Wall clock time and date at job start Tue Mar 31 2020 21:30:58 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 1.30999 * 1 3 3 C 1.50703 * 120.00156 * 2 1 4 4 C 1.50698 * 119.99805 * 179.97438 * 2 1 3 5 5 H 1.09003 * 110.41970 * 128.42502 * 4 2 1 6 6 O 1.44787 * 110.48803 * 5.97220 * 4 2 1 7 7 C 1.44422 * 105.29708 * 200.67189 * 6 4 2 8 8 C 1.54487 * 104.80402 * 40.54545 * 7 6 4 9 9 C 1.54474 * 110.37516 * 250.73708 * 4 2 1 10 10 H 1.09007 * 110.51117 * 261.58897 * 9 4 2 11 11 C 1.50700 * 110.51446 * 24.16431 * 9 4 2 12 12 O 1.21279 * 119.99688 * 48.77430 * 11 9 4 13 13 N 1.34777 * 119.99916 * 228.50056 * 11 9 4 14 14 C 1.48146 * 127.84129 * 354.59903 * 13 11 9 15 15 C 1.54784 * 104.41908 * 140.36611 * 14 13 11 16 16 H 1.09004 * 110.19945 * 142.93696 * 15 14 13 17 17 C 1.53001 * 110.61260 * 265.17544 * 15 14 13 18 18 C 1.54291 * 104.92140 * 24.16402 * 15 14 13 19 19 C 1.52995 * 110.43030 * 240.89041 * 18 15 14 20 20 C 1.53001 * 110.34036 * 118.67941 * 18 15 14 21 21 N 1.46500 * 109.46881 * 183.00950 * 20 18 15 22 22 C 1.36939 * 120.00178 * 179.97438 * 21 20 18 23 23 H 1.07995 * 119.99878 * 359.97438 * 22 21 20 24 24 C 1.38812 * 120.00066 * 179.97438 * 22 21 20 25 25 N 1.31623 * 120.00048 * 0.02562 * 24 22 21 26 26 Si 1.86797 * 120.00149 * 179.97438 * 24 22 21 27 27 H 1.48502 * 109.47026 * 59.99991 * 26 24 22 28 28 H 1.48496 * 109.47229 * 179.97438 * 26 24 22 29 29 H 1.48499 * 109.47073 * 300.00176 * 26 24 22 30 30 C 1.48148 * 127.83260 * 174.91589 * 13 11 9 31 31 H 1.07997 * 120.00406 * 180.02562 * 1 2 3 32 32 H 1.08001 * 119.99915 * 0.02562 * 1 2 3 33 33 H 1.08995 * 109.46706 * 274.86778 * 3 2 1 34 34 H 1.08998 * 109.46860 * 34.86730 * 3 2 1 35 35 H 1.09005 * 109.46803 * 154.86687 * 3 2 1 36 36 H 1.09000 * 110.37366 * 281.71743 * 7 6 4 37 37 H 1.08999 * 110.46896 * 159.42266 * 7 6 4 38 38 H 1.09004 * 110.50999 * 217.37817 * 8 7 6 39 39 H 1.08999 * 110.50953 * 94.66269 * 8 7 6 40 40 H 1.09006 * 110.40142 * 259.19900 * 14 13 11 41 41 H 1.08995 * 110.40579 * 21.62603 * 14 13 11 42 42 H 1.09007 * 109.47082 * 176.00086 * 17 15 14 43 43 H 1.08997 * 109.47180 * 295.99837 * 17 15 14 44 44 H 1.08999 * 109.46662 * 56.00542 * 17 15 14 45 45 H 1.09004 * 109.47128 * 177.04323 * 19 18 15 46 46 H 1.08999 * 109.47218 * 297.04177 * 19 18 15 47 47 H 1.09006 * 109.47001 * 57.04344 * 19 18 15 48 48 H 1.08996 * 109.47158 * 303.00269 * 20 18 15 49 49 H 1.08999 * 109.47220 * 63.00984 * 20 18 15 50 50 H 0.97009 * 120.00105 * 359.97438 * 21 20 18 51 51 H 0.97004 * 120.00200 * 180.02562 * 25 24 22 52 52 H 1.09003 * 110.40927 * 338.36711 * 30 13 11 53 53 H 1.08995 * 110.40880 * 100.80255 * 30 13 11 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 1.3100 0.0000 0.0000 3 6 2.0635 1.3051 0.0000 4 6 2.0634 -1.3051 0.0006 5 1 2.8034 -1.3174 -0.7997 6 8 1.1486 -2.4185 -0.1400 7 6 1.8669 -3.5673 0.3599 8 6 2.6154 -3.0519 1.6092 9 6 2.7461 -1.5314 1.3677 10 1 3.7957 -1.2407 1.3233 11 6 2.0316 -0.7618 2.4486 12 8 0.8249 -0.8328 2.5469 13 7 2.7342 0.0010 3.3093 14 6 4.2063 0.1231 3.4226 15 6 4.4489 1.6286 3.6882 16 1 5.2742 1.7591 4.3882 17 6 4.7407 2.3662 2.3799 18 6 3.1324 2.1395 4.3099 19 6 2.5141 3.2285 3.4310 20 6 3.3833 2.6749 5.7210 21 7 2.1116 3.0880 6.3198 22 6 2.0874 3.6025 7.5886 23 1 3.0056 3.7034 8.1480 24 6 0.8825 3.9944 8.1557 25 7 -0.2367 3.8710 7.4741 26 14 0.8493 4.6956 9.8868 27 1 1.6865 5.9209 9.9406 28 1 -0.5483 5.0350 10.2566 29 1 1.3833 3.6890 10.8389 30 6 2.2096 0.9028 4.3612 31 1 -0.5401 -0.9352 0.0004 32 1 -0.5400 0.9353 -0.0004 33 1 2.1697 1.6633 -1.0239 34 1 1.5150 2.0413 0.5875 35 1 3.0510 1.1545 0.4365 36 1 2.5760 -3.9257 -0.3863 37 1 1.1724 -4.3613 0.6344 38 1 3.6003 -3.5133 1.6817 39 1 2.0339 -3.2469 2.5103 40 1 4.5744 -0.4764 4.2552 41 1 4.6856 -0.1818 2.4924 42 1 4.8381 3.4336 2.5785 43 1 5.6693 1.9904 1.9503 44 1 3.9226 2.2002 1.6790 45 1 1.5603 3.5408 3.8564 46 1 3.1882 4.0837 3.3839 47 1 2.3531 2.8369 2.4265 48 1 3.8351 1.8930 6.3313 49 1 4.0562 3.5309 5.6706 50 1 1.2868 2.9970 5.8174 51 1 -1.0786 4.1452 7.8702 52 1 1.1808 1.1869 4.1399 53 1 2.2707 0.4233 5.3381 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 ZINC001182870018.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 21:30:58 Heat of formation + Delta-G solvation = -40.961199 kcal Electronic energy + Delta-G solvation = -31855.559430 eV Core-core repulsion = 27921.277012 eV Total energy + Delta-G solvation = -3934.282418 eV No. of doubly occupied orbitals = 65 Molecular weight (most abundant/longest-lived isotopes) = 336.220 amu Computer time = 1.11 seconds Orbital eigenvalues (eV) -40.88806 -39.55180 -37.60310 -35.03860 -34.76420 -33.15575 -32.36371 -31.48069 -29.66142 -28.90854 -27.65763 -26.89729 -25.80533 -25.42455 -23.71796 -23.17916 -22.03298 -21.13346 -19.48635 -18.61588 -18.19151 -17.53914 -16.95771 -16.21198 -16.08554 -15.69281 -15.57369 -14.94232 -14.51254 -14.30729 -14.18709 -13.97487 -13.79795 -13.45860 -13.30530 -13.21107 -13.06236 -12.88497 -12.53759 -12.41731 -12.19692 -12.08753 -11.91480 -11.81352 -11.53145 -11.41259 -11.36828 -11.23839 -11.06358 -10.98338 -10.92106 -10.78220 -10.41096 -10.31197 -10.19520 -10.02734 -9.87084 -9.60695 -9.53686 -8.89762 -8.85522 -8.41630 -6.89955 -5.73770 -3.02742 2.33909 2.75156 3.04744 3.45284 3.49641 3.51032 3.62667 4.24068 4.35454 4.54276 4.58995 4.60440 4.77364 4.79855 4.87193 4.91977 5.02907 5.05210 5.17055 5.33489 5.33528 5.39845 5.42984 5.44441 5.47502 5.50590 5.54388 5.58942 5.63222 5.66487 5.73280 5.83019 5.89177 5.96461 6.00212 6.11317 6.12337 6.13849 6.23105 6.27314 6.30912 6.45870 6.50584 6.62368 6.69973 6.74826 6.78712 6.88172 7.04597 7.71050 7.75254 8.37483 8.44656 9.55873 10.13528 10.47905 11.48729 Molecular weight = 336.22amu Principal moments of inertia in cm(-1) A = 0.016645 B = 0.003130 C = 0.003023 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1681.788716 B = 8942.432335 C = 9261.032513 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.129 4.129 2 C -0.158 4.158 3 C -0.112 4.112 4 C 0.137 3.863 5 H 0.081 0.919 6 O -0.358 6.358 7 C 0.048 3.952 8 C -0.139 4.139 9 C -0.136 4.136 10 H 0.098 0.902 11 C 0.545 3.455 12 O -0.519 6.519 13 N -0.621 5.621 14 C 0.103 3.897 15 C -0.097 4.097 16 H 0.086 0.914 17 C -0.147 4.147 18 C -0.073 4.073 19 C -0.132 4.132 20 C 0.168 3.832 21 N -0.730 5.730 22 C -0.242 4.242 23 H 0.069 0.931 24 C -0.012 4.012 25 N -0.931 5.931 26 Si 0.906 3.094 27 H -0.287 1.287 28 H -0.291 1.291 29 H -0.287 1.287 30 C 0.122 3.878 31 H 0.107 0.893 32 H 0.093 0.907 33 H 0.064 0.936 34 H 0.068 0.932 35 H 0.061 0.939 36 H 0.060 0.940 37 H 0.094 0.906 38 H 0.084 0.916 39 H 0.082 0.918 40 H 0.071 0.929 41 H 0.074 0.926 42 H 0.063 0.937 43 H 0.048 0.952 44 H 0.062 0.938 45 H 0.064 0.936 46 H 0.055 0.945 47 H 0.049 0.951 48 H 0.019 0.981 49 H 0.022 0.978 50 H 0.385 0.615 51 H 0.256 0.744 52 H 0.083 0.917 53 H 0.075 0.925 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 11.989 -11.811 -18.092 24.709 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 -0.166 4.166 2 C -0.159 4.159 3 C -0.169 4.169 4 C 0.079 3.921 5 H 0.098 0.902 6 O -0.276 6.276 7 C -0.029 4.029 8 C -0.177 4.177 9 C -0.157 4.157 10 H 0.116 0.884 11 C 0.332 3.668 12 O -0.394 6.394 13 N -0.355 5.355 14 C -0.020 4.020 15 C -0.117 4.117 16 H 0.104 0.896 17 C -0.204 4.204 18 C -0.075 4.075 19 C -0.189 4.189 20 C 0.040 3.960 21 N -0.375 5.375 22 C -0.373 4.373 23 H 0.087 0.913 24 C -0.208 4.208 25 N -0.580 5.580 26 Si 0.737 3.263 27 H -0.213 1.213 28 H -0.217 1.217 29 H -0.213 1.213 30 C 0.001 3.999 31 H 0.125 0.875 32 H 0.112 0.888 33 H 0.083 0.917 34 H 0.087 0.913 35 H 0.080 0.920 36 H 0.078 0.922 37 H 0.112 0.888 38 H 0.102 0.898 39 H 0.101 0.899 40 H 0.090 0.910 41 H 0.092 0.908 42 H 0.082 0.918 43 H 0.067 0.933 44 H 0.080 0.920 45 H 0.083 0.917 46 H 0.074 0.926 47 H 0.068 0.932 48 H 0.037 0.963 49 H 0.039 0.961 50 H 0.219 0.781 51 H 0.066 0.934 52 H 0.101 0.899 53 H 0.093 0.907 Dipole moment (debyes) X Y Z Total from point charges 11.065 -11.854 -18.036 24.254 hybrid contribution 0.054 0.368 1.147 1.206 sum 11.119 -11.487 -16.889 23.255 Atomic orbital electron populations 1.23608 0.95283 1.01940 0.95777 1.21245 0.95853 0.93282 1.05472 1.20831 0.99975 0.94322 1.01733 1.21596 0.90363 0.86585 0.93517 0.90185 1.89221 1.37654 1.16562 1.84202 1.23356 0.95792 0.89935 0.93800 1.22906 1.01856 0.92459 1.00521 1.22736 1.01089 0.96467 0.95432 0.88353 1.19596 0.87176 0.78902 0.81095 1.90749 1.13704 1.62954 1.72014 1.49043 1.07303 1.44342 1.34826 1.22585 0.81246 0.96923 1.01253 1.22190 0.98147 0.93523 0.97825 0.89561 1.22008 1.00793 1.00820 0.96754 1.21684 0.93777 0.94945 0.97050 1.21884 1.01501 0.97336 0.98192 1.20708 0.90270 0.96001 0.88993 1.42378 1.03480 1.75960 1.15662 1.19155 0.93158 1.33788 0.91174 0.91331 1.24728 0.95471 1.02199 0.98409 1.69649 0.97560 1.53546 1.37215 0.86288 0.76482 0.78897 0.84612 1.21346 1.21721 1.21329 1.22416 0.98874 0.88575 0.90077 0.87471 0.88846 0.91748 0.91308 0.92042 0.92153 0.88799 0.89784 0.89904 0.91046 0.90808 0.91847 0.93270 0.91956 0.91680 0.92583 0.93199 0.96338 0.96073 0.78064 0.93443 0.89869 0.90712 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 14. 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 -0.13 -1.81 12.36 29.01 0.36 -1.45 16 2 C -0.16 -2.00 3.62 -101.07 -0.37 -2.36 16 3 C -0.11 -1.21 9.54 36.01 0.34 -0.86 16 4 C 0.14 1.54 3.44 -27.11 -0.09 1.45 16 5 H 0.08 0.72 8.14 -51.93 -0.42 0.30 16 6 O -0.36 -4.50 9.84 -35.23 -0.35 -4.85 16 7 C 0.05 0.44 7.63 37.94 0.29 0.73 16 8 C -0.14 -1.28 6.72 -25.16 -0.17 -1.45 16 9 C -0.14 -1.44 3.09 -90.21 -0.28 -1.72 16 10 H 0.10 0.80 6.07 -51.93 -0.32 0.49 16 11 C 0.54 7.89 5.24 -10.99 -0.06 7.84 16 12 O -0.52 -9.75 15.10 5.56 0.08 -9.66 16 13 N -0.62 -8.50 3.31 -169.06 -0.56 -9.06 16 14 C 0.10 1.07 6.51 -2.20 -0.01 1.06 16 15 C -0.10 -1.10 3.30 -89.00 -0.29 -1.39 16 16 H 0.09 0.93 7.71 -51.93 -0.40 0.53 16 17 C -0.15 -1.42 7.95 37.16 0.30 -1.13 16 18 C -0.07 -1.12 0.73 -153.10 -0.11 -1.23 16 19 C -0.13 -2.05 7.08 37.16 0.26 -1.78 16 20 C 0.17 3.22 4.85 -4.04 -0.02 3.20 16 21 N -0.73 -18.00 5.12 -59.91 -0.31 -18.31 16 22 C -0.24 -6.69 9.99 -15.06 -0.15 -6.85 16 23 H 0.07 1.84 7.83 -52.49 -0.41 1.43 16 24 C -0.01 -0.34 5.50 -17.43 -0.10 -0.44 16 25 N -0.93 -28.31 13.06 55.49 0.72 -27.58 16 26 Si 0.91 22.49 29.55 -169.99 -5.02 17.46 16 27 H -0.29 -6.99 7.11 56.52 0.40 -6.58 16 28 H -0.29 -7.31 7.11 56.52 0.40 -6.91 16 29 H -0.29 -7.00 7.11 56.52 0.40 -6.60 16 30 C 0.12 2.05 5.53 -2.41 -0.01 2.04 16 31 H 0.11 1.62 6.91 -52.49 -0.36 1.26 16 32 H 0.09 1.24 8.05 -52.49 -0.42 0.82 16 33 H 0.06 0.59 8.14 -51.93 -0.42 0.16 16 34 H 0.07 0.83 7.24 -51.93 -0.38 0.46 16 35 H 0.06 0.60 5.98 -51.93 -0.31 0.29 16 36 H 0.06 0.41 8.14 -51.93 -0.42 -0.01 16 37 H 0.09 0.78 8.14 -51.93 -0.42 0.35 16 38 H 0.08 0.54 8.14 -51.93 -0.42 0.11 16 39 H 0.08 0.92 7.73 -51.93 -0.40 0.52 16 40 H 0.07 0.70 8.14 -51.93 -0.42 0.28 16 41 H 0.07 0.59 6.02 -51.93 -0.31 0.27 16 42 H 0.06 0.65 6.91 -51.93 -0.36 0.29 16 43 H 0.05 0.38 8.14 -51.93 -0.42 -0.04 16 44 H 0.06 0.63 4.49 -51.93 -0.23 0.39 16 45 H 0.06 1.21 6.99 -51.93 -0.36 0.85 16 46 H 0.06 0.82 6.99 -51.93 -0.36 0.46 16 47 H 0.05 0.70 5.76 -51.93 -0.30 0.40 16 48 H 0.02 0.36 8.14 -51.93 -0.42 -0.06 16 49 H 0.02 0.41 8.14 -51.93 -0.42 -0.01 16 50 H 0.38 10.09 6.27 -40.82 -0.26 9.84 16 51 H 0.26 7.57 8.31 -40.82 -0.34 7.24 16 52 H 0.08 1.64 7.65 -51.93 -0.40 1.24 16 53 H 0.07 1.37 7.86 -51.93 -0.41 0.97 16 LS Contribution 398.46 15.07 6.00 6.00 Total: -1.00 -33.17 398.46 -8.47 -41.63 By element: Atomic # 1 Polarization: 17.65 SS G_CDS: -8.93 Total: 8.72 kcal Atomic # 6 Polarization: -4.24 SS G_CDS: -0.11 Total: -4.36 kcal Atomic # 7 Polarization: -54.81 SS G_CDS: -0.14 Total: -54.95 kcal Atomic # 8 Polarization: -14.25 SS G_CDS: -0.26 Total: -14.51 kcal Atomic # 14 Polarization: 22.49 SS G_CDS: -5.02 Total: 17.46 kcal Total LS contribution 6.00 Total: 6.00 kcal Total: -33.17 -8.47 -41.63 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. ZINC001182870018.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 0.674 kcal (2) G-P(sol) polarization free energy of solvation -33.166 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -32.493 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.469 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -41.635 kcal (6) G-S(sol) free energy of system = (1) + (5) -40.961 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.12 seconds