Wall clock time and date at job start Tue Mar 31 2020 21:39:15 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 1.52997 * 1 3 3 H 1.09003 * 109.47361 * 2 1 4 4 C 1.50705 * 109.47389 * 119.99640 * 2 1 3 5 5 O 1.21281 * 119.99584 * 104.09717 * 4 2 1 6 6 N 1.34774 * 119.99837 * 284.10840 * 4 2 1 7 7 C 1.47153 * 120.98799 * 185.85967 * 6 4 2 8 8 C 1.53291 * 108.37525 * 129.41561 * 7 6 4 9 9 H 1.08994 * 109.51591 * 292.42437 * 8 7 6 10 10 C 1.53007 * 109.51141 * 172.27590 * 8 7 6 11 11 O 1.42974 * 109.23136 * 52.35298 * 8 7 6 12 12 C 1.42897 * 114.20819 * 297.51370 * 11 8 7 13 13 C 1.52986 * 109.54476 * 182.20563 * 12 11 8 14 14 C 1.53194 * 109.35006 * 59.05686 * 13 12 11 15 15 N 1.46932 * 108.76911 * 54.58458 * 14 13 12 16 16 C 1.36936 * 120.64391 * 126.31741 * 15 14 13 17 17 H 1.07998 * 119.99761 * 209.42453 * 16 15 14 18 18 C 1.38810 * 120.00005 * 29.69614 * 16 15 14 19 19 N 1.31617 * 120.00008 * 9.91220 * 18 16 15 20 20 Si 1.86799 * 119.99994 * 189.90893 * 18 16 15 21 21 H 1.48504 * 109.47103 * 0.02562 * 20 18 16 22 22 H 1.48501 * 109.46957 * 120.00163 * 20 18 16 23 23 H 1.48497 * 109.47300 * 240.00422 * 20 18 16 24 24 C 1.46930 * 118.70956 * 306.59057 * 15 14 13 25 25 C 1.52731 * 109.03261 * 53.35190 * 24 15 14 26 26 C 1.47156 * 120.99259 * 5.87625 * 6 4 2 27 27 C 1.53002 * 109.47291 * 239.99780 * 2 1 3 28 28 C 1.52997 * 117.50238 * 128.74631 * 27 2 1 29 29 C 1.52997 * 117.49840 * 60.08645 * 27 2 1 30 30 H 1.09002 * 109.47357 * 304.72311 * 1 2 3 31 31 H 1.08997 * 109.47070 * 64.71970 * 1 2 3 32 32 H 1.08997 * 109.47290 * 184.71834 * 1 2 3 33 33 H 1.09010 * 109.68432 * 9.69510 * 7 6 4 34 34 H 1.09001 * 109.71705 * 249.16139 * 7 6 4 35 35 H 1.09002 * 109.46905 * 300.24944 * 10 8 7 36 36 H 1.08992 * 109.46786 * 60.24487 * 10 8 7 37 37 H 1.08996 * 109.47016 * 180.24957 * 10 8 7 38 38 H 1.09001 * 109.49374 * 299.09438 * 13 12 11 39 39 H 1.09006 * 109.49326 * 179.01471 * 13 12 11 40 40 H 1.09002 * 109.58491 * 294.80566 * 14 13 12 41 41 H 1.08995 * 109.59023 * 174.37421 * 14 13 12 42 42 H 0.97003 * 119.99858 * 179.97438 * 19 18 16 43 43 H 1.09001 * 109.58702 * 173.18639 * 24 15 14 44 44 H 1.09000 * 109.58953 * 293.61462 * 24 15 14 45 45 H 1.08996 * 109.56624 * 185.61826 * 25 24 15 46 46 H 1.09002 * 109.36231 * 65.60338 * 25 24 15 47 47 H 1.08998 * 109.67180 * 110.73109 * 26 6 4 48 48 H 1.09003 * 109.67490 * 350.19527 * 26 6 4 49 49 H 1.08997 * 115.54789 * 274.42002 * 27 2 1 50 50 H 1.09005 * 117.49642 * 0.02562 * 28 27 2 51 51 H 1.08998 * 117.50307 * 145.01829 * 28 27 2 52 52 H 1.09007 * 117.49845 * 214.98321 * 29 27 2 53 53 H 1.09001 * 117.50168 * 0.02562 * 29 27 2 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 1 1.8934 1.0277 0.0000 4 6 2.0324 -0.7103 1.2305 5 8 2.4757 -1.8358 1.1424 6 7 1.9888 -0.0950 2.4288 7 6 2.5885 -0.7149 3.6211 8 6 3.5005 0.3166 4.2950 9 1 4.3571 0.5202 3.6525 10 6 3.9867 -0.2314 5.6383 11 8 2.7669 1.5249 4.5097 12 6 2.3102 2.1540 3.3106 13 6 1.5903 3.4581 3.6591 14 6 2.5521 4.3837 4.4108 15 7 3.7661 4.5613 3.6022 16 6 4.2167 5.8151 3.2858 17 1 4.7637 5.9768 2.3688 18 6 3.9753 6.8771 4.1466 19 7 3.4902 6.6522 5.3492 20 14 4.3391 8.6252 3.5980 21 1 4.8735 8.6082 2.2125 22 1 3.0892 9.4262 3.6361 23 1 5.3434 9.2310 4.5088 24 6 4.4836 3.3675 3.1346 25 6 3.5042 2.4527 2.4020 26 6 1.3397 1.2165 2.5840 27 6 2.0400 -0.7213 -1.2492 28 6 3.0763 0.0038 -2.1101 29 6 1.6374 -0.1484 -2.6096 30 1 -0.3634 0.5854 0.8447 31 1 -0.3633 0.4388 -0.9292 32 1 -0.3634 -1.0241 0.0845 33 1 3.1741 -1.5860 3.3268 34 1 1.8026 -1.0177 4.3129 35 1 3.1290 -0.4365 6.2789 36 1 4.5458 -1.1524 5.4739 37 1 4.6315 0.5043 6.1189 38 1 0.7280 3.2404 4.2894 39 1 1.2577 3.9460 2.7429 40 1 2.8142 3.9372 5.3700 41 1 2.0765 5.3508 4.5733 42 1 3.3219 7.3943 5.9508 43 1 5.2824 3.6641 2.4548 44 1 4.9056 2.8370 3.9882 45 1 4.0030 1.5202 2.1385 46 1 3.1563 2.9479 1.4954 47 1 0.4270 1.1072 3.1697 48 1 1.0998 1.6257 1.6025 49 1 2.1253 -1.8046 -1.1646 50 1 3.3951 0.9946 -1.7863 51 1 3.8432 -0.6025 -2.5922 52 1 1.4582 -0.8549 -3.4201 53 1 1.0096 0.7426 -2.6147 RHF calculation, no. of doubly occupied orbitals= 65 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 ZINC001098580886.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 21:39:15 Heat of formation + Delta-G solvation = -31.709576 kcal Electronic energy + Delta-G solvation = -32077.444227 eV Core-core repulsion = 28143.562990 eV Total energy + Delta-G solvation = -3933.881237 eV No. of doubly occupied orbitals = 65 Molecular weight (most abundant/longest-lived isotopes) = 336.220 amu Computer time = 1.29 seconds Orbital eigenvalues (eV) -40.89082 -39.21961 -37.37924 -36.25565 -34.81116 -33.54366 -32.27704 -31.54870 -30.15263 -29.61965 -27.21258 -26.60110 -24.97297 -24.05408 -22.65275 -22.43689 -21.75193 -21.35348 -20.21823 -19.07520 -18.85428 -17.40607 -16.95341 -16.59779 -15.65910 -15.37665 -15.34971 -14.93851 -14.64528 -14.56999 -14.17274 -13.90427 -13.64206 -13.48190 -13.30389 -13.15608 -13.01850 -12.67667 -12.32308 -12.31848 -12.11397 -11.93277 -11.79555 -11.61424 -11.57248 -11.45808 -11.34931 -11.10586 -10.97145 -10.85200 -10.64412 -10.51436 -10.34072 -10.26225 -10.19372 -10.02204 -9.88606 -9.69790 -9.50213 -9.32940 -8.46697 -8.37540 -6.61176 -5.75988 -3.22941 2.56538 2.84101 3.36234 3.43988 3.45659 3.63327 3.89423 4.29494 4.41692 4.48872 4.71675 4.74793 4.86983 4.90744 5.04074 5.08275 5.10957 5.16410 5.22751 5.25448 5.37479 5.41431 5.43232 5.45087 5.51000 5.54428 5.60896 5.65458 5.66461 5.73191 5.76646 5.77971 5.91782 5.95485 6.01494 6.04584 6.14261 6.18590 6.27667 6.30998 6.40075 6.50459 6.53482 6.66289 6.74200 6.99155 7.32505 7.45185 7.61706 7.77285 7.82484 8.10550 8.48659 9.24650 9.86328 10.44251 11.31315 Molecular weight = 336.22amu Principal moments of inertia in cm(-1) A = 0.012551 B = 0.003807 C = 0.003225 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2230.438786 B = 7354.049606 C = 8680.315913 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.143 4.143 2 C -0.081 4.081 3 H 0.096 0.904 4 C 0.527 3.473 5 O -0.545 6.545 6 N -0.610 5.610 7 C 0.085 3.915 8 C 0.071 3.929 9 H 0.065 0.935 10 C -0.141 4.141 11 O -0.352 6.352 12 C 0.118 3.882 13 C -0.127 4.127 14 C 0.176 3.824 15 N -0.591 5.591 16 C -0.250 4.250 17 H 0.064 0.936 18 C 0.003 3.997 19 N -0.904 5.904 20 Si 0.903 3.097 21 H -0.278 1.278 22 H -0.289 1.289 23 H -0.290 1.290 24 C 0.153 3.847 25 C -0.155 4.155 26 C 0.080 3.920 27 C -0.137 4.137 28 C -0.179 4.179 29 C -0.177 4.177 30 H 0.064 0.936 31 H 0.070 0.930 32 H 0.061 0.939 33 H 0.095 0.905 34 H 0.071 0.929 35 H 0.063 0.937 36 H 0.068 0.932 37 H 0.070 0.930 38 H 0.058 0.942 39 H 0.068 0.932 40 H 0.027 0.973 41 H 0.093 0.907 42 H 0.253 0.747 43 H 0.050 0.950 44 H 0.021 0.979 45 H 0.052 0.948 46 H 0.065 0.935 47 H 0.075 0.925 48 H 0.093 0.907 49 H 0.117 0.883 50 H 0.095 0.905 51 H 0.094 0.906 52 H 0.094 0.906 53 H 0.095 0.905 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -6.003 -14.420 -8.620 17.840 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 -0.201 4.201 2 C -0.102 4.102 3 H 0.114 0.886 4 C 0.315 3.685 5 O -0.422 6.422 6 N -0.343 5.343 7 C -0.038 4.038 8 C 0.012 3.988 9 H 0.083 0.917 10 C -0.198 4.198 11 O -0.271 6.271 12 C 0.078 3.922 13 C -0.167 4.167 14 C 0.051 3.949 15 N -0.314 5.314 16 C -0.380 4.380 17 H 0.082 0.918 18 C -0.196 4.196 19 N -0.549 5.549 20 Si 0.733 3.267 21 H -0.203 1.203 22 H -0.216 1.216 23 H -0.217 1.217 24 C 0.026 3.974 25 C -0.194 4.194 26 C -0.043 4.043 27 C -0.155 4.155 28 C -0.216 4.216 29 C -0.214 4.214 30 H 0.083 0.917 31 H 0.089 0.911 32 H 0.080 0.920 33 H 0.113 0.887 34 H 0.090 0.910 35 H 0.082 0.918 36 H 0.086 0.914 37 H 0.089 0.911 38 H 0.076 0.924 39 H 0.087 0.913 40 H 0.045 0.955 41 H 0.111 0.889 42 H 0.063 0.937 43 H 0.068 0.932 44 H 0.039 0.961 45 H 0.071 0.929 46 H 0.084 0.916 47 H 0.093 0.907 48 H 0.111 0.889 49 H 0.135 0.865 50 H 0.114 0.886 51 H 0.112 0.888 52 H 0.112 0.888 53 H 0.113 0.887 Dipole moment (debyes) X Y Z Total from point charges -5.825 -14.812 -8.358 17.977 hybrid contribution 0.215 0.841 -0.452 0.979 sum -5.610 -13.971 -8.810 17.444 Atomic orbital electron populations 1.21807 0.92382 1.02896 1.02965 1.20852 0.97594 1.00070 0.91721 0.88607 1.20503 0.77825 0.86077 0.84055 1.90644 1.47095 1.18734 1.85769 1.48127 1.57109 1.20663 1.08352 1.22357 0.97707 0.97133 0.86560 1.22399 0.93819 0.85169 0.97430 0.91696 1.21685 1.01718 1.00825 0.95608 1.88075 1.72431 1.36931 1.29701 1.21746 0.93186 0.92091 0.85182 1.22230 0.99076 0.93656 1.01741 1.20764 0.85373 0.97704 0.91089 1.44014 1.25443 1.00574 1.61336 1.19236 1.32714 0.84580 1.01432 0.91819 1.25113 1.00994 0.98613 0.94844 1.69975 1.48840 1.30015 1.06068 0.86210 0.77603 0.84943 0.77939 1.20350 1.21616 1.21695 1.20661 0.92616 0.88461 0.95671 1.22472 0.98065 0.99725 0.99146 1.22745 0.96492 0.82755 1.02336 1.22075 1.03684 1.00080 0.89698 1.23054 0.92493 1.02096 1.03911 1.22972 0.98287 1.03198 0.96932 0.91745 0.91092 0.91973 0.88718 0.91040 0.91837 0.91360 0.91103 0.92369 0.91295 0.95530 0.88863 0.93688 0.93181 0.96144 0.92942 0.91638 0.90676 0.88900 0.86540 0.88634 0.88782 0.88760 0.88666 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 17. 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 -0.14 -1.29 8.80 37.16 0.33 -0.97 16 2 C -0.08 -0.89 2.02 -91.77 -0.19 -1.07 16 3 H 0.10 1.04 6.81 -51.93 -0.35 0.68 16 4 C 0.53 7.25 6.92 -10.98 -0.08 7.17 16 5 O -0.54 -9.06 15.17 5.56 0.08 -8.97 16 6 N -0.61 -8.12 2.52 -172.29 -0.43 -8.55 16 7 C 0.09 1.12 5.90 -3.53 -0.02 1.10 16 8 C 0.07 1.00 3.02 -26.58 -0.08 0.92 16 9 H 0.07 0.99 6.29 -51.93 -0.33 0.66 16 10 C -0.14 -1.69 9.57 37.16 0.36 -1.34 16 11 O -0.35 -6.01 8.65 -35.23 -0.30 -6.32 16 12 C 0.12 1.89 0.68 -90.50 -0.06 1.83 16 13 C -0.13 -2.29 5.10 -26.64 -0.14 -2.42 16 14 C 0.18 4.12 5.04 -3.71 -0.02 4.10 16 15 N -0.59 -14.50 3.00 -172.59 -0.52 -15.01 16 16 C -0.25 -6.73 9.61 -15.06 -0.14 -6.87 16 17 H 0.06 1.69 7.85 -52.49 -0.41 1.28 16 18 C 0.00 0.07 5.08 -17.43 -0.09 -0.02 16 19 N -0.90 -25.83 10.88 55.49 0.60 -25.22 16 20 Si 0.90 21.37 29.57 -169.99 -5.03 16.34 16 21 H -0.28 -6.43 7.11 56.52 0.40 -6.03 16 22 H -0.29 -6.85 7.11 56.52 0.40 -6.44 16 23 H -0.29 -6.96 7.11 56.52 0.40 -6.56 16 24 C 0.15 3.19 6.26 -3.95 -0.02 3.17 16 25 C -0.15 -2.62 4.31 -26.88 -0.12 -2.73 16 26 C 0.08 1.03 4.27 -3.55 -0.02 1.01 16 27 C -0.14 -1.47 4.89 -90.62 -0.44 -1.91 16 28 C -0.18 -1.76 10.18 -26.70 -0.27 -2.03 16 29 C -0.18 -1.53 9.68 -26.70 -0.26 -1.78 16 30 H 0.06 0.55 6.30 -51.93 -0.33 0.23 16 31 H 0.07 0.54 7.14 -51.93 -0.37 0.17 16 32 H 0.06 0.59 8.14 -51.93 -0.42 0.16 16 33 H 0.09 1.26 7.13 -51.92 -0.37 0.89 16 34 H 0.07 0.88 8.14 -51.93 -0.42 0.46 16 35 H 0.06 0.73 8.14 -51.93 -0.42 0.30 16 36 H 0.07 0.67 8.14 -51.93 -0.42 0.25 16 37 H 0.07 0.93 8.14 -51.93 -0.42 0.51 16 38 H 0.06 0.96 8.14 -51.93 -0.42 0.53 16 39 H 0.07 1.19 8.14 -51.93 -0.42 0.77 16 40 H 0.03 0.68 7.82 -51.93 -0.41 0.27 16 41 H 0.09 2.44 5.93 -51.93 -0.31 2.14 16 42 H 0.25 6.99 8.31 -40.82 -0.34 6.65 16 43 H 0.05 1.04 7.93 -51.93 -0.41 0.63 16 44 H 0.02 0.45 7.83 -51.93 -0.41 0.05 16 45 H 0.05 0.84 6.16 -51.93 -0.32 0.52 16 46 H 0.06 1.09 8.14 -51.93 -0.42 0.67 16 47 H 0.08 0.92 8.14 -51.93 -0.42 0.49 16 48 H 0.09 1.05 4.87 -51.93 -0.25 0.80 16 49 H 0.12 1.42 7.32 -51.93 -0.38 1.04 16 50 H 0.10 0.95 8.05 -51.93 -0.42 0.54 16 51 H 0.09 0.87 8.14 -51.93 -0.42 0.45 16 52 H 0.09 0.72 8.14 -51.93 -0.42 0.30 16 53 H 0.09 0.75 7.59 -51.93 -0.39 0.36 16 LS Contribution 395.31 15.07 5.96 5.96 Total: -1.00 -30.73 395.31 -10.14 -40.87 By element: Atomic # 1 Polarization: 12.00 SS G_CDS: -9.24 Total: 2.76 kcal Atomic # 6 Polarization: -0.59 SS G_CDS: -1.26 Total: -1.85 kcal Atomic # 7 Polarization: -48.44 SS G_CDS: -0.35 Total: -48.79 kcal Atomic # 8 Polarization: -15.07 SS G_CDS: -0.22 Total: -15.29 kcal Atomic # 14 Polarization: 21.37 SS G_CDS: -5.03 Total: 16.34 kcal Total LS contribution 5.96 Total: 5.96 kcal Total: -30.73 -10.14 -40.87 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. ZINC001098580886.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 9.156 kcal (2) G-P(sol) polarization free energy of solvation -30.726 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -21.570 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.139 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -40.865 kcal (6) G-S(sol) free energy of system = (1) + (5) -31.710 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.29 seconds