Wall clock time and date at job start Sat Apr 11 2020 06:11:30 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 1.52999 * 1 3 3 O 1.42898 * 109.47179 * 2 1 4 4 C 1.42898 * 113.99958 * 179.97438 * 3 2 1 5 5 H 1.09003 * 112.87285 * 21.77094 * 4 3 2 6 6 C 1.53885 * 113.64109 * 250.48861 * 4 3 2 7 7 C 1.53885 * 87.18373 * 220.40237 * 6 4 3 8 8 H 1.08999 * 113.64103 * 270.41425 * 7 6 4 9 9 N 1.46498 * 113.63943 * 139.51169 * 7 6 4 10 10 C 1.34779 * 119.99978 * 104.50812 * 9 7 6 11 11 O 1.21279 * 119.99890 * 359.97438 * 10 9 7 12 12 C 1.50698 * 120.00151 * 179.97438 * 10 9 7 13 13 H 1.09000 * 109.46862 * 39.99824 * 12 10 9 14 14 N 1.46901 * 109.47246 * 159.99938 * 12 10 9 15 15 C 1.53006 * 109.46914 * 279.99876 * 12 10 9 16 16 C 1.52999 * 109.46626 * 174.99639 * 15 12 10 17 17 C 1.53006 * 109.47000 * 180.02562 * 16 15 12 18 18 C 1.50699 * 109.47240 * 180.02562 * 17 16 15 19 19 H 1.08003 * 119.99963 * 0.02562 * 18 17 16 20 20 C 1.37873 * 119.99861 * 180.02562 * 18 17 16 21 21 N 1.31522 * 120.00244 * 359.97438 * 20 18 17 22 22 Si 1.86803 * 119.99980 * 180.02562 * 20 18 17 23 23 H 1.48498 * 109.46946 * 59.99897 * 22 20 18 24 24 H 1.48506 * 109.46938 * 179.97438 * 22 20 18 25 25 H 1.48500 * 109.46921 * 299.99580 * 22 20 18 26 26 C 1.53192 * 86.91331 * 25.00537 * 7 6 4 27 27 C 1.53853 * 114.62444 * 218.80891 * 26 7 6 28 28 C 1.55438 * 102.05354 * 208.57647 * 27 26 7 29 29 C 1.55001 * 101.01137 * 33.66484 * 28 27 26 30 30 O 1.42619 * 115.40499 * 91.98017 * 26 7 6 31 31 H 1.09000 * 109.47345 * 300.00510 * 1 2 3 32 32 H 1.09000 * 109.46673 * 60.00767 * 1 2 3 33 33 H 1.08999 * 109.47273 * 180.02562 * 1 2 3 34 34 H 1.09001 * 109.47843 * 239.99343 * 2 1 3 35 35 H 1.09007 * 109.47094 * 119.99238 * 2 1 3 36 36 H 1.08999 * 113.59628 * 105.82759 * 6 4 3 37 37 H 1.08999 * 113.59951 * 334.97912 * 6 4 3 38 38 H 0.96996 * 120.00421 * 284.50120 * 9 7 6 39 39 H 1.00906 * 110.99754 * 59.99985 * 14 12 10 40 40 H 1.00894 * 110.99732 * 183.95542 * 14 12 10 41 41 H 1.08993 * 109.46955 * 295.00111 * 15 12 10 42 42 H 1.09000 * 109.47050 * 54.99940 * 15 12 10 43 43 H 1.08993 * 109.47839 * 299.99931 * 16 15 12 44 44 H 1.09000 * 109.47160 * 60.00369 * 16 15 12 45 45 H 1.09004 * 109.47107 * 300.00294 * 17 16 15 46 46 H 1.09000 * 109.46866 * 60.00185 * 17 16 15 47 47 H 0.96992 * 120.00038 * 179.97438 * 21 20 18 48 48 H 1.09004 * 110.91464 * 326.76414 * 27 26 7 49 49 H 1.09004 * 110.91904 * 90.38411 * 27 26 7 50 50 H 1.09000 * 111.10908 * 275.73027 * 28 27 26 51 51 H 1.08998 * 111.14964 * 151.61852 * 28 27 26 52 52 H 1.09003 * 110.29966 * 204.94257 * 29 28 27 53 53 H 1.09002 * 110.29782 * 82.79164 * 29 28 27 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 8 2.0063 1.3472 0.0000 4 6 3.4308 1.4601 0.0006 5 1 3.9270 0.5637 -0.3716 6 6 4.0083 1.9783 1.3295 7 6 4.9874 2.8172 0.4894 8 1 5.9169 2.2988 0.2544 9 7 5.2054 4.1670 1.0153 10 6 6.3516 4.4621 1.6600 11 8 7.2023 3.6099 1.8052 12 6 6.5761 5.8507 2.2005 13 1 5.6486 6.2271 2.6318 14 7 7.6170 5.8107 3.2364 15 6 7.0221 6.7741 1.0648 16 6 7.1296 8.2084 1.5863 17 6 7.5749 9.1319 0.4505 18 6 7.6814 10.5446 0.9642 19 1 7.4546 10.7620 1.9975 20 6 8.0684 11.5596 0.1151 21 7 8.3451 11.2947 -1.1432 22 14 8.2012 13.3106 0.7520 23 1 9.1979 13.3632 1.8515 24 1 8.6333 14.2069 -0.3505 25 1 6.8784 13.7537 1.2612 26 6 3.9469 2.7559 -0.6333 27 6 4.5358 2.5881 -2.0447 28 6 3.4630 3.2834 -2.9289 29 6 2.9838 4.4119 -1.9804 30 8 3.0148 3.8349 -0.6632 31 1 -0.3634 0.5139 0.8899 32 1 -0.3633 0.5137 -0.8901 33 1 -0.3634 -1.0276 0.0005 34 1 1.8935 -0.5139 -0.8899 35 1 1.8933 -0.5137 0.8901 36 1 4.4951 1.2057 1.9246 37 1 3.3044 2.5777 1.9069 38 1 4.5249 4.8485 0.8994 39 1 8.4875 5.4649 2.8611 40 1 7.7408 6.7181 3.6598 41 1 7.9935 6.4489 0.6925 42 1 6.2916 6.7350 0.2568 43 1 6.1582 8.5335 1.9586 44 1 7.8601 8.2475 2.3944 45 1 8.5463 8.8070 0.0777 46 1 6.8441 9.0928 -0.3573 47 1 8.6170 12.0088 -1.7406 48 1 5.4970 3.0953 -2.1281 49 1 4.6300 1.5336 -2.3042 50 1 2.6486 2.5998 -3.1685 51 1 3.9069 3.6946 -3.8355 52 1 1.9688 4.7156 -2.2366 53 1 3.6602 5.2649 -2.0358 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 ZINC001578091292.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 06:11:30 Heat of formation + Delta-G solvation = -123.942196 kcal Electronic energy + Delta-G solvation = -30697.356224 eV Core-core repulsion = 26569.019429 eV Total energy + Delta-G solvation = -4128.336796 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 0.68 seconds Orbital eigenvalues (eV) -41.25366 -39.44185 -37.98534 -36.39254 -35.72791 -33.36993 -33.23521 -32.38220 -31.22768 -31.13367 -28.00037 -27.83927 -25.88652 -24.11483 -23.30644 -23.06529 -22.32992 -21.87871 -20.22565 -20.13369 -19.68673 -17.67078 -17.41761 -16.57078 -16.45593 -16.31348 -15.90567 -15.70752 -15.02183 -14.79158 -14.74449 -14.48685 -14.35277 -13.96979 -13.94307 -13.81749 -13.30031 -13.22865 -13.15832 -12.85522 -12.46179 -12.41746 -12.11301 -12.03139 -11.95291 -11.83924 -11.69395 -11.59936 -11.21642 -11.18677 -11.08517 -10.94753 -10.80032 -10.72192 -10.58286 -9.97564 -9.78879 -9.71450 -9.56041 -9.36852 -9.14475 -8.96989 -8.44761 -8.37036 -6.02959 -4.05833 2.73389 2.90871 3.31353 3.35828 3.38243 3.42495 3.50936 4.02047 4.14223 4.30730 4.43088 4.48160 4.58992 4.66602 4.72098 4.74751 4.84553 4.88907 4.92470 4.97534 5.01095 5.15590 5.27405 5.32134 5.32875 5.36485 5.38486 5.42650 5.51070 5.54378 5.56397 5.60970 5.71801 5.76851 5.79197 5.85576 5.89677 5.99676 6.27334 6.39941 6.58756 6.72643 6.74909 7.02916 7.03018 7.20915 7.59909 7.62212 7.64128 7.75680 7.96145 8.32997 8.38276 9.01030 9.58535 11.08191 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.015186 B = 0.002252 C = 0.002083 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1843.414142 B =12430.910415 C =13438.125182 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.151 4.151 2 C 0.052 3.948 3 O -0.355 6.355 4 C 0.065 3.935 5 H 0.095 0.905 6 C -0.165 4.165 7 C 0.125 3.875 8 H 0.121 0.879 9 N -0.712 5.712 10 C 0.526 3.474 11 O -0.538 6.538 12 C 0.075 3.925 13 H 0.099 0.901 14 N -0.830 5.830 15 C -0.145 4.145 16 C -0.109 4.109 17 C 0.023 3.977 18 C -0.522 4.522 19 H 0.054 0.946 20 C 0.056 3.944 21 N -0.896 5.896 22 Si 0.893 3.107 23 H -0.277 1.277 24 H -0.287 1.287 25 H -0.277 1.277 26 C 0.090 3.910 27 C -0.143 4.143 28 C -0.153 4.153 29 C 0.048 3.952 30 O -0.337 6.337 31 H 0.063 0.937 32 H 0.062 0.938 33 H 0.068 0.932 34 H 0.046 0.954 35 H 0.047 0.953 36 H 0.075 0.925 37 H 0.098 0.902 38 H 0.409 0.591 39 H 0.348 0.652 40 H 0.351 0.649 41 H 0.063 0.937 42 H 0.065 0.935 43 H 0.051 0.949 44 H 0.048 0.952 45 H 0.014 0.986 46 H 0.015 0.985 47 H 0.261 0.739 48 H 0.085 0.915 49 H 0.083 0.917 50 H 0.078 0.922 51 H 0.084 0.916 52 H 0.088 0.912 53 H 0.067 0.933 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -13.747 -24.005 -1.611 27.709 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 -0.208 4.208 2 C -0.025 4.025 3 O -0.273 6.273 4 C 0.006 3.994 5 H 0.113 0.887 6 C -0.204 4.204 7 C 0.019 3.981 8 H 0.139 0.861 9 N -0.365 5.365 10 C 0.313 3.687 11 O -0.414 6.414 12 C -0.040 4.040 13 H 0.117 0.883 14 N -0.362 5.362 15 C -0.185 4.185 16 C -0.147 4.147 17 C -0.014 4.014 18 C -0.560 4.560 19 H 0.073 0.927 20 C -0.145 4.145 21 N -0.535 5.535 22 Si 0.720 3.280 23 H -0.202 1.202 24 H -0.213 1.213 25 H -0.202 1.202 26 C 0.049 3.951 27 C -0.181 4.181 28 C -0.190 4.190 29 C -0.028 4.028 30 O -0.255 6.255 31 H 0.082 0.918 32 H 0.081 0.919 33 H 0.087 0.913 34 H 0.064 0.936 35 H 0.066 0.934 36 H 0.094 0.906 37 H 0.117 0.883 38 H 0.245 0.755 39 H 0.162 0.838 40 H 0.166 0.834 41 H 0.082 0.918 42 H 0.084 0.916 43 H 0.070 0.930 44 H 0.067 0.933 45 H 0.032 0.968 46 H 0.033 0.967 47 H 0.071 0.929 48 H 0.104 0.896 49 H 0.102 0.898 50 H 0.097 0.903 51 H 0.103 0.897 52 H 0.106 0.894 53 H 0.085 0.915 Dipole moment (debyes) X Y Z Total from point charges -13.794 -24.813 -1.114 28.411 hybrid contribution 0.514 1.727 -0.677 1.924 sum -13.280 -23.086 -1.791 26.694 Atomic orbital electron populations 1.21726 0.93727 1.02077 1.03245 1.22544 0.95757 0.84326 0.99832 1.88071 1.19277 1.25498 1.94429 1.23921 0.82326 0.96635 0.96534 0.88683 1.23976 0.98754 1.00196 0.97433 1.22510 0.97381 0.84785 0.93474 0.86105 1.45690 1.20115 1.12515 1.58135 1.20776 0.80982 0.90193 0.76753 1.90639 1.43930 1.49686 1.57134 1.21433 0.98069 0.91225 0.93263 0.88288 1.58686 1.11962 1.32588 1.32959 1.22393 1.01841 0.96885 0.97402 1.21654 1.00493 0.92159 1.00368 1.19072 0.96405 0.93192 0.92763 1.21212 1.45718 0.92821 0.96277 0.92727 1.25035 0.95409 0.99149 0.94907 1.69954 1.46401 1.32780 1.04351 0.86652 0.78520 0.84410 0.78383 1.20230 1.21299 1.20214 1.23456 0.89082 0.88069 0.94543 1.23065 0.99660 1.02323 0.93036 1.23242 0.98770 0.98029 0.98974 1.23537 1.02108 0.95689 0.81484 1.88327 1.60172 1.46316 1.30690 0.91773 0.91878 0.91265 0.93596 0.93442 0.90602 0.88330 0.75540 0.83795 0.83389 0.91833 0.91638 0.93015 0.93337 0.96752 0.96651 0.92942 0.89594 0.89826 0.90336 0.89736 0.89352 0.91487 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 12. 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 -0.95 10.28 37.16 0.38 -0.57 16 2 C 0.05 0.38 6.51 37.16 0.24 0.62 16 3 O -0.35 -3.60 10.02 -49.13 -0.49 -4.09 16 4 C 0.07 0.59 3.82 -26.16 -0.10 0.49 16 5 H 0.10 0.66 7.68 -51.93 -0.40 0.26 16 6 C -0.16 -1.67 7.71 -25.81 -0.20 -1.87 16 7 C 0.13 1.36 3.76 -67.37 -0.25 1.11 16 8 H 0.12 1.37 7.52 -51.93 -0.39 0.98 16 9 N -0.71 -8.73 5.35 -53.26 -0.28 -9.01 16 10 C 0.53 7.80 7.08 -10.99 -0.08 7.72 16 11 O -0.54 -9.53 15.89 5.56 0.09 -9.44 16 12 C 0.08 1.08 3.21 -68.86 -0.22 0.86 16 13 H 0.10 1.31 8.14 -51.93 -0.42 0.89 16 14 N -0.83 -12.03 8.94 -5.65 -0.05 -12.08 16 15 C -0.15 -2.36 4.84 -26.73 -0.13 -2.49 16 16 C -0.11 -2.11 4.92 -26.73 -0.13 -2.24 16 17 C 0.02 0.57 4.97 -27.88 -0.14 0.43 16 18 C -0.52 -14.59 9.11 -34.44 -0.31 -14.90 16 19 H 0.05 1.47 7.74 -52.48 -0.41 1.07 16 20 C 0.06 1.60 5.46 -17.82 -0.10 1.51 16 21 N -0.90 -26.78 13.29 55.43 0.74 -26.04 16 22 Si 0.89 21.54 29.54 -169.99 -5.02 16.52 16 23 H -0.28 -6.57 7.11 56.52 0.40 -6.16 16 24 H -0.29 -6.87 7.11 56.52 0.40 -6.47 16 25 H -0.28 -6.54 7.11 56.52 0.40 -6.14 16 26 C 0.09 0.87 1.38 -89.97 -0.12 0.75 16 27 C -0.14 -1.15 6.35 -24.99 -0.16 -1.31 16 28 C -0.15 -1.16 7.16 -24.38 -0.17 -1.33 16 29 C 0.05 0.44 7.79 38.21 0.30 0.74 16 30 O -0.34 -3.76 9.74 -49.13 -0.48 -4.24 16 31 H 0.06 0.44 8.14 -51.93 -0.42 0.02 16 32 H 0.06 0.42 8.14 -51.93 -0.42 0.00 16 33 H 0.07 0.31 8.14 -51.93 -0.42 -0.11 16 34 H 0.05 0.28 8.14 -51.93 -0.42 -0.14 16 35 H 0.05 0.31 8.14 -51.93 -0.42 -0.11 16 36 H 0.08 0.72 8.14 -51.93 -0.42 0.30 16 37 H 0.10 1.12 8.14 -51.93 -0.42 0.70 16 38 H 0.41 4.71 7.82 -40.82 -0.32 4.39 16 39 H 0.35 5.19 8.58 -39.29 -0.34 4.85 16 40 H 0.35 4.77 7.55 -39.29 -0.30 4.48 16 41 H 0.06 1.10 8.14 -51.93 -0.42 0.67 16 42 H 0.06 1.03 8.14 -51.93 -0.42 0.61 16 43 H 0.05 0.97 8.14 -51.93 -0.42 0.55 16 44 H 0.05 0.91 6.87 -51.93 -0.36 0.55 16 45 H 0.01 0.38 8.14 -51.93 -0.42 -0.04 16 46 H 0.02 0.41 8.14 -51.93 -0.42 -0.02 16 47 H 0.26 7.38 8.31 -40.82 -0.34 7.04 16 48 H 0.09 0.74 8.11 -51.93 -0.42 0.32 16 49 H 0.08 0.54 7.79 -51.93 -0.40 0.13 16 50 H 0.08 0.57 8.14 -51.93 -0.42 0.15 16 51 H 0.08 0.56 8.14 -51.93 -0.42 0.14 16 52 H 0.09 0.73 8.14 -51.93 -0.42 0.30 16 53 H 0.07 0.63 8.14 -51.93 -0.42 0.21 16 LS Contribution 424.81 15.07 6.40 6.40 Total: -1.00 -33.11 424.81 -9.95 -43.06 By element: Atomic # 1 Polarization: 19.06 SS G_CDS: -9.65 Total: 9.40 kcal Atomic # 6 Polarization: -9.29 SS G_CDS: -1.20 Total: -10.48 kcal Atomic # 7 Polarization: -47.53 SS G_CDS: 0.40 Total: -47.13 kcal Atomic # 8 Polarization: -16.89 SS G_CDS: -0.88 Total: -17.77 kcal Atomic # 14 Polarization: 21.54 SS G_CDS: -5.02 Total: 16.52 kcal Total LS contribution 6.40 Total: 6.40 kcal Total: -33.11 -9.95 -43.06 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. ZINC001578091292.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 -80.883 kcal (2) G-P(sol) polarization free energy of solvation -33.108 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -113.991 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.951 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -43.059 kcal (6) G-S(sol) free energy of system = (1) + (5) -123.942 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.69 seconds