Wall clock time and date at job start Tue Mar 31 2020 23:56:29 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 O 1.42903 * 1 3 3 C 1.42899 * 114.00090 * 2 1 4 4 C 1.52996 * 109.47166 * 179.97438 * 3 2 1 5 5 C 1.53005 * 109.47471 * 184.39482 * 4 3 2 6 6 N 1.46505 * 109.45808 * 303.08209 * 5 4 3 7 7 C 1.34776 * 119.99843 * 303.01610 * 6 5 4 8 8 O 1.21275 * 119.99816 * 355.03164 * 7 6 5 9 9 C 1.50700 * 119.99726 * 175.03209 * 7 6 5 10 10 H 1.09003 * 110.67182 * 306.50860 * 9 7 6 11 11 C 1.54991 * 110.62040 * 69.47081 * 9 7 6 12 12 C 1.54812 * 102.09283 * 155.52239 * 11 9 7 13 13 H 1.08995 * 110.59669 * 97.85406 * 12 11 9 14 14 C 1.52997 * 110.49052 * 220.44428 * 12 11 9 15 15 C 1.54105 * 104.18784 * 339.12209 * 12 11 9 16 16 O 1.43749 * 107.29312 * 357.97052 * 15 12 11 17 17 C 1.53041 * 109.44536 * 63.04253 * 5 4 3 18 18 C 1.53185 * 109.31232 * 181.37984 * 17 5 4 19 19 N 1.46926 * 108.77901 * 305.36745 * 18 17 5 20 20 C 1.36938 * 120.63282 * 233.58782 * 19 18 17 21 21 H 1.07998 * 119.99959 * 31.79521 * 20 19 18 22 22 C 1.38815 * 119.99967 * 211.79108 * 20 19 18 23 23 N 1.31617 * 119.99660 * 10.84068 * 22 20 19 24 24 Si 1.86795 * 119.99942 * 190.83559 * 22 20 19 25 25 H 1.48502 * 109.47309 * 0.02562 * 24 22 20 26 26 H 1.48503 * 109.46745 * 120.00284 * 24 22 20 27 27 H 1.48498 * 109.47488 * 239.99947 * 24 22 20 28 28 C 1.46927 * 118.73489 * 53.60452 * 19 18 17 29 29 C 1.53035 * 109.46250 * 183.10655 * 5 4 3 30 30 H 1.09003 * 109.46738 * 59.99642 * 1 2 3 31 31 H 1.08999 * 109.46971 * 179.97438 * 1 2 3 32 32 H 1.08995 * 109.46967 * 300.00300 * 1 2 3 33 33 H 1.09003 * 109.47009 * 59.99675 * 3 2 1 34 34 H 1.09000 * 109.47116 * 299.99803 * 3 2 1 35 35 H 1.09005 * 109.47251 * 64.39706 * 4 3 2 36 36 H 1.08998 * 109.47444 * 304.39724 * 4 3 2 37 37 H 0.97004 * 119.99767 * 123.01759 * 6 5 4 38 38 H 1.09009 * 110.90390 * 37.33074 * 11 9 7 39 39 H 1.08997 * 110.90905 * 273.72342 * 11 9 7 40 40 H 1.08997 * 109.47050 * 176.21597 * 14 12 11 41 41 H 1.09005 * 109.46771 * 56.22398 * 14 12 11 42 42 H 1.08994 * 109.47543 * 296.22471 * 14 12 11 43 43 H 1.09002 * 109.87678 * 117.38886 * 15 12 11 44 44 H 1.08994 * 109.87802 * 238.54343 * 15 12 11 45 45 H 1.09004 * 109.50200 * 301.33588 * 17 5 4 46 46 H 1.09008 * 109.49601 * 61.42989 * 17 5 4 47 47 H 1.09003 * 109.59035 * 185.57954 * 18 17 5 48 48 H 1.09004 * 109.58754 * 65.15828 * 18 17 5 49 49 H 0.97005 * 119.99814 * 179.97438 * 23 22 20 50 50 H 1.09007 * 109.58415 * 186.60378 * 28 19 18 51 51 H 1.09004 * 109.70156 * 66.25639 * 28 19 18 52 52 H 1.09004 * 109.49861 * 298.58037 * 29 5 4 53 53 H 1.09002 * 109.49762 * 58.64582 * 29 5 4 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 1.4290 0.0000 0.0000 3 6 2.0103 1.3054 0.0000 4 6 3.5355 1.1846 0.0006 5 6 4.1575 2.5781 0.1112 6 7 3.6745 3.4168 -0.9887 7 6 3.8567 3.0248 -2.2652 8 8 4.4986 2.0245 -2.5066 9 6 3.2629 3.8295 -3.3926 10 1 2.1939 3.9767 -3.2387 11 6 3.9873 5.1927 -3.5308 12 6 3.7256 5.5501 -5.0142 13 1 2.8826 6.2356 -5.1004 14 6 4.9776 6.1607 -5.6469 15 6 3.3916 4.1986 -5.6751 16 8 3.5101 3.1863 -4.6614 17 6 3.7586 3.2096 1.4470 18 6 4.3544 4.6178 1.5396 19 7 5.8049 4.5330 1.3214 20 6 6.6795 5.0679 2.2293 21 1 6.4243 5.0870 3.2785 22 6 7.8942 5.5856 1.8009 23 7 8.1189 5.7595 0.5158 24 14 9.2097 6.0356 3.0485 25 1 8.7131 5.7461 4.4177 26 1 10.4338 5.2365 2.7870 27 1 9.5282 7.4814 2.9324 28 6 6.2992 3.8636 0.1105 29 6 5.6816 2.4638 0.0339 30 1 -0.3633 0.5139 -0.8900 31 1 -0.3633 -1.0277 -0.0005 32 1 -0.3633 0.5139 0.8899 33 1 1.6886 1.8464 0.8900 34 1 1.6887 1.8463 -0.8900 35 1 3.8630 0.7130 -0.9259 36 1 3.8515 0.5774 0.8488 37 1 3.2236 4.2543 -0.7981 38 1 5.0551 5.0869 -3.3388 39 1 3.5460 5.9367 -2.8677 40 1 4.7970 6.3437 -6.7061 41 1 5.8144 5.4713 -5.5348 42 1 5.2134 7.1020 -5.1506 43 1 2.3730 4.2173 -6.0628 44 1 4.0945 3.9977 -6.4835 45 1 2.6721 3.2693 1.5112 46 1 4.1390 2.5991 2.2660 47 1 4.1573 5.0338 2.5276 48 1 3.9068 5.2549 0.7767 49 1 8.9676 6.1216 0.2165 50 1 7.3852 3.7819 0.1556 51 1 6.0123 4.4383 -0.7702 52 1 6.0439 1.8603 0.8662 53 1 5.9638 1.9921 -0.9074 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 ZINC001151216337.mol2 53 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Tue Mar 31 2020 23:56:29 Heat of formation + Delta-G solvation = -108.658873 kcal Electronic energy + Delta-G solvation = -32668.994466 eV Core-core repulsion = 28541.320405 eV Total energy + Delta-G solvation = -4127.674061 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 1.26 seconds Orbital eigenvalues (eV) -40.58454 -39.32552 -37.70572 -37.06107 -34.53765 -33.59070 -32.31573 -31.50461 -30.21504 -29.78816 -28.77923 -26.53536 -26.40091 -24.89895 -23.88428 -23.13311 -22.07482 -20.90212 -20.45936 -20.09214 -18.67060 -17.46506 -16.95410 -16.68159 -16.29496 -15.94258 -15.30102 -15.13422 -14.89962 -14.86265 -14.69203 -14.19951 -13.87714 -13.70467 -13.56370 -13.42362 -13.11455 -13.01276 -12.76719 -12.57630 -12.56045 -12.30162 -11.76558 -11.61773 -11.49196 -11.42407 -11.25005 -11.10306 -11.04395 -10.98159 -10.85843 -10.84819 -10.72610 -10.34741 -10.25181 -9.99694 -9.83465 -9.74295 -9.63161 -9.43399 -8.97599 -8.58657 -8.47948 -6.61734 -5.78980 -3.27666 2.89553 3.12417 3.35738 3.43801 3.45208 3.80440 4.06207 4.37052 4.47584 4.62393 4.73555 4.93819 4.98268 5.07799 5.10984 5.18736 5.24985 5.31656 5.34640 5.37057 5.39013 5.46471 5.50795 5.51129 5.55571 5.55960 5.63145 5.64521 5.78165 5.79733 5.91648 6.00666 6.00784 6.13535 6.16497 6.19262 6.36640 6.41230 6.52975 6.63994 6.68468 6.72704 6.83864 6.90745 7.08045 7.21153 7.42789 7.73194 7.79372 7.87747 8.47206 8.57746 9.21871 9.83100 10.41135 11.28402 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.008051 B = 0.004686 C = 0.003185 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 3476.850165 B = 5973.745561 C = 8790.190832 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.033 3.967 2 O -0.393 6.393 3 C 0.067 3.933 4 C -0.131 4.131 5 C 0.197 3.803 6 N -0.710 5.710 7 C 0.522 3.478 8 O -0.514 6.514 9 C 0.059 3.941 10 H 0.088 0.912 11 C -0.139 4.139 12 C -0.125 4.125 13 H 0.083 0.917 14 C -0.144 4.144 15 C 0.048 3.952 16 O -0.347 6.347 17 C -0.141 4.141 18 C 0.147 3.853 19 N -0.590 5.590 20 C -0.254 4.254 21 H 0.063 0.937 22 C 0.007 3.993 23 N -0.901 5.901 24 Si 0.902 3.098 25 H -0.278 1.278 26 H -0.289 1.289 27 H -0.290 1.290 28 C 0.181 3.819 29 C -0.151 4.151 30 H 0.037 0.963 31 H 0.082 0.918 32 H 0.038 0.962 33 H 0.049 0.951 34 H 0.042 0.958 35 H 0.090 0.910 36 H 0.075 0.925 37 H 0.397 0.603 38 H 0.091 0.909 39 H 0.087 0.913 40 H 0.056 0.944 41 H 0.062 0.938 42 H 0.061 0.939 43 H 0.058 0.942 44 H 0.087 0.913 45 H 0.056 0.944 46 H 0.077 0.923 47 H 0.056 0.944 48 H 0.013 0.987 49 H 0.253 0.747 50 H 0.084 0.916 51 H 0.017 0.983 52 H 0.060 0.940 53 H 0.072 0.928 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -15.230 -1.941 -7.862 17.249 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 -0.064 4.064 2 O -0.312 6.312 3 C -0.009 4.009 4 C -0.169 4.169 5 C 0.112 3.888 6 N -0.364 5.364 7 C 0.306 3.694 8 O -0.389 6.389 9 C -0.002 4.002 10 H 0.106 0.894 11 C -0.177 4.177 12 C -0.143 4.143 13 H 0.102 0.898 14 C -0.202 4.202 15 C -0.029 4.029 16 O -0.265 6.265 17 C -0.180 4.180 18 C 0.020 3.980 19 N -0.313 5.313 20 C -0.384 4.384 21 H 0.081 0.919 22 C -0.192 4.192 23 N -0.546 5.546 24 Si 0.732 3.268 25 H -0.203 1.203 26 H -0.216 1.216 27 H -0.217 1.217 28 C 0.055 3.945 29 C -0.191 4.191 30 H 0.056 0.944 31 H 0.101 0.899 32 H 0.057 0.943 33 H 0.067 0.933 34 H 0.061 0.939 35 H 0.108 0.892 36 H 0.094 0.906 37 H 0.232 0.768 38 H 0.110 0.890 39 H 0.106 0.894 40 H 0.075 0.925 41 H 0.081 0.919 42 H 0.080 0.920 43 H 0.076 0.924 44 H 0.105 0.895 45 H 0.075 0.925 46 H 0.095 0.905 47 H 0.074 0.926 48 H 0.031 0.969 49 H 0.063 0.937 50 H 0.102 0.898 51 H 0.035 0.965 52 H 0.079 0.921 53 H 0.091 0.909 Dipole moment (debyes) X Y Z Total from point charges -14.443 -3.000 -8.145 16.851 hybrid contribution 0.138 1.244 0.648 1.409 sum -14.305 -1.756 -7.497 16.246 Atomic orbital electron populations 1.22689 0.81679 1.02361 0.99673 1.87888 1.19170 1.28739 1.95360 1.22591 0.94705 0.83992 0.99655 1.21987 0.92373 0.97799 1.04727 1.20198 0.95233 0.87980 0.85434 1.46004 1.60507 1.24942 1.04927 1.19942 0.80624 0.85491 0.83295 1.90660 1.38477 1.26030 1.83728 1.22996 0.99300 0.92199 0.85755 0.89443 1.23213 1.03090 0.95128 0.96308 1.22523 0.99574 0.97311 0.94938 0.89815 1.21828 0.96859 1.01337 1.00128 1.23336 1.00904 0.86919 0.91777 1.89011 1.92262 1.31421 1.13803 1.22422 0.99229 1.00558 0.95810 1.20864 0.86570 0.91973 0.98614 1.44022 0.99046 1.64450 1.23759 1.19190 0.97919 1.32800 0.88505 0.91895 1.25152 0.99860 0.98400 0.95821 1.69990 1.23923 1.47837 1.12810 0.86231 0.81944 0.77738 0.80886 1.20261 1.21582 1.21714 1.20667 0.99363 0.86812 0.87625 1.22605 0.92560 1.02014 1.01915 0.94417 0.89949 0.94297 0.93258 0.93927 0.89190 0.90591 0.76815 0.89025 0.89391 0.92491 0.91883 0.91984 0.92418 0.89495 0.92513 0.90474 0.92588 0.96904 0.93712 0.89776 0.96467 0.92117 0.90947 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 16. 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 0.34 11.01 101.05 1.11 1.45 16 2 O -0.39 -5.67 10.70 -35.23 -0.38 -6.04 16 3 C 0.07 0.92 5.50 37.16 0.20 1.12 16 4 C -0.13 -2.07 4.32 -26.73 -0.12 -2.18 16 5 C 0.20 3.23 0.35 -131.77 -0.05 3.18 16 6 N -0.71 -10.62 3.36 -47.57 -0.16 -10.78 16 7 C 0.52 8.55 6.37 -10.99 -0.07 8.48 16 8 O -0.51 -10.44 12.85 -13.48 -0.17 -10.61 16 9 C 0.06 0.78 3.77 -26.83 -0.10 0.68 16 10 H 0.09 0.93 8.14 -51.93 -0.42 0.51 16 11 C -0.14 -1.70 6.13 -24.72 -0.15 -1.85 16 12 C -0.12 -1.24 3.65 -89.09 -0.32 -1.57 16 13 H 0.08 0.68 8.14 -51.93 -0.42 0.25 16 14 C -0.14 -1.41 8.92 37.16 0.33 -1.08 16 15 C 0.05 0.52 7.37 37.73 0.28 0.80 16 16 O -0.35 -5.26 10.80 -54.27 -0.59 -5.84 16 17 C -0.14 -2.20 4.72 -26.61 -0.13 -2.33 16 18 C 0.15 2.76 6.24 -3.71 -0.02 2.74 16 19 N -0.59 -13.98 2.98 -172.32 -0.51 -14.50 16 20 C -0.25 -6.75 9.58 -15.06 -0.14 -6.90 16 21 H 0.06 1.65 7.85 -52.49 -0.41 1.24 16 22 C 0.01 0.18 5.04 -17.43 -0.09 0.09 16 23 N -0.90 -25.66 11.09 55.49 0.62 -25.04 16 24 Si 0.90 21.42 29.57 -169.99 -5.03 16.39 16 25 H -0.28 -6.43 7.11 56.52 0.40 -6.03 16 26 H -0.29 -6.96 7.11 56.52 0.40 -6.55 16 27 H -0.29 -6.94 7.11 56.52 0.40 -6.54 16 28 C 0.18 4.26 4.99 -3.71 -0.02 4.24 16 29 C -0.15 -3.03 4.71 -26.62 -0.13 -3.16 16 30 H 0.04 0.35 8.14 -51.93 -0.42 -0.07 16 31 H 0.08 0.71 8.14 -51.93 -0.42 0.29 16 32 H 0.04 0.35 8.14 -51.93 -0.42 -0.07 16 33 H 0.05 0.61 6.27 -51.93 -0.33 0.29 16 34 H 0.04 0.58 7.46 -51.93 -0.39 0.19 16 35 H 0.09 1.65 6.22 -51.93 -0.32 1.33 16 36 H 0.08 1.19 8.14 -51.93 -0.42 0.77 16 37 H 0.40 5.17 7.18 -40.82 -0.29 4.88 16 38 H 0.09 1.38 7.77 -51.92 -0.40 0.98 16 39 H 0.09 0.93 8.14 -51.93 -0.42 0.50 16 40 H 0.06 0.46 8.14 -51.93 -0.42 0.03 16 41 H 0.06 0.71 8.13 -51.93 -0.42 0.28 16 42 H 0.06 0.60 8.14 -51.93 -0.42 0.18 16 43 H 0.06 0.52 8.14 -51.93 -0.42 0.09 16 44 H 0.09 0.89 7.69 -51.93 -0.40 0.49 16 45 H 0.06 0.73 6.35 -51.93 -0.33 0.40 16 46 H 0.08 1.27 8.14 -51.92 -0.42 0.85 16 47 H 0.06 1.05 7.93 -51.93 -0.41 0.64 16 48 H 0.01 0.24 6.88 -51.93 -0.36 -0.12 16 49 H 0.25 7.01 8.31 -40.82 -0.34 6.67 16 50 H 0.08 2.30 6.14 -51.93 -0.32 1.98 16 51 H 0.02 0.43 7.74 -51.93 -0.40 0.02 16 52 H 0.06 1.24 8.14 -51.93 -0.42 0.81 16 53 H 0.07 1.55 6.26 -51.93 -0.33 1.22 16 LS Contribution 401.22 15.07 6.05 6.05 Total: -1.00 -32.24 401.22 -8.90 -41.15 By element: Atomic # 1 Polarization: 14.83 SS G_CDS: -9.32 Total: 5.51 kcal Atomic # 6 Polarization: 3.13 SS G_CDS: 0.59 Total: 3.73 kcal Atomic # 7 Polarization: -50.26 SS G_CDS: -0.06 Total: -50.32 kcal Atomic # 8 Polarization: -21.36 SS G_CDS: -1.14 Total: -22.50 kcal Atomic # 14 Polarization: 21.42 SS G_CDS: -5.03 Total: 16.39 kcal Total LS contribution 6.05 Total: 6.05 kcal Total: -32.24 -8.90 -41.15 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. ZINC001151216337.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 -67.514 kcal (2) G-P(sol) polarization free energy of solvation -32.245 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -99.758 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.901 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -41.145 kcal (6) G-S(sol) free energy of system = (1) + (5) -108.659 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.26 seconds