Wall clock time and date at job start Fri Apr 10 2020 22:30:22 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 1.53006 * 1 3 3 C 1.53004 * 109.47094 * 2 1 4 4 C 1.52993 * 109.47252 * 239.99545 * 2 1 3 5 5 C 1.53008 * 109.47225 * 185.00276 * 4 2 1 6 6 C 1.52997 * 109.46949 * 180.02562 * 5 4 2 7 7 C 1.53004 * 109.46651 * 179.97438 * 6 5 4 8 8 C 1.50708 * 109.46766 * 179.97438 * 7 6 5 9 9 O 1.21276 * 119.99902 * 359.97438 * 8 7 6 10 10 N 1.34777 * 119.99538 * 180.02562 * 8 7 6 11 11 C 1.46507 * 119.99577 * 180.02562 * 10 8 7 12 12 C 1.53004 * 109.46805 * 179.97438 * 11 10 8 13 13 H 1.08996 * 109.49725 * 304.93399 * 12 11 10 14 14 C 1.53040 * 109.49430 * 184.83350 * 12 11 10 15 15 C 1.53040 * 109.53584 * 178.68364 * 14 12 11 16 16 C 1.53190 * 109.31205 * 61.36566 * 15 14 12 17 17 N 1.46925 * 108.77751 * 305.36603 * 16 15 14 18 18 C 1.36938 * 120.62731 * 233.63103 * 17 16 15 19 19 H 1.08001 * 119.99933 * 151.80792 * 18 17 16 20 20 C 1.38810 * 119.99945 * 331.80303 * 18 17 16 21 21 N 1.31620 * 120.00591 * 343.09151 * 20 18 17 22 22 Si 1.86803 * 119.99722 * 163.09611 * 20 18 17 23 23 H 1.48499 * 109.47519 * 59.99803 * 22 20 18 24 24 H 1.48500 * 109.47112 * 180.02562 * 22 20 18 25 25 H 1.48507 * 109.46771 * 299.99726 * 22 20 18 26 26 C 1.46919 * 118.73599 * 53.60680 * 17 16 15 27 27 H 1.08999 * 109.46495 * 60.00322 * 1 2 3 28 28 H 1.08995 * 109.47236 * 300.00237 * 1 2 3 29 29 H 1.08997 * 109.46599 * 180.02562 * 1 2 3 30 30 H 1.09008 * 109.46607 * 119.99569 * 2 1 3 31 31 H 1.08996 * 109.46804 * 299.99608 * 3 2 1 32 32 H 1.08995 * 109.47273 * 59.99785 * 3 2 1 33 33 H 1.08999 * 109.46596 * 179.97438 * 3 2 1 34 34 H 1.09002 * 109.47382 * 304.99973 * 4 2 1 35 35 H 1.09001 * 109.47090 * 65.00111 * 4 2 1 36 36 H 1.09002 * 109.46693 * 300.00119 * 5 4 2 37 37 H 1.08992 * 109.47077 * 60.00050 * 5 4 2 38 38 H 1.09002 * 109.47338 * 299.99502 * 6 5 4 39 39 H 1.09001 * 109.47409 * 59.99808 * 6 5 4 40 40 H 1.08996 * 109.47326 * 299.99633 * 7 6 5 41 41 H 1.09001 * 109.47226 * 59.99873 * 7 6 5 42 42 H 0.97000 * 120.00480 * 359.97438 * 10 8 7 43 43 H 1.08996 * 109.46814 * 299.99481 * 11 10 8 44 44 H 1.08993 * 109.46841 * 59.99779 * 11 10 8 45 45 H 1.08994 * 109.46094 * 298.70864 * 14 12 11 46 46 H 1.09001 * 109.45639 * 58.66449 * 14 12 11 47 47 H 1.08999 * 109.49793 * 301.41659 * 15 14 12 48 48 H 1.08996 * 109.49842 * 181.32081 * 15 14 12 49 49 H 1.09007 * 109.58678 * 185.57361 * 16 15 14 50 50 H 1.08999 * 109.69959 * 65.22493 * 16 15 14 51 51 H 0.96990 * 120.00355 * 180.02562 * 21 20 18 52 52 H 1.09004 * 109.58222 * 186.60213 * 26 17 16 53 53 H 1.08998 * 109.58908 * 66.18677 * 26 17 16 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 1.5301 0.0000 0.0000 3 6 2.0401 1.4425 0.0000 4 6 2.0401 -0.7213 -1.2491 5 6 3.5650 -0.8312 -1.1878 6 6 4.0750 -1.5519 -2.4373 7 6 5.5999 -1.6612 -2.3762 8 6 6.1022 -2.3717 -3.6067 9 8 5.3178 -2.7535 -4.4491 10 7 7.4231 -2.5837 -3.7702 11 6 7.9115 -3.2739 -4.9667 12 6 9.4364 -3.3833 -4.9055 13 1 9.8672 -2.3911 -4.7712 14 6 9.9572 -3.9952 -6.2080 15 6 11.4848 -4.0747 -6.1612 16 6 11.9097 -4.9778 -4.9990 17 7 11.2932 -4.4785 -3.7623 18 6 12.0605 -4.2043 -2.6617 19 1 11.7413 -3.4530 -1.9545 20 6 13.2484 -4.8920 -2.4549 21 7 13.4811 -6.0135 -3.1033 22 14 14.5168 -4.2257 -1.2563 23 1 13.9163 -4.1317 0.0986 24 1 15.6879 -5.1380 -1.2170 25 1 14.9551 -2.8773 -1.6982 26 6 9.8381 -4.2786 -3.7292 27 1 -0.3632 0.5138 -0.8900 28 1 -0.3633 0.5138 0.8899 29 1 -0.3632 -1.0277 0.0005 30 1 1.8933 -0.5138 0.8901 31 1 1.6768 1.9563 -0.8900 32 1 1.6767 1.9564 0.8899 33 1 3.1300 1.4424 0.0005 34 1 1.6055 -1.7199 -1.2950 35 1 1.7517 -0.1584 -2.1369 36 1 3.9996 0.1674 -1.1419 37 1 3.8532 -1.3940 -0.3001 38 1 3.6404 -2.5505 -2.4836 39 1 3.7866 -0.9887 -3.3248 40 1 6.0342 -0.6625 -2.3301 41 1 5.8886 -2.2242 -1.4886 42 1 8.0505 -2.2787 -3.0962 43 1 7.4769 -4.2724 -5.0129 44 1 7.6233 -2.7107 -5.8541 45 1 9.5449 -4.9968 -6.3290 46 1 9.6516 -3.3729 -7.0491 47 1 11.8968 -3.0762 -6.0154 48 1 11.8565 -4.4888 -7.0984 49 1 12.9951 -4.9592 -4.8996 50 1 11.5774 -5.9988 -5.1865 51 1 14.3110 -6.4942 -2.9586 52 1 9.5565 -3.7986 -2.7919 53 1 9.3349 -5.2417 -3.8144 RHF calculation, no. of doubly occupied orbitals= 61 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 ZINC000412116527.mol2 53 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Fri Apr 10 2020 22:30:22 Heat of formation + Delta-G solvation = -69.852472 kcal Electronic energy + Delta-G solvation = -25648.700269 eV Core-core repulsion = 22132.761885 eV Total energy + Delta-G solvation = -3515.938384 eV No. of doubly occupied orbitals = 61 Molecular weight (most abundant/longest-lived isotopes) = 310.236 amu Computer time = 0.80 seconds Orbital eigenvalues (eV) -39.71739 -37.89451 -37.42897 -34.84715 -34.11038 -32.99187 -30.66644 -30.44647 -29.43674 -27.50538 -25.90270 -25.29628 -24.19813 -22.14018 -21.47726 -20.87766 -20.40425 -20.01696 -19.02441 -17.01014 -16.54224 -16.24808 -15.72907 -15.47130 -14.85488 -14.78866 -14.51842 -14.26977 -14.02350 -13.64025 -13.43779 -13.41035 -12.88168 -12.77780 -12.65844 -12.54113 -12.31323 -12.18410 -12.15369 -11.94996 -11.67838 -11.47983 -11.29245 -11.02668 -11.00702 -10.89759 -10.74337 -10.70565 -10.60559 -10.51747 -10.25933 -10.19375 -9.96491 -9.79918 -9.51412 -9.43728 -8.88093 -8.48415 -6.69189 -5.81196 -3.24448 2.75670 3.33590 3.35483 3.41850 3.42342 4.40029 4.45854 4.55351 4.59665 4.76518 4.84227 4.93315 5.10441 5.16194 5.22991 5.28895 5.30752 5.35043 5.43023 5.43311 5.46280 5.50225 5.53011 5.58000 5.61226 5.65387 5.72275 5.80440 5.82873 5.89743 5.95950 5.97007 6.00869 6.04943 6.16534 6.22753 6.23529 6.32797 6.37014 6.55198 6.58065 6.69685 6.76943 6.84931 6.95529 7.38290 7.64072 7.66089 7.75833 8.34654 8.42391 9.18484 9.82008 10.39150 11.27054 Molecular weight = 310.24amu Principal moments of inertia in cm(-1) A = 0.016607 B = 0.002197 C = 0.001991 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1685.643380 B =12740.107810 C =14062.989582 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.148 4.148 2 C -0.099 4.099 3 C -0.150 4.150 4 C -0.115 4.115 5 C -0.122 4.122 6 C -0.103 4.103 7 C -0.142 4.142 8 C 0.509 3.491 9 O -0.550 6.550 10 N -0.726 5.726 11 C 0.127 3.873 12 C -0.117 4.117 13 H 0.072 0.928 14 C -0.100 4.100 15 C -0.142 4.142 16 C 0.169 3.831 17 N -0.591 5.591 18 C -0.255 4.255 19 H 0.064 0.936 20 C 0.003 3.997 21 N -0.901 5.901 22 Si 0.902 3.098 23 H -0.283 1.283 24 H -0.290 1.290 25 H -0.284 1.284 26 C 0.154 3.846 27 H 0.053 0.947 28 H 0.052 0.948 29 H 0.053 0.947 30 H 0.069 0.931 31 H 0.053 0.947 32 H 0.051 0.949 33 H 0.058 0.942 34 H 0.062 0.938 35 H 0.062 0.938 36 H 0.064 0.936 37 H 0.062 0.938 38 H 0.068 0.932 39 H 0.067 0.933 40 H 0.091 0.909 41 H 0.093 0.907 42 H 0.403 0.597 43 H 0.064 0.936 44 H 0.060 0.940 45 H 0.056 0.944 46 H 0.046 0.954 47 H 0.054 0.946 48 H 0.049 0.951 49 H 0.086 0.914 50 H 0.017 0.983 51 H 0.254 0.746 52 H 0.050 0.950 53 H 0.018 0.982 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -19.142 11.746 2.344 22.580 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 -0.206 4.206 2 C -0.117 4.117 3 C -0.207 4.207 4 C -0.153 4.153 5 C -0.159 4.159 6 C -0.141 4.141 7 C -0.182 4.182 8 C 0.295 3.705 9 O -0.428 6.428 10 N -0.377 5.377 11 C 0.003 3.997 12 C -0.138 4.138 13 H 0.091 0.909 14 C -0.138 4.138 15 C -0.181 4.181 16 C 0.043 3.957 17 N -0.314 5.314 18 C -0.384 4.384 19 H 0.082 0.918 20 C -0.196 4.196 21 N -0.545 5.545 22 Si 0.732 3.268 23 H -0.209 1.209 24 H -0.216 1.216 25 H -0.210 1.210 26 C 0.028 3.972 27 H 0.072 0.928 28 H 0.071 0.929 29 H 0.073 0.927 30 H 0.087 0.913 31 H 0.072 0.928 32 H 0.070 0.930 33 H 0.077 0.923 34 H 0.081 0.919 35 H 0.080 0.920 36 H 0.083 0.917 37 H 0.081 0.919 38 H 0.087 0.913 39 H 0.086 0.914 40 H 0.109 0.891 41 H 0.111 0.889 42 H 0.238 0.762 43 H 0.083 0.917 44 H 0.078 0.922 45 H 0.075 0.925 46 H 0.065 0.935 47 H 0.072 0.928 48 H 0.068 0.932 49 H 0.104 0.896 50 H 0.036 0.964 51 H 0.064 0.936 52 H 0.068 0.932 53 H 0.036 0.964 Dipole moment (debyes) X Y Z Total from point charges -19.532 11.335 1.761 22.652 hybrid contribution 1.111 0.382 0.915 1.489 sum -18.421 11.718 2.676 21.995 Atomic orbital electron populations 1.21849 0.95445 1.01659 1.01597 1.21143 0.95547 0.96448 0.98607 1.21898 1.01311 0.95959 1.01508 1.21647 0.95486 1.00515 0.97606 1.21682 0.95536 1.00728 0.98002 1.21332 0.92911 1.01710 0.98134 1.21706 0.98019 1.01708 0.96793 1.20726 0.82216 0.79410 0.88109 1.90677 1.55457 1.51778 1.44883 1.46140 1.07482 1.59647 1.24441 1.21439 0.94619 0.96857 0.86801 1.21950 0.91918 1.01235 0.98707 0.90933 1.21341 0.97100 0.99995 0.95354 1.22169 0.94476 1.01524 0.99916 1.20792 0.99622 0.92540 0.82715 1.44023 1.00120 1.77096 1.10119 1.19106 1.02540 1.14887 1.01902 0.91825 1.25054 1.00407 0.95226 0.98920 1.70022 1.25290 1.14269 1.44966 0.86375 0.81236 0.78251 0.80915 1.20892 1.21632 1.21038 1.20892 0.86570 0.95403 0.94383 0.92763 0.92891 0.92747 0.91296 0.92785 0.93019 0.92323 0.91934 0.91953 0.91731 0.91933 0.91291 0.91386 0.89068 0.88866 0.76237 0.91719 0.92155 0.92496 0.93478 0.92765 0.93191 0.89607 0.96439 0.93550 0.93167 0.96398 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 -0.15 -0.91 9.19 37.16 0.34 -0.57 16 2 C -0.10 -0.65 2.92 -90.62 -0.26 -0.92 16 3 C -0.15 -0.94 8.95 37.16 0.33 -0.60 16 4 C -0.12 -0.84 4.68 -26.73 -0.13 -0.96 16 5 C -0.12 -0.92 4.97 -26.73 -0.13 -1.05 16 6 C -0.10 -0.98 4.50 -26.73 -0.12 -1.10 16 7 C -0.14 -1.36 5.70 -27.88 -0.16 -1.52 16 8 C 0.51 6.86 7.83 -10.98 -0.09 6.78 16 9 O -0.55 -9.46 15.98 5.56 0.09 -9.37 16 10 N -0.73 -9.54 5.33 -60.29 -0.32 -9.86 16 11 C 0.13 1.86 5.07 -4.04 -0.02 1.84 16 12 C -0.12 -1.92 2.38 -90.50 -0.22 -2.13 16 13 H 0.07 1.21 8.14 -51.93 -0.42 0.79 16 14 C -0.10 -1.64 5.17 -26.69 -0.14 -1.78 16 15 C -0.14 -2.65 6.08 -26.61 -0.16 -2.82 16 16 C 0.17 3.97 5.30 -3.71 -0.02 3.96 16 17 N -0.59 -14.40 2.99 -172.33 -0.52 -14.92 16 18 C -0.25 -6.80 9.58 -15.06 -0.14 -6.95 16 19 H 0.06 1.65 7.88 -52.49 -0.41 1.23 16 20 C 0.00 0.08 4.92 -17.43 -0.09 -0.01 16 21 N -0.90 -25.89 11.20 55.49 0.62 -25.26 16 22 Si 0.90 21.30 29.59 -169.99 -5.03 16.27 16 23 H -0.28 -6.57 7.11 56.52 0.40 -6.17 16 24 H -0.29 -6.93 7.11 56.52 0.40 -6.53 16 25 H -0.28 -6.63 7.11 56.52 0.40 -6.22 16 26 C 0.15 3.08 5.60 -3.72 -0.02 3.06 16 27 H 0.05 0.33 8.14 -51.93 -0.42 -0.09 16 28 H 0.05 0.30 8.14 -51.93 -0.42 -0.12 16 29 H 0.05 0.33 8.14 -51.93 -0.42 -0.10 16 30 H 0.07 0.46 8.14 -51.92 -0.42 0.04 16 31 H 0.05 0.34 8.14 -51.93 -0.42 -0.09 16 32 H 0.05 0.30 8.14 -51.93 -0.42 -0.12 16 33 H 0.06 0.36 6.57 -51.93 -0.34 0.02 16 34 H 0.06 0.47 8.14 -51.93 -0.42 0.05 16 35 H 0.06 0.47 8.14 -51.93 -0.42 0.05 16 36 H 0.06 0.45 6.57 -51.93 -0.34 0.11 16 37 H 0.06 0.45 8.14 -51.93 -0.42 0.03 16 38 H 0.07 0.74 8.10 -51.93 -0.42 0.32 16 39 H 0.07 0.72 8.10 -51.93 -0.42 0.29 16 40 H 0.09 0.71 8.14 -51.93 -0.42 0.29 16 41 H 0.09 0.78 8.14 -51.93 -0.42 0.36 16 42 H 0.40 4.68 7.70 -40.82 -0.31 4.37 16 43 H 0.06 1.02 8.14 -51.93 -0.42 0.60 16 44 H 0.06 0.88 8.14 -51.93 -0.42 0.46 16 45 H 0.06 0.95 8.14 -51.93 -0.42 0.52 16 46 H 0.05 0.68 8.14 -51.93 -0.42 0.26 16 47 H 0.05 1.03 8.14 -51.93 -0.42 0.61 16 48 H 0.05 0.85 8.14 -51.93 -0.42 0.42 16 49 H 0.09 2.26 6.06 -51.93 -0.31 1.95 16 50 H 0.02 0.44 8.14 -51.93 -0.42 0.01 16 51 H 0.25 7.09 8.31 -40.82 -0.34 6.75 16 52 H 0.05 0.95 7.13 -51.93 -0.37 0.58 16 53 H 0.02 0.38 8.14 -51.93 -0.42 -0.04 16 LS Contribution 408.50 15.07 6.16 6.16 Total: -1.00 -30.59 408.50 -10.55 -41.14 By element: Atomic # 1 Polarization: 11.15 SS G_CDS: -10.53 Total: 0.63 kcal Atomic # 6 Polarization: -3.76 SS G_CDS: -1.02 Total: -4.78 kcal Atomic # 7 Polarization: -49.82 SS G_CDS: -0.22 Total: -50.04 kcal Atomic # 8 Polarization: -9.46 SS G_CDS: 0.09 Total: -9.37 kcal Atomic # 14 Polarization: 21.30 SS G_CDS: -5.03 Total: 16.27 kcal Total LS contribution 6.16 Total: 6.16 kcal Total: -30.59 -10.55 -41.14 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. ZINC000412116527.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 -28.715 kcal (2) G-P(sol) polarization free energy of solvation -30.591 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -59.306 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.546 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -41.138 kcal (6) G-S(sol) free energy of system = (1) + (5) -69.852 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.80 seconds