Wall clock time and date at job start Sat Mar 6 2021 22:22:09 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 * SM5.42R - SM5.42R CALCULATIONS WILL BE PERFORMED * - CHARGE MODEL 2 WILL BE USED (CM2A) * - THE SOLVENT IS WATER ******************************************************************************* 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 1.42889 * 1 3 3 C 1.42903 * 114.00012 * 2 1 4 4 H 1.08996 * 112.84893 * 341.20432 * 3 2 1 5 5 C 1.53784 * 113.61099 * 112.50976 * 3 2 1 6 6 C 1.53776 * 87.08503 * 89.11844 * 5 3 2 7 7 H 1.09006 * 113.68426 * 270.87116 * 6 5 3 8 8 C 1.52998 * 113.61802 * 139.98257 * 6 5 3 9 9 N 1.46500 * 109.47272 * 87.49787 * 8 6 5 10 10 C 1.34780 * 119.99883 * 180.02562 * 9 8 6 11 11 O 1.21540 * 119.99883 * 0.02562 * 10 9 8 12 12 C 1.47859 * 119.99506 * 180.02562 * 10 9 8 13 13 C 1.39467 * 120.10904 * 180.23588 * 12 10 9 14 14 C 1.38588 * 119.78562 * 180.23212 * 13 12 10 15 15 N 1.40223 * 119.99790 * 179.79382 * 14 13 12 16 16 C 1.36562 * 125.67308 * 89.74327 * 15 14 13 17 17 C 1.50703 * 125.89703 * 359.94357 * 16 15 14 18 18 C 1.34852 * 108.20197 * 180.21045 * 16 15 14 19 19 C 1.40941 * 107.46587 * 359.61829 * 18 16 15 20 20 C 1.50700 * 126.26679 * 180.14870 * 19 18 16 21 21 O 1.42894 * 109.47483 * 255.27757 * 20 19 18 22 22 Si 1.86307 * 109.46879 * 15.27785 * 20 19 18 23 23 C 1.34845 * 107.46731 * 0.38508 * 19 18 16 24 24 C 1.50707 * 125.90062 * 179.80475 * 23 19 18 25 25 C 1.38906 * 120.00886 * 359.51234 * 14 13 12 26 26 C 1.50698 * 119.88966 * 180.26046 * 25 14 13 27 27 C 1.38268 * 120.22955 * 0.27698 * 25 14 13 28 28 C 1.37978 * 120.21673 * 359.95711 * 27 25 14 29 29 C 1.53781 * 87.08141 * 25.43121 * 6 5 3 30 30 H 1.08999 * 109.47779 * 59.99715 * 1 2 3 31 31 H 1.09005 * 109.47249 * 179.97438 * 1 2 3 32 32 H 1.09005 * 109.46858 * 299.99204 * 1 2 3 33 33 H 1.09002 * 113.61493 * 334.56434 * 5 3 2 34 34 H 1.09005 * 113.60940 * 203.67009 * 5 3 2 35 35 H 1.09007 * 109.46787 * 327.50039 * 8 6 5 36 36 H 1.09001 * 109.47280 * 207.50229 * 8 6 5 37 37 H 0.97002 * 120.00146 * 0.02562 * 9 8 6 38 38 H 1.08000 * 120.10565 * 359.97438 * 13 12 10 39 39 H 1.09002 * 109.47152 * 89.99982 * 17 16 15 40 40 H 1.09001 * 109.46980 * 330.00082 * 17 16 15 41 41 H 1.09004 * 109.47113 * 210.00063 * 17 16 15 42 42 H 1.08002 * 126.26621 * 179.73878 * 18 16 15 43 43 H 1.08997 * 109.47407 * 135.27084 * 20 19 18 44 44 H 0.96695 * 114.00123 * 179.97438 * 21 20 19 45 45 H 1.48502 * 109.99761 * 299.99645 * 22 20 19 46 46 H 1.48497 * 110.00281 * 61.31527 * 22 20 19 47 47 H 1.08993 * 109.46782 * 269.95356 * 24 23 19 48 48 H 1.08999 * 109.46612 * 29.95820 * 24 23 19 49 49 H 1.08997 * 109.46933 * 149.95349 * 24 23 19 50 50 H 1.08993 * 109.47590 * 89.99665 * 26 25 14 51 51 H 1.08998 * 109.47228 * 210.00336 * 26 25 14 52 52 H 1.09008 * 109.46601 * 329.99576 * 26 25 14 53 53 H 1.07990 * 119.89485 * 179.97438 * 27 25 14 54 54 H 1.07997 * 120.01275 * 180.02562 * 28 27 25 55 55 H 1.08998 * 113.61551 * 89.11720 * 29 6 5 56 56 H 1.08999 * 113.61445 * 220.02018 * 29 6 5 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 2.0101 1.3055 0.0000 4 1 1.3136 2.0789 -0.3236 5 6 2.7535 1.6488 1.3017 6 6 4.0061 1.0330 0.6564 7 1 4.1097 -0.0372 0.8353 8 6 5.2910 1.8111 0.9474 9 7 5.8764 1.3352 2.2032 10 6 7.0201 1.8803 2.6627 11 8 7.5656 2.7671 2.0356 12 6 7.6112 1.3995 3.9299 13 6 8.7920 1.9653 4.4102 14 6 9.3427 1.5062 5.5962 15 7 10.5321 2.0689 6.0809 16 6 10.6211 3.1454 6.9165 17 6 9.4613 3.9304 7.4729 18 6 11.9264 3.3882 7.1530 19 6 12.6711 2.4229 6.4458 20 6 14.1730 2.3017 6.4163 21 8 14.6653 2.7840 5.1645 22 14 14.9047 3.3100 7.8015 23 6 11.7940 1.6310 5.7964 24 6 12.1455 0.4637 4.9104 25 6 8.7135 0.4927 6.3078 26 6 9.3116 -0.0004 7.6001 27 6 7.5405 -0.0656 5.8344 28 6 6.9865 0.3810 4.6522 29 6 3.3755 1.3720 -0.7046 30 1 -0.3634 0.5138 -0.8899 31 1 -0.3634 -1.0277 -0.0005 32 1 -0.3633 0.5137 0.8901 33 1 2.3927 1.0962 2.1693 34 1 2.8389 2.7197 1.4863 35 1 5.0610 2.8732 1.0332 36 1 6.0007 1.6577 0.1345 37 1 5.4408 0.6277 2.7039 38 1 9.2778 2.7558 3.8575 39 1 9.1465 3.4917 8.4198 40 1 8.6318 3.9031 6.7663 41 1 9.7666 4.9641 7.6351 42 1 12.3275 4.1767 7.7725 43 1 14.4556 1.2562 6.5394 44 1 15.6269 2.7363 5.0754 45 1 14.5267 4.7375 7.6452 46 1 14.4254 2.7981 9.1105 47 1 12.2646 0.8098 3.8837 48 1 13.0778 0.0152 5.2533 49 1 11.3480 -0.2782 4.9535 50 1 8.9130 0.5821 8.4307 51 1 9.0593 -1.0516 7.7395 52 1 10.3953 0.1115 7.5649 53 1 7.0561 -0.8535 6.3918 54 1 6.0700 -0.0571 4.2857 55 1 3.6310 2.3671 -1.0685 56 1 3.5169 0.5959 -1.4567 There are 72 doubly filled levels RHF calculation, no. of doubly occupied orbitals= 72 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) 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=0 AM1 1SCF TLIMIT=15 GEO-OK SM5.42R & SOLVNT=WATER s_22_12896214_12335842.mol2 56 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Sat Mar 6 2021 22:22:09 Heat of formation + Delta-G solvation = -5.704733 kcal Electronic energy + Delta-G solvation = -35613.574203 eV Core-core repulsion = 31070.197396 eV Total energy + Delta-G solvation = -4543.376807 eV No. of doubly occupied orbitals = 72 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 385.209 amu Computer time = 1.85 seconds Orbital eigenvalues (eV) -43.07714 -41.46316 -40.58734 -39.62564 -37.64337 -37.37231 -35.55043 -34.58266 -33.86005 -33.73439 -30.82944 -30.27013 -29.84822 -28.26580 -27.40967 -27.05307 -26.64982 -24.85645 -24.21781 -23.68976 -23.24093 -22.04531 -21.11391 -20.57871 -19.96572 -18.81778 -18.30722 -17.84019 -17.56656 -17.26077 -16.83728 -16.69618 -16.59007 -16.36110 -16.03712 -15.88421 -15.54493 -15.43289 -15.30310 -15.08285 -14.85363 -14.77647 -14.63339 -14.37955 -14.31146 -14.22838 -13.96989 -13.82017 -13.68397 -13.42752 -13.38937 -13.26909 -13.26131 -13.07852 -12.90430 -12.81749 -12.71203 -12.52461 -12.44471 -12.40741 -11.94178 -11.90491 -11.69586 -11.34778 -11.10194 -10.49548 -10.35883 -10.29084 -10.15555 -9.95079 -9.87453 -8.97493 -4.93990 -0.51476 -0.10867 0.92264 1.38758 1.53381 1.55287 1.63257 1.73711 1.98518 2.09842 2.48163 2.70064 3.35365 3.52067 3.53288 3.56355 3.59596 3.69463 3.72764 3.74509 3.80710 3.86541 3.89006 4.06820 4.10508 4.11907 4.22544 4.26430 4.29705 4.33674 4.45729 4.47218 4.49652 4.52154 4.52859 4.53412 4.56424 4.59280 4.62233 4.64322 4.70134 4.75524 4.83808 4.84877 4.86287 4.90496 4.94591 4.96866 4.99004 5.01519 5.04366 5.12839 5.18689 5.20265 5.21253 5.37697 5.48835 5.80671 5.99113 6.25790 6.33192 6.37200 7.00308 7.01564 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.025 3.975 2 O -0.391 6.391 3 C 0.055 3.945 4 H 0.084 0.916 5 C -0.149 4.149 6 C -0.107 4.107 7 H 0.104 0.896 8 C 0.130 3.870 9 N -0.705 5.705 10 C 0.556 3.444 11 O -0.583 6.583 12 C -0.142 4.142 13 C -0.056 4.056 14 C 0.086 3.914 15 N -0.399 5.399 16 C 0.024 3.976 17 C -0.082 4.082 18 C -0.219 4.219 19 C -0.179 4.179 20 C -0.041 4.041 21 O -0.569 6.569 22 Si 0.787 3.213 23 C 0.045 3.955 24 C -0.077 4.077 25 C -0.040 4.040 26 C -0.121 4.121 27 C -0.107 4.107 28 C -0.053 4.053 29 C -0.133 4.133 30 H 0.048 0.952 31 H 0.094 0.906 32 H 0.050 0.950 33 H 0.078 0.922 34 H 0.097 0.903 35 H 0.065 0.935 36 H 0.061 0.939 37 H 0.416 0.584 38 H 0.110 0.890 39 H 0.087 0.913 40 H 0.062 0.938 41 H 0.086 0.914 42 H 0.130 0.870 43 H 0.085 0.915 44 H 0.398 0.602 45 H -0.307 1.307 46 H -0.295 1.295 47 H 0.066 0.934 48 H 0.096 0.904 49 H 0.068 0.932 50 H 0.083 0.917 51 H 0.100 0.900 52 H 0.054 0.946 53 H 0.177 0.823 54 H 0.170 0.830 55 H 0.105 0.895 56 H 0.075 0.925 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -4.618 -6.581 2.513 8.423 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 -0.071 4.071 2 O -0.310 6.310 3 C -0.004 4.004 4 H 0.102 0.898 5 C -0.187 4.187 6 C -0.126 4.126 7 H 0.122 0.878 8 C 0.007 3.993 9 N -0.357 5.357 10 C 0.344 3.656 11 O -0.464 6.464 12 C -0.146 4.146 13 C -0.076 4.076 14 C -0.002 4.002 15 N -0.074 5.074 16 C -0.085 4.085 17 C -0.139 4.139 18 C -0.243 4.243 19 C -0.185 4.185 20 C -0.151 4.151 21 O -0.378 6.378 22 Si 0.694 3.306 23 C -0.064 4.064 24 C -0.134 4.134 25 C -0.042 4.042 26 C -0.177 4.177 27 C -0.125 4.125 28 C -0.071 4.071 29 C -0.171 4.171 30 H 0.067 0.933 31 H 0.112 0.888 32 H 0.068 0.932 33 H 0.097 0.903 34 H 0.115 0.885 35 H 0.084 0.916 36 H 0.079 0.921 37 H 0.255 0.745 38 H 0.128 0.872 39 H 0.105 0.895 40 H 0.081 0.919 41 H 0.104 0.896 42 H 0.147 0.853 43 H 0.103 0.897 44 H 0.248 0.752 45 H -0.236 1.236 46 H -0.223 1.223 47 H 0.085 0.915 48 H 0.115 0.885 49 H 0.087 0.913 50 H 0.102 0.898 51 H 0.119 0.881 52 H 0.073 0.927 53 H 0.195 0.805 54 H 0.188 0.812 55 H 0.123 0.877 56 H 0.093 0.907 Dipole moment (debyes) X Y Z Total from point charges -5.233 -5.656 2.492 8.099 hybrid contribution -0.639 0.387 -0.218 0.778 sum -5.872 -5.270 2.275 8.211 Atomic orbital electron populations 1.22960 0.79616 1.03706 1.00776 1.87834 1.21166 1.27314 1.94731 1.23156 0.94796 0.85199 0.97204 0.89767 1.23554 0.95484 1.01801 0.97813 1.22666 0.91863 1.00406 0.97630 0.87779 1.21450 0.94381 0.98469 0.85049 1.45766 1.24291 1.40354 1.25332 1.18431 0.80866 0.81439 0.84856 1.90793 1.62886 1.32608 1.60163 1.19701 0.97211 1.01053 0.96601 1.21159 0.94580 0.97940 0.93955 1.17430 0.88569 0.98726 0.95518 1.41326 1.03754 1.24654 1.37658 1.20688 0.96672 0.92393 0.98734 1.20363 0.93396 0.99244 1.00892 1.20618 0.92681 1.03134 1.07899 1.18952 0.94167 0.99967 1.05447 1.24127 0.91266 1.04395 0.95333 1.86492 1.28586 1.86978 1.35741 0.94943 0.87272 0.75130 0.73257 1.20605 0.82135 1.00960 1.02743 1.20315 1.02949 0.92843 0.97320 1.20525 0.94674 0.92566 0.96396 1.20911 1.00529 1.03259 0.92996 1.21367 0.94088 1.00921 0.96160 1.21777 0.99352 0.92550 0.93429 1.23231 0.94016 1.03448 0.96371 0.93295 0.88792 0.93168 0.90343 0.88467 0.91626 0.92099 0.74547 0.87204 0.89485 0.91924 0.89557 0.85271 0.89746 0.75185 1.23575 1.22281 0.91523 0.88540 0.91332 0.89817 0.88084 0.92672 0.80541 0.81228 0.87656 0.90650 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 0.03 -0.09 10.85 113.37 1.23 1.14 16 2 O -0.39 -0.43 10.63 -148.98 -1.58 -2.01 16 3 C 0.05 -0.13 4.38 31.12 0.14 0.01 16 4 H 0.08 -0.36 7.87 -2.39 -0.02 -0.37 16 5 C -0.15 0.65 7.46 31.12 0.23 0.88 16 6 C -0.11 0.40 3.69 -10.27 -0.04 0.36 16 7 H 0.10 -0.41 8.14 -2.38 -0.02 -0.43 16 8 C 0.13 -0.04 5.51 86.38 0.48 0.44 16 9 N -0.71 0.55 5.51 -465.96 -2.57 -2.02 16 10 C 0.56 3.81 7.77 86.79 0.67 4.48 16 11 O -0.58 -9.80 16.34 -3.84 -0.06 -9.86 16 12 C -0.14 -0.48 5.87 -20.10 -0.12 -0.60 16 13 C -0.06 -0.46 9.51 22.65 0.22 -0.24 16 14 C 0.09 0.49 4.49 38.04 0.17 0.67 16 15 N -0.40 -3.63 1.85 -320.36 -0.59 -4.23 16 16 C 0.02 0.24 6.86 41.05 0.28 0.53 16 17 C -0.08 -0.37 10.09 71.24 0.72 0.35 16 18 C -0.22 -2.73 9.27 22.15 0.21 -2.53 16 19 C -0.18 -2.01 5.39 -19.98 -0.11 -2.12 16 20 C -0.04 -0.21 2.59 71.24 0.18 -0.02 16 21 O -0.57 -3.10 12.86 -148.98 -1.92 -5.01 16 22 Si 0.79 2.46 30.85 68.60 2.12 4.58 16 23 C 0.05 0.45 6.32 41.04 0.26 0.71 16 24 C -0.08 -0.38 9.88 71.24 0.70 0.33 16 25 C -0.04 0.01 5.90 -19.70 -0.12 -0.11 16 26 C -0.12 0.27 9.76 71.24 0.70 0.97 16 27 C -0.11 0.61 9.67 22.22 0.21 0.82 16 28 C -0.05 0.26 9.54 22.54 0.21 0.47 16 29 C -0.13 0.40 7.47 31.12 0.23 0.63 16 30 H 0.05 -0.22 8.14 -2.39 -0.02 -0.24 16 31 H 0.09 -0.46 8.14 -2.38 -0.02 -0.48 16 32 H 0.05 -0.25 8.14 -2.38 -0.02 -0.27 16 33 H 0.08 -0.35 8.14 -2.39 -0.02 -0.37 16 34 H 0.10 -0.50 7.90 -2.38 -0.02 -0.52 16 35 H 0.07 0.10 7.84 -2.38 -0.02 0.08 16 36 H 0.06 0.16 8.14 -2.39 -0.02 0.14 16 37 H 0.42 -3.15 6.50 -92.71 -0.60 -3.75 16 38 H 0.11 1.56 7.65 -2.91 -0.02 1.54 16 39 H 0.09 0.10 8.14 -2.39 -0.02 0.09 16 40 H 0.06 0.31 7.83 -2.39 -0.02 0.29 16 41 H 0.09 0.28 8.14 -2.38 -0.02 0.26 16 42 H 0.13 1.59 6.56 -2.91 -0.02 1.57 16 43 H 0.08 0.02 7.50 -2.39 -0.02 0.00 16 44 H 0.40 -2.31 8.74 -74.06 -0.65 -2.96 16 45 H -0.31 -3.55 7.05 99.48 0.70 -2.85 16 46 H -0.30 -2.57 7.11 99.48 0.71 -1.87 16 47 H 0.07 0.44 8.14 -2.39 -0.02 0.43 16 48 H 0.10 0.14 7.50 -2.39 -0.02 0.12 16 49 H 0.07 0.20 7.83 -2.39 -0.02 0.19 16 50 H 0.08 -0.24 8.14 -2.39 -0.02 -0.25 16 51 H 0.10 -0.71 8.08 -2.39 -0.02 -0.73 16 52 H 0.05 0.12 6.98 -2.38 -0.02 0.11 16 53 H 0.18 -2.20 8.06 -2.92 -0.02 -2.23 16 54 H 0.17 -2.12 6.40 -2.91 -0.02 -2.14 16 55 H 0.11 -0.50 8.10 -2.39 -0.02 -0.51 16 56 H 0.07 -0.11 8.14 -2.39 -0.02 -0.13 16 Total: 0.00 -28.19 455.37 1.54 -26.66 By element: Atomic # 1 Polarization: -14.96 SS G_CDS: -0.32 Total: -15.29 kcal Atomic # 6 Polarization: 0.72 SS G_CDS: 6.47 Total: 7.18 kcal Atomic # 7 Polarization: -3.09 SS G_CDS: -3.16 Total: -6.25 kcal Atomic # 8 Polarization: -13.32 SS G_CDS: -3.56 Total: -16.89 kcal Atomic # 14 Polarization: 2.46 SS G_CDS: 2.12 Total: 4.58 kcal Total: -28.19 1.54 -26.66 kcal The number of atoms in the molecule is 56 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_12896214_12335842.mol2 56 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 20.952 kcal (2) G-P(sol) polarization free energy of solvation -28.193 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -7.241 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy 1.536 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -26.657 kcal (6) G-S(sol) free energy of system = (1) + (5) -5.705 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.85 seconds