Wall clock time and date at job start Sat Apr 11 2020 06:13:50 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 1.52999 * 1 3 3 N 1.46901 * 109.47139 * 2 1 4 4 C 1.46904 * 111.00125 * 293.96045 * 3 2 1 5 5 C 1.46896 * 111.00115 * 170.00476 * 3 2 1 6 6 C 1.52997 * 109.47114 * 190.00001 * 5 3 2 7 7 C 1.50706 * 109.47238 * 179.97438 * 6 5 3 8 8 O 1.21279 * 119.99507 * 0.02562 * 7 6 5 9 9 N 1.34774 * 120.00020 * 180.02562 * 7 6 5 10 10 C 1.46496 * 119.99544 * 180.02562 * 9 7 6 11 11 H 1.08997 * 109.48050 * 34.99853 * 10 9 7 12 12 C 1.53003 * 109.47378 * 274.99692 * 10 9 7 13 13 C 1.53010 * 109.47076 * 155.00017 * 10 9 7 14 14 C 1.53933 * 113.73180 * 276.72611 * 13 10 9 15 15 N 1.47956 * 86.17748 * 221.91791 * 14 13 10 16 16 C 1.46898 * 111.00087 * 137.58506 * 15 14 13 17 17 C 1.50698 * 109.47401 * 90.63869 * 16 15 14 18 18 O 1.21295 * 119.99575 * 0.02562 * 17 16 15 19 19 N 1.34771 * 120.00194 * 180.02562 * 17 16 15 20 20 C 1.37102 * 120.00014 * 180.02562 * 19 17 16 21 21 H 1.07998 * 120.00089 * 359.97438 * 20 19 17 22 22 C 1.38948 * 119.99745 * 180.02562 * 20 19 17 23 23 N 1.31410 * 120.00314 * 359.97438 * 22 20 19 24 24 Si 1.86810 * 119.99874 * 179.97438 * 22 20 19 25 25 H 1.48501 * 109.46762 * 59.99617 * 24 22 20 26 26 H 1.48497 * 109.47161 * 179.97438 * 24 22 20 27 27 H 1.48493 * 109.46691 * 299.99750 * 24 22 20 28 28 C 1.47954 * 90.76797 * 24.69196 * 15 14 13 29 29 H 1.09000 * 109.46857 * 299.99491 * 1 2 3 30 30 H 1.09000 * 109.47506 * 59.99470 * 1 2 3 31 31 H 1.08996 * 109.47142 * 180.02562 * 1 2 3 32 32 H 1.09000 * 109.46857 * 240.00509 * 2 1 3 33 33 H 1.08992 * 109.47665 * 120.00192 * 2 1 3 34 34 H 1.09001 * 109.46714 * 296.04462 * 4 3 2 35 35 H 1.09000 * 109.47175 * 56.03904 * 4 3 2 36 36 H 1.08997 * 109.47401 * 176.04867 * 4 3 2 37 37 H 1.09001 * 109.47271 * 70.00270 * 5 3 2 38 38 H 1.09004 * 109.47041 * 310.00116 * 5 3 2 39 39 H 1.09001 * 109.46832 * 59.99999 * 6 5 3 40 40 H 1.09000 * 109.47611 * 300.00296 * 6 5 3 41 41 H 0.96994 * 119.99756 * 0.02562 * 9 7 6 42 42 H 1.08992 * 109.47534 * 180.02562 * 12 10 9 43 43 H 1.09005 * 109.46941 * 300.00980 * 12 10 9 44 44 H 1.08997 * 109.46755 * 60.00147 * 12 10 9 45 45 H 1.09001 * 112.93115 * 48.43343 * 13 10 9 46 46 H 1.08999 * 113.75804 * 336.23805 * 14 13 10 47 47 H 1.09003 * 113.75753 * 107.60487 * 14 13 10 48 48 H 1.09004 * 109.47401 * 210.63849 * 16 15 14 49 49 H 1.09008 * 109.47233 * 330.63724 * 16 15 14 50 50 H 0.97007 * 120.00054 * 359.97438 * 19 17 16 51 51 H 0.97002 * 119.99854 * 179.97438 * 23 22 20 52 52 H 1.08999 * 113.76592 * 220.99493 * 28 15 14 53 53 H 1.08997 * 113.76130 * 89.62267 * 28 15 14 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 7 2.0197 1.3850 0.0000 4 6 1.6701 2.0670 -1.2533 5 6 3.4685 1.4312 0.2380 6 6 3.8998 2.8791 0.4790 7 6 5.3861 2.9265 0.7238 8 8 6.0363 1.9028 0.7067 9 7 5.9927 4.1062 0.9617 10 6 7.4375 4.1522 1.1991 11 1 7.9306 3.3968 0.5873 12 6 7.7206 3.8756 2.6771 13 6 7.9716 5.5372 0.8281 14 6 8.2646 5.7064 -0.6736 15 7 9.4954 6.4116 -0.2529 16 6 10.6427 6.0038 -1.0745 17 6 10.7589 6.9201 -2.2653 18 8 9.9643 7.8243 -2.4144 19 7 11.7457 6.7349 -3.1644 20 6 11.8517 7.5689 -4.2474 21 1 11.1442 8.3740 -4.3802 22 6 12.8687 7.3776 -5.1746 23 7 13.7292 6.3977 -5.0132 24 14 13.0127 8.5135 -6.6507 25 1 13.2107 9.9092 -6.1836 26 1 14.1722 8.1008 -7.4816 27 1 11.7700 8.4337 -7.4596 28 6 9.4881 5.6940 1.0410 29 1 -0.3633 0.5138 0.8900 30 1 -0.3634 0.5139 -0.8899 31 1 -0.3633 -1.0276 0.0005 32 1 1.8933 -0.5138 -0.8900 33 1 1.8934 -0.5138 0.8899 34 1 2.1768 1.5791 -2.0859 35 1 0.5918 2.0179 -1.4051 36 1 1.9823 3.1099 -1.1988 37 1 3.9925 1.0360 -0.6323 38 1 3.7122 0.8289 1.1133 39 1 3.3759 3.2743 1.3493 40 1 3.6561 3.4814 -0.3962 41 1 5.4725 4.9248 0.9757 42 1 8.7956 3.9102 2.8538 43 1 7.2275 4.6310 3.2890 44 1 7.3402 2.8889 2.9414 45 1 7.3823 6.3482 1.2561 46 1 8.4525 4.7667 -1.1929 47 1 7.5483 6.3442 -1.1916 48 1 11.5546 6.0629 -0.4803 49 1 10.4983 4.9791 -1.4173 50 1 12.3814 6.0120 -3.0449 51 1 14.4390 6.2639 -5.6608 52 1 9.7493 6.3218 1.8929 53 1 10.0339 4.7507 1.0231 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 ZINC001282736992.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 06:13:50 Heat of formation + Delta-G solvation = -38.308566 kcal Electronic energy + Delta-G solvation = -29306.144755 eV Core-core repulsion = 25213.814063 eV Total energy + Delta-G solvation = -4092.330692 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.226 amu Computer time = 0.85 seconds Orbital eigenvalues (eV) -40.58466 -39.63862 -38.12685 -37.71096 -35.42894 -33.85547 -32.88830 -31.57878 -31.15471 -29.81111 -29.23178 -27.08542 -26.22796 -25.55298 -24.30380 -23.39942 -21.75632 -21.09699 -20.61934 -19.56089 -19.14595 -17.87669 -17.44854 -16.71495 -16.32583 -16.07292 -15.82116 -15.41530 -15.24562 -14.88499 -14.78684 -14.63311 -14.36688 -14.05927 -13.76166 -13.66503 -13.48069 -13.19695 -12.97711 -12.64950 -12.54870 -12.54023 -12.32071 -12.26502 -12.20842 -11.87349 -11.71200 -11.58965 -11.36497 -11.27776 -11.24301 -11.04532 -10.93575 -10.67637 -10.64743 -10.42525 -10.18653 -9.99075 -9.46559 -9.30862 -8.76765 -8.69011 -8.14360 -7.93183 -6.38861 -3.79671 2.44283 2.83534 3.21581 3.26831 3.31295 3.58597 3.90957 3.96249 4.22544 4.32576 4.47140 4.53500 4.55831 4.69197 4.77592 4.82292 4.98053 5.02883 5.05022 5.10038 5.13540 5.16466 5.20984 5.22285 5.24622 5.39132 5.40894 5.44909 5.51363 5.53242 5.54411 5.60914 5.62341 5.66318 5.70565 5.76552 5.77958 5.82210 5.92434 6.02449 6.15430 6.30534 6.34992 6.60540 6.62164 6.63129 7.19315 7.28305 7.57296 8.02154 8.08802 8.65372 9.21187 9.57908 10.10548 10.78962 Molecular weight = 340.23amu Principal moments of inertia in cm(-1) A = 0.013047 B = 0.001811 C = 0.001657 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2145.503708 B =15455.620438 C =16896.570306 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.149 4.149 2 C 0.050 3.950 3 N -0.545 5.545 4 C 0.015 3.985 5 C 0.070 3.930 6 C -0.138 4.138 7 C 0.515 3.485 8 O -0.543 6.543 9 N -0.723 5.723 10 C 0.149 3.851 11 H 0.088 0.912 12 C -0.161 4.161 13 C -0.125 4.125 14 C 0.018 3.982 15 N -0.449 5.449 16 C 0.010 3.990 17 C 0.447 3.553 18 O -0.576 6.576 19 N -0.567 5.567 20 C -0.299 4.299 21 H 0.102 0.898 22 C 0.022 3.978 23 N -0.903 5.903 24 Si 0.930 3.070 25 H -0.274 1.274 26 H -0.285 1.285 27 H -0.274 1.274 28 C 0.010 3.990 29 H 0.063 0.937 30 H 0.055 0.945 31 H 0.058 0.942 32 H 0.034 0.966 33 H 0.075 0.925 34 H 0.027 0.973 35 H 0.071 0.929 36 H 0.070 0.930 37 H 0.043 0.957 38 H 0.082 0.918 39 H 0.101 0.899 40 H 0.094 0.906 41 H 0.401 0.599 42 H 0.068 0.932 43 H 0.057 0.943 44 H 0.059 0.941 45 H 0.104 0.896 46 H 0.067 0.933 47 H 0.090 0.910 48 H 0.087 0.913 49 H 0.057 0.943 50 H 0.391 0.609 51 H 0.271 0.729 52 H 0.091 0.909 53 H 0.070 0.930 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -21.181 -11.502 14.809 28.289 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 -0.078 4.078 3 N -0.270 5.270 4 C -0.133 4.133 5 C -0.058 4.058 6 C -0.179 4.179 7 C 0.301 3.699 8 O -0.421 6.421 9 N -0.374 5.374 10 C 0.045 3.955 11 H 0.106 0.894 12 C -0.219 4.219 13 C -0.144 4.144 14 C -0.111 4.111 15 N -0.171 5.171 16 C -0.122 4.122 17 C 0.232 3.768 18 O -0.460 6.460 19 N -0.204 5.204 20 C -0.429 4.429 21 H 0.120 0.880 22 C -0.180 4.180 23 N -0.545 5.545 24 Si 0.758 3.242 25 H -0.199 1.199 26 H -0.210 1.210 27 H -0.200 1.200 28 C -0.120 4.120 29 H 0.082 0.918 30 H 0.074 0.926 31 H 0.077 0.923 32 H 0.052 0.948 33 H 0.093 0.907 34 H 0.046 0.954 35 H 0.090 0.910 36 H 0.089 0.911 37 H 0.062 0.938 38 H 0.100 0.900 39 H 0.120 0.880 40 H 0.112 0.888 41 H 0.236 0.764 42 H 0.086 0.914 43 H 0.077 0.923 44 H 0.078 0.922 45 H 0.122 0.878 46 H 0.085 0.915 47 H 0.108 0.892 48 H 0.106 0.894 49 H 0.075 0.925 50 H 0.224 0.776 51 H 0.081 0.919 52 H 0.109 0.891 53 H 0.088 0.912 Dipole moment (debyes) X Y Z Total from point charges -21.254 -10.723 14.914 28.091 hybrid contribution 0.904 -0.782 -1.486 1.907 sum -20.350 -11.505 13.428 26.959 Atomic orbital electron populations 1.21807 0.94751 1.01604 1.02498 1.22082 0.96123 0.88598 1.01010 1.62016 1.13792 1.16185 1.34973 1.22518 1.01604 0.99416 0.89744 1.21807 0.86607 0.95426 1.01947 1.21640 0.92172 0.99398 1.04649 1.20628 0.90010 0.83427 0.75795 1.90711 1.66840 1.33511 1.50993 1.46080 1.09172 1.09420 1.72776 1.21052 0.80403 0.97197 0.96888 0.89413 1.22134 1.02275 1.01998 0.95498 1.23321 0.97130 0.96417 0.97564 1.23981 0.94497 0.97739 0.94899 1.68372 1.01698 1.45390 1.01660 1.22482 0.95936 0.97596 0.96213 1.19693 0.84409 0.87816 0.84922 1.90514 1.43803 1.34611 1.77037 1.41873 1.26813 1.30085 1.21673 1.19647 1.12763 1.10829 0.99612 0.88039 1.25248 0.95752 0.97507 0.99453 1.69605 1.16754 1.30688 1.37418 0.85924 0.77676 0.80046 0.80597 1.19907 1.20991 1.19966 1.23960 0.94306 0.98121 0.95601 0.91821 0.92622 0.92280 0.94792 0.90684 0.95447 0.91036 0.91092 0.93844 0.89995 0.88035 0.88765 0.76443 0.91354 0.92342 0.92231 0.87789 0.91476 0.89163 0.89427 0.92486 0.77561 0.91877 0.89091 0.91201 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 -0.82 9.84 37.16 0.37 -0.45 16 2 C 0.05 0.34 5.68 -3.82 -0.02 0.31 16 3 N -0.55 -4.10 4.76 -242.92 -1.16 -5.26 16 4 C 0.02 0.10 9.13 60.07 0.55 0.65 16 5 C 0.07 0.59 4.25 -3.83 -0.02 0.58 16 6 C -0.14 -1.00 5.62 -27.88 -0.16 -1.15 16 7 C 0.52 5.14 7.79 -10.98 -0.09 5.06 16 8 O -0.54 -7.59 15.64 5.56 0.09 -7.50 16 9 N -0.72 -6.08 5.08 -53.80 -0.27 -6.35 16 10 C 0.15 1.44 2.41 -67.93 -0.16 1.27 16 11 H 0.09 1.05 7.37 -51.93 -0.38 0.67 16 12 C -0.16 -1.38 9.29 37.16 0.35 -1.03 16 13 C -0.12 -1.29 3.49 -89.68 -0.31 -1.61 16 14 C 0.02 0.25 7.51 -2.77 -0.02 0.23 16 15 N -0.45 -7.38 5.65 -239.78 -1.35 -8.73 16 16 C 0.01 0.18 5.28 -4.98 -0.03 0.15 16 17 C 0.45 10.85 7.83 -10.99 -0.09 10.77 16 18 O -0.58 -16.12 16.01 5.54 0.09 -16.03 16 19 N -0.57 -14.71 5.29 -10.96 -0.06 -14.77 16 20 C -0.30 -8.49 9.68 -14.93 -0.14 -8.64 16 21 H 0.10 3.02 7.16 -52.49 -0.38 2.64 16 22 C 0.02 0.59 5.50 -17.47 -0.10 0.50 16 23 N -0.90 -24.91 13.05 55.50 0.72 -24.18 16 24 Si 0.93 21.34 29.55 -169.99 -5.02 16.32 16 25 H -0.27 -6.24 7.11 56.52 0.40 -5.83 16 26 H -0.28 -6.36 7.11 56.52 0.40 -5.95 16 27 H -0.27 -6.24 7.11 56.52 0.40 -5.84 16 28 C 0.01 0.11 6.57 -2.77 -0.02 0.10 16 29 H 0.06 0.37 8.14 -51.93 -0.42 -0.05 16 30 H 0.05 0.30 6.47 -51.93 -0.34 -0.04 16 31 H 0.06 0.27 8.14 -51.93 -0.42 -0.15 16 32 H 0.03 0.24 8.12 -51.93 -0.42 -0.18 16 33 H 0.07 0.49 7.93 -51.93 -0.41 0.08 16 34 H 0.03 0.19 8.14 -51.93 -0.42 -0.23 16 35 H 0.07 0.41 6.30 -51.93 -0.33 0.08 16 36 H 0.07 0.42 6.47 -51.93 -0.34 0.08 16 37 H 0.04 0.43 8.08 -51.93 -0.42 0.01 16 38 H 0.08 0.75 7.89 -51.93 -0.41 0.34 16 39 H 0.10 0.60 8.14 -51.93 -0.42 0.18 16 40 H 0.09 0.58 6.55 -51.93 -0.34 0.24 16 41 H 0.40 2.41 8.60 -40.82 -0.35 2.06 16 42 H 0.07 0.54 7.43 -51.93 -0.39 0.16 16 43 H 0.06 0.44 8.14 -51.93 -0.42 0.02 16 44 H 0.06 0.59 8.14 -51.93 -0.42 0.16 16 45 H 0.10 0.98 8.14 -51.93 -0.42 0.56 16 46 H 0.07 0.96 7.29 -51.93 -0.38 0.58 16 47 H 0.09 1.38 8.14 -51.93 -0.42 0.96 16 48 H 0.09 1.44 8.08 -51.93 -0.42 1.02 16 49 H 0.06 0.94 7.38 -51.92 -0.38 0.56 16 50 H 0.39 9.69 7.90 -40.82 -0.32 9.37 16 51 H 0.27 7.10 8.31 -40.82 -0.34 6.76 16 52 H 0.09 0.97 8.14 -51.93 -0.42 0.54 16 53 H 0.07 0.74 7.85 -51.93 -0.41 0.34 16 LS Contribution 424.68 15.07 6.40 6.40 Total: -1.00 -34.46 424.68 -9.81 -44.27 By element: Atomic # 1 Polarization: 18.46 SS G_CDS: -9.35 Total: 9.12 kcal Atomic # 6 Polarization: 6.62 SS G_CDS: 0.11 Total: 6.73 kcal Atomic # 7 Polarization: -57.17 SS G_CDS: -2.12 Total: -59.29 kcal Atomic # 8 Polarization: -23.71 SS G_CDS: 0.18 Total: -23.53 kcal Atomic # 14 Polarization: 21.34 SS G_CDS: -5.02 Total: 16.32 kcal Total LS contribution 6.40 Total: 6.40 kcal Total: -34.46 -9.81 -44.27 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. ZINC001282736992.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 5.959 kcal (2) G-P(sol) polarization free energy of solvation -34.462 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -28.503 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.806 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -44.268 kcal (6) G-S(sol) free energy of system = (1) + (5) -38.309 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.85 seconds