Wall clock time and date at job start Sat Apr 11 2020 06:11:46 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 1.42905 * 1 3 3 C 1.42897 * 114.00160 * 2 1 4 4 C 1.53005 * 109.47009 * 180.02562 * 3 2 1 5 5 C 1.53006 * 109.47163 * 300.00232 * 4 3 2 6 6 C 1.52994 * 109.47136 * 59.99915 * 4 3 2 7 7 C 1.52994 * 109.46958 * 180.02562 * 4 3 2 8 8 C 1.50708 * 109.47043 * 180.02562 * 7 4 3 9 9 O 1.21285 * 119.99787 * 359.97438 * 8 7 4 10 10 N 1.34781 * 119.99896 * 179.97438 * 8 7 4 11 11 C 1.46840 * 120.41125 * 359.72106 * 10 8 7 12 12 C 1.52906 * 109.49825 * 232.19321 * 11 10 8 13 13 C 1.52792 * 108.89354 * 306.41883 * 12 11 10 14 14 H 1.09001 * 109.34148 * 302.69955 * 13 12 11 15 15 O 1.42605 * 111.11130 * 182.39169 * 13 12 11 16 16 C 1.43144 * 113.63249 * 176.38418 * 15 13 12 17 17 C 1.53199 * 109.74292 * 61.68661 * 16 15 13 18 18 N 1.47352 * 108.79795 * 308.79121 * 17 16 15 19 19 C 1.36935 * 121.30749 * 230.25600 * 18 17 16 20 20 H 1.08000 * 120.00187 * 152.51581 * 19 18 17 21 21 C 1.38818 * 119.99897 * 332.51711 * 19 18 17 22 22 N 1.31612 * 119.99765 * 344.72623 * 21 19 18 23 23 Si 1.86799 * 119.99796 * 164.72455 * 21 19 18 24 24 H 1.48498 * 109.47369 * 0.02562 * 23 21 19 25 25 H 1.48498 * 109.46886 * 120.00273 * 23 21 19 26 26 H 1.48503 * 109.47121 * 239.99885 * 23 21 19 27 27 C 1.46882 * 117.38890 * 50.23602 * 18 17 16 28 28 H 1.08997 * 110.20424 * 67.97277 * 27 18 17 29 29 C 1.47133 * 120.40742 * 180.02562 * 10 8 7 30 30 H 1.08994 * 109.46731 * 299.99985 * 1 2 3 31 31 H 1.09002 * 109.47109 * 179.97438 * 1 2 3 32 32 H 1.09003 * 109.46876 * 59.99618 * 1 2 3 33 33 H 1.08994 * 109.47030 * 300.00013 * 3 2 1 34 34 H 1.09002 * 109.47196 * 60.00375 * 3 2 1 35 35 H 1.08999 * 109.47159 * 59.99788 * 5 4 3 36 36 H 1.08998 * 109.46733 * 180.02562 * 5 4 3 37 37 H 1.09000 * 109.46821 * 300.00133 * 5 4 3 38 38 H 1.09001 * 109.47032 * 60.00262 * 6 4 3 39 39 H 1.08998 * 109.47351 * 179.97438 * 6 4 3 40 40 H 1.09003 * 109.47656 * 300.00111 * 6 4 3 41 41 H 1.09001 * 109.47078 * 299.99657 * 7 4 3 42 42 H 1.09002 * 109.47537 * 60.00178 * 7 4 3 43 43 H 1.09002 * 109.50977 * 352.18820 * 11 10 8 44 44 H 1.08996 * 109.50374 * 112.32105 * 11 10 8 45 45 H 1.08997 * 109.65452 * 186.52666 * 12 11 10 46 46 H 1.08999 * 109.53840 * 66.23407 * 12 11 10 47 47 H 1.09002 * 109.43016 * 181.76997 * 16 15 13 48 48 H 1.09002 * 109.42962 * 301.66099 * 16 15 13 49 49 H 1.08996 * 109.58034 * 68.57944 * 17 16 15 50 50 H 1.08994 * 109.58345 * 189.00031 * 17 16 15 51 51 H 0.97002 * 120.00378 * 180.02562 * 22 21 19 52 52 H 1.09002 * 109.72381 * 246.42867 * 29 10 8 53 53 H 1.08993 * 109.72971 * 7.05441 * 29 10 8 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 1.4291 0.0000 0.0000 3 6 2.0103 1.3054 0.0000 4 6 3.5356 1.1845 -0.0006 5 6 3.9875 0.4249 1.2483 6 6 3.9865 0.4255 -1.2501 7 6 4.1579 2.5822 0.0000 8 6 5.6602 2.4631 -0.0013 9 8 6.1818 1.3681 -0.0021 10 7 6.4242 3.5735 -0.0015 11 6 5.8023 4.9037 -0.0067 12 6 6.3902 5.7375 -1.1456 13 6 7.9131 5.7393 -1.0225 14 1 8.1957 6.1272 -0.0438 15 8 8.5091 6.5509 -2.0323 16 6 9.9320 6.6570 -1.9175 17 6 10.5679 5.2710 -2.0642 18 7 9.8966 4.3403 -1.1398 19 6 10.6133 3.5428 -0.2881 20 1 10.1755 3.2179 0.6442 21 6 11.9026 3.1520 -0.6230 22 7 12.3293 3.2835 -1.8610 23 14 13.0316 2.4397 0.6836 24 1 12.3178 2.3972 1.9851 25 1 13.4328 1.0639 0.2945 26 1 14.2418 3.2911 0.8098 27 6 8.4286 4.3019 -1.1675 28 1 8.0807 3.8810 -2.1108 29 6 7.8918 3.4677 -0.0033 30 1 -0.3632 0.5138 0.8900 31 1 -0.3633 -1.0277 -0.0005 32 1 -0.3633 0.5139 -0.8900 33 1 1.6887 1.8463 -0.8899 34 1 1.6887 1.8463 0.8900 35 1 3.5441 -0.5708 1.2483 36 1 5.0741 0.3393 1.2480 37 1 3.6662 0.9657 2.1385 38 1 3.6645 0.9666 -2.1399 39 1 5.0731 0.3397 -1.2509 40 1 3.5431 -0.5703 -1.2502 41 1 3.8360 3.1237 -0.8896 42 1 3.8367 3.1226 0.8904 43 1 4.7265 4.8020 -0.1495 44 1 5.9986 5.4009 0.9432 45 1 6.0173 6.7598 -1.0818 46 1 6.1016 5.3024 -2.1024 47 1 10.3109 7.3144 -2.7001 48 1 10.1872 7.0705 -0.9418 49 1 10.4458 4.9197 -3.0888 50 1 11.6284 5.3278 -1.8192 51 1 13.2301 3.0101 -2.0952 52 1 8.2893 3.8500 0.9369 53 1 8.1854 2.4258 -0.1303 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 ZINC001177055864.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 06:11:46 Heat of formation + Delta-G solvation = -96.942584 kcal Electronic energy + Delta-G solvation = -32114.579117 eV Core-core repulsion = 27987.413113 eV Total energy + Delta-G solvation = -4127.166005 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 1.30 seconds Orbital eigenvalues (eV) -40.47332 -39.09560 -38.16996 -36.34387 -35.23745 -34.70660 -31.93326 -31.40887 -30.03785 -28.55224 -27.51590 -27.08344 -26.86484 -25.64021 -24.78642 -23.93522 -22.08566 -21.44133 -19.85476 -19.48387 -18.44981 -17.24638 -16.83143 -16.49428 -16.04315 -15.77958 -15.54288 -15.27504 -15.05608 -15.01798 -14.62200 -14.12344 -14.02161 -13.73511 -13.66382 -13.46719 -13.15176 -13.00739 -12.79955 -12.69684 -12.38833 -12.30280 -11.93886 -11.82216 -11.66574 -11.34023 -11.20178 -11.07595 -10.96550 -10.94577 -10.77473 -10.73868 -10.70304 -10.56252 -10.26461 -10.20037 -9.99224 -9.85976 -9.61968 -9.24857 -8.98831 -8.55018 -8.32220 -6.74279 -5.84815 -3.30318 2.81389 3.08025 3.34697 3.43078 3.44719 3.61881 4.22347 4.42283 4.52524 4.69395 4.76940 4.86476 4.92512 5.05561 5.09636 5.18073 5.20487 5.24341 5.26983 5.33805 5.38281 5.39893 5.40676 5.50343 5.54996 5.67045 5.70799 5.73132 5.89320 5.92682 6.03083 6.06482 6.08653 6.13525 6.13803 6.23739 6.29153 6.31584 6.44375 6.56210 6.60106 6.70239 6.74934 6.87977 6.95556 7.11866 7.49106 7.63514 7.71562 7.87439 8.31377 8.43087 9.09072 9.72462 10.30133 11.23379 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.014399 B = 0.003086 C = 0.002681 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1944.169423 B = 9070.062309 C =10440.564846 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.031 3.969 2 O -0.382 6.382 3 C 0.071 3.929 4 C -0.043 4.043 5 C -0.149 4.149 6 C -0.149 4.149 7 C -0.132 4.132 8 C 0.516 3.484 9 O -0.525 6.525 10 N -0.612 5.612 11 C 0.112 3.888 12 C -0.125 4.125 13 C 0.077 3.923 14 H 0.052 0.948 15 O -0.390 6.390 16 C 0.039 3.961 17 C 0.142 3.858 18 N -0.587 5.587 19 C -0.257 4.257 20 H 0.073 0.927 21 C 0.006 3.994 22 N -0.901 5.901 23 Si 0.904 3.096 24 H -0.276 1.276 25 H -0.289 1.289 26 H -0.289 1.289 27 C 0.138 3.862 28 H 0.036 0.964 29 C 0.124 3.876 30 H 0.038 0.962 31 H 0.084 0.916 32 H 0.039 0.961 33 H 0.047 0.953 34 H 0.047 0.953 35 H 0.058 0.942 36 H 0.086 0.914 37 H 0.041 0.959 38 H 0.042 0.958 39 H 0.086 0.914 40 H 0.058 0.942 41 H 0.092 0.908 42 H 0.091 0.909 43 H 0.085 0.915 44 H 0.069 0.931 45 H 0.079 0.921 46 H 0.073 0.927 47 H 0.081 0.919 48 H 0.040 0.960 49 H 0.028 0.972 50 H 0.095 0.905 51 H 0.255 0.745 52 H 0.071 0.929 53 H 0.102 0.898 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -20.893 3.089 3.811 21.461 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 -0.065 4.065 2 O -0.301 6.301 3 C -0.005 4.005 4 C -0.043 4.043 5 C -0.206 4.206 6 C -0.206 4.206 7 C -0.172 4.172 8 C 0.304 3.696 9 O -0.402 6.402 10 N -0.346 5.346 11 C -0.012 4.012 12 C -0.164 4.164 13 C 0.017 3.983 14 H 0.070 0.930 15 O -0.309 6.309 16 C -0.038 4.038 17 C 0.017 3.983 18 N -0.312 5.312 19 C -0.386 4.386 20 H 0.090 0.910 21 C -0.193 4.193 22 N -0.545 5.545 23 Si 0.733 3.267 24 H -0.201 1.201 25 H -0.216 1.216 26 H -0.215 1.215 27 C 0.030 3.970 28 H 0.053 0.947 29 C 0.002 3.998 30 H 0.057 0.943 31 H 0.102 0.898 32 H 0.057 0.943 33 H 0.066 0.934 34 H 0.065 0.935 35 H 0.077 0.923 36 H 0.105 0.895 37 H 0.060 0.940 38 H 0.061 0.939 39 H 0.105 0.895 40 H 0.077 0.923 41 H 0.111 0.889 42 H 0.110 0.890 43 H 0.104 0.896 44 H 0.087 0.913 45 H 0.097 0.903 46 H 0.091 0.909 47 H 0.099 0.901 48 H 0.059 0.941 49 H 0.046 0.954 50 H 0.113 0.887 51 H 0.065 0.935 52 H 0.089 0.911 53 H 0.121 0.879 Dipole moment (debyes) X Y Z Total from point charges -20.418 2.358 3.621 20.870 hybrid contribution 0.563 0.007 0.643 0.854 sum -19.855 2.365 4.264 20.445 Atomic orbital electron populations 1.22722 0.81484 1.02605 0.99732 1.87905 1.19102 1.27787 1.95307 1.22596 0.93626 0.84595 0.99715 1.20246 0.91553 0.94028 0.98517 1.22027 1.04147 0.99796 0.94600 1.22030 1.04216 0.99782 0.94618 1.21719 0.92967 0.98547 1.03984 1.20401 0.89034 0.83984 0.76169 1.90604 1.74735 1.25729 1.49155 1.48321 1.07672 1.05548 1.73074 1.21591 0.97527 0.83168 0.98874 1.21770 0.94890 1.00392 0.99327 1.22434 0.91760 0.92953 0.91157 0.93041 1.87735 1.21152 1.69700 1.52332 1.23333 0.80382 1.00029 1.00099 1.21437 0.98272 0.85504 0.93099 1.44034 0.98180 1.44200 1.44784 1.19171 0.96584 1.25279 0.97580 0.90983 1.25082 0.99486 0.98940 0.95782 1.70022 1.17784 1.50782 1.15913 0.86203 0.80747 0.78508 0.81230 1.20124 1.21551 1.21526 1.21269 0.86942 0.92515 0.96291 0.94658 1.21744 0.76075 1.03315 0.98663 0.94293 0.89770 0.94263 0.93441 0.93490 0.92328 0.89535 0.93987 0.93892 0.89487 0.92327 0.88932 0.89035 0.89631 0.91258 0.90275 0.90874 0.90078 0.94132 0.95416 0.88694 0.93531 0.91116 0.87930 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 18. 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 0.23 11.01 101.05 1.11 1.34 16 2 O -0.38 -4.10 9.35 -35.23 -0.33 -4.43 16 3 C 0.07 0.68 4.81 37.16 0.18 0.85 16 4 C -0.04 -0.49 0.60 -154.51 -0.09 -0.58 16 5 C -0.15 -1.88 8.03 37.16 0.30 -1.58 16 6 C -0.15 -1.96 8.03 37.15 0.30 -1.66 16 7 C -0.13 -1.38 3.11 -27.88 -0.09 -1.46 16 8 C 0.52 7.64 7.11 -10.98 -0.08 7.56 16 9 O -0.53 -9.66 10.75 5.55 0.06 -9.60 16 10 N -0.61 -9.14 2.99 -172.99 -0.52 -9.66 16 11 C 0.11 1.25 6.29 -3.90 -0.02 1.22 16 12 C -0.13 -1.64 5.81 -26.89 -0.16 -1.79 16 13 C 0.08 1.36 2.48 -26.64 -0.07 1.29 16 14 H 0.05 0.93 8.13 -51.93 -0.42 0.51 16 15 O -0.39 -7.56 10.49 -35.23 -0.37 -7.93 16 16 C 0.04 0.77 6.95 37.26 0.26 1.02 16 17 C 0.14 3.38 5.42 -3.47 -0.02 3.36 16 18 N -0.59 -14.48 3.04 -164.38 -0.50 -14.98 16 19 C -0.26 -6.83 8.87 -15.06 -0.13 -6.97 16 20 H 0.07 1.87 6.27 -52.49 -0.33 1.54 16 21 C 0.01 0.17 4.99 -17.43 -0.09 0.08 16 22 N -0.90 -25.84 11.16 55.49 0.62 -25.22 16 23 Si 0.90 21.55 29.58 -169.99 -5.03 16.53 16 24 H -0.28 -6.44 7.11 56.52 0.40 -6.03 16 25 H -0.29 -7.03 7.11 56.52 0.40 -6.62 16 26 H -0.29 -6.86 7.11 56.52 0.40 -6.46 16 27 C 0.14 2.88 3.02 -67.55 -0.20 2.68 16 28 H 0.04 0.83 8.14 -51.93 -0.42 0.40 16 29 C 0.12 2.36 4.49 -3.72 -0.02 2.35 16 30 H 0.04 0.24 8.14 -51.93 -0.42 -0.18 16 31 H 0.08 0.52 8.14 -51.93 -0.42 0.10 16 32 H 0.04 0.25 8.14 -51.93 -0.42 -0.18 16 33 H 0.05 0.40 8.14 -51.93 -0.42 -0.03 16 34 H 0.05 0.38 8.14 -51.93 -0.42 -0.04 16 35 H 0.06 0.75 7.68 -51.93 -0.40 0.35 16 36 H 0.09 1.32 5.51 -51.93 -0.29 1.03 16 37 H 0.04 0.47 8.14 -51.93 -0.42 0.05 16 38 H 0.04 0.51 8.14 -51.93 -0.42 0.09 16 39 H 0.09 1.39 5.51 -51.93 -0.29 1.10 16 40 H 0.06 0.77 7.68 -51.93 -0.40 0.38 16 41 H 0.09 0.81 7.65 -51.93 -0.40 0.41 16 42 H 0.09 0.75 7.97 -51.93 -0.41 0.34 16 43 H 0.09 0.68 5.91 -51.93 -0.31 0.37 16 44 H 0.07 0.70 8.14 -51.93 -0.42 0.28 16 45 H 0.08 0.88 8.14 -51.93 -0.42 0.45 16 46 H 0.07 1.00 8.14 -51.93 -0.42 0.58 16 47 H 0.08 1.38 8.14 -51.93 -0.42 0.96 16 48 H 0.04 0.77 8.14 -51.93 -0.42 0.35 16 49 H 0.03 0.71 8.14 -51.93 -0.42 0.29 16 50 H 0.09 2.45 6.23 -51.93 -0.32 2.13 16 51 H 0.25 7.06 8.31 -40.82 -0.34 6.72 16 52 H 0.07 1.37 7.37 -51.93 -0.38 0.98 16 53 H 0.10 2.28 6.80 -51.93 -0.35 1.93 16 LS Contribution 394.69 15.07 5.95 5.95 Total: -1.00 -31.55 394.69 -8.29 -39.84 By element: Atomic # 1 Polarization: 11.14 SS G_CDS: -9.35 Total: 1.78 kcal Atomic # 6 Polarization: 6.53 SS G_CDS: 1.18 Total: 7.72 kcal Atomic # 7 Polarization: -49.45 SS G_CDS: -0.40 Total: -49.85 kcal Atomic # 8 Polarization: -21.32 SS G_CDS: -0.64 Total: -21.96 kcal Atomic # 14 Polarization: 21.55 SS G_CDS: -5.03 Total: 16.53 kcal Total LS contribution 5.95 Total: 5.95 kcal Total: -31.55 -8.29 -39.84 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. ZINC001177055864.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 -57.103 kcal (2) G-P(sol) polarization free energy of solvation -31.553 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -88.656 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.287 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -39.840 kcal (6) G-S(sol) free energy of system = (1) + (5) -96.943 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.30 seconds