Wall clock time and date at job start Tue Mar 31 2020 20:24:00 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 1.53005 * 1 3 3 C 1.53000 * 109.46967 * 2 1 4 4 H 1.08995 * 109.47280 * 303.17849 * 3 2 1 5 5 C 1.50702 * 109.46705 * 183.17691 * 3 2 1 6 6 H 1.07998 * 119.99905 * 239.99867 * 5 3 2 7 7 C 1.37882 * 120.00069 * 60.00265 * 5 3 2 8 8 N 1.31516 * 119.99528 * 359.97438 * 7 5 3 9 9 Si 1.86799 * 120.00102 * 179.97438 * 7 5 3 10 10 H 1.48500 * 109.46866 * 90.00083 * 9 7 5 11 11 H 1.48500 * 109.46929 * 209.99517 * 9 7 5 12 12 H 1.48498 * 109.47107 * 329.99984 * 9 7 5 13 13 N 1.46901 * 109.47114 * 63.18258 * 3 2 1 14 14 C 1.46843 * 111.00222 * 65.46056 * 13 3 2 15 15 C 1.53033 * 109.50254 * 185.88379 * 14 13 3 16 16 H 1.09003 * 109.50317 * 60.77572 * 15 14 13 17 17 N 1.46497 * 109.50375 * 180.84869 * 15 14 13 18 18 C 1.34773 * 120.00123 * 275.00328 * 17 15 14 19 19 O 1.21288 * 119.99999 * 359.97438 * 18 17 15 20 20 C 1.50701 * 120.00227 * 179.97438 * 18 17 15 21 21 C 1.53001 * 117.49836 * 248.61764 * 20 18 17 22 22 C 1.52999 * 60.00131 * 252.51075 * 21 20 18 23 23 C 1.53105 * 109.29270 * 300.79574 * 15 14 13 24 24 H 1.09002 * 109.52440 * 177.52686 * 23 15 14 25 25 O 1.42868 * 109.40528 * 297.80276 * 23 15 14 26 26 C 1.42899 * 114.15232 * 180.63231 * 25 23 15 27 27 C 1.53101 * 109.40048 * 298.84308 * 26 25 23 28 28 C 1.53173 * 109.13600 * 57.67092 * 27 26 25 29 29 C 1.53125 * 109.20202 * 57.58266 * 23 15 14 30 30 H 1.08995 * 109.79693 * 62.70222 * 29 23 15 31 31 C 1.46845 * 110.99730 * 189.67065 * 13 3 2 32 32 H 1.09008 * 109.47115 * 300.00192 * 1 2 3 33 33 H 1.08999 * 109.47132 * 59.99744 * 1 2 3 34 34 H 1.08998 * 109.47355 * 180.02562 * 1 2 3 35 35 H 1.08995 * 109.46829 * 239.99721 * 2 1 3 36 36 H 1.09002 * 109.46549 * 119.99797 * 2 1 3 37 37 H 0.97006 * 119.99889 * 180.02562 * 8 7 5 38 38 H 1.09003 * 109.46301 * 305.88964 * 14 13 3 39 39 H 1.08998 * 109.46907 * 65.87358 * 14 13 3 40 40 H 0.97003 * 120.00240 * 94.99725 * 17 15 14 41 41 H 1.09005 * 115.55108 * 34.32403 * 20 18 17 42 42 H 1.09003 * 117.50059 * 0.02562 * 21 20 18 43 43 H 1.09008 * 117.49666 * 145.01830 * 21 20 18 44 44 H 1.09000 * 117.49307 * 252.51068 * 22 21 20 45 45 H 1.08988 * 117.49763 * 107.49093 * 22 21 20 46 46 H 1.08997 * 109.48689 * 58.82264 * 26 25 23 47 47 H 1.09002 * 109.48382 * 178.86820 * 26 25 23 48 48 H 1.09003 * 109.52804 * 297.76860 * 27 26 25 49 49 H 1.09006 * 109.52187 * 177.56562 * 27 26 25 50 50 H 1.08995 * 109.53638 * 183.10880 * 28 27 26 51 51 H 1.09005 * 109.53695 * 62.86258 * 28 27 26 52 52 H 1.08998 * 109.46074 * 54.14705 * 31 13 3 53 53 H 1.09004 * 109.45400 * 294.20284 * 31 13 3 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 2.0400 1.4425 0.0000 4 1 1.6309 1.9725 -0.8601 5 6 3.5450 1.4432 -0.0787 6 1 4.1268 1.8960 0.7104 7 6 4.1791 0.8657 -1.1583 8 7 3.4705 0.3139 -2.1191 9 14 6.0445 0.8671 -1.2563 10 1 6.5753 -0.3576 -0.6055 11 1 6.4654 0.8930 -2.6802 12 1 6.5758 2.0670 -0.5611 13 7 1.6141 2.1124 1.2360 14 6 2.2512 1.5040 2.4109 15 6 1.6752 2.1269 3.6845 16 1 0.6026 1.9380 3.7290 17 7 2.3252 1.5343 4.8560 18 6 1.8641 0.3764 5.3688 19 8 0.9106 -0.1748 4.8607 20 6 2.5331 -0.2335 6.5736 21 6 3.3019 -1.5403 6.3688 22 6 1.9625 -1.5486 7.1083 23 6 1.9287 3.6367 3.6684 24 1 1.4815 4.0906 4.5528 25 8 3.3362 3.8817 3.6608 26 6 3.6887 5.2665 3.6600 27 6 3.1319 5.9323 2.3987 28 6 1.6132 5.7377 2.3569 29 6 1.2991 4.2398 2.4095 30 1 0.2192 4.0940 2.4307 31 6 1.8841 3.5545 1.1728 32 1 -0.3634 0.5139 0.8900 33 1 -0.3633 0.5139 -0.8899 34 1 -0.3634 -1.0276 0.0005 35 1 1.8933 -0.5139 -0.8899 36 1 1.8933 -0.5138 0.8900 37 1 3.9166 -0.0928 -2.8785 38 1 2.0598 0.4308 2.4128 39 1 3.3260 1.6811 2.3739 40 1 3.0876 1.9753 5.2626 41 1 2.9297 0.4755 7.3004 42 1 3.3242 -1.9587 5.3625 43 1 4.2047 -1.6912 6.9608 44 1 1.9842 -1.7050 8.1868 45 1 1.1034 -1.9726 6.5888 46 1 3.2677 5.7494 4.5419 47 1 4.7741 5.3654 3.6743 48 1 3.5822 5.4762 1.5170 49 1 3.3624 6.9976 2.4171 50 1 1.2168 6.1612 1.4341 51 1 1.1581 6.2359 3.2130 52 1 1.4255 3.9708 0.2759 53 1 2.9608 3.7212 1.1406 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 ZINC001255170917.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 20:24:00 Heat of formation + Delta-G solvation = -59.400065 kcal Electronic energy + Delta-G solvation = -32199.118585 eV Core-core repulsion = 28264.036598 eV Total energy + Delta-G solvation = -3935.081987 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) -40.49688 -39.40667 -37.06928 -36.17855 -34.75595 -34.08410 -32.58383 -31.51015 -30.29419 -28.90789 -26.55323 -25.20142 -24.46459 -23.83681 -22.97099 -22.46815 -21.90655 -20.90322 -19.92619 -18.92192 -18.54177 -17.43969 -16.47255 -16.13609 -15.89462 -15.72484 -15.17661 -14.86842 -14.79158 -14.58340 -14.14470 -14.03628 -13.71832 -13.34262 -12.96288 -12.74057 -12.68928 -12.46409 -12.42773 -12.16628 -11.97949 -11.60822 -11.43053 -11.33842 -11.15024 -10.99570 -10.87217 -10.78946 -10.67252 -10.57989 -10.50401 -10.46206 -10.33944 -10.02165 -9.85943 -9.63476 -9.55320 -9.23835 -9.22003 -8.99034 -8.65900 -8.30902 -7.03153 -5.93322 -4.05816 2.68531 3.25964 3.28941 3.36137 3.38921 3.87083 3.88062 4.43528 4.69743 4.76302 4.80237 4.84912 4.89965 4.95577 5.05016 5.10753 5.19157 5.27165 5.30586 5.39399 5.47292 5.53986 5.65563 5.67469 5.78342 5.84916 5.91812 5.94640 6.01113 6.02134 6.08451 6.10906 6.24682 6.35694 6.40295 6.55570 6.57909 6.63371 6.73442 6.80615 6.90944 7.00161 7.24419 7.27420 7.35690 7.44863 7.69088 7.76654 7.84559 8.03734 8.22200 8.38833 8.47676 8.54902 9.04334 9.61085 11.05858 Molecular weight = 336.22amu Principal moments of inertia in cm(-1) A = 0.007930 B = 0.005293 C = 0.004143 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 3530.075191 B = 5289.031203 C = 6756.116937 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.137 4.137 2 C -0.110 4.110 3 C 0.218 3.782 4 H 0.038 0.962 5 C -0.539 4.539 6 H 0.058 0.942 7 C 0.068 3.932 8 N -0.886 5.886 9 Si 0.885 3.115 10 H -0.282 1.282 11 H -0.287 1.287 12 H -0.276 1.276 13 N -0.532 5.532 14 C 0.062 3.938 15 C 0.156 3.844 16 H 0.099 0.901 17 N -0.714 5.714 18 C 0.539 3.461 19 O -0.537 6.537 20 C -0.193 4.193 21 C -0.153 4.153 22 C -0.150 4.150 23 C 0.093 3.907 24 H 0.054 0.946 25 O -0.371 6.371 26 C 0.065 3.935 27 C -0.160 4.160 28 C -0.112 4.112 29 C -0.113 4.113 30 H 0.083 0.917 31 C 0.071 3.929 32 H 0.049 0.951 33 H 0.037 0.963 34 H 0.024 0.976 35 H 0.091 0.909 36 H 0.032 0.968 37 H 0.260 0.740 38 H 0.073 0.927 39 H 0.049 0.951 40 H 0.402 0.598 41 H 0.120 0.880 42 H 0.102 0.898 43 H 0.102 0.898 44 H 0.099 0.901 45 H 0.108 0.892 46 H 0.043 0.957 47 H 0.089 0.911 48 H 0.081 0.919 49 H 0.067 0.933 50 H 0.069 0.931 51 H 0.058 0.942 52 H 0.062 0.938 53 H 0.047 0.953 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -1.283 7.080 16.097 17.632 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 -0.194 4.194 2 C -0.148 4.148 3 C 0.112 3.888 4 H 0.055 0.945 5 C -0.578 4.578 6 H 0.076 0.924 7 C -0.134 4.134 8 N -0.525 5.525 9 Si 0.713 3.287 10 H -0.208 1.208 11 H -0.213 1.213 12 H -0.201 1.201 13 N -0.256 5.256 14 C -0.068 4.068 15 C 0.051 3.949 16 H 0.117 0.883 17 N -0.365 5.365 18 C 0.325 3.675 19 O -0.414 6.414 20 C -0.214 4.214 21 C -0.190 4.190 22 C -0.187 4.187 23 C 0.035 3.965 24 H 0.071 0.929 25 O -0.290 6.290 26 C -0.012 4.012 27 C -0.198 4.198 28 C -0.150 4.150 29 C -0.133 4.133 30 H 0.102 0.898 31 C -0.058 4.058 32 H 0.068 0.932 33 H 0.056 0.944 34 H 0.043 0.957 35 H 0.109 0.891 36 H 0.050 0.950 37 H 0.070 0.930 38 H 0.091 0.909 39 H 0.067 0.933 40 H 0.237 0.763 41 H 0.138 0.862 42 H 0.120 0.880 43 H 0.120 0.880 44 H 0.118 0.882 45 H 0.126 0.874 46 H 0.061 0.939 47 H 0.108 0.892 48 H 0.099 0.901 49 H 0.085 0.915 50 H 0.088 0.912 51 H 0.077 0.923 52 H 0.081 0.919 53 H 0.065 0.935 Dipole moment (debyes) X Y Z Total from point charges -2.337 6.380 15.564 16.983 hybrid contribution 2.277 0.680 -0.052 2.377 sum -0.060 7.060 15.513 17.044 Atomic orbital electron populations 1.21691 0.98839 0.98408 1.00470 1.21582 0.92266 0.99109 1.01833 1.19235 0.92786 0.91038 0.85748 0.94453 1.21757 0.92731 1.37310 1.05966 0.92404 1.24895 0.97684 0.95173 0.95641 1.69884 1.34787 1.37986 1.09807 0.86715 0.86581 0.78347 0.77063 1.20798 1.21305 1.20106 1.62338 1.57609 1.01475 1.04148 1.22113 0.97516 0.98993 0.88146 1.21144 0.98440 0.89351 0.85932 0.88272 1.45850 1.34894 1.24393 1.31341 1.19616 0.83445 0.80599 0.83801 1.90722 1.27789 1.61177 1.61692 1.22190 1.06967 0.92627 0.99655 1.22941 0.95828 0.97297 1.02972 1.22925 0.98096 0.97454 1.00236 1.22312 0.82238 0.95146 0.96807 0.92850 1.87934 1.22341 1.23936 1.94767 1.22493 1.00107 0.82328 0.96237 1.22239 0.96733 1.00650 1.00151 1.21541 0.95708 0.95765 1.01988 1.21748 1.01057 0.94389 0.96115 0.89847 1.21856 0.99281 0.89735 0.94892 0.93232 0.94422 0.95710 0.89125 0.94952 0.93007 0.90874 0.93323 0.76339 0.86217 0.87986 0.87986 0.88233 0.87390 0.93855 0.89237 0.90084 0.91472 0.91235 0.92346 0.91934 0.93466 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 -0.14 -2.96 9.79 37.16 0.36 -2.60 16 2 C -0.11 -2.70 5.11 -26.73 -0.14 -2.84 16 3 C 0.22 5.40 1.73 -68.86 -0.12 5.28 16 4 H 0.04 1.02 7.99 -51.93 -0.42 0.61 16 5 C -0.54 -14.40 7.23 -34.44 -0.25 -14.65 16 6 H 0.06 1.58 5.84 -52.49 -0.31 1.27 16 7 C 0.07 1.87 5.30 -17.82 -0.09 1.77 16 8 N -0.89 -25.09 11.30 55.43 0.63 -24.46 16 9 Si 0.88 21.37 29.54 -169.99 -5.02 16.35 16 10 H -0.28 -6.83 7.11 56.52 0.40 -6.42 16 11 H -0.29 -6.90 7.11 56.52 0.40 -6.50 16 12 H -0.28 -6.62 7.11 56.52 0.40 -6.22 16 13 N -0.53 -11.17 3.98 -228.10 -0.91 -12.07 16 14 C 0.06 1.26 4.22 -3.84 -0.02 1.24 16 15 C 0.16 2.57 2.40 -67.86 -0.16 2.41 16 16 H 0.10 1.78 7.58 -51.93 -0.39 1.39 16 17 N -0.71 -10.31 5.05 -53.74 -0.27 -10.58 16 18 C 0.54 8.27 7.58 -10.99 -0.08 8.18 16 19 O -0.54 -10.40 15.92 5.55 0.09 -10.31 16 20 C -0.19 -2.19 6.19 -91.77 -0.57 -2.76 16 21 C -0.15 -1.63 10.23 -26.73 -0.27 -1.90 16 22 C -0.15 -1.57 10.04 -26.73 -0.27 -1.84 16 23 C 0.09 1.33 2.49 -26.61 -0.07 1.26 16 24 H 0.05 0.68 8.14 -51.93 -0.42 0.25 16 25 O -0.37 -5.43 8.65 -35.23 -0.30 -5.73 16 26 C 0.07 0.76 6.84 37.21 0.25 1.01 16 27 C -0.16 -1.89 5.77 -26.59 -0.15 -2.04 16 28 C -0.11 -1.33 5.52 -26.57 -0.15 -1.48 16 29 C -0.11 -1.66 2.67 -90.48 -0.24 -1.90 16 30 H 0.08 1.21 8.14 -51.93 -0.42 0.79 16 31 C 0.07 1.32 4.07 -3.85 -0.02 1.31 16 32 H 0.05 1.05 7.70 -51.92 -0.40 0.65 16 33 H 0.04 0.80 8.14 -51.93 -0.42 0.37 16 34 H 0.02 0.49 8.14 -51.93 -0.42 0.07 16 35 H 0.09 2.48 5.99 -51.93 -0.31 2.16 16 36 H 0.03 0.81 6.28 -51.93 -0.33 0.49 16 37 H 0.26 7.08 8.31 -40.82 -0.34 6.74 16 38 H 0.07 1.69 6.14 -51.93 -0.32 1.37 16 39 H 0.05 1.10 6.00 -51.93 -0.31 0.79 16 40 H 0.40 4.96 8.12 -40.82 -0.33 4.63 16 41 H 0.12 1.04 8.14 -51.93 -0.42 0.62 16 42 H 0.10 1.27 8.14 -51.93 -0.42 0.85 16 43 H 0.10 0.85 8.14 -51.92 -0.42 0.42 16 44 H 0.10 0.79 8.14 -51.93 -0.42 0.37 16 45 H 0.11 1.33 7.67 -51.94 -0.40 0.93 16 46 H 0.04 0.43 8.14 -51.93 -0.42 0.01 16 47 H 0.09 0.96 8.14 -51.93 -0.42 0.54 16 48 H 0.08 1.15 6.58 -51.93 -0.34 0.81 16 49 H 0.07 0.65 8.14 -51.93 -0.42 0.23 16 50 H 0.07 0.81 8.14 -51.93 -0.42 0.38 16 51 H 0.06 0.60 8.14 -51.93 -0.42 0.18 16 52 H 0.06 1.19 8.02 -51.93 -0.42 0.78 16 53 H 0.05 0.98 5.20 -51.93 -0.27 0.71 16 LS Contribution 396.20 15.07 5.97 5.97 Total: -1.00 -30.17 396.20 -10.97 -41.13 By element: Atomic # 1 Polarization: 18.42 SS G_CDS: -9.17 Total: 9.25 kcal Atomic # 6 Polarization: -7.56 SS G_CDS: -1.98 Total: -9.54 kcal Atomic # 7 Polarization: -46.57 SS G_CDS: -0.55 Total: -47.12 kcal Atomic # 8 Polarization: -15.82 SS G_CDS: -0.22 Total: -16.04 kcal Atomic # 14 Polarization: 21.37 SS G_CDS: -5.02 Total: 16.35 kcal Total LS contribution 5.97 Total: 5.97 kcal Total: -30.17 -10.97 -41.13 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. ZINC001255170917.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 -18.267 kcal (2) G-P(sol) polarization free energy of solvation -30.166 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -48.433 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.967 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -41.133 kcal (6) G-S(sol) free energy of system = (1) + (5) -59.400 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.81 seconds