Wall clock time and date at job start Sat Apr 11 2020 06:12:05 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= -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 1.53002 * 1 3 3 H 1.08993 * 109.47168 * 2 1 4 4 C 1.50699 * 109.47147 * 239.99902 * 2 1 3 5 5 H 1.08001 * 120.00165 * 240.00117 * 4 2 1 6 6 C 1.37880 * 119.99725 * 59.99937 * 4 2 1 7 7 N 1.31515 * 120.00045 * 179.97438 * 6 4 2 8 8 Si 1.86796 * 120.00282 * 0.02562 * 6 4 2 9 9 H 1.48502 * 109.47384 * 270.00030 * 8 6 4 10 10 H 1.48497 * 109.47471 * 149.99306 * 8 6 4 11 11 H 1.48506 * 109.46924 * 29.99631 * 8 6 4 12 12 N 1.46504 * 109.47026 * 120.00063 * 2 1 3 13 13 C 1.46506 * 119.99967 * 60.00071 * 12 2 1 14 14 C 1.34767 * 119.99981 * 239.99905 * 12 2 1 15 15 O 1.21285 * 120.00045 * 354.96570 * 14 12 2 16 16 C 1.50706 * 120.00020 * 174.96629 * 14 12 2 17 17 H 1.08997 * 112.74008 * 335.31956 * 16 14 12 18 18 N 1.47066 * 113.46875 * 204.57207 * 16 14 12 19 19 C 1.34779 * 136.05407 * 92.30159 * 18 16 14 20 20 O 1.21515 * 120.00092 * 0.02562 * 19 18 16 21 21 O 1.34640 * 120.00036 * 179.97438 * 19 18 16 22 22 C 1.45203 * 116.99782 * 180.02562 * 21 19 18 23 23 C 1.52997 * 109.46983 * 60.00513 * 22 21 19 24 24 C 1.53002 * 109.46782 * 180.02562 * 22 21 19 25 25 C 1.53000 * 109.47072 * 300.00193 * 22 21 19 26 26 C 1.47063 * 87.89111 * 272.34407 * 18 16 14 27 27 C 1.53496 * 113.46631 * 106.06604 * 16 14 12 28 28 C 1.53001 * 114.20562 * 202.30071 * 27 16 14 29 29 C 1.53003 * 114.20725 * 335.12055 * 27 16 14 30 30 H 1.08995 * 109.47176 * 59.99794 * 1 2 3 31 31 H 1.09006 * 109.47057 * 179.97438 * 1 2 3 32 32 H 1.08997 * 109.47247 * 299.99400 * 1 2 3 33 33 H 0.96994 * 120.00603 * 179.97438 * 7 6 4 34 34 H 1.09005 * 109.46622 * 95.46930 * 13 12 2 35 35 H 1.08994 * 109.46964 * 215.46849 * 13 12 2 36 36 H 1.09003 * 109.47079 * 335.47513 * 13 12 2 37 37 H 1.08999 * 109.47271 * 60.00144 * 23 22 21 38 38 H 1.09001 * 109.46706 * 179.97438 * 23 22 21 39 39 H 1.09002 * 109.47203 * 299.99159 * 23 22 21 40 40 H 1.08998 * 109.47247 * 59.99717 * 24 22 21 41 41 H 1.08992 * 109.47025 * 180.02562 * 24 22 21 42 42 H 1.09006 * 109.47074 * 300.00051 * 24 22 21 43 43 H 1.09005 * 109.47095 * 60.00330 * 25 22 21 44 44 H 1.09005 * 109.46648 * 180.02562 * 25 22 21 45 45 H 1.09000 * 109.47433 * 299.99951 * 25 22 21 46 46 H 1.08997 * 113.47154 * 87.65600 * 26 18 16 47 47 H 1.08990 * 113.46860 * 218.04425 * 26 18 16 48 48 H 1.08999 * 109.46971 * 60.00188 * 28 27 16 49 49 H 1.08998 * 109.47229 * 179.97438 * 28 27 16 50 50 H 1.08996 * 109.47374 * 299.99779 * 28 27 16 51 51 H 1.09004 * 109.46763 * 55.08326 * 29 27 16 52 52 H 1.08998 * 109.47293 * 175.07642 * 29 27 16 53 53 H 1.08992 * 109.47511 * 295.08276 * 29 27 16 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 1 1.8933 1.0276 0.0000 4 6 2.0324 -0.7104 -1.2304 5 1 2.6533 -1.5885 -1.1314 6 6 1.6992 -0.2393 -2.4827 7 7 2.1380 -0.8590 -3.5566 8 14 0.6259 1.2798 -2.6541 9 1 -0.8021 0.8746 -2.6993 10 1 0.9772 1.9954 -3.9070 11 1 0.8492 2.1773 -1.4922 12 7 2.0183 -0.6906 1.1962 13 6 1.6644 -2.0933 1.4280 14 6 2.7931 -0.0357 2.0833 15 8 3.1617 1.0955 1.8476 16 6 3.2017 -0.7089 3.3682 17 1 2.5092 -1.4942 3.6712 18 7 3.5241 0.2362 4.4479 19 6 2.8519 0.8187 5.4605 20 8 1.6721 0.5783 5.6243 21 8 3.4878 1.6662 6.2912 22 6 2.7014 2.2562 7.3598 23 6 2.1420 1.1473 8.2532 24 6 3.5878 3.1844 8.1926 25 6 1.5457 3.0590 6.7590 26 6 4.9023 0.2669 3.9358 27 6 4.6719 -1.1499 3.3867 28 6 4.9792 -2.2674 4.3855 29 6 5.2717 -1.3920 2.0001 30 1 -0.3633 0.5138 -0.8899 31 1 -0.3633 -1.0277 -0.0005 32 1 -0.3633 0.5137 0.8900 33 1 1.9034 -0.5279 -4.4375 34 1 2.4633 -2.7356 1.0574 35 1 1.5286 -2.2619 2.4962 36 1 0.7381 -2.3258 0.9027 37 1 2.9653 0.5754 8.6812 38 1 1.5520 1.5902 9.0556 39 1 1.5103 0.4864 7.6596 40 1 3.9861 3.9743 7.5559 41 1 2.9977 3.6268 8.9950 42 1 4.4114 2.6127 8.6206 43 1 0.9141 2.3980 6.1654 44 1 0.9557 3.5022 7.5613 45 1 1.9443 3.8490 6.1225 46 1 5.0598 1.0137 3.1576 47 1 5.6564 0.3117 4.7215 48 1 4.3846 -3.1474 4.1404 49 1 6.0384 -2.5193 4.3343 50 1 4.7335 -1.9319 5.3930 51 1 5.1423 -0.4997 1.3874 52 1 6.3342 -1.6147 2.0976 53 1 4.7659 -2.2338 1.5273 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 ZINC000793418445.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 06:12:05 Heat of formation + Delta-G solvation = -63.304417 kcal Electronic energy + Delta-G solvation = -32569.313672 eV Core-core repulsion = 28443.606327 eV Total energy + Delta-G solvation = -4125.707344 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 1.85 seconds Orbital eigenvalues (eV) -41.51052 -40.21121 -38.19329 -36.61825 -35.50712 -34.16022 -32.83859 -32.38533 -30.62133 -27.71001 -27.57987 -27.49355 -27.18928 -26.51349 -26.28885 -25.10605 -22.42163 -21.47122 -19.63526 -19.31913 -18.02747 -17.52120 -17.21427 -16.77182 -16.47734 -15.96949 -15.65851 -15.25778 -15.12841 -14.67011 -14.33011 -14.24622 -13.92208 -13.66194 -13.55030 -13.07168 -12.96034 -12.66851 -12.60111 -12.39550 -12.26877 -12.22134 -12.09271 -12.03894 -12.02674 -11.95643 -11.83892 -11.63413 -11.57342 -11.52407 -11.25188 -11.19681 -11.06512 -10.71607 -10.44940 -10.27122 -10.17035 -10.00515 -9.76796 -9.59862 -9.33701 -8.66048 -8.44848 -7.80241 -6.17121 -4.17731 1.84011 2.87530 3.00548 3.22224 3.35691 3.38421 3.65588 3.83964 4.09901 4.33294 4.57354 4.61174 4.69572 4.75651 4.79190 4.93591 5.08667 5.14766 5.17386 5.28857 5.33580 5.37906 5.43914 5.51336 5.57428 5.60010 5.65490 5.68559 5.72602 5.77296 5.82812 5.87769 5.91951 5.94229 5.98680 6.08959 6.14874 6.19405 6.23772 6.24304 6.31980 6.43029 6.46140 6.47018 6.81942 7.05394 7.26285 7.59032 7.70465 8.09185 8.35359 8.41826 8.75037 8.84846 9.44007 10.95413 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.014551 B = 0.003481 C = 0.003090 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1923.789440 B = 8041.942172 C = 9059.405454 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.163 4.163 2 C 0.230 3.770 3 H 0.062 0.938 4 C -0.525 4.525 5 H 0.080 0.920 6 C 0.077 3.923 7 N -0.894 5.894 8 Si 0.881 3.119 9 H -0.277 1.277 10 H -0.294 1.294 11 H -0.264 1.264 12 N -0.577 5.577 13 C 0.081 3.919 14 C 0.510 3.490 15 O -0.540 6.540 16 C 0.139 3.861 17 H 0.108 0.892 18 N -0.611 5.611 19 C 0.685 3.315 20 O -0.568 6.568 21 O -0.359 6.359 22 C 0.135 3.865 23 C -0.182 4.182 24 C -0.139 4.139 25 C -0.184 4.184 26 C 0.112 3.888 27 C -0.082 4.082 28 C -0.122 4.122 29 C -0.141 4.141 30 H 0.051 0.949 31 H 0.057 0.943 32 H 0.033 0.967 33 H 0.266 0.734 34 H 0.057 0.943 35 H 0.054 0.946 36 H 0.080 0.920 37 H 0.058 0.942 38 H 0.069 0.931 39 H 0.088 0.912 40 H 0.067 0.933 41 H 0.079 0.921 42 H 0.065 0.935 43 H 0.088 0.912 44 H 0.069 0.931 45 H 0.060 0.940 46 H 0.103 0.897 47 H 0.079 0.921 48 H 0.066 0.934 49 H 0.068 0.932 50 H 0.058 0.942 51 H 0.073 0.927 52 H 0.066 0.934 53 H 0.069 0.931 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 4.645 -0.318 21.730 22.223 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 -0.221 4.221 2 C 0.129 3.871 3 H 0.080 0.920 4 C -0.564 4.564 5 H 0.098 0.902 6 C -0.126 4.126 7 N -0.531 5.531 8 Si 0.711 3.289 9 H -0.204 1.204 10 H -0.221 1.221 11 H -0.189 1.189 12 N -0.308 5.308 13 C -0.062 4.062 14 C 0.295 3.705 15 O -0.418 6.418 16 C 0.032 3.968 17 H 0.125 0.875 18 N -0.351 5.351 19 C 0.441 3.559 20 O -0.457 6.457 21 O -0.274 6.274 22 C 0.098 3.902 23 C -0.239 4.239 24 C -0.196 4.196 25 C -0.242 4.242 26 C -0.011 4.011 27 C -0.084 4.084 28 C -0.179 4.179 29 C -0.198 4.198 30 H 0.069 0.931 31 H 0.076 0.924 32 H 0.052 0.948 33 H 0.076 0.924 34 H 0.076 0.924 35 H 0.073 0.927 36 H 0.098 0.902 37 H 0.077 0.923 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 0.106 0.894 44 H 0.088 0.912 45 H 0.079 0.921 46 H 0.121 0.879 47 H 0.098 0.902 48 H 0.085 0.915 49 H 0.087 0.913 50 H 0.077 0.923 51 H 0.092 0.908 52 H 0.085 0.915 53 H 0.088 0.912 Dipole moment (debyes) X Y Z Total from point charges 4.319 0.375 21.710 22.138 hybrid contribution -0.907 0.827 -0.298 1.263 sum 3.412 1.202 21.412 21.715 Atomic orbital electron populations 1.22476 0.99033 1.01199 0.99357 1.19328 0.89950 0.95150 0.82710 0.92033 1.21119 1.32733 1.14210 0.88296 0.90162 1.24842 0.95616 0.96480 0.95658 1.69862 1.45141 1.40174 0.97967 0.86953 0.80523 0.83956 0.77479 1.20387 1.22110 1.18916 1.47821 1.48371 1.11875 1.22700 1.21726 1.02219 0.82499 0.99752 1.20101 0.79306 0.86636 0.84500 1.90652 1.54930 1.18939 1.77263 1.22681 0.99287 0.89498 0.85291 0.87473 1.47839 1.13493 1.47525 1.26244 1.17193 0.82421 0.77173 0.79074 1.90892 1.14187 1.65919 1.74747 1.86310 1.43644 1.56633 1.40819 1.22069 0.90975 0.92769 0.84373 1.22515 1.02131 0.99284 1.00018 1.21844 0.99858 0.98809 0.99108 1.22520 0.98530 1.00926 1.02180 1.23422 0.83180 0.96410 0.98060 1.22195 0.92590 0.95589 0.97997 1.21525 1.02227 0.96630 0.97559 1.21748 1.00816 1.03874 0.93409 0.93056 0.92391 0.94791 0.92420 0.92433 0.92737 0.90178 0.92262 0.91241 0.89342 0.91430 0.90207 0.91552 0.89359 0.91224 0.92071 0.87900 0.90224 0.91527 0.91286 0.92273 0.90845 0.91468 0.91187 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 -0.16 -3.55 8.66 37.16 0.32 -3.22 16 2 C 0.23 5.50 2.22 -69.08 -0.15 5.34 16 3 H 0.06 1.65 5.97 -51.93 -0.31 1.34 16 4 C -0.53 -14.12 8.95 -34.44 -0.31 -14.43 16 5 H 0.08 2.29 7.89 -52.49 -0.41 1.88 16 6 C 0.08 2.16 5.45 -17.82 -0.10 2.06 16 7 N -0.89 -26.43 13.96 55.43 0.77 -25.66 16 8 Si 0.88 21.78 24.37 -169.99 -4.14 17.63 16 9 H -0.28 -6.57 6.87 56.52 0.39 -6.19 16 10 H -0.29 -7.28 7.11 56.52 0.40 -6.87 16 11 H -0.26 -6.52 6.53 56.52 0.37 -6.15 16 12 N -0.58 -11.65 2.75 -175.26 -0.48 -12.13 16 13 C 0.08 1.30 9.44 59.85 0.56 1.86 16 14 C 0.51 10.08 5.43 -10.99 -0.06 10.02 16 15 O -0.54 -12.54 14.41 5.55 0.08 -12.46 16 16 C 0.14 2.15 3.61 -73.53 -0.27 1.88 16 17 H 0.11 1.53 6.02 -51.93 -0.31 1.21 16 18 N -0.61 -9.66 3.14 -184.28 -0.58 -10.24 16 19 C 0.68 11.49 8.26 54.06 0.45 11.94 16 20 O -0.57 -10.52 12.66 -19.28 -0.24 -10.76 16 21 O -0.36 -5.29 9.91 -40.32 -0.40 -5.69 16 22 C 0.13 1.59 1.13 -90.62 -0.10 1.49 16 23 C -0.18 -1.97 8.37 37.16 0.31 -1.65 16 24 C -0.14 -1.19 8.85 37.16 0.33 -0.86 16 25 C -0.18 -2.27 8.37 37.16 0.31 -1.96 16 26 C 0.11 1.50 7.29 -8.40 -0.06 1.44 16 27 C -0.08 -1.00 1.50 -153.89 -0.23 -1.23 16 28 C -0.12 -1.12 9.23 37.16 0.34 -0.78 16 29 C -0.14 -1.80 8.57 37.16 0.32 -1.48 16 30 H 0.05 1.16 3.27 -51.93 -0.17 0.99 16 31 H 0.06 1.16 6.67 -51.93 -0.35 0.81 16 32 H 0.03 0.68 8.14 -51.93 -0.42 0.26 16 33 H 0.27 7.42 8.31 -40.82 -0.34 7.08 16 34 H 0.06 0.86 8.14 -51.93 -0.42 0.44 16 35 H 0.05 0.71 5.96 -51.93 -0.31 0.40 16 36 H 0.08 1.29 6.44 -51.93 -0.33 0.95 16 37 H 0.06 0.59 8.14 -51.93 -0.42 0.16 16 38 H 0.07 0.59 8.14 -51.93 -0.42 0.17 16 39 H 0.09 1.18 5.88 -51.93 -0.31 0.88 16 40 H 0.07 0.59 8.14 -51.93 -0.42 0.16 16 41 H 0.08 0.51 8.14 -51.93 -0.42 0.09 16 42 H 0.07 0.52 8.14 -51.93 -0.42 0.10 16 43 H 0.09 1.35 5.88 -51.93 -0.31 1.04 16 44 H 0.07 0.67 8.14 -51.93 -0.42 0.25 16 45 H 0.06 0.76 8.14 -51.93 -0.42 0.34 16 46 H 0.10 1.58 6.77 -51.93 -0.35 1.23 16 47 H 0.08 0.87 8.12 -51.93 -0.42 0.45 16 48 H 0.07 0.56 8.14 -51.93 -0.42 0.14 16 49 H 0.07 0.52 8.14 -51.93 -0.42 0.10 16 50 H 0.06 0.57 7.92 -51.93 -0.41 0.16 16 51 H 0.07 1.18 6.93 -51.93 -0.36 0.82 16 52 H 0.07 0.69 8.14 -51.93 -0.42 0.27 16 53 H 0.07 0.90 8.14 -51.93 -0.42 0.48 16 LS Contribution 404.92 15.07 6.10 6.10 Total: -1.00 -33.53 404.92 -6.25 -39.79 By element: Atomic # 1 Polarization: 12.02 SS G_CDS: -9.03 Total: 2.99 kcal Atomic # 6 Polarization: 8.76 SS G_CDS: 1.67 Total: 10.43 kcal Atomic # 7 Polarization: -47.74 SS G_CDS: -0.29 Total: -48.03 kcal Atomic # 8 Polarization: -28.35 SS G_CDS: -0.56 Total: -28.91 kcal Atomic # 14 Polarization: 21.78 SS G_CDS: -4.14 Total: 17.63 kcal Total LS contribution 6.10 Total: 6.10 kcal Total: -33.53 -6.25 -39.79 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. ZINC000793418445.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 -23.519 kcal (2) G-P(sol) polarization free energy of solvation -33.532 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -57.051 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -6.254 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -39.785 kcal (6) G-S(sol) free energy of system = (1) + (5) -63.304 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.85 seconds