Wall clock time and date at job start Sat Apr 11 2020 06:09:30 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 1.53004 * 1 3 3 C 1.52998 * 109.47396 * 2 1 4 4 N 1.46496 * 109.47095 * 180.02562 * 3 2 1 5 5 C 1.46504 * 119.99698 * 270.00126 * 4 3 2 6 6 C 1.53007 * 109.46888 * 277.57018 * 5 4 3 7 7 C 1.53001 * 109.46850 * 180.41794 * 6 5 4 8 8 C 1.53003 * 109.46953 * 300.41927 * 6 5 4 9 9 O 1.42901 * 109.46838 * 60.42042 * 6 5 4 10 10 C 1.34775 * 120.00340 * 90.00070 * 4 3 2 11 11 O 1.21342 * 120.00379 * 184.31880 * 10 4 3 12 12 C 1.49450 * 119.99752 * 4.31594 * 10 4 3 13 13 O 1.21356 * 120.00237 * 283.05851 * 12 10 4 14 14 N 1.34776 * 120.00276 * 103.05232 * 12 10 4 15 15 C 1.46929 * 120.62799 * 355.77769 * 14 12 10 16 16 C 1.53185 * 108.78131 * 126.40669 * 15 14 12 17 17 C 1.53041 * 109.31057 * 54.63277 * 16 15 14 18 18 C 1.53039 * 109.54071 * 298.63639 * 17 16 15 19 19 H 1.08997 * 109.52275 * 301.40067 * 18 17 16 20 20 C 1.50701 * 109.49816 * 181.31545 * 18 17 16 21 21 H 1.07993 * 120.00200 * 0.16587 * 20 18 17 22 22 C 1.37879 * 119.99860 * 180.43932 * 20 18 17 23 23 N 1.31515 * 119.99795 * 359.72032 * 22 20 18 24 24 Si 1.86800 * 120.00088 * 179.72528 * 22 20 18 25 25 H 1.48503 * 109.46872 * 89.99974 * 24 22 20 26 26 H 1.48497 * 109.46978 * 209.99611 * 24 22 20 27 27 H 1.48494 * 109.46853 * 329.99931 * 24 22 20 28 28 C 1.46923 * 120.63521 * 175.78963 * 14 12 10 29 29 H 1.09000 * 109.46698 * 299.99991 * 1 2 3 30 30 H 1.08998 * 109.47260 * 59.99748 * 1 2 3 31 31 H 1.09004 * 109.47522 * 180.02562 * 1 2 3 32 32 H 1.09000 * 109.46698 * 240.00009 * 2 1 3 33 33 H 1.09002 * 109.46789 * 120.00146 * 2 1 3 34 34 H 1.09004 * 109.46812 * 59.99670 * 3 2 1 35 35 H 1.08998 * 109.47121 * 300.00337 * 3 2 1 36 36 H 1.08992 * 109.47665 * 37.57090 * 5 4 3 37 37 H 1.08997 * 109.46950 * 157.57765 * 5 4 3 38 38 H 1.08997 * 109.47066 * 60.00449 * 7 6 5 39 39 H 1.09005 * 109.46845 * 180.02562 * 7 6 5 40 40 H 1.08998 * 109.47298 * 300.00152 * 7 6 5 41 41 H 1.08991 * 109.47063 * 68.23567 * 8 6 5 42 42 H 1.09006 * 109.46344 * 188.22968 * 8 6 5 43 43 H 1.08991 * 109.47443 * 308.22662 * 8 6 5 44 44 H 0.96696 * 114.00201 * 60.00231 * 9 6 5 45 45 H 1.09002 * 109.58349 * 246.19645 * 15 14 12 46 46 H 1.09006 * 109.58810 * 6.61788 * 15 14 12 47 47 H 1.08999 * 109.50407 * 174.58250 * 16 15 14 48 48 H 1.08996 * 109.50257 * 294.68564 * 16 15 14 49 49 H 1.08999 * 109.46342 * 178.61634 * 17 16 15 50 50 H 1.09005 * 109.46083 * 58.65880 * 17 16 15 51 51 H 0.97003 * 119.99613 * 180.02562 * 23 22 20 52 52 H 1.09005 * 109.58329 * 113.80494 * 28 14 12 53 53 H 1.08998 * 109.70195 * 353.45125 * 28 14 12 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 2.0401 1.4425 0.0000 4 7 3.5051 1.4424 -0.0006 5 6 4.2380 1.4421 1.2679 6 6 4.3287 2.8720 1.8047 7 6 5.1032 2.8732 3.1242 8 6 5.0543 3.7540 0.7866 9 8 3.0123 3.3826 2.0247 10 6 4.1785 1.4425 -1.1680 11 8 5.3893 1.3633 -1.1701 12 6 3.4339 1.5402 -2.4602 13 8 2.8595 0.5679 -2.9045 14 7 3.4002 2.7081 -3.1320 15 6 4.0117 3.9169 -2.5630 16 6 4.9913 4.5019 -3.5850 17 6 4.2625 4.7308 -4.9111 18 6 3.7450 3.3945 -5.4481 19 1 4.5809 2.7084 -5.5845 20 6 3.0556 3.6165 -6.7697 21 1 2.9950 4.6108 -7.1868 22 6 2.4974 2.5510 -7.4436 23 7 2.5714 1.3401 -6.9357 24 14 1.6362 2.8272 -9.0781 25 1 2.6181 2.6920 -10.1839 26 1 0.5590 1.8191 -9.2466 27 1 1.0471 4.1901 -9.1029 28 6 2.7512 2.7968 -4.4471 29 1 -0.3633 0.5138 0.8900 30 1 -0.3634 0.5139 -0.8899 31 1 -0.3634 -1.0277 0.0005 32 1 1.8933 -0.5138 -0.8900 33 1 1.8933 -0.5139 0.8900 34 1 1.6767 1.9563 0.8900 35 1 1.6768 1.9563 -0.8899 36 1 3.7147 0.8155 1.9899 37 1 5.2423 1.0501 1.1071 38 1 6.1073 2.4838 2.9565 39 1 5.1674 3.8918 3.5069 40 1 4.5863 2.2448 3.8495 41 1 4.4324 3.8717 -0.1006 42 1 5.2486 4.7322 1.2266 43 1 5.9989 3.2865 0.5088 44 1 2.4933 2.8714 2.6606 45 1 3.2353 4.6489 -2.3404 46 1 4.5473 3.6599 -1.6490 47 1 5.3798 5.4507 -3.2150 48 1 5.8158 3.8058 -3.7386 49 1 4.9511 5.1700 -5.6329 50 1 3.4231 5.4078 -4.7520 51 1 2.1790 0.5904 -7.4100 52 1 1.8720 3.4376 -4.3781 53 1 2.4532 1.8019 -4.7777 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 ZINC001327332858.mol2 53 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Sat Apr 11 2020 06:09:30 Heat of formation + Delta-G solvation = -129.823006 kcal Electronic energy + Delta-G solvation = -32941.424593 eV Core-core repulsion = 28812.832786 eV Total energy + Delta-G solvation = -4128.591807 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 0.62 seconds Orbital eigenvalues (eV) -40.82694 -39.01033 -37.82403 -36.75498 -35.99238 -33.41070 -33.34640 -32.13918 -31.80950 -29.92264 -27.74134 -27.61201 -26.42702 -25.15316 -24.94130 -22.44589 -21.86668 -21.65613 -20.64201 -19.44789 -18.37221 -17.56380 -17.16156 -16.55205 -16.21639 -15.90840 -15.52158 -15.17126 -14.73086 -14.61868 -14.53650 -14.15769 -13.87541 -13.74450 -13.51611 -13.28513 -12.88015 -12.77988 -12.68148 -12.60976 -12.36624 -12.25760 -12.18156 -12.12874 -11.99412 -11.80196 -11.64719 -11.41161 -11.12813 -11.03089 -10.98897 -10.86641 -10.69601 -10.50360 -10.47014 -10.28695 -10.20358 -9.93123 -9.23587 -9.15415 -8.84597 -8.68433 -8.45017 -7.88936 -6.01338 -4.10111 2.33408 2.52481 3.10378 3.30862 3.38009 3.40161 3.72007 3.95907 4.40560 4.44908 4.49772 4.62140 4.69354 4.86162 4.97923 5.10191 5.22048 5.27349 5.29030 5.34165 5.35217 5.45521 5.47799 5.55852 5.58959 5.61260 5.67969 5.74441 5.80525 5.83996 5.95125 5.95481 6.11865 6.15278 6.24771 6.25202 6.30550 6.43446 6.56948 6.64172 6.82021 6.95039 7.04373 7.13038 7.14272 7.38511 7.57786 7.82823 7.92287 7.97050 8.09252 8.33534 8.54123 8.93948 9.55609 11.04111 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.014892 B = 0.003626 C = 0.003170 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1879.699704 B = 7720.269745 C = 8831.145197 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.146 4.146 2 C -0.147 4.147 3 C 0.111 3.889 4 N -0.592 5.592 5 C 0.085 3.915 6 C 0.113 3.887 7 C -0.175 4.175 8 C -0.147 4.147 9 O -0.553 6.553 10 C 0.518 3.482 11 O -0.519 6.519 12 C 0.506 3.494 13 O -0.512 6.512 14 N -0.583 5.583 15 C 0.099 3.901 16 C -0.133 4.133 17 C -0.110 4.110 18 C 0.039 3.961 19 H 0.031 0.969 20 C -0.520 4.520 21 H 0.059 0.941 22 C 0.063 3.937 23 N -0.881 5.881 24 Si 0.893 3.107 25 H -0.281 1.281 26 H -0.286 1.286 27 H -0.274 1.274 28 C 0.112 3.888 29 H 0.051 0.949 30 H 0.059 0.941 31 H 0.056 0.944 32 H 0.079 0.921 33 H 0.059 0.941 34 H 0.089 0.911 35 H 0.078 0.922 36 H 0.079 0.921 37 H 0.099 0.901 38 H 0.069 0.931 39 H 0.067 0.933 40 H 0.058 0.942 41 H 0.069 0.931 42 H 0.061 0.939 43 H 0.076 0.924 44 H 0.371 0.629 45 H 0.067 0.933 46 H 0.076 0.924 47 H 0.061 0.939 48 H 0.064 0.936 49 H 0.053 0.947 50 H 0.050 0.950 51 H 0.264 0.736 52 H 0.048 0.952 53 H 0.125 0.875 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 0.193 2.633 21.805 21.964 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 -0.204 4.204 2 C -0.185 4.185 3 C -0.012 4.012 4 N -0.326 5.326 5 C -0.038 4.038 6 C 0.071 3.929 7 C -0.233 4.233 8 C -0.204 4.204 9 O -0.358 6.358 10 C 0.301 3.699 11 O -0.393 6.393 12 C 0.287 3.713 13 O -0.388 6.388 14 N -0.316 5.316 15 C -0.024 4.024 16 C -0.171 4.171 17 C -0.148 4.148 18 C 0.020 3.980 19 H 0.049 0.951 20 C -0.559 4.559 21 H 0.078 0.922 22 C -0.140 4.140 23 N -0.518 5.518 24 Si 0.721 3.279 25 H -0.207 1.207 26 H -0.212 1.212 27 H -0.199 1.199 28 C -0.008 4.008 29 H 0.071 0.929 30 H 0.078 0.922 31 H 0.075 0.925 32 H 0.098 0.902 33 H 0.078 0.922 34 H 0.107 0.893 35 H 0.097 0.903 36 H 0.097 0.903 37 H 0.117 0.883 38 H 0.088 0.912 39 H 0.086 0.914 40 H 0.077 0.923 41 H 0.088 0.912 42 H 0.080 0.920 43 H 0.095 0.905 44 H 0.218 0.782 45 H 0.085 0.915 46 H 0.094 0.906 47 H 0.080 0.920 48 H 0.082 0.918 49 H 0.072 0.928 50 H 0.069 0.931 51 H 0.074 0.926 52 H 0.067 0.933 53 H 0.143 0.857 Dipole moment (debyes) X Y Z Total from point charges 0.681 2.322 21.052 21.191 hybrid contribution -0.593 -0.375 -0.407 0.811 sum 0.087 1.947 20.645 20.737 Atomic orbital electron populations 1.21653 0.94945 1.01948 1.01862 1.22004 0.96483 0.96873 1.03165 1.21775 0.78082 0.97371 1.03942 1.47802 1.07336 1.72615 1.04806 1.22259 0.99431 0.96814 0.85274 1.21681 0.83364 0.93016 0.94816 1.22428 1.01215 1.02987 0.96667 1.21969 1.00376 0.99373 0.98666 1.86641 1.25891 1.57045 1.66269 1.20812 0.87980 0.75938 0.85122 1.90738 1.13239 1.48669 1.86683 1.19938 0.81421 0.84661 0.85288 1.90802 1.43622 1.35910 1.68438 1.48539 1.54627 1.07271 1.21212 1.21964 0.96443 0.87381 0.96640 1.21933 0.98310 0.99983 0.96912 1.21634 0.98723 1.00229 0.94217 1.18992 0.94860 0.91260 0.92933 0.95110 1.21069 1.36795 0.94142 1.03848 0.92236 1.25061 0.96016 0.95180 0.97779 1.69878 1.44518 0.98950 1.38494 0.86573 0.79342 0.77936 0.84040 1.20673 1.21176 1.19885 1.22452 0.95067 1.06002 0.77268 0.92948 0.92174 0.92485 0.90213 0.92215 0.89295 0.90319 0.90290 0.88305 0.91231 0.91365 0.92263 0.91207 0.91957 0.90470 0.78217 0.91467 0.90623 0.92011 0.91767 0.92781 0.93076 0.92599 0.93334 0.85729 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 12. 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 -1.49 9.91 37.16 0.37 -1.12 16 2 C -0.15 -1.72 6.26 -26.73 -0.17 -1.89 16 3 C 0.11 1.32 5.03 -4.04 -0.02 1.30 16 4 N -0.59 -7.81 2.12 -174.20 -0.37 -8.18 16 5 C 0.09 0.85 4.79 -4.04 -0.02 0.84 16 6 C 0.11 1.01 1.17 -90.61 -0.11 0.91 16 7 C -0.17 -1.16 8.81 37.16 0.33 -0.83 16 8 C -0.15 -1.62 7.68 37.16 0.29 -1.34 16 9 O -0.55 -4.85 11.15 -35.23 -0.39 -5.24 16 10 C 0.52 9.13 4.62 -11.59 -0.05 9.08 16 11 O -0.52 -10.06 15.64 5.50 0.09 -9.97 16 12 C 0.51 10.59 5.61 -11.59 -0.07 10.52 16 13 O -0.51 -12.31 15.53 5.49 0.09 -12.23 16 14 N -0.58 -12.01 2.97 -173.27 -0.52 -12.52 16 15 C 0.10 1.67 6.25 -3.71 -0.02 1.65 16 16 C -0.13 -2.29 6.08 -26.61 -0.16 -2.46 16 17 C -0.11 -2.22 5.11 -26.69 -0.14 -2.35 16 18 C 0.04 0.96 2.25 -91.65 -0.21 0.75 16 19 H 0.03 0.86 8.14 -51.93 -0.42 0.44 16 20 C -0.52 -13.98 8.57 -34.44 -0.30 -14.28 16 21 H 0.06 1.56 7.74 -52.49 -0.41 1.16 16 22 C 0.06 1.72 5.30 -17.82 -0.09 1.62 16 23 N -0.88 -25.52 11.38 55.43 0.63 -24.89 16 24 Si 0.89 21.12 29.54 -169.99 -5.02 16.10 16 25 H -0.28 -6.62 7.11 56.52 0.40 -6.22 16 26 H -0.29 -6.76 7.11 56.52 0.40 -6.36 16 27 H -0.27 -6.34 7.11 56.52 0.40 -5.93 16 28 C 0.11 2.67 5.38 -3.71 -0.02 2.65 16 29 H 0.05 0.42 8.14 -51.93 -0.42 0.00 16 30 H 0.06 0.69 8.14 -51.93 -0.42 0.27 16 31 H 0.06 0.55 8.14 -51.93 -0.42 0.13 16 32 H 0.08 1.22 7.13 -51.93 -0.37 0.85 16 33 H 0.06 0.60 8.14 -51.93 -0.42 0.17 16 34 H 0.09 0.81 6.16 -51.93 -0.32 0.49 16 35 H 0.08 1.12 6.79 -51.93 -0.35 0.77 16 36 H 0.08 0.58 8.12 -51.93 -0.42 0.16 16 37 H 0.10 1.11 7.16 -51.93 -0.37 0.74 16 38 H 0.07 0.45 8.14 -51.93 -0.42 0.03 16 39 H 0.07 0.46 8.14 -51.93 -0.42 0.04 16 40 H 0.06 0.30 8.14 -51.93 -0.42 -0.13 16 41 H 0.07 0.90 4.41 -51.93 -0.23 0.67 16 42 H 0.06 0.62 8.13 -51.93 -0.42 0.19 16 43 H 0.08 0.90 7.78 -51.93 -0.40 0.50 16 44 H 0.37 1.85 8.69 45.56 0.40 2.24 16 45 H 0.07 1.03 8.14 -51.93 -0.42 0.61 16 46 H 0.08 1.20 3.16 -51.93 -0.16 1.03 16 47 H 0.06 0.87 8.14 -51.93 -0.42 0.45 16 48 H 0.06 1.19 8.14 -51.93 -0.42 0.77 16 49 H 0.05 1.07 8.14 -51.93 -0.42 0.64 16 50 H 0.05 0.99 8.14 -51.93 -0.42 0.56 16 51 H 0.26 7.36 8.31 -40.82 -0.34 7.02 16 52 H 0.05 1.13 8.14 -51.93 -0.42 0.71 16 53 H 0.12 3.47 5.14 -51.93 -0.27 3.21 16 LS Contribution 405.20 15.07 6.11 6.11 Total: -1.00 -32.38 405.20 -8.16 -40.54 By element: Atomic # 1 Polarization: 13.61 SS G_CDS: -8.39 Total: 5.23 kcal Atomic # 6 Polarization: 5.44 SS G_CDS: -0.39 Total: 5.05 kcal Atomic # 7 Polarization: -45.34 SS G_CDS: -0.25 Total: -45.59 kcal Atomic # 8 Polarization: -27.22 SS G_CDS: -0.22 Total: -27.44 kcal Atomic # 14 Polarization: 21.12 SS G_CDS: -5.02 Total: 16.10 kcal Total LS contribution 6.11 Total: 6.11 kcal Total: -32.38 -8.16 -40.54 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. ZINC001327332858.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 -89.279 kcal (2) G-P(sol) polarization free energy of solvation -32.380 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -121.659 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.164 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -40.544 kcal (6) G-S(sol) free energy of system = (1) + (5) -129.823 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.62 seconds