Wall clock time and date at job start Tue Mar 31 2020 19:42:04 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 O 1.42895 * 1 3 3 C 1.42896 * 114.00641 * 2 1 4 4 H 1.09007 * 110.53228 * 27.40427 * 3 2 1 5 5 C 1.55452 * 110.48275 * 149.99914 * 3 2 1 6 6 H 1.08993 * 113.25438 * 347.31479 * 5 3 2 7 7 C 1.56112 * 104.35213 * 111.72671 * 5 3 2 8 8 H 1.09004 * 116.43365 * 203.45884 * 7 5 3 9 9 C 1.56224 * 102.67173 * 332.52078 * 7 5 3 10 10 C 1.55786 * 110.48494 * 264.79834 * 3 2 1 11 11 H 1.09004 * 115.99191 * 46.83982 * 10 3 2 12 12 C 1.55991 * 104.37293 * 175.69218 * 10 3 2 13 13 C 1.54781 * 105.14615 * 70.57579 * 12 10 3 14 14 H 1.09002 * 113.57048 * 124.23072 * 13 12 10 15 15 C 1.54241 * 108.22996 * 252.54529 * 13 12 10 16 16 N 1.46794 * 106.17103 * 75.36039 * 15 13 12 17 17 C 1.34783 * 125.50597 * 192.70140 * 16 15 13 18 18 O 1.21586 * 119.99728 * 179.69253 * 17 16 15 19 19 N 1.34777 * 119.99993 * 359.69017 * 17 16 15 20 20 C 1.46496 * 120.00012 * 180.02562 * 19 17 16 21 21 C 1.52999 * 109.47487 * 180.02562 * 20 19 17 22 22 C 1.53006 * 109.46623 * 299.99762 * 21 20 19 23 23 C 1.52997 * 109.47269 * 59.99598 * 21 20 19 24 24 C 1.52997 * 109.47317 * 179.97438 * 21 20 19 25 25 C 1.50699 * 109.47078 * 179.97438 * 24 21 20 26 26 H 1.07999 * 120.00019 * 359.97438 * 25 24 21 27 27 C 1.37877 * 120.00129 * 180.02562 * 25 24 21 28 28 N 1.31513 * 119.99969 * 180.02562 * 27 25 24 29 29 Si 1.86797 * 119.99840 * 359.97438 * 27 25 24 30 30 H 1.48494 * 109.47087 * 90.00328 * 29 27 25 31 31 H 1.48500 * 109.47028 * 210.00109 * 29 27 25 32 32 H 1.48500 * 109.47023 * 330.00059 * 29 27 25 33 33 H 1.09003 * 109.47383 * 59.99562 * 1 2 3 34 34 H 1.09000 * 109.47822 * 179.97438 * 1 2 3 35 35 H 1.09003 * 109.46899 * 300.00157 * 1 2 3 36 36 H 1.08998 * 111.98442 * 293.56822 * 9 7 5 37 37 H 1.09005 * 111.98468 * 167.15836 * 9 7 5 38 38 H 1.08993 * 110.30966 * 189.49813 * 12 10 3 39 39 H 1.09002 * 110.30700 * 311.56088 * 12 10 3 40 40 H 1.08992 * 110.20106 * 316.11800 * 15 13 12 41 41 H 1.09001 * 109.98296 * 194.47716 * 15 13 12 42 42 H 0.97004 * 120.00071 * 0.02562 * 19 17 16 43 43 H 1.09001 * 109.47464 * 59.99570 * 20 19 17 44 44 H 1.09002 * 109.47021 * 299.99962 * 20 19 17 45 45 H 1.09001 * 109.47002 * 179.97438 * 22 21 20 46 46 H 1.08993 * 109.46955 * 300.00075 * 22 21 20 47 47 H 1.09000 * 109.47050 * 59.99904 * 22 21 20 48 48 H 1.09000 * 109.47140 * 300.00547 * 23 21 20 49 49 H 1.09001 * 109.47230 * 59.99691 * 23 21 20 50 50 H 1.09001 * 109.47375 * 180.02562 * 23 21 20 51 51 H 1.09002 * 109.47153 * 299.99641 * 24 21 20 52 52 H 1.08996 * 109.46952 * 59.99813 * 24 21 20 53 53 H 0.96999 * 119.99716 * 179.97438 * 28 27 25 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 1.4289 0.0000 0.0000 3 6 2.0103 1.3054 0.0000 4 1 1.3380 2.0233 0.4699 5 6 3.3837 1.2892 0.7281 6 1 3.5615 0.3730 1.2911 7 6 4.4256 1.5475 -0.4053 8 1 5.4412 1.1976 -0.2197 9 6 3.7030 0.9833 -1.6702 10 6 2.3530 1.7496 -1.4533 11 1 1.5719 1.5932 -2.1974 12 6 2.8655 3.2148 -1.2997 13 6 4.2428 3.0907 -0.6046 14 1 5.0544 3.5636 -1.1577 15 6 4.0937 3.5760 0.8519 16 7 3.3973 2.5024 1.5712 17 6 2.8533 2.6081 2.7998 18 8 2.2927 1.6525 3.3007 19 7 2.9308 3.7730 3.4732 20 6 2.3400 3.8878 4.8088 21 6 2.5653 5.3023 5.3465 22 6 4.0671 5.5839 5.4272 23 6 1.9062 6.3155 4.4085 24 6 1.9477 5.4223 6.7411 25 6 2.1703 6.8154 7.2709 26 1 2.6997 7.5424 6.6729 27 6 1.6990 7.1617 8.5195 28 7 1.8928 8.3776 8.9816 29 14 0.7839 5.9041 9.5541 30 1 1.7519 5.1598 10.3992 31 1 -0.1995 6.5992 10.4229 32 1 0.0719 4.9535 8.6626 33 1 -0.3634 0.5139 -0.8900 34 1 -0.3635 -1.0276 -0.0005 35 1 -0.3633 0.5139 0.8900 36 1 3.5719 -0.0974 -1.6173 37 1 4.1997 1.2849 -2.5925 38 1 2.9763 3.6814 -2.2785 39 1 2.1787 3.7929 -0.6814 40 1 3.5051 4.4927 0.8848 41 1 5.0771 3.7449 1.2908 42 1 3.3778 4.5355 3.0734 43 1 2.8092 3.1657 5.4770 44 1 1.2701 3.6876 4.7512 45 1 4.2277 6.5918 5.8098 46 1 4.5366 4.8621 6.0954 47 1 4.5067 5.4985 4.4335 48 1 2.3458 6.2301 3.4147 49 1 0.8364 6.1149 4.3508 50 1 2.0672 7.3233 4.7913 51 1 0.8779 5.2219 6.6831 52 1 2.4170 4.7005 7.4095 53 1 1.5609 8.6212 9.8598 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 ZINC000377039995.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 19:42:04 Heat of formation + Delta-G solvation = -65.817231 kcal Electronic energy + Delta-G solvation = -31037.227489 eV Core-core repulsion = 27101.867232 eV Total energy + Delta-G solvation = -3935.360256 eV No. of doubly occupied orbitals = 65 Molecular weight (most abundant/longest-lived isotopes) = 336.220 amu Computer time = 0.81 seconds Orbital eigenvalues (eV) -41.96782 -39.40883 -37.44876 -37.14868 -34.57937 -33.49829 -32.04433 -31.25058 -29.33477 -28.04130 -27.58281 -26.62799 -26.56118 -25.64010 -25.02186 -22.62548 -21.62910 -20.61352 -19.74712 -19.39550 -18.58533 -17.68599 -17.08701 -16.76187 -16.65022 -15.75394 -15.43998 -15.39019 -14.66514 -14.49325 -14.35839 -14.03912 -13.91340 -13.79384 -13.46407 -13.28642 -12.84685 -12.71382 -12.66882 -12.30717 -12.22133 -12.08506 -11.74495 -11.68372 -11.52396 -11.24596 -11.12821 -11.10750 -11.02282 -11.00362 -10.97804 -10.80398 -10.61511 -10.47685 -10.06799 -9.96798 -9.75333 -9.73448 -9.51218 -8.99318 -8.93134 -8.53436 -8.47548 -6.04264 -4.01450 2.55725 3.26319 3.32168 3.40073 3.44599 3.61986 3.87157 3.93560 4.10566 4.20626 4.46086 4.59976 4.64643 4.76509 4.86371 4.91029 4.92395 5.08965 5.15181 5.20503 5.28569 5.29836 5.35765 5.37213 5.42672 5.49207 5.52367 5.55023 5.58082 5.64128 5.67583 5.70597 5.73505 5.87432 5.95030 6.06673 6.11801 6.14287 6.23477 6.33060 6.51387 6.59400 6.73951 6.91400 6.98359 7.01048 7.04841 7.13769 7.21020 7.37349 7.78154 8.07979 8.52723 8.72287 8.99696 9.58611 11.08472 Molecular weight = 336.22amu Principal moments of inertia in cm(-1) A = 0.020668 B = 0.002643 C = 0.002482 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1354.438755 B =10589.731675 C =11277.863955 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.034 3.966 2 O -0.378 6.378 3 C 0.078 3.922 4 H 0.069 0.931 5 C 0.162 3.838 6 H 0.107 0.893 7 C -0.105 4.105 8 H 0.111 0.889 9 C -0.110 4.110 10 C -0.124 4.124 11 H 0.101 0.899 12 C -0.116 4.116 13 C -0.102 4.102 14 H 0.108 0.892 15 C 0.103 3.897 16 N -0.636 5.636 17 C 0.716 3.284 18 O -0.587 6.587 19 N -0.734 5.734 20 C 0.144 3.856 21 C -0.062 4.062 22 C -0.127 4.127 23 C -0.127 4.127 24 C -0.002 4.002 25 C -0.510 4.510 26 H 0.078 0.922 27 C 0.067 3.933 28 N -0.904 5.904 29 Si 0.875 3.125 30 H -0.278 1.278 31 H -0.289 1.289 32 H -0.265 1.265 33 H 0.037 0.963 34 H 0.084 0.916 35 H 0.043 0.957 36 H 0.079 0.921 37 H 0.075 0.925 38 H 0.071 0.929 39 H 0.069 0.931 40 H 0.071 0.929 41 H 0.066 0.934 42 H 0.395 0.605 43 H 0.062 0.938 44 H 0.061 0.939 45 H 0.072 0.928 46 H 0.047 0.953 47 H 0.029 0.971 48 H 0.029 0.971 49 H 0.046 0.954 50 H 0.072 0.928 51 H 0.018 0.982 52 H 0.014 0.986 53 H 0.262 0.738 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 4.278 -12.399 -25.409 28.594 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 -0.063 4.063 2 O -0.296 6.296 3 C 0.018 3.982 4 H 0.087 0.913 5 C 0.058 3.942 6 H 0.125 0.875 7 C -0.123 4.123 8 H 0.129 0.871 9 C -0.148 4.148 10 C -0.142 4.142 11 H 0.119 0.881 12 C -0.154 4.154 13 C -0.120 4.120 14 H 0.126 0.874 15 C -0.020 4.020 16 N -0.375 5.375 17 C 0.418 3.582 18 O -0.465 6.465 19 N -0.390 5.390 20 C 0.021 3.979 21 C -0.063 4.063 22 C -0.184 4.184 23 C -0.184 4.184 24 C -0.040 4.040 25 C -0.548 4.548 26 H 0.096 0.904 27 C -0.134 4.134 28 N -0.543 5.543 29 Si 0.702 3.298 30 H -0.204 1.204 31 H -0.215 1.215 32 H -0.190 1.190 33 H 0.056 0.944 34 H 0.102 0.898 35 H 0.061 0.939 36 H 0.098 0.902 37 H 0.094 0.906 38 H 0.090 0.910 39 H 0.088 0.912 40 H 0.089 0.911 41 H 0.085 0.915 42 H 0.230 0.770 43 H 0.080 0.920 44 H 0.079 0.921 45 H 0.091 0.909 46 H 0.066 0.934 47 H 0.048 0.952 48 H 0.048 0.952 49 H 0.066 0.934 50 H 0.091 0.909 51 H 0.037 0.963 52 H 0.032 0.968 53 H 0.072 0.928 Dipole moment (debyes) X Y Z Total from point charges 3.868 -13.123 -24.726 28.258 hybrid contribution -0.581 0.138 0.614 0.856 sum 3.287 -12.985 -24.111 27.582 Atomic orbital electron populations 1.22752 0.81140 1.02547 0.99861 1.87849 1.19592 1.27394 1.94749 1.24117 0.94768 0.84817 0.94477 0.91286 1.22744 0.92920 0.89001 0.89551 0.87503 1.24058 0.98494 0.95253 0.94539 0.87078 1.23251 0.94564 1.00362 0.96631 1.23951 0.97998 0.95096 0.97188 0.88064 1.22711 0.95625 0.96211 1.00813 1.23163 0.98383 0.95809 0.94682 0.87368 1.22042 0.97146 0.90786 0.92040 1.47736 1.60656 1.13134 1.16016 1.15559 0.79450 0.83876 0.79305 1.90934 1.49202 1.38081 1.68254 1.45354 1.61863 1.12219 1.19518 1.21507 0.97623 0.98140 0.80656 1.20695 0.96379 0.91360 0.97863 1.21761 0.94546 1.03257 0.98885 1.21756 0.99528 1.00850 0.96272 1.19587 0.95657 0.98171 0.90541 1.21075 1.36423 0.95656 1.01667 0.90406 1.24994 0.95721 0.95030 0.97683 1.69902 1.47032 1.18624 1.18786 0.86859 0.80249 0.82043 0.80634 1.20356 1.21523 1.18969 0.94438 0.89754 0.93871 0.90201 0.90593 0.91033 0.91240 0.91104 0.91536 0.77004 0.91999 0.92104 0.90911 0.93386 0.95166 0.95220 0.93441 0.90889 0.96348 0.96765 0.92804 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 0.03 0.33 10.85 101.05 1.10 1.43 16 2 O -0.38 -4.57 10.34 -35.23 -0.36 -4.93 16 3 C 0.08 0.85 2.38 -23.94 -0.06 0.79 16 4 H 0.07 0.89 7.24 -51.92 -0.38 0.52 16 5 C 0.16 1.81 3.76 -64.28 -0.24 1.57 16 6 H 0.11 1.42 8.12 -51.93 -0.42 0.99 16 7 C -0.10 -0.79 4.97 -85.24 -0.42 -1.21 16 8 H 0.11 0.72 8.14 -51.93 -0.42 0.29 16 9 C -0.11 -0.76 6.42 -22.98 -0.15 -0.91 16 10 C -0.12 -0.97 4.92 -85.52 -0.42 -1.39 16 11 H 0.10 0.74 8.14 -51.93 -0.42 0.31 16 12 C -0.12 -0.80 5.76 -24.19 -0.14 -0.94 16 13 C -0.10 -0.66 4.30 -87.05 -0.37 -1.04 16 14 H 0.11 0.50 8.14 -51.93 -0.42 0.08 16 15 C 0.10 0.88 5.44 -3.23 -0.02 0.86 16 16 N -0.64 -7.67 2.61 -166.52 -0.43 -8.10 16 17 C 0.72 11.40 8.38 -86.91 -0.73 10.67 16 18 O -0.59 -11.79 16.67 5.29 0.09 -11.70 16 19 N -0.73 -10.90 4.92 -65.23 -0.32 -11.22 16 20 C 0.14 2.51 4.56 -4.04 -0.02 2.49 16 21 C -0.06 -1.15 0.54 -154.51 -0.08 -1.24 16 22 C -0.13 -2.21 8.05 37.16 0.30 -1.91 16 23 C -0.13 -2.20 8.05 37.16 0.30 -1.90 16 24 C 0.00 -0.04 3.11 -27.88 -0.09 -0.13 16 25 C -0.51 -13.65 8.20 -34.44 -0.28 -13.94 16 26 H 0.08 2.20 5.92 -52.49 -0.31 1.89 16 27 C 0.07 1.89 5.47 -17.82 -0.10 1.79 16 28 N -0.90 -27.24 13.96 55.43 0.77 -26.47 16 29 Si 0.87 21.61 27.47 -169.99 -4.67 16.94 16 30 H -0.28 -6.80 7.11 56.52 0.40 -6.40 16 31 H -0.29 -7.13 7.11 56.52 0.40 -6.73 16 32 H -0.27 -6.36 6.54 56.52 0.37 -5.99 16 33 H 0.04 0.30 8.14 -51.93 -0.42 -0.12 16 34 H 0.08 0.70 8.14 -51.93 -0.42 0.27 16 35 H 0.04 0.47 8.11 -51.93 -0.42 0.05 16 36 H 0.08 0.62 8.08 -51.93 -0.42 0.20 16 37 H 0.08 0.41 8.14 -51.93 -0.42 -0.01 16 38 H 0.07 0.39 8.14 -51.93 -0.42 -0.03 16 39 H 0.07 0.56 7.19 -51.93 -0.37 0.19 16 40 H 0.07 0.57 7.41 -51.93 -0.38 0.19 16 41 H 0.07 0.52 8.14 -51.93 -0.42 0.10 16 42 H 0.39 5.03 4.90 -40.82 -0.20 4.83 16 43 H 0.06 1.14 8.14 -51.93 -0.42 0.72 16 44 H 0.06 1.12 8.14 -51.93 -0.42 0.70 16 45 H 0.07 1.41 6.62 -51.93 -0.34 1.07 16 46 H 0.05 0.84 8.14 -51.93 -0.42 0.42 16 47 H 0.03 0.43 6.86 -51.93 -0.36 0.07 16 48 H 0.03 0.42 6.86 -51.93 -0.36 0.06 16 49 H 0.05 0.83 8.14 -51.93 -0.42 0.41 16 50 H 0.07 1.41 6.62 -51.93 -0.34 1.07 16 51 H 0.02 0.43 7.20 -51.93 -0.37 0.06 16 52 H 0.01 0.33 7.57 -51.93 -0.39 -0.06 16 53 H 0.26 7.47 8.31 -40.82 -0.34 7.13 16 LS Contribution 396.58 15.07 5.98 5.98 Total: -1.00 -32.54 396.58 -9.69 -42.22 By element: Atomic # 1 Polarization: 11.59 SS G_CDS: -9.31 Total: 2.27 kcal Atomic # 6 Polarization: -3.57 SS G_CDS: -1.42 Total: -4.99 kcal Atomic # 7 Polarization: -45.81 SS G_CDS: 0.02 Total: -45.80 kcal Atomic # 8 Polarization: -16.35 SS G_CDS: -0.28 Total: -16.63 kcal Atomic # 14 Polarization: 21.61 SS G_CDS: -4.67 Total: 16.94 kcal Total LS contribution 5.98 Total: 5.98 kcal Total: -32.54 -9.69 -42.22 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. ZINC000377039995.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 -23.594 kcal (2) G-P(sol) polarization free energy of solvation -32.535 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -56.129 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.688 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -42.223 kcal (6) G-S(sol) free energy of system = (1) + (5) -65.817 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.81 seconds