Wall clock time and date at job start Sat Apr 11 2020 06:12:20 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 1.53001 * 109.46842 * 2 1 4 4 C 1.53005 * 109.47048 * 180.02562 * 3 2 1 5 5 H 1.09000 * 109.46646 * 304.99804 * 4 3 2 6 6 N 1.46495 * 109.47381 * 64.99518 * 4 3 2 7 7 C 1.34780 * 120.00195 * 275.00179 * 6 4 3 8 8 N 1.34774 * 120.00108 * 179.97438 * 7 6 4 9 9 O 1.21586 * 119.99834 * 0.02562 * 7 6 4 10 10 C 1.50696 * 109.46983 * 185.00223 * 4 3 2 11 11 O 1.21288 * 119.99520 * 239.99581 * 10 4 3 12 12 N 1.34768 * 120.00524 * 59.99682 * 10 4 3 13 13 C 1.46506 * 120.00072 * 179.97438 * 12 10 4 14 14 C 1.53009 * 109.46955 * 179.97438 * 13 12 10 15 15 C 1.53000 * 109.47023 * 180.02562 * 14 13 12 16 16 C 1.52996 * 109.47252 * 174.95171 * 15 14 13 17 17 H 1.09003 * 109.86657 * 306.25281 * 16 15 14 18 18 C 1.54321 * 109.88651 * 67.42600 * 16 15 14 19 19 C 1.55151 * 102.94009 * 141.61225 * 18 16 15 20 20 C 1.54910 * 101.58432 * 324.49706 * 19 18 16 21 21 N 1.47015 * 109.88280 * 185.23848 * 16 15 14 22 22 C 1.36946 * 125.64962 * 61.60165 * 21 16 15 23 23 H 1.07998 * 119.99893 * 14.68054 * 22 21 16 24 24 C 1.38805 * 120.00125 * 194.67763 * 22 21 16 25 25 N 1.31623 * 120.00086 * 359.97438 * 24 22 21 26 26 Si 1.86800 * 120.00197 * 180.02562 * 24 22 21 27 27 H 1.48494 * 109.47238 * 59.99866 * 26 24 22 28 28 H 1.48497 * 109.47171 * 180.02562 * 26 24 22 29 29 H 1.48505 * 109.46647 * 299.99832 * 26 24 22 30 30 H 1.09001 * 109.47067 * 59.99995 * 1 2 3 31 31 H 1.08999 * 109.46817 * 179.97438 * 1 2 3 32 32 H 1.08997 * 109.46774 * 300.00183 * 1 2 3 33 33 H 1.08994 * 109.47485 * 239.99981 * 2 1 3 34 34 H 1.09002 * 109.47154 * 119.99460 * 2 1 3 35 35 H 1.08997 * 109.47586 * 60.00314 * 3 2 1 36 36 H 1.09001 * 109.47293 * 299.99867 * 3 2 1 37 37 H 0.97003 * 120.00174 * 95.00223 * 6 4 3 38 38 H 0.97004 * 119.99730 * 0.02562 * 8 7 6 39 39 H 0.96998 * 120.00443 * 180.02562 * 8 7 6 40 40 H 0.97004 * 120.00270 * 359.97438 * 12 10 4 41 41 H 1.09004 * 109.47159 * 60.00264 * 13 12 10 42 42 H 1.08996 * 109.46839 * 299.99633 * 13 12 10 43 43 H 1.08998 * 109.46711 * 299.99851 * 14 13 12 44 44 H 1.09004 * 109.46866 * 60.00213 * 14 13 12 45 45 H 1.09004 * 109.46867 * 294.94795 * 15 14 13 46 46 H 1.09004 * 109.47147 * 54.94657 * 15 14 13 47 47 H 1.08999 * 110.72076 * 259.98271 * 18 16 15 48 48 H 1.09004 * 110.71559 * 23.24916 * 18 16 15 49 49 H 1.09007 * 111.00130 * 206.42754 * 19 18 16 50 50 H 1.08996 * 111.04092 * 82.59317 * 19 18 16 51 51 H 1.08998 * 110.36674 * 278.17303 * 20 19 18 52 52 H 1.09004 * 110.36233 * 155.84780 * 20 19 18 53 53 H 0.96998 * 120.00044 * 179.97438 * 25 24 22 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 2.0400 1.4425 0.0000 4 6 3.5700 1.4426 -0.0006 5 1 3.9336 0.8530 0.8410 6 7 4.0579 0.8590 -1.2526 7 6 4.1866 -0.4777 -1.3680 8 7 4.6350 -1.0146 -2.5200 9 8 3.8974 -1.1992 -0.4330 10 6 4.0723 2.8580 0.1232 11 8 4.7693 3.3325 -0.7486 12 7 3.7472 3.5964 1.2027 13 6 4.2360 4.9723 1.3233 14 6 3.7258 5.5820 2.6306 15 6 4.2358 7.0190 2.7563 16 6 3.6247 7.6703 3.9985 17 1 2.5388 7.5813 3.9672 18 6 4.1736 6.9913 5.2710 19 6 4.3485 8.1808 6.2516 20 6 4.7877 9.3139 5.2910 21 7 4.0087 9.0880 4.0600 22 6 3.6954 10.0410 3.1276 23 1 2.9326 9.8435 2.3891 24 6 4.3583 11.2605 3.1319 25 7 5.2876 11.5013 4.0324 26 14 3.9304 12.5606 1.8606 27 1 2.4984 12.9302 1.9932 28 1 4.7746 13.7627 2.0785 29 1 4.1788 12.0221 0.4991 30 1 -0.3633 0.5138 -0.8900 31 1 -0.3633 -1.0277 -0.0005 32 1 -0.3633 0.5139 0.8900 33 1 1.8934 -0.5138 -0.8899 34 1 1.8934 -0.5138 0.8900 35 1 1.6767 1.9564 0.8900 36 1 1.6766 1.9564 -0.8900 37 1 4.2883 1.4346 -1.9987 38 1 4.8654 -0.4390 -3.2660 39 1 4.7273 -1.9766 -2.6032 40 1 3.1894 3.2171 1.8998 41 1 3.8727 5.5620 0.4817 42 1 5.3260 4.9718 1.3232 43 1 2.6358 5.5824 2.6302 44 1 4.0888 4.9923 3.4725 45 1 5.3221 7.0124 2.8467 46 1 3.9483 7.5854 1.8704 47 1 3.4565 6.2702 5.6633 48 1 5.1323 6.5131 5.0699 49 1 5.1245 7.9697 6.9874 50 1 3.4059 8.4266 6.7407 51 1 5.8553 9.2423 5.0829 52 1 4.5481 10.2877 5.7183 53 1 5.7510 12.3534 4.0352 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 ZINC001713442678.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 06:12:20 Heat of formation + Delta-G solvation = -69.858531 kcal Electronic energy + Delta-G solvation = -29866.587756 eV Core-core repulsion = 25772.888955 eV Total energy + Delta-G solvation = -4093.698801 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.226 amu Computer time = 0.80 seconds Orbital eigenvalues (eV) -40.86289 -39.50263 -37.85579 -36.15838 -35.63860 -34.27671 -33.21746 -33.00744 -32.18932 -29.77169 -29.27601 -27.86763 -25.41266 -24.63397 -23.77451 -21.74029 -21.52358 -21.35430 -20.49894 -20.11844 -19.18319 -18.82922 -17.96196 -16.78105 -16.59744 -16.44020 -16.12998 -15.57905 -15.26624 -15.01897 -14.67871 -14.56110 -14.40534 -14.17934 -13.82260 -13.68132 -13.54491 -13.01049 -12.77491 -12.34867 -12.08022 -12.04094 -11.94017 -11.88565 -11.68802 -11.46576 -11.41180 -11.02430 -10.89436 -10.80811 -10.72666 -10.57741 -10.55880 -10.13369 -10.06716 -9.98291 -9.97901 -9.76068 -9.62026 -9.60924 -9.37979 -9.21871 -8.55413 -6.74987 -5.72504 -3.07599 2.31604 2.36201 2.85979 3.09144 3.40581 3.45330 3.46061 4.11001 4.29476 4.50336 4.55368 4.67375 4.84879 4.99052 5.00711 5.15474 5.25391 5.33655 5.36053 5.45468 5.53896 5.58234 5.59891 5.61563 5.72751 5.84205 5.85473 5.92845 5.94526 6.01085 6.06683 6.10885 6.18114 6.24023 6.30891 6.35644 6.36283 6.43316 6.56383 6.57844 6.71116 6.73761 6.96393 7.17851 7.24649 7.56734 7.59946 7.65407 7.82318 7.92687 8.27543 8.32004 9.22770 9.84441 10.53943 11.39832 Molecular weight = 340.23amu Principal moments of inertia in cm(-1) A = 0.015753 B = 0.001932 C = 0.001863 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1777.006058 B =14489.364243 C =15029.166977 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.154 4.154 2 C -0.115 4.115 3 C -0.127 4.127 4 C 0.146 3.854 5 H 0.116 0.884 6 N -0.727 5.727 7 C 0.709 3.291 8 N -0.867 5.867 9 O -0.590 6.590 10 C 0.508 3.492 11 O -0.538 6.538 12 N -0.721 5.721 13 C 0.118 3.882 14 C -0.127 4.127 15 C -0.122 4.122 16 C 0.162 3.838 17 H 0.031 0.969 18 C -0.124 4.124 19 C -0.151 4.151 20 C 0.173 3.827 21 N -0.596 5.596 22 C -0.227 4.227 23 H 0.073 0.927 24 C -0.005 4.005 25 N -0.918 5.918 26 Si 0.908 3.092 27 H -0.285 1.285 28 H -0.291 1.291 29 H -0.284 1.284 30 H 0.050 0.950 31 H 0.053 0.947 32 H 0.053 0.947 33 H 0.066 0.934 34 H 0.070 0.930 35 H 0.077 0.923 36 H 0.070 0.930 37 H 0.406 0.594 38 H 0.398 0.602 39 H 0.415 0.585 40 H 0.402 0.598 41 H 0.070 0.930 42 H 0.068 0.932 43 H 0.065 0.935 44 H 0.065 0.935 45 H 0.059 0.941 46 H 0.065 0.935 47 H 0.055 0.945 48 H 0.061 0.939 49 H 0.055 0.945 50 H 0.056 0.944 51 H 0.023 0.977 52 H 0.068 0.932 53 H 0.253 0.747 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -5.088 -24.316 -8.129 26.138 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 -0.211 4.211 2 C -0.152 4.152 3 C -0.166 4.166 4 C 0.037 3.963 5 H 0.133 0.867 6 N -0.384 5.384 7 C 0.407 3.593 8 N -0.435 5.435 9 O -0.468 6.468 10 C 0.293 3.707 11 O -0.415 6.415 12 N -0.372 5.372 13 C -0.005 4.005 14 C -0.166 4.166 15 C -0.162 4.162 16 C 0.055 3.945 17 H 0.048 0.952 18 C -0.162 4.162 19 C -0.189 4.189 20 C 0.048 3.952 21 N -0.320 5.320 22 C -0.355 4.355 23 H 0.091 0.909 24 C -0.202 4.202 25 N -0.565 5.565 26 Si 0.739 3.261 27 H -0.212 1.212 28 H -0.216 1.216 29 H -0.211 1.211 30 H 0.069 0.931 31 H 0.072 0.928 32 H 0.072 0.928 33 H 0.085 0.915 34 H 0.089 0.911 35 H 0.096 0.904 36 H 0.089 0.911 37 H 0.242 0.758 38 H 0.226 0.774 39 H 0.247 0.753 40 H 0.237 0.763 41 H 0.088 0.912 42 H 0.087 0.913 43 H 0.084 0.916 44 H 0.084 0.916 45 H 0.077 0.923 46 H 0.084 0.916 47 H 0.074 0.926 48 H 0.079 0.921 49 H 0.074 0.926 50 H 0.075 0.925 51 H 0.042 0.958 52 H 0.087 0.913 53 H 0.063 0.937 Dipole moment (debyes) X Y Z Total from point charges -4.785 -24.158 -7.904 25.864 hybrid contribution -0.054 0.759 -1.196 1.417 sum -4.839 -23.399 -9.100 25.568 Atomic orbital electron populations 1.21810 0.96223 1.01519 1.01545 1.21557 0.94915 0.95141 1.03601 1.22059 0.92398 0.98989 1.03203 1.20692 0.95128 0.91627 0.88885 0.86670 1.44749 1.71314 1.05567 1.16813 1.15817 0.77927 0.82119 0.83400 1.42960 1.73504 1.11806 1.15244 1.90984 1.57006 1.60112 1.38729 1.20555 0.80453 0.87497 0.82220 1.90714 1.37894 1.72680 1.40216 1.46038 1.53346 1.15128 1.22686 1.21565 0.99588 0.80198 0.99158 1.21846 1.01065 0.98204 0.95488 1.22030 1.00734 0.92206 1.01231 1.20925 0.96019 0.85773 0.91802 0.95168 1.22588 1.00009 0.97161 0.96458 1.23012 1.00274 0.97825 0.97818 1.21402 0.93948 0.95295 0.84553 1.44536 1.62986 1.02054 1.22457 1.18906 1.15104 0.93529 1.07995 0.90900 1.24900 0.97671 0.98713 0.98936 1.69929 1.27008 1.23788 1.35759 0.86259 0.77495 0.81119 0.81253 1.21172 1.21643 1.21106 0.93117 0.92827 0.92764 0.91508 0.91135 0.90405 0.91130 0.75752 0.77431 0.75285 0.76345 0.91194 0.91319 0.91648 0.91630 0.92259 0.91615 0.92638 0.92054 0.92578 0.92504 0.95850 0.91327 0.93689 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 15. 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 -1.11 9.91 37.16 0.37 -0.74 16 2 C -0.11 -0.96 4.54 -26.73 -0.12 -1.08 16 3 C -0.13 -0.95 4.83 -26.73 -0.13 -1.08 16 4 C 0.15 1.28 2.67 -69.08 -0.18 1.10 16 5 H 0.12 1.05 7.58 -51.93 -0.39 0.66 16 6 N -0.73 -6.17 4.91 -59.82 -0.29 -6.46 16 7 C 0.71 6.46 7.41 -86.92 -0.64 5.81 16 8 N -0.87 -4.55 8.88 27.63 0.25 -4.30 16 9 O -0.59 -7.29 14.31 5.29 0.08 -7.21 16 10 C 0.51 5.52 7.22 -10.99 -0.08 5.44 16 11 O -0.54 -7.73 15.84 5.55 0.09 -7.64 16 12 N -0.72 -6.94 5.42 -60.29 -0.33 -7.26 16 13 C 0.12 1.42 5.68 -4.03 -0.02 1.39 16 14 C -0.13 -1.55 5.10 -26.73 -0.14 -1.69 16 15 C -0.12 -2.08 4.71 -26.73 -0.13 -2.21 16 16 C 0.16 3.16 3.16 -66.96 -0.21 2.95 16 17 H 0.03 0.60 8.14 -51.93 -0.42 0.17 16 18 C -0.12 -2.07 5.71 -24.90 -0.14 -2.21 16 19 C -0.15 -2.80 7.08 -24.59 -0.17 -2.98 16 20 C 0.17 4.16 5.41 -2.53 -0.01 4.14 16 21 N -0.60 -14.78 3.13 -162.58 -0.51 -15.28 16 22 C -0.23 -6.18 9.71 -15.06 -0.15 -6.32 16 23 H 0.07 1.93 7.83 -52.49 -0.41 1.51 16 24 C -0.01 -0.15 5.47 -17.43 -0.10 -0.25 16 25 N -0.92 -26.82 10.58 55.49 0.59 -26.24 16 26 Si 0.91 21.98 29.55 -169.99 -5.02 16.96 16 27 H -0.29 -6.80 7.11 56.52 0.40 -6.40 16 28 H -0.29 -7.11 7.11 56.52 0.40 -6.71 16 29 H -0.28 -6.81 7.11 56.52 0.40 -6.41 16 30 H 0.05 0.35 8.14 -51.93 -0.42 -0.07 16 31 H 0.05 0.38 8.14 -51.93 -0.42 -0.04 16 32 H 0.05 0.36 8.14 -51.93 -0.42 -0.06 16 33 H 0.07 0.65 5.64 -51.93 -0.29 0.36 16 34 H 0.07 0.66 7.84 -51.93 -0.41 0.26 16 35 H 0.08 0.47 7.43 -51.93 -0.39 0.09 16 36 H 0.07 0.55 8.14 -51.93 -0.42 0.13 16 37 H 0.41 3.20 7.80 -40.82 -0.32 2.88 16 38 H 0.40 1.12 8.84 -40.82 -0.36 0.76 16 39 H 0.42 1.72 8.93 -40.82 -0.36 1.35 16 40 H 0.40 2.78 7.83 -40.82 -0.32 2.46 16 41 H 0.07 0.93 8.14 -51.93 -0.42 0.51 16 42 H 0.07 0.91 8.14 -51.93 -0.42 0.49 16 43 H 0.06 0.75 8.14 -51.93 -0.42 0.32 16 44 H 0.07 0.73 7.65 -51.93 -0.40 0.33 16 45 H 0.06 1.09 8.02 -51.93 -0.42 0.67 16 46 H 0.07 1.25 7.84 -51.93 -0.41 0.85 16 47 H 0.05 0.78 8.14 -51.93 -0.42 0.36 16 48 H 0.06 0.98 7.76 -51.93 -0.40 0.58 16 49 H 0.06 0.93 8.14 -51.93 -0.42 0.51 16 50 H 0.06 1.03 8.14 -51.93 -0.42 0.61 16 51 H 0.02 0.61 8.06 -51.93 -0.42 0.19 16 52 H 0.07 1.84 6.93 -51.93 -0.36 1.48 16 53 H 0.25 7.21 8.31 -40.82 -0.34 6.87 16 LS Contribution 416.40 15.07 6.28 6.28 Total: -1.00 -33.99 416.40 -10.18 -44.17 By element: Atomic # 1 Polarization: 14.17 SS G_CDS: -9.44 Total: 4.72 kcal Atomic # 6 Polarization: 4.13 SS G_CDS: -1.86 Total: 2.27 kcal Atomic # 7 Polarization: -59.25 SS G_CDS: -0.30 Total: -59.55 kcal Atomic # 8 Polarization: -15.02 SS G_CDS: 0.16 Total: -14.85 kcal Atomic # 14 Polarization: 21.98 SS G_CDS: -5.02 Total: 16.96 kcal Total LS contribution 6.28 Total: 6.28 kcal Total: -33.99 -10.18 -44.17 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. ZINC001713442678.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 -25.685 kcal (2) G-P(sol) polarization free energy of solvation -33.993 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -59.678 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.181 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -44.174 kcal (6) G-S(sol) free energy of system = (1) + (5) -69.859 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.80 seconds