Wall clock time and date at job start Sat Apr 11 2020 06:11:27 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 1.52994 * 1 3 3 H 1.09000 * 109.47570 * 2 1 4 4 C 1.50700 * 109.47448 * 240.00048 * 2 1 3 5 5 H 1.08007 * 119.99963 * 245.30117 * 4 2 1 6 6 C 1.37875 * 119.99916 * 65.30153 * 4 2 1 7 7 N 1.31505 * 120.00080 * 6.82945 * 6 4 2 8 8 Si 1.86807 * 119.99718 * 186.83394 * 6 4 2 9 9 H 1.48498 * 109.47025 * 94.98873 * 8 6 4 10 10 H 1.48505 * 109.46891 * 214.98940 * 8 6 4 11 11 H 1.48491 * 109.47125 * 334.98524 * 8 6 4 12 12 C 1.50701 * 109.47022 * 120.00010 * 2 1 3 13 13 O 1.21280 * 120.00103 * 111.98146 * 12 2 1 14 14 N 1.34774 * 119.99923 * 291.97743 * 12 2 1 15 15 C 1.47026 * 125.64961 * 355.71108 * 14 12 2 16 16 C 1.54322 * 107.27019 * 178.90136 * 15 14 12 17 17 H 1.09007 * 110.72029 * 219.26649 * 16 15 14 18 18 N 1.46508 * 110.71781 * 96.17565 * 16 15 14 19 19 C 1.34774 * 120.00135 * 86.45359 * 18 16 15 20 20 O 1.21516 * 119.99888 * 359.97438 * 19 18 16 21 21 O 1.34636 * 120.00080 * 180.02562 * 19 18 16 22 22 C 1.45194 * 117.00401 * 179.97438 * 21 19 18 23 23 C 1.53002 * 109.46983 * 59.99322 * 22 21 19 24 24 C 1.52996 * 109.47565 * 179.97438 * 22 21 19 25 25 C 1.53002 * 109.46950 * 299.99850 * 22 21 19 26 26 C 1.55152 * 102.94744 * 337.80949 * 16 15 14 27 27 C 1.52996 * 111.00936 * 153.57717 * 26 16 15 28 28 C 1.53002 * 111.00468 * 277.42793 * 26 16 15 29 29 C 1.47429 * 125.65206 * 175.66810 * 14 12 2 30 30 H 1.08997 * 109.47570 * 292.59244 * 1 2 3 31 31 H 1.09007 * 109.47146 * 52.59154 * 1 2 3 32 32 H 1.08994 * 109.47047 * 172.58789 * 1 2 3 33 33 H 0.97008 * 120.00144 * 180.02562 * 7 6 4 34 34 H 1.09005 * 109.87688 * 59.48522 * 15 14 12 35 35 H 1.08995 * 109.88691 * 298.32410 * 15 14 12 36 36 H 0.97002 * 119.99552 * 266.45062 * 18 16 15 37 37 H 1.09007 * 109.47048 * 60.00480 * 23 22 21 38 38 H 1.08998 * 109.47475 * 180.02562 * 23 22 21 39 39 H 1.09000 * 109.47448 * 300.00322 * 23 22 21 40 40 H 1.08996 * 109.46824 * 59.99850 * 24 22 21 41 41 H 1.08999 * 109.47360 * 179.97438 * 24 22 21 42 42 H 1.08999 * 109.47297 * 300.00136 * 24 22 21 43 43 H 1.09000 * 109.47214 * 59.99841 * 25 22 21 44 44 H 1.08998 * 109.46721 * 179.97438 * 25 22 21 45 45 H 1.08996 * 109.47061 * 299.99919 * 25 22 21 46 46 H 1.09003 * 109.47122 * 59.99696 * 27 26 16 47 47 H 1.08996 * 109.47595 * 180.02562 * 27 26 16 48 48 H 1.09006 * 109.46931 * 300.00148 * 27 26 16 49 49 H 1.09008 * 109.46926 * 59.99676 * 28 26 16 50 50 H 1.08996 * 109.47235 * 179.97438 * 28 26 16 51 51 H 1.08995 * 109.47120 * 300.00167 * 28 26 16 52 52 H 1.08997 * 110.36138 * 323.00908 * 29 14 12 53 53 H 1.08999 * 110.36593 * 85.21689 * 29 14 12 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 1.5299 0.0000 0.0000 3 1 1.8933 1.0276 0.0000 4 6 2.0323 -0.7104 -1.2304 5 1 2.5809 -1.6357 -1.1336 6 6 1.7918 -0.1790 -2.4797 7 7 1.2439 1.0110 -2.5938 8 14 2.2441 -1.1497 -4.0104 9 1 1.0556 -1.8997 -4.4901 10 1 2.7018 -0.2164 -5.0710 11 1 3.3346 -2.1042 -3.6869 12 6 2.0322 -0.7104 1.2305 13 8 2.6050 -1.7742 1.1252 14 7 1.8450 -0.1635 2.4480 15 6 1.2500 1.1546 2.7129 16 6 1.2148 1.3418 4.2444 17 1 0.2906 1.8313 4.5519 18 7 2.3796 2.1047 4.7002 19 6 2.3423 3.4519 4.7068 20 8 1.3428 4.0339 4.3342 21 8 3.4130 4.1529 5.1252 22 6 3.3022 5.6004 5.1047 23 6 2.1467 6.0363 6.0079 24 6 4.6065 6.2191 5.6116 25 6 3.0363 6.0714 3.6735 26 6 1.2713 -0.1153 4.7741 27 6 1.8854 -0.1664 6.1745 28 6 -0.1176 -0.7571 4.7631 29 6 2.2021 -0.7882 3.7347 30 1 -0.3634 0.3948 0.9488 31 1 -0.3634 0.6243 -0.8163 32 1 -0.3633 -1.0190 -0.1326 33 1 1.0743 1.3847 -3.4728 34 1 0.2372 1.1915 2.3115 35 1 1.8600 1.9350 2.2580 36 1 3.1776 1.6400 4.9972 37 1 2.3361 5.7008 7.0277 38 1 2.0632 7.1230 5.9923 39 1 1.2173 5.5956 5.6472 40 1 5.4298 5.9085 4.9684 41 1 4.5235 7.3058 5.5958 42 1 4.7956 5.8835 6.6313 43 1 2.1069 5.6307 3.3127 44 1 2.9527 7.1580 3.6582 45 1 3.8594 5.7608 3.0300 46 1 1.2817 0.4308 6.8580 47 1 1.9133 -1.1993 6.5216 48 1 2.8991 0.2330 6.1415 49 1 -0.5036 -0.7705 3.7438 50 1 -0.0491 -1.7780 5.1388 51 1 -0.7895 -0.1801 5.3984 52 1 2.0177 -1.8619 3.6992 53 1 3.2469 -0.5913 3.9750 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 ZINC000927902158.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 06:11:27 Heat of formation + Delta-G solvation = -123.040009 kcal Electronic energy + Delta-G solvation = -32040.091839 eV Core-core repulsion = 27911.794165 eV Total energy + Delta-G solvation = -4128.297674 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 0.76 seconds Orbital eigenvalues (eV) -41.05470 -39.99202 -37.96303 -36.85122 -34.47246 -33.77952 -33.57751 -33.12897 -30.48266 -28.84219 -27.59962 -27.50375 -27.35697 -26.35085 -25.10570 -23.77179 -22.27890 -21.47319 -20.28717 -19.36989 -18.55293 -18.17283 -16.87677 -16.33790 -16.21299 -15.80361 -15.72708 -15.12736 -14.94804 -14.75321 -14.47402 -14.16657 -13.92371 -13.71770 -13.33236 -13.19161 -13.03012 -12.69671 -12.67527 -12.41284 -12.35656 -12.24823 -12.08124 -12.03824 -12.00189 -11.91007 -11.60344 -11.46134 -11.39108 -11.13206 -11.04513 -10.95467 -10.79120 -10.70793 -10.50964 -10.48264 -10.26258 -10.10641 -9.92254 -9.30545 -8.96473 -8.52208 -8.34958 -8.05052 -6.02566 -4.02292 2.05275 2.79192 3.35225 3.41352 3.47464 3.62867 3.69397 4.01521 4.13735 4.48319 4.50863 4.54583 4.59320 4.69048 4.73593 5.01135 5.10834 5.27212 5.29016 5.32945 5.36966 5.44110 5.47391 5.49907 5.52472 5.59017 5.61846 5.71463 5.71701 5.79563 5.80635 5.85731 5.88985 5.96945 6.01572 6.10575 6.14137 6.20836 6.22935 6.36083 6.45012 6.66581 6.81269 6.86098 6.96812 7.33551 7.49005 7.68445 8.00337 8.09994 8.32388 8.41746 9.06150 9.22019 9.62008 11.07879 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.011128 B = 0.003346 C = 0.002795 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2515.503089 B = 8365.861400 C =10015.811889 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.127 4.127 2 C 0.034 3.966 3 H 0.054 0.946 4 C -0.504 4.504 5 H 0.073 0.927 6 C 0.061 3.939 7 N -0.894 5.894 8 Si 0.897 3.103 9 H -0.281 1.281 10 H -0.287 1.287 11 H -0.272 1.272 12 C 0.538 3.462 13 O -0.543 6.543 14 N -0.629 5.629 15 C 0.093 3.907 16 C 0.159 3.841 17 H 0.110 0.890 18 N -0.700 5.700 19 C 0.652 3.348 20 O -0.564 6.564 21 O -0.366 6.366 22 C 0.137 3.863 23 C -0.183 4.183 24 C -0.141 4.141 25 C -0.186 4.186 26 C -0.084 4.084 27 C -0.134 4.134 28 C -0.133 4.133 29 C 0.112 3.888 30 H 0.020 0.980 31 H 0.075 0.925 32 H 0.036 0.964 33 H 0.260 0.740 34 H 0.086 0.914 35 H 0.071 0.929 36 H 0.405 0.595 37 H 0.057 0.943 38 H 0.069 0.931 39 H 0.089 0.911 40 H 0.067 0.933 41 H 0.079 0.921 42 H 0.065 0.935 43 H 0.090 0.910 44 H 0.069 0.931 45 H 0.061 0.939 46 H 0.062 0.938 47 H 0.064 0.936 48 H 0.056 0.944 49 H 0.066 0.934 50 H 0.064 0.936 51 H 0.060 0.940 52 H 0.077 0.923 53 H 0.058 0.942 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 0.761 8.405 21.846 23.419 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 -0.185 4.185 2 C 0.013 3.987 3 H 0.072 0.928 4 C -0.542 4.542 5 H 0.091 0.909 6 C -0.140 4.140 7 N -0.533 5.533 8 Si 0.724 3.276 9 H -0.207 1.207 10 H -0.213 1.213 11 H -0.197 1.197 12 C 0.330 3.670 13 O -0.419 6.419 14 N -0.367 5.367 15 C -0.031 4.031 16 C 0.055 3.945 17 H 0.128 0.872 18 N -0.359 5.359 19 C 0.405 3.595 20 O -0.453 6.453 21 O -0.281 6.281 22 C 0.100 3.900 23 C -0.240 4.240 24 C -0.198 4.198 25 C -0.243 4.243 26 C -0.086 4.086 27 C -0.192 4.192 28 C -0.191 4.191 29 C -0.011 4.011 30 H 0.038 0.962 31 H 0.094 0.906 32 H 0.055 0.945 33 H 0.070 0.930 34 H 0.104 0.896 35 H 0.090 0.910 36 H 0.241 0.759 37 H 0.076 0.924 38 H 0.088 0.912 39 H 0.107 0.893 40 H 0.086 0.914 41 H 0.098 0.902 42 H 0.084 0.916 43 H 0.109 0.891 44 H 0.088 0.912 45 H 0.080 0.920 46 H 0.081 0.919 47 H 0.083 0.917 48 H 0.075 0.925 49 H 0.085 0.915 50 H 0.083 0.917 51 H 0.079 0.921 52 H 0.095 0.905 53 H 0.076 0.924 Dipole moment (debyes) X Y Z Total from point charges 0.579 8.289 21.356 22.915 hybrid contribution 0.615 -0.437 -0.797 1.097 sum 1.194 7.853 20.559 22.040 Atomic orbital electron populations 1.21729 0.96729 1.00681 0.99326 1.18829 0.93799 0.97090 0.88992 0.92820 1.21129 1.35203 1.08749 0.89156 0.90854 1.24939 0.95263 0.94754 0.99062 1.69949 1.44270 1.15353 1.23751 0.86490 0.78794 0.79902 0.82369 1.20687 1.21333 1.19702 1.21801 0.76952 0.85220 0.83010 1.90538 1.42146 1.23469 1.85702 1.48763 1.63997 1.18483 1.05423 1.22519 1.00162 0.86187 0.94238 1.22048 0.88255 0.90768 0.93426 0.87178 1.44777 1.19121 1.02716 1.69317 1.18048 0.81802 0.82860 0.76766 1.90916 1.33036 1.69087 1.52256 1.86290 1.40055 1.21917 1.79836 1.22057 0.96762 0.74416 0.96744 1.22514 1.00005 1.02274 0.99174 1.21858 0.95447 1.00476 1.02001 1.22531 1.04685 1.02090 0.94969 1.22056 0.97551 0.93407 0.95552 1.21697 1.00430 1.02484 0.94554 1.21702 0.93866 1.00464 1.03052 1.22193 0.97004 0.98616 0.83282 0.96164 0.90627 0.94504 0.92993 0.89619 0.91029 0.75856 0.92356 0.91224 0.89264 0.91408 0.90191 0.91612 0.89101 0.91215 0.91976 0.91880 0.91693 0.92476 0.91469 0.91717 0.92086 0.90463 0.92368 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 13. 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 -2.94 8.86 37.15 0.33 -2.61 16 2 C 0.03 0.86 1.90 -92.93 -0.18 0.69 16 3 H 0.05 1.45 7.99 -51.93 -0.42 1.04 16 4 C -0.50 -14.57 8.30 -34.44 -0.29 -14.86 16 5 H 0.07 2.24 6.79 -52.48 -0.36 1.88 16 6 C 0.06 1.73 5.27 -17.82 -0.09 1.63 16 7 N -0.89 -25.68 12.08 55.43 0.67 -25.01 16 8 Si 0.90 22.13 29.54 -169.99 -5.02 17.11 16 9 H -0.28 -6.82 7.11 56.52 0.40 -6.42 16 10 H -0.29 -6.96 7.11 56.52 0.40 -6.56 16 11 H -0.27 -6.76 7.11 56.52 0.40 -6.36 16 12 C 0.54 12.57 7.10 -10.99 -0.08 12.49 16 13 O -0.54 -14.41 15.78 5.56 0.09 -14.33 16 14 N -0.63 -11.22 3.31 -170.52 -0.56 -11.79 16 15 C 0.09 1.45 5.59 -3.06 -0.02 1.43 16 16 C 0.16 1.88 2.51 -66.10 -0.17 1.71 16 17 H 0.11 1.28 7.60 -51.92 -0.39 0.89 16 18 N -0.70 -7.97 4.57 -56.93 -0.26 -8.23 16 19 C 0.65 8.55 8.05 54.05 0.44 8.98 16 20 O -0.56 -8.51 11.61 -19.28 -0.22 -8.74 16 21 O -0.37 -4.42 9.94 -40.31 -0.40 -4.82 16 22 C 0.14 1.40 1.13 -90.62 -0.10 1.30 16 23 C -0.18 -1.73 8.37 37.16 0.31 -1.42 16 24 C -0.14 -1.07 8.85 37.16 0.33 -0.74 16 25 C -0.19 -2.05 8.37 37.16 0.31 -1.73 16 26 C -0.08 -0.87 0.83 -152.36 -0.13 -1.00 16 27 C -0.13 -1.04 8.22 37.16 0.31 -0.74 16 28 C -0.13 -1.31 8.57 37.16 0.32 -0.99 16 29 C 0.11 1.57 5.80 -2.53 -0.01 1.56 16 30 H 0.02 0.39 5.39 -51.93 -0.28 0.11 16 31 H 0.07 1.89 6.97 -51.93 -0.36 1.53 16 32 H 0.04 0.85 8.13 -51.93 -0.42 0.43 16 33 H 0.26 7.13 8.31 -40.82 -0.34 6.79 16 34 H 0.09 1.35 5.74 -51.93 -0.30 1.05 16 35 H 0.07 1.25 8.04 -51.93 -0.42 0.83 16 36 H 0.41 4.01 7.01 -40.82 -0.29 3.73 16 37 H 0.06 0.51 8.14 -51.92 -0.42 0.08 16 38 H 0.07 0.53 8.14 -51.93 -0.42 0.11 16 39 H 0.09 1.05 5.88 -51.93 -0.31 0.74 16 40 H 0.07 0.53 8.14 -51.93 -0.42 0.10 16 41 H 0.08 0.47 8.14 -51.93 -0.42 0.04 16 42 H 0.06 0.46 8.14 -51.93 -0.42 0.03 16 43 H 0.09 1.23 5.88 -51.93 -0.31 0.93 16 44 H 0.07 0.62 8.14 -51.93 -0.42 0.20 16 45 H 0.06 0.70 8.14 -51.93 -0.42 0.28 16 46 H 0.06 0.46 8.14 -51.93 -0.42 0.03 16 47 H 0.06 0.46 8.14 -51.93 -0.42 0.04 16 48 H 0.06 0.42 6.38 -51.93 -0.33 0.08 16 49 H 0.07 0.79 7.91 -51.92 -0.41 0.38 16 50 H 0.06 0.58 8.14 -51.93 -0.42 0.16 16 51 H 0.06 0.50 8.14 -51.93 -0.42 0.08 16 52 H 0.08 1.16 7.99 -51.93 -0.41 0.74 16 53 H 0.06 0.78 7.99 -51.93 -0.41 0.36 16 LS Contribution 409.45 15.07 6.17 6.17 Total: -1.00 -33.11 409.45 -7.46 -40.57 By element: Atomic # 1 Polarization: 12.55 SS G_CDS: -9.20 Total: 3.35 kcal Atomic # 6 Polarization: 4.44 SS G_CDS: 1.28 Total: 5.72 kcal Atomic # 7 Polarization: -44.88 SS G_CDS: -0.15 Total: -45.04 kcal Atomic # 8 Polarization: -27.35 SS G_CDS: -0.54 Total: -27.88 kcal Atomic # 14 Polarization: 22.13 SS G_CDS: -5.02 Total: 17.11 kcal Total LS contribution 6.17 Total: 6.17 kcal Total: -33.11 -7.46 -40.57 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. ZINC000927902158.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 -82.466 kcal (2) G-P(sol) polarization free energy of solvation -33.110 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -115.576 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -7.464 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -40.574 kcal (6) G-S(sol) free energy of system = (1) + (5) -123.040 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.76 seconds