Wall clock time and date at job start Wed Apr 1 2020 02:15:18 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 1.52998 * 1 3 3 C 1.53001 * 109.47451 * 2 1 4 4 H 1.08998 * 109.46660 * 304.99790 * 3 2 1 5 5 F 1.39895 * 109.47214 * 65.00091 * 3 2 1 6 6 C 1.50700 * 109.47145 * 185.00174 * 3 2 1 7 7 O 1.21286 * 120.00043 * 316.52703 * 6 3 2 8 8 N 1.34772 * 120.00309 * 136.53193 * 6 3 2 9 9 C 1.46931 * 120.60555 * 175.56890 * 8 6 3 10 10 C 1.53194 * 108.77477 * 233.57983 * 9 8 6 11 11 C 1.53044 * 109.33632 * 305.41763 * 10 9 8 12 12 C 1.53000 * 109.45774 * 181.36964 * 11 10 9 13 13 O 1.42901 * 109.47065 * 174.99939 * 12 11 10 14 14 C 1.42895 * 114.00255 * 179.97438 * 13 12 11 15 15 H 1.09007 * 110.64018 * 333.14295 * 14 13 12 16 16 C 1.55159 * 110.72574 * 209.99736 * 14 13 12 17 17 C 1.54905 * 101.58639 * 206.13376 * 16 14 13 18 18 N 1.47427 * 104.82852 * 37.00975 * 17 16 14 19 19 C 1.36946 * 125.64682 * 155.83450 * 18 17 16 20 20 H 1.07995 * 119.99871 * 180.02562 * 19 18 17 21 21 C 1.38811 * 119.99910 * 0.02619 * 19 18 17 22 22 N 1.31619 * 119.99962 * 0.02562 * 21 19 18 23 23 Si 1.86799 * 119.99901 * 179.97438 * 21 19 18 24 24 H 1.48498 * 109.47099 * 59.99976 * 23 21 19 25 25 H 1.48503 * 109.47087 * 179.97438 * 23 21 19 26 26 H 1.48497 * 109.47181 * 299.99867 * 23 21 19 27 27 C 1.47023 * 108.70644 * 335.87300 * 18 17 16 28 28 C 1.53033 * 109.54006 * 61.34561 * 11 10 9 29 29 C 1.46928 * 120.63046 * 355.59528 * 8 6 3 30 30 H 1.09007 * 109.46880 * 59.99971 * 1 2 3 31 31 H 1.08998 * 109.47311 * 179.97438 * 1 2 3 32 32 H 1.08998 * 109.47214 * 300.00486 * 1 2 3 33 33 H 1.09007 * 109.46995 * 239.99654 * 2 1 3 34 34 H 1.09000 * 109.46953 * 120.00424 * 2 1 3 35 35 H 1.08999 * 109.56200 * 113.81018 * 9 8 6 36 36 H 1.09000 * 109.62076 * 353.38366 * 9 8 6 37 37 H 1.09000 * 109.49973 * 185.44997 * 10 9 8 38 38 H 1.09001 * 109.49882 * 65.38007 * 10 9 8 39 39 H 1.09004 * 109.46069 * 301.32429 * 11 10 9 40 40 H 1.09000 * 109.46966 * 294.99376 * 12 11 10 41 41 H 1.08997 * 109.47536 * 54.99876 * 12 11 10 42 42 H 1.08999 * 111.00062 * 324.21635 * 16 14 13 43 43 H 1.09007 * 111.00049 * 88.06078 * 16 14 13 44 44 H 1.08997 * 110.36556 * 155.84543 * 17 16 14 45 45 H 1.08995 * 110.36728 * 278.17416 * 17 16 14 46 46 H 0.96999 * 120.00302 * 180.02562 * 22 21 19 47 47 H 1.09001 * 109.88099 * 241.64250 * 27 18 17 48 48 H 1.08991 * 109.88222 * 120.47631 * 27 18 17 49 49 H 1.09008 * 109.49932 * 58.58727 * 28 11 10 50 50 H 1.09000 * 109.49910 * 178.64622 * 28 11 10 51 51 H 1.09001 * 109.58629 * 6.60196 * 29 8 6 52 52 H 1.08992 * 109.58964 * 246.17808 * 29 8 6 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 6 2.0401 1.4425 0.0000 4 1 1.6055 1.9814 -0.8418 5 9 1.6700 2.0680 1.1954 6 6 3.5420 1.4442 -0.1239 7 8 4.2048 0.6620 0.5240 8 7 4.1487 2.3150 -0.9545 9 6 5.6146 2.3947 -1.0139 10 6 6.0388 3.8495 -0.7889 11 6 5.3183 4.7490 -1.7959 12 6 5.7659 6.1983 -1.5960 13 8 5.1836 7.0207 -2.6092 14 6 5.5393 8.4013 -2.5129 15 1 5.7766 8.6660 -1.4824 16 6 4.4012 9.3012 -3.0627 17 6 5.1863 10.5623 -3.5017 18 7 6.4566 10.0463 -4.0436 19 6 7.2572 10.6888 -4.9500 20 1 8.1722 10.2245 -5.2867 21 6 6.8927 11.9370 -5.4358 22 7 5.7777 12.5031 -5.0250 23 14 7.9851 12.8137 -6.6717 24 1 8.1204 11.9790 -7.8924 25 1 7.3770 14.1200 -7.0308 26 1 9.3261 13.0388 -6.0748 27 6 6.7210 8.7273 -3.4504 28 6 3.8064 4.6481 -1.5821 29 6 3.3568 3.2026 -1.8170 30 1 -0.3633 0.5139 -0.8900 31 1 -0.3634 -1.0276 -0.0005 32 1 -0.3633 0.5139 0.8899 33 1 1.8933 -0.5139 -0.8900 34 1 1.8933 -0.5139 0.8900 35 1 5.9589 2.0610 -1.9928 36 1 6.0473 1.7637 -0.2376 37 1 7.1163 3.9397 -0.9263 38 1 5.7745 4.1529 0.2241 39 1 5.5640 4.4297 -2.8087 40 1 5.4422 6.5465 -0.6151 41 1 6.8524 6.2555 -1.6615 42 1 3.9085 8.8316 -3.9140 43 1 3.6811 9.5420 -2.2805 44 1 4.6365 11.1022 -4.2727 45 1 5.3743 11.2095 -2.6451 46 1 5.5227 13.3752 -5.3648 47 1 7.6495 8.7568 -2.8800 48 1 6.7897 7.9748 -4.2358 49 1 3.5626 4.9436 -0.5616 50 1 3.2950 5.3072 -2.2837 51 1 2.2997 3.1041 -1.5703 52 1 3.5168 2.9353 -2.8615 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) F: (AM1): M.J.S. DEWAR AND E. G. ZOEBISCH, THEOCHEM, 180, 1 (1988). 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 ZINC001088235882.mol2 52 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Wed Apr 1 2020 02:15:18 Heat of formation + Delta-G solvation = -111.228834 kcal Electronic energy + Delta-G solvation = -30411.406825 eV Core-core repulsion = 26132.849538 eV Total energy + Delta-G solvation = -4278.557286 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 342.211 amu Computer time = 0.91 seconds Orbital eigenvalues (eV) -48.28292 -40.58323 -38.72579 -37.73425 -35.91526 -34.53686 -33.68085 -32.11796 -31.58285 -29.29651 -28.63469 -27.44597 -26.68384 -24.40488 -23.81316 -23.51865 -22.24845 -20.84806 -20.19494 -20.13412 -19.48606 -18.29779 -17.11818 -16.97304 -16.55313 -16.42337 -15.90546 -15.42270 -15.06632 -14.94560 -14.78320 -14.63200 -14.29998 -14.23918 -13.90544 -13.68224 -13.45173 -13.37638 -13.07413 -12.74015 -12.65775 -12.60591 -12.41356 -12.31412 -11.75458 -11.67193 -11.58450 -11.50744 -11.27987 -11.24945 -11.03116 -10.96226 -10.83070 -10.72281 -10.68851 -10.27113 -10.15002 -10.02153 -9.78652 -9.55366 -9.11697 -9.10098 -8.66400 -6.85195 -5.66497 -3.08496 1.97291 2.38888 3.39982 3.43830 3.45355 3.71630 3.79607 3.96430 3.99750 4.36114 4.42660 4.48388 4.50415 4.65041 4.74407 4.85174 4.91071 4.94079 5.00747 5.12300 5.16963 5.28816 5.32644 5.36203 5.41935 5.43245 5.47784 5.48999 5.57212 5.60168 5.63750 5.65406 5.72710 5.73728 5.75035 5.84256 5.89429 6.09252 6.14047 6.33209 6.52765 6.57226 6.64062 6.71523 6.83702 7.47596 7.57272 7.60876 7.62609 7.83782 8.34409 9.20474 9.81269 10.45647 11.37522 Molecular weight = 342.21amu Principal moments of inertia in cm(-1) A = 0.027156 B = 0.001790 C = 0.001733 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1030.835614 B =15635.242902 C =16154.479707 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.154 4.154 2 C -0.140 4.140 3 C 0.075 3.925 4 H 0.106 0.894 5 F -0.188 7.188 6 C 0.495 3.505 7 O -0.525 6.525 8 N -0.603 5.603 9 C 0.112 3.888 10 C -0.129 4.129 11 C -0.085 4.085 12 C 0.067 3.933 13 O -0.376 6.376 14 C 0.077 3.923 15 H 0.062 0.938 16 C -0.138 4.138 17 C 0.152 3.848 18 N -0.602 5.602 19 C -0.222 4.222 20 H 0.077 0.923 21 C -0.012 4.012 22 N -0.924 5.924 23 Si 0.916 3.084 24 H -0.285 1.285 25 H -0.289 1.289 26 H -0.286 1.286 27 C 0.119 3.881 28 C -0.128 4.128 29 C 0.098 3.902 30 H 0.059 0.941 31 H 0.065 0.935 32 H 0.063 0.937 33 H 0.083 0.917 34 H 0.087 0.913 35 H 0.073 0.927 36 H 0.094 0.906 37 H 0.081 0.919 38 H 0.069 0.931 39 H 0.083 0.917 40 H 0.045 0.955 41 H 0.048 0.952 42 H 0.069 0.931 43 H 0.060 0.940 44 H 0.110 0.890 45 H 0.013 0.987 46 H 0.253 0.747 47 H 0.019 0.981 48 H 0.033 0.967 49 H 0.067 0.933 50 H 0.092 0.908 51 H 0.087 0.913 52 H 0.079 0.921 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -8.974 -23.566 9.430 26.923 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 -0.212 4.212 2 C -0.179 4.179 3 C 0.036 3.964 4 H 0.124 0.876 5 F -0.169 7.169 6 C 0.280 3.720 7 O -0.400 6.400 8 N -0.337 5.337 9 C -0.010 4.010 10 C -0.167 4.167 11 C -0.104 4.104 12 C -0.011 4.011 13 O -0.295 6.295 14 C 0.019 3.981 15 H 0.080 0.920 16 C -0.177 4.177 17 C 0.027 3.973 18 N -0.329 5.329 19 C -0.351 4.351 20 H 0.095 0.905 21 C -0.207 4.207 22 N -0.572 5.572 23 Si 0.747 3.253 24 H -0.211 1.211 25 H -0.215 1.215 26 H -0.212 1.212 27 C -0.007 4.007 28 C -0.166 4.166 29 C -0.024 4.024 30 H 0.078 0.922 31 H 0.084 0.916 32 H 0.082 0.918 33 H 0.102 0.898 34 H 0.105 0.895 35 H 0.091 0.909 36 H 0.112 0.888 37 H 0.100 0.900 38 H 0.088 0.912 39 H 0.101 0.899 40 H 0.063 0.937 41 H 0.067 0.933 42 H 0.088 0.912 43 H 0.079 0.921 44 H 0.128 0.872 45 H 0.031 0.969 46 H 0.064 0.936 47 H 0.037 0.963 48 H 0.051 0.949 49 H 0.086 0.914 50 H 0.110 0.890 51 H 0.105 0.895 52 H 0.097 0.903 Dipole moment (debyes) X Y Z Total from point charges -8.731 -23.842 9.547 27.126 hybrid contribution 0.857 0.782 -0.318 1.203 sum -7.874 -23.060 9.229 26.057 Atomic orbital electron populations 1.21782 0.93987 1.02741 1.02640 1.21995 0.97398 0.93463 1.05006 1.21820 0.92144 0.96479 0.85947 0.87616 1.92891 1.91973 1.83886 1.48150 1.20967 0.90457 0.80819 0.79755 1.90720 1.66185 1.38520 1.44597 1.48239 1.07634 1.37359 1.40445 1.21660 0.78876 0.97289 1.03127 1.21923 1.00889 0.93991 0.99932 1.21112 0.95146 0.93816 1.00287 1.22468 0.97108 0.90204 0.91275 1.87887 1.71415 1.18731 1.51493 1.23228 0.96755 0.80034 0.98064 0.92044 1.23158 0.96648 0.97782 1.00121 1.21958 0.86399 0.90791 0.98139 1.44387 1.23496 1.15849 1.49203 1.19041 1.01650 0.98987 1.15396 0.90523 1.24799 0.97991 0.97327 1.00600 1.69766 1.23487 1.17003 1.46960 0.86127 0.79453 0.78818 0.80944 1.21136 1.21523 1.21222 1.21667 0.94654 0.89669 0.94760 1.21935 0.96213 0.95126 1.03285 1.22048 0.95459 0.90229 0.94689 0.92229 0.91627 0.91837 0.89824 0.89473 0.90887 0.88761 0.90025 0.91195 0.89856 0.93714 0.93347 0.91182 0.92118 0.87190 0.96906 0.93627 0.96343 0.94915 0.91404 0.88987 0.89496 0.90272 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 15. 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 -0.79 9.83 37.16 0.37 -0.42 16 2 C -0.14 -0.94 5.39 -26.73 -0.14 -1.08 16 3 C 0.08 0.59 3.38 -27.88 -0.09 0.49 16 4 H 0.11 0.54 5.37 -51.93 -0.28 0.27 16 5 F -0.19 -1.92 16.75 2.25 0.04 -1.88 16 6 C 0.49 5.02 7.05 -10.99 -0.08 4.95 16 7 O -0.52 -7.10 16.00 5.55 0.09 -7.01 16 8 N -0.60 -5.18 2.97 -172.77 -0.51 -5.69 16 9 C 0.11 0.93 6.42 -3.71 -0.02 0.91 16 10 C -0.13 -1.05 5.36 -26.61 -0.14 -1.19 16 11 C -0.09 -0.79 2.39 -90.58 -0.22 -1.01 16 12 C 0.07 0.79 5.15 37.16 0.19 0.99 16 13 O -0.38 -5.90 9.58 -35.23 -0.34 -6.23 16 14 C 0.08 1.39 3.45 -24.89 -0.09 1.30 16 15 H 0.06 1.04 7.82 -51.93 -0.41 0.63 16 16 C -0.14 -2.68 6.81 -24.58 -0.17 -2.84 16 17 C 0.15 3.71 5.89 -2.53 -0.01 3.69 16 18 N -0.60 -15.72 3.40 -170.08 -0.58 -16.29 16 19 C -0.22 -6.27 10.27 -15.06 -0.15 -6.42 16 20 H 0.08 2.08 7.83 -52.49 -0.41 1.67 16 21 C -0.01 -0.33 5.49 -17.43 -0.10 -0.43 16 22 N -0.92 -26.90 10.09 55.49 0.56 -26.34 16 23 Si 0.92 22.06 29.55 -169.99 -5.02 17.04 16 24 H -0.28 -6.75 7.11 56.52 0.40 -6.35 16 25 H -0.29 -6.99 7.11 56.52 0.40 -6.59 16 26 H -0.29 -6.79 7.11 56.52 0.40 -6.38 16 27 C 0.12 2.56 7.02 -3.06 -0.02 2.54 16 28 C -0.13 -1.08 5.27 -26.62 -0.14 -1.23 16 29 C 0.10 0.66 6.32 -3.71 -0.02 0.64 16 30 H 0.06 0.24 8.14 -51.93 -0.42 -0.18 16 31 H 0.06 0.28 8.14 -51.93 -0.42 -0.14 16 32 H 0.06 0.36 7.94 -51.93 -0.41 -0.05 16 33 H 0.08 0.48 8.14 -51.92 -0.42 0.05 16 34 H 0.09 0.70 8.04 -51.93 -0.42 0.28 16 35 H 0.07 0.52 8.14 -51.93 -0.42 0.10 16 36 H 0.09 0.88 7.03 -51.93 -0.37 0.52 16 37 H 0.08 0.59 8.14 -51.93 -0.42 0.17 16 38 H 0.07 0.62 8.14 -51.93 -0.42 0.19 16 39 H 0.08 0.81 8.14 -51.93 -0.42 0.39 16 40 H 0.04 0.51 8.11 -51.93 -0.42 0.09 16 41 H 0.05 0.58 8.14 -51.93 -0.42 0.15 16 42 H 0.07 1.38 8.14 -51.93 -0.42 0.95 16 43 H 0.06 1.03 8.14 -51.92 -0.42 0.60 16 44 H 0.11 3.00 5.87 -51.93 -0.31 2.70 16 45 H 0.01 0.33 8.14 -51.93 -0.42 -0.09 16 46 H 0.25 7.14 8.31 -40.82 -0.34 6.80 16 47 H 0.02 0.39 8.14 -51.93 -0.42 -0.03 16 48 H 0.03 0.72 8.06 -51.93 -0.42 0.30 16 49 H 0.07 0.61 8.14 -51.92 -0.42 0.19 16 50 H 0.09 0.86 7.79 -51.93 -0.40 0.46 16 51 H 0.09 0.44 5.16 -51.93 -0.27 0.17 16 52 H 0.08 0.46 8.14 -51.93 -0.42 0.04 16 LS Contribution 406.45 15.07 6.13 6.13 Total: -1.00 -32.85 406.45 -9.65 -42.50 By element: Atomic # 1 Polarization: 6.07 SS G_CDS: -9.16 Total: -3.09 kcal Atomic # 6 Polarization: 1.72 SS G_CDS: -0.85 Total: 0.88 kcal Atomic # 7 Polarization: -47.79 SS G_CDS: -0.53 Total: -48.32 kcal Atomic # 8 Polarization: -12.99 SS G_CDS: -0.25 Total: -13.24 kcal Atomic # 9 Polarization: -1.92 SS G_CDS: 0.04 Total: -1.88 kcal Atomic # 14 Polarization: 22.06 SS G_CDS: -5.02 Total: 17.04 kcal Total LS contribution 6.13 Total: 6.13 kcal Total: -32.85 -9.65 -42.50 kcal The number of atoms in the molecule is 52 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. ZINC001088235882.mol2 52 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 -68.734 kcal (2) G-P(sol) polarization free energy of solvation -32.848 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -101.582 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.647 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -42.495 kcal (6) G-S(sol) free energy of system = (1) + (5) -111.229 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.91 seconds