Wall clock time and date at job start Tue Mar 9 2021 12:54:05 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= 0 * 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 O 1.42903 * 1 3 3 C 1.35658 * 117.00276 * 2 1 4 4 C 1.38404 * 120.11830 * 359.72984 * 3 2 1 5 5 C 1.38726 * 120.03017 * 179.72140 * 4 3 2 6 6 O 1.35716 * 119.86036 * 180.29917 * 5 4 3 7 7 C 1.42897 * 117.00302 * 0.25186 * 6 5 4 8 8 C 1.39144 * 120.27165 * 0.55188 * 5 4 3 9 9 C 1.50699 * 119.87735 * 179.74673 * 8 5 4 10 10 O 1.42896 * 109.47228 * 284.97449 * 9 8 5 11 11 Si 1.86297 * 109.46910 * 164.97779 * 9 8 5 12 12 C 1.37581 * 120.24338 * 359.72528 * 8 5 4 13 13 C 1.39818 * 119.96185 * 359.97438 * 12 8 5 14 14 C 1.47307 * 120.13621 * 180.02562 * 13 12 8 15 15 O 1.21618 * 120.00220 * 179.97438 * 14 13 12 16 16 N 1.34774 * 119.99701 * 359.97438 * 14 13 12 17 17 C 1.46502 * 119.99945 * 180.02562 * 16 14 13 18 18 H 1.09001 * 112.85102 * 336.19024 * 17 16 14 19 19 C 1.53777 * 113.61640 * 107.49925 * 17 16 14 20 20 C 1.53779 * 87.08279 * 89.11545 * 19 17 16 21 21 H 1.09000 * 113.61326 * 270.88254 * 20 19 17 22 22 C 1.50700 * 113.68897 * 139.99255 * 20 19 17 23 23 C 1.38217 * 119.97080 * 322.18860 * 22 20 19 24 24 C 1.38299 * 120.01114 * 179.72884 * 23 22 20 25 25 Br 1.89105 * 120.01983 * 180.28176 * 24 23 22 26 26 C 1.38523 * 119.96085 * 0.54785 * 24 23 22 27 27 F 1.35092 * 120.03257 * 179.75135 * 26 24 23 28 28 C 1.38456 * 119.93907 * 359.72752 * 26 24 23 29 29 C 1.38194 * 119.98039 * 0.02562 * 28 26 24 30 30 C 1.53781 * 87.07927 * 25.43521 * 20 19 17 31 31 H 1.09002 * 109.47382 * 179.97438 * 1 2 3 32 32 H 1.09001 * 109.46938 * 59.99682 * 1 2 3 33 33 H 1.09004 * 109.46926 * 299.99803 * 1 2 3 34 34 H 1.08001 * 119.98260 * 359.97438 * 4 3 2 35 35 H 1.08993 * 109.46811 * 179.97438 * 7 6 5 36 36 H 1.08998 * 109.47075 * 300.00186 * 7 6 5 37 37 H 1.09003 * 109.47133 * 60.00121 * 7 6 5 38 38 H 1.09001 * 109.47555 * 44.98016 * 9 8 5 39 39 H 0.96703 * 113.99449 * 60.00359 * 10 9 8 40 40 H 1.48501 * 110.00572 * 299.99801 * 11 9 8 41 41 H 1.48501 * 110.00244 * 61.32233 * 11 9 8 42 42 H 1.07996 * 120.02135 * 180.02562 * 12 8 5 43 43 H 0.97002 * 120.00351 * 359.97438 * 16 14 13 44 44 H 1.08996 * 113.61345 * 203.66614 * 19 17 16 45 45 H 1.09006 * 113.61402 * 334.56287 * 19 17 16 46 46 H 1.07993 * 119.99107 * 0.02562 * 23 22 20 47 47 H 1.07995 * 120.00933 * 180.02562 * 28 26 24 48 48 H 1.08006 * 119.97112 * 180.02562 * 29 28 26 49 49 H 1.08999 * 113.61222 * 220.02301 * 30 20 19 50 50 H 1.08993 * 113.69142 * 89.12722 * 30 20 19 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 8 1.4290 0.0000 0.0000 3 6 2.0450 1.2087 0.0000 4 6 1.2936 2.3710 -0.0056 5 6 1.9253 3.6061 0.0002 6 8 1.1852 4.7437 0.0008 7 6 -0.2358 4.5931 0.0008 8 6 3.3146 3.6833 0.0002 9 6 3.9916 5.0297 0.0008 10 8 3.8946 5.6123 -1.3004 11 14 5.7862 4.8221 0.4559 12 6 4.0725 2.5351 0.0000 13 6 3.4462 1.2850 0.0005 14 6 4.2539 0.0531 0.0009 15 8 3.7066 -1.0329 0.0018 16 7 5.5995 0.1297 0.0004 17 6 6.4028 -1.0955 0.0002 18 1 5.8666 -1.9533 0.4061 19 6 7.0944 -1.3785 -1.3438 20 6 8.2746 -0.5412 -0.8233 21 1 8.1886 0.5218 -1.0484 22 6 9.6240 -1.1081 -1.1822 23 6 9.8230 -2.4759 -1.1728 24 6 11.0594 -2.9973 -1.5075 25 35 11.3297 -4.8689 -1.5025 26 6 12.1013 -2.1475 -1.8409 27 9 13.3111 -2.6551 -2.1632 28 6 11.9015 -0.7774 -1.8442 29 6 10.6636 -0.2593 -1.5143 30 6 7.8088 -0.9103 0.5950 31 1 -0.3634 -1.0277 -0.0005 32 1 -0.3633 0.5139 -0.8900 33 1 -0.3633 0.5138 0.8900 34 1 0.2150 2.3165 -0.0105 35 1 -0.7053 5.5768 0.0017 36 1 -0.5430 4.0443 -0.8894 37 1 -0.5430 4.0435 0.8905 38 1 3.5055 5.6806 0.7275 39 1 2.9864 5.7497 -1.6030 40 1 5.9010 4.2171 1.8072 41 1 6.4679 3.9626 -0.5450 42 1 5.1506 2.5992 0.0004 43 1 6.0361 0.9959 -0.0007 44 1 7.3385 -2.4298 -1.4963 45 1 6.5861 -0.9326 -2.1988 46 1 9.0114 -3.1376 -0.9088 47 1 12.7129 -0.1139 -2.1044 48 1 10.5078 0.8095 -1.5173 49 1 7.8773 -0.0863 1.3053 50 1 8.2477 -1.8332 0.9738 There are 74 doubly filled levels RHF calculation, no. of doubly occupied orbitals= 74 No. of singly occupied orbitals= 1 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). Br: (AM1): M.J.S. DEWAR AND E. G. ZOEBISCH, THEOCHEM, 180, 1 (1988). 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=0 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 s_22_9650940_12297780.mol2 50 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Tue Mar 9 2021 12:54:05 Heat of formation + Delta-G solvation = -90.031875 kcal Electronic energy + Delta-G solvation = -37938.930760 eV Core-core repulsion = 32667.755711 eV Total energy + Delta-G solvation = -5271.175049 eV No. of doubly occupied orbitals = 74 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 466.067 amu Computer time = 0.81 seconds Orbital eigenvalues (eV) -49.96758 -42.22772 -41.56692 -40.45842 -39.90384 -38.75180 -38.36150 -36.97952 -34.57670 -33.55649 -32.29600 -32.13899 -31.24289 -30.38440 -29.20369 -28.37451 -26.86165 -26.38238 -26.09249 -24.77442 -24.08396 -23.14366 -22.52440 -21.63722 -20.40103 -20.03968 -18.96649 -18.72533 -18.57879 -17.84881 -17.68975 -17.41635 -17.27300 -17.00675 -16.75208 -16.70266 -16.59886 -16.42002 -15.88371 -15.82538 -15.76352 -15.54152 -15.36861 -14.98153 -14.74118 -14.38712 -14.34479 -14.32142 -14.12458 -13.98931 -13.93904 -13.75060 -13.56605 -13.40037 -13.26126 -12.90412 -12.73500 -12.63340 -12.48415 -12.24359 -12.13707 -12.09988 -11.79278 -11.63838 -11.41226 -11.37113 -11.29093 -11.12220 -10.74721 -10.12624 -10.04588 -10.00226 -9.61544 -9.23502 -4.91182 -0.32858 -0.20727 -0.05611 0.02437 0.47901 1.28262 1.56037 1.75890 1.82054 1.86838 2.02324 2.06350 2.23504 2.59940 3.01643 3.25762 3.32255 3.42297 3.43440 3.53247 3.55114 3.62275 3.63419 3.78754 3.85212 3.90366 3.90994 3.93758 3.94671 3.98511 4.04351 4.06256 4.10381 4.13423 4.30531 4.34048 4.37875 4.45946 4.52900 4.58612 4.67594 4.70398 4.74300 4.76823 4.78794 4.84613 4.91515 4.93630 4.95116 5.04019 5.17480 5.28499 5.53178 5.57960 5.84285 6.17753 6.46067 6.56337 7.27916 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.018 3.982 2 O -0.273 6.273 3 C 0.233 3.767 4 C -0.308 4.308 5 C 0.210 3.790 6 O -0.306 6.306 7 C 0.022 3.978 8 C -0.188 4.188 9 C -0.069 4.069 10 O -0.536 6.536 11 Si 0.741 3.259 12 C -0.011 4.011 13 C -0.206 4.206 14 C 0.569 3.431 15 O -0.513 6.513 16 N -0.717 5.717 17 C 0.123 3.877 18 H 0.110 0.890 19 C -0.145 4.145 20 C -0.074 4.074 21 H 0.102 0.898 22 C -0.075 4.075 23 C -0.061 4.061 24 C -0.128 4.128 25 Br -0.026 7.026 26 C 0.123 3.877 27 F -0.124 7.124 28 C -0.144 4.144 29 C -0.071 4.071 30 C -0.137 4.137 31 H 0.108 0.892 32 H 0.058 0.942 33 H 0.058 0.942 34 H 0.147 0.853 35 H 0.109 0.891 36 H 0.061 0.939 37 H 0.060 0.940 38 H 0.076 0.924 39 H 0.366 0.634 40 H -0.245 1.245 41 H -0.251 1.251 42 H 0.135 0.865 43 H 0.395 0.605 44 H 0.097 0.903 45 H 0.078 0.922 46 H 0.144 0.856 47 H 0.146 0.854 48 H 0.140 0.860 49 H 0.079 0.921 50 H 0.101 0.899 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -4.089 6.978 1.664 8.257 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 -0.077 4.077 2 O -0.183 6.183 3 C 0.184 3.816 4 C -0.328 4.328 5 C 0.162 3.838 6 O -0.218 6.218 7 C -0.072 4.072 8 C -0.189 4.189 9 C -0.178 4.178 10 O -0.341 6.341 11 Si 0.639 3.361 12 C -0.030 4.030 13 C -0.210 4.210 14 C 0.357 3.643 15 O -0.388 6.388 16 N -0.370 5.370 17 C 0.017 3.983 18 H 0.128 0.872 19 C -0.184 4.184 20 C -0.093 4.093 21 H 0.120 0.880 22 C -0.076 4.076 23 C -0.080 4.080 24 C -0.209 4.209 25 Br 0.059 6.941 26 C 0.101 3.899 27 F -0.102 7.102 28 C -0.163 4.163 29 C -0.089 4.089 30 C -0.175 4.175 31 H 0.127 0.873 32 H 0.076 0.924 33 H 0.076 0.924 34 H 0.164 0.836 35 H 0.127 0.873 36 H 0.079 0.921 37 H 0.079 0.921 38 H 0.094 0.906 39 H 0.214 0.786 40 H -0.170 1.170 41 H -0.175 1.175 42 H 0.152 0.848 43 H 0.230 0.770 44 H 0.115 0.885 45 H 0.097 0.903 46 H 0.161 0.839 47 H 0.164 0.836 48 H 0.158 0.842 49 H 0.098 0.902 50 H 0.120 0.880 Dipole moment (debyes) X Y Z Total from point charges -2.967 4.847 1.918 5.998 hybrid contribution -1.772 0.176 -0.348 1.814 sum -4.739 5.023 1.570 7.081 Atomic orbital electron populations 1.23261 0.78100 1.04986 1.01339 1.86406 1.21281 1.24899 1.85734 1.18692 0.90532 0.84523 0.87892 1.21299 1.01169 0.91424 1.18875 1.18716 0.90240 0.84869 0.89932 1.86039 1.19949 1.28722 1.87123 1.23233 0.77283 1.04843 1.01874 1.19447 0.90478 0.96737 1.12241 1.25103 1.13627 0.90360 0.88672 1.86710 1.32195 1.83246 1.31933 0.92879 0.75918 0.88322 0.79012 1.20747 0.98818 0.90302 0.93104 1.19062 0.90796 0.93493 1.17681 1.17774 0.81620 0.88593 0.76294 1.90853 1.71250 1.28550 1.48161 1.45578 1.05847 1.08911 1.76634 1.21816 0.91098 0.88533 0.96828 0.87225 1.23601 0.95470 1.01046 0.98258 1.21635 0.90338 1.00211 0.97094 0.87953 1.19743 0.95699 0.92541 0.99643 1.20890 0.94835 0.95337 0.96974 1.21975 0.96692 0.91861 1.10351 1.96830 1.97241 1.02285 1.97725 1.17429 0.80584 0.91745 1.00107 1.91575 1.41304 1.87568 1.89745 1.21200 0.99497 0.92637 1.02973 1.21097 0.91280 1.00597 0.95964 1.23470 0.94751 1.03512 0.95785 0.87337 0.92352 0.92354 0.83567 0.87257 0.92060 0.92121 0.90611 0.78618 1.16961 1.17541 0.84800 0.76970 0.88480 0.90303 0.83862 0.83591 0.84202 0.90233 0.88049 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 0.02 -0.02 9.81 101.05 0.99 0.97 16 2 O -0.27 -0.97 8.56 -40.60 -0.35 -1.32 16 3 C 0.23 0.67 6.70 -38.73 -0.26 0.41 16 4 C -0.31 -0.18 8.01 -39.34 -0.31 -0.50 16 5 C 0.21 0.16 6.62 -39.07 -0.26 -0.10 16 6 O -0.31 0.20 9.36 -18.85 -0.18 0.02 16 7 C 0.02 -0.08 9.80 101.05 0.99 0.91 16 8 C -0.19 -0.22 5.27 -104.53 -0.55 -0.77 16 9 C -0.07 0.00 2.32 36.01 0.08 0.09 16 10 O -0.54 -0.39 12.65 -35.23 -0.45 -0.83 16 11 Si 0.74 -1.13 30.39 -169.99 -5.17 -6.29 16 12 C -0.01 -0.02 8.14 -39.23 -0.32 -0.33 16 13 C -0.21 -0.62 5.89 -104.83 -0.62 -1.24 16 14 C 0.57 2.23 7.76 -12.57 -0.10 2.13 16 15 O -0.51 -3.76 14.75 -16.66 -0.25 -4.01 16 16 N -0.72 -0.51 5.21 -54.13 -0.28 -0.79 16 17 C 0.12 -0.02 4.32 -67.12 -0.29 -0.31 16 18 H 0.11 0.15 7.46 -51.93 -0.39 -0.24 16 19 C -0.15 0.14 7.25 -25.92 -0.19 -0.05 16 20 C -0.07 0.16 3.85 -90.96 -0.35 -0.19 16 21 H 0.10 -0.31 8.09 -51.93 -0.42 -0.73 16 22 C -0.08 0.08 5.29 -104.62 -0.55 -0.47 16 23 C -0.06 0.01 8.34 -39.57 -0.33 -0.32 16 24 C -0.13 -0.21 6.23 -39.45 -0.25 -0.45 16 25 Br -0.03 -0.06 33.28 -68.01 -2.26 -2.32 16 26 C 0.12 0.23 7.27 -39.40 -0.29 -0.06 16 27 F -0.12 -0.41 16.73 2.25 0.04 -0.37 16 28 C -0.14 0.04 10.03 -39.52 -0.40 -0.36 16 29 C -0.07 0.10 9.71 -39.59 -0.38 -0.28 16 30 C -0.14 0.29 7.29 -25.92 -0.19 0.11 16 31 H 0.11 -0.22 8.14 -51.93 -0.42 -0.65 16 32 H 0.06 -0.14 7.65 -51.93 -0.40 -0.54 16 33 H 0.06 -0.14 7.67 -51.93 -0.40 -0.54 16 34 H 0.15 -0.28 4.50 -52.49 -0.24 -0.52 16 35 H 0.11 -0.57 8.14 -51.93 -0.42 -1.00 16 36 H 0.06 -0.27 7.64 -51.93 -0.40 -0.66 16 37 H 0.06 -0.26 7.66 -51.93 -0.40 -0.65 16 38 H 0.08 -0.06 7.82 -51.93 -0.41 -0.46 16 39 H 0.37 -0.41 8.59 45.56 0.39 -0.02 16 40 H -0.25 0.10 7.11 56.52 0.40 0.50 16 41 H -0.25 0.09 6.80 56.52 0.38 0.47 16 42 H 0.13 -0.04 3.24 -52.49 -0.17 -0.21 16 43 H 0.40 -0.51 6.72 -40.82 -0.27 -0.79 16 44 H 0.10 -0.14 6.33 -51.93 -0.33 -0.47 16 45 H 0.08 0.00 8.14 -51.93 -0.42 -0.42 16 46 H 0.14 -0.19 6.68 -52.49 -0.35 -0.54 16 47 H 0.15 -0.30 8.06 -52.49 -0.42 -0.72 16 48 H 0.14 -0.52 8.05 -52.48 -0.42 -0.94 16 49 H 0.08 -0.21 8.14 -51.93 -0.42 -0.63 16 50 H 0.10 -0.25 7.72 -51.93 -0.40 -0.65 16 LS Contribution 431.19 15.07 6.50 6.50 Total: 0.00 -8.77 431.19 -11.88 -20.66 By element: Atomic # 1 Polarization: -4.48 SS G_CDS: -5.92 Total: -10.41 kcal Atomic # 6 Polarization: 2.74 SS G_CDS: -3.57 Total: -0.82 kcal Atomic # 7 Polarization: -0.51 SS G_CDS: -0.28 Total: -0.79 kcal Atomic # 8 Polarization: -4.93 SS G_CDS: -1.22 Total: -6.14 kcal Atomic # 9 Polarization: -0.41 SS G_CDS: 0.04 Total: -0.37 kcal Atomic # 14 Polarization: -1.13 SS G_CDS: -5.17 Total: -6.29 kcal Atomic # 35 Polarization: -0.06 SS G_CDS: -2.26 Total: -2.32 kcal Total LS contribution 6.50 Total: 6.50 kcal Total: -8.77 -11.88 -20.66 kcal The number of atoms in the molecule is 50 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. s_22_9650940_12297780.mol2 50 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 -69.376 kcal (2) G-P(sol) polarization free energy of solvation -8.774 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -78.150 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -11.881 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -20.656 kcal (6) G-S(sol) free energy of system = (1) + (5) -90.032 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.81 seconds