 1 Polarization: 11.31 SS G_CDS: -9.78 Total: 1.53 kcal Atomic # 6 Polarization: -3.19 SS G_CDS: -0.42 Total: -3.62 kcal Atomic # 7 Polarization: -49.29 SS G_CDS: -0.04 Total: -49.33 kcal Atomic # 8 Polarization: -12.52 SS G_CDS: 0.07 Total: -12.44 kcal Atomic # 14 Polarization: 21.26 SS G_CDS: -4.67 Total: 16.59 kcal Total LS contribution 5.86 Total: 5.86 kcal Total: -32.43 -8.98 -41.42 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. ZINC000413446008.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 -8.730 kcal (2) G-P(sol) polarization free energy of solvation -32.435 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -41.165 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.983 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -41.418 kcal (6) G-S(sol) free energy of system = (1) + (5) -50.148 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.60 seconds