Wall clock time and date at job start Sun Mar 7 2021 06:30:04 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= 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 C 1.50701 * 1 3 3 C 1.36410 * 125.80208 * 2 1 4 4 C 1.47374 * 127.19288 * 0.02562 * 3 2 1 5 5 O 1.21618 * 120.00337 * 359.97438 * 4 3 2 6 6 N 1.34777 * 120.00036 * 179.97438 * 4 3 2 7 7 C 1.46508 * 120.00015 * 179.97438 * 6 4 3 8 8 C 1.53000 * 109.46810 * 179.97438 * 7 6 4 9 9 H 1.08998 * 112.85038 * 43.80987 * 8 7 6 10 10 C 1.53787 * 113.60890 * 175.00176 * 8 7 6 11 11 C 1.53784 * 87.07923 * 139.98364 * 10 8 7 12 12 F 1.39895 * 113.61242 * 220.01912 * 11 10 8 13 13 C 1.52998 * 113.61395 * 89.11282 * 11 10 8 14 14 N 1.46504 * 109.47013 * 179.97438 * 13 11 10 15 15 C 1.34776 * 120.00069 * 179.97438 * 14 13 11 16 16 O 1.21511 * 120.00019 * 0.02562 * 15 14 13 17 17 O 1.34633 * 119.99975 * 180.02562 * 15 14 13 18 18 C 1.45206 * 116.99745 * 180.02562 * 17 15 14 19 19 C 1.52995 * 109.47275 * 59.99995 * 18 17 15 20 20 C 1.53002 * 109.46978 * 180.02562 * 18 17 15 21 21 C 1.52999 * 109.47075 * 299.99659 * 18 17 15 22 22 C 1.53779 * 87.08045 * 334.56667 * 11 10 8 23 23 C 1.47021 * 105.61289 * 180.26023 * 3 2 1 24 24 C 1.34178 * 105.95618 * 359.57402 * 23 3 2 25 25 C 1.50696 * 125.43596 * 180.14251 * 24 23 3 26 26 O 1.42896 * 109.47408 * 65.31666 * 25 24 23 27 27 Si 1.86300 * 109.46910 * 185.31222 * 25 24 23 28 28 O 1.33653 * 125.79929 * 180.02562 * 2 1 3 29 29 H 1.08998 * 109.47134 * 89.99825 * 1 2 3 30 30 H 1.09003 * 109.47496 * 209.99999 * 1 2 3 31 31 H 1.09002 * 109.47322 * 329.99654 * 1 2 3 32 32 H 0.96999 * 120.00101 * 0.02562 * 6 4 3 33 33 H 1.09003 * 109.46643 * 60.00190 * 7 6 4 34 34 H 1.08993 * 109.47454 * 300.00286 * 7 6 4 35 35 H 1.09004 * 113.61202 * 254.53117 * 10 8 7 36 36 H 1.08994 * 113.61447 * 25.43549 * 10 8 7 37 37 H 1.09004 * 109.47533 * 300.00135 * 13 11 10 38 38 H 1.09004 * 109.47128 * 60.00451 * 13 11 10 39 39 H 0.96999 * 119.99633 * 0.02562 * 14 13 11 40 40 H 1.09013 * 109.46838 * 60.00068 * 19 18 17 41 41 H 1.09002 * 109.47117 * 179.97438 * 19 18 17 42 42 H 1.09000 * 109.47634 * 300.00176 * 19 18 17 43 43 H 1.09008 * 109.47000 * 60.00051 * 20 18 17 44 44 H 1.09002 * 109.47330 * 180.02562 * 20 18 17 45 45 H 1.09002 * 109.46956 * 300.00396 * 20 18 17 46 46 H 1.09000 * 109.46472 * 60.00659 * 21 18 17 47 47 H 1.08997 * 109.47124 * 179.97438 * 21 18 17 48 48 H 1.08993 * 109.47905 * 300.00696 * 21 18 17 49 49 H 1.09006 * 113.61307 * 270.88660 * 22 11 10 50 50 H 1.09007 * 113.61642 * 139.98417 * 22 11 10 51 51 H 1.08002 * 127.02200 * 179.73266 * 23 3 2 52 52 H 1.08993 * 109.47674 * 305.30879 * 25 24 23 53 53 H 0.96701 * 114.00448 * 59.99344 * 26 25 24 54 54 H 1.48503 * 110.00188 * 58.67781 * 27 25 24 55 55 H 1.48497 * 110.00380 * 180.02562 * 27 25 24 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 1.5070 0.0000 0.0000 3 6 2.3050 1.1063 0.0000 4 6 1.8740 2.5156 0.0005 5 8 0.6890 2.7892 0.0006 6 7 2.7931 3.5014 0.0010 7 6 2.3646 4.9025 0.0009 8 6 3.5949 5.8120 0.0021 9 1 4.3667 5.4808 -0.6927 10 6 3.2558 7.3069 -0.1206 11 6 4.3668 7.5631 0.9115 12 9 4.0416 8.5457 1.8526 13 6 5.7478 7.7706 0.2866 14 7 6.7324 8.0066 1.3454 15 6 8.0256 8.2161 1.0287 16 8 8.3747 8.2097 -0.1352 17 8 8.9305 8.4325 2.0018 18 6 10.3048 8.6512 1.5871 19 6 10.3743 9.8814 0.6802 20 6 11.1801 8.8768 2.8215 21 6 10.8082 7.4250 0.8229 22 6 4.1257 6.1285 1.4103 23 6 3.6849 0.5990 -0.0064 24 6 3.5859 -0.7392 0.0000 25 6 4.7459 -1.7011 -0.0001 26 8 5.4763 -1.5666 1.2207 27 14 4.1068 -3.4444 -0.1524 28 8 2.2888 -1.0840 -0.0005 29 1 -0.3633 0.0000 -1.0276 30 1 -0.3634 -0.8900 0.5138 31 1 -0.3634 0.8900 0.5139 32 1 3.7382 3.2833 0.0006 33 1 1.7666 5.0995 0.8908 34 1 1.7673 5.0997 -0.8892 35 1 3.4696 7.7238 -1.1048 36 1 2.2586 7.5594 0.2396 37 1 6.0280 6.8820 -0.2791 38 1 5.7189 8.6320 -0.3807 39 1 6.4537 8.0113 2.2745 40 1 10.0156 10.7550 1.2248 41 1 11.4060 10.0458 0.3693 42 1 9.7507 9.7203 -0.1992 43 1 11.1306 8.0000 3.4673 44 1 12.2117 9.0414 2.5103 45 1 10.8216 9.7501 3.3665 46 1 10.1846 7.2639 -0.0565 47 1 11.8396 7.5893 0.5113 48 1 10.7586 6.5485 1.4689 49 1 3.3661 6.0589 2.1890 50 1 5.0417 5.5940 1.6621 51 1 4.5928 1.1838 -0.0122 52 1 5.4015 -1.4797 -0.8421 53 1 4.9541 -1.7494 2.0138 54 1 3.3183 -3.5890 -1.4025 55 1 5.2410 -4.4030 -0.1530 There are 75 doubly filled levels RHF calculation, no. of doubly occupied orbitals= 75 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). 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_16500038_13308374.mol2 55 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Sun Mar 7 2021 06:30:04 Heat of formation + Delta-G solvation = -159.117738 kcal Electronic energy + Delta-G solvation = -37905.169518 eV Core-core repulsion = 32633.000286 eV Total energy + Delta-G solvation = -5272.169232 eV No. of doubly occupied orbitals = 75 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 399.198 amu Computer time = 1.78 seconds Orbital eigenvalues (eV) -48.75039 -43.76725 -41.86994 -40.82119 -39.83440 -38.39118 -37.99424 -36.11431 -35.45910 -34.76439 -34.12095 -33.10449 -30.31853 -29.27911 -28.38720 -28.32449 -27.62188 -27.02377 -25.66823 -24.22539 -23.39605 -22.93934 -22.04012 -21.34445 -20.86505 -20.07983 -19.20919 -18.90988 -18.05315 -17.89396 -17.66742 -17.52068 -17.29150 -16.85539 -16.75390 -16.66007 -16.51201 -16.15518 -15.83778 -15.77552 -15.65802 -15.46907 -15.20215 -15.10082 -14.66149 -14.47529 -14.36318 -14.25950 -14.17974 -13.99612 -13.87253 -13.73305 -13.48815 -13.39257 -13.21291 -13.11945 -12.93982 -12.89408 -12.86950 -12.76786 -12.52052 -12.40310 -12.30151 -12.24969 -12.08291 -11.61017 -11.43090 -11.35576 -11.17854 -11.12272 -10.93878 -10.60374 -10.37609 -10.15790 -9.58287 -5.00864 0.23039 0.82991 1.04166 1.16859 1.40871 1.67263 1.75023 1.90659 2.13429 2.24898 2.92237 3.06593 3.17179 3.22568 3.25448 3.41453 3.47965 3.57420 3.71607 3.75640 3.77195 3.77905 3.92089 4.05123 4.11461 4.24437 4.31111 4.33156 4.42377 4.47682 4.55025 4.57576 4.59615 4.59814 4.64971 4.67427 4.71256 4.74669 4.74713 4.75433 4.80438 4.83660 4.85593 4.91254 4.95716 5.04078 5.13083 5.17236 5.21706 5.25083 5.27887 5.30732 5.42243 5.51241 5.89663 6.24049 6.46680 6.62095 7.14926 7.22739 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.085 4.085 2 C 0.085 3.915 3 C -0.269 4.269 4 C 0.587 3.413 5 O -0.575 6.575 6 N -0.711 5.711 7 C 0.134 3.866 8 C -0.109 4.109 9 H 0.123 0.877 10 C -0.134 4.134 11 C 0.078 3.922 12 F -0.209 7.209 13 C 0.138 3.862 14 N -0.702 5.702 15 C 0.647 3.353 16 O -0.589 6.589 17 O -0.370 6.370 18 C 0.127 3.873 19 C -0.181 4.181 20 C -0.139 4.139 21 C -0.179 4.179 22 C -0.144 4.144 23 C -0.148 4.148 24 C -0.061 4.061 25 C -0.022 4.022 26 O -0.540 6.540 27 Si 0.774 3.226 28 O -0.171 6.171 29 H 0.095 0.905 30 H 0.101 0.899 31 H 0.098 0.902 32 H 0.413 0.587 33 H 0.066 0.934 34 H 0.068 0.932 35 H 0.101 0.899 36 H 0.106 0.894 37 H 0.105 0.895 38 H 0.080 0.920 39 H 0.415 0.585 40 H 0.060 0.940 41 H 0.088 0.912 42 H 0.064 0.936 43 H 0.070 0.930 44 H 0.099 0.901 45 H 0.068 0.932 46 H 0.065 0.935 47 H 0.087 0.913 48 H 0.063 0.937 49 H 0.099 0.901 50 H 0.094 0.906 51 H 0.177 0.823 52 H 0.140 0.860 53 H 0.400 0.600 54 H -0.296 1.296 55 H -0.280 1.280 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 1.618 -2.222 2.578 3.768 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 -0.141 4.141 2 C 0.031 3.969 3 C -0.274 4.274 4 C 0.376 3.624 5 O -0.457 6.457 6 N -0.362 5.362 7 C 0.011 3.989 8 C -0.128 4.128 9 H 0.141 0.859 10 C -0.172 4.172 11 C 0.059 3.941 12 F -0.189 7.189 13 C 0.016 3.984 14 N -0.363 5.363 15 C 0.401 3.599 16 O -0.480 6.480 17 O -0.284 6.284 18 C 0.091 3.909 19 C -0.238 4.238 20 C -0.196 4.196 21 C -0.237 4.237 22 C -0.182 4.182 23 C -0.167 4.167 24 C -0.109 4.109 25 C -0.133 4.133 26 O -0.348 6.348 27 Si 0.679 3.321 28 O -0.068 6.068 29 H 0.113 0.887 30 H 0.120 0.880 31 H 0.116 0.884 32 H 0.250 0.750 33 H 0.084 0.916 34 H 0.087 0.913 35 H 0.120 0.880 36 H 0.124 0.876 37 H 0.123 0.877 38 H 0.098 0.902 39 H 0.252 0.748 40 H 0.079 0.921 41 H 0.106 0.894 42 H 0.083 0.917 43 H 0.089 0.911 44 H 0.118 0.882 45 H 0.087 0.913 46 H 0.084 0.916 47 H 0.105 0.895 48 H 0.082 0.918 49 H 0.118 0.882 50 H 0.112 0.888 51 H 0.194 0.806 52 H 0.157 0.843 53 H 0.250 0.750 54 H -0.223 1.223 55 H -0.206 1.206 Dipole moment (debyes) X Y Z Total from point charges 1.443 -2.835 1.188 3.395 hybrid contribution 0.419 0.893 0.012 0.987 sum 1.862 -1.941 1.200 2.945 Atomic orbital electron populations 1.20711 0.82591 1.05742 1.05067 1.23241 0.94795 0.83032 0.95821 1.21224 0.94181 0.93583 1.18383 1.17347 0.85203 0.84438 0.75393 1.90766 1.17982 1.84577 1.52366 1.45669 1.10100 1.05774 1.74669 1.21328 0.96339 0.78813 1.02415 1.22610 0.97813 0.94329 0.98011 0.85921 1.23586 0.98687 0.94898 1.00070 1.22661 0.94765 0.86923 0.89745 1.92859 1.93565 1.65334 1.67172 1.21679 0.83594 1.04184 0.88976 1.44497 1.04198 1.75464 1.12110 1.18203 0.82370 0.76154 0.83193 1.90917 1.79940 1.57459 1.19678 1.86320 1.20280 1.83954 1.37866 1.22381 0.75753 0.96079 0.96705 1.22484 1.04342 0.96601 1.00375 1.21902 0.98989 1.03343 0.95328 1.22471 1.03106 0.96853 1.01228 1.23774 1.03562 0.92929 0.97913 1.22800 0.96421 0.93658 1.03805 1.22898 0.82882 0.96058 1.09046 1.24436 0.90255 1.07084 0.91531 1.86533 1.39568 1.93136 1.15563 0.93269 0.79685 0.72981 0.86151 1.83670 1.16741 1.34988 1.71439 0.88652 0.87996 0.88381 0.75037 0.91596 0.91345 0.88028 0.87564 0.87698 0.90202 0.74809 0.92119 0.89361 0.91666 0.91103 0.88229 0.91339 0.91560 0.89461 0.91802 0.88242 0.88769 0.80557 0.84339 0.74953 1.22315 1.20620 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 14. 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 -0.09 0.03 9.89 71.24 0.70 0.74 16 2 C 0.08 0.23 7.37 25.26 0.19 0.42 16 3 C -0.27 -0.80 6.31 -19.00 -0.12 -0.92 16 4 C 0.59 2.72 7.81 86.65 0.68 3.40 16 5 O -0.58 -6.40 14.84 -4.09 -0.06 -6.47 16 6 N -0.71 1.64 5.55 -466.40 -2.59 -0.95 16 7 C 0.13 -0.51 5.51 86.38 0.48 -0.03 16 8 C -0.11 0.94 3.40 -10.27 -0.03 0.91 16 9 H 0.12 -1.39 7.66 -2.39 -0.02 -1.41 16 10 C -0.13 0.99 7.13 31.12 0.22 1.21 16 11 C 0.08 -0.38 1.83 -10.27 -0.02 -0.40 16 12 F -0.21 -0.24 16.82 44.97 0.76 0.52 16 13 C 0.14 -0.45 5.24 86.38 0.45 0.01 16 14 N -0.70 -0.11 5.47 -590.84 -3.23 -3.34 16 15 C 0.65 3.75 8.06 129.79 1.05 4.79 16 16 O -0.59 -6.02 11.88 19.80 0.24 -5.78 16 17 O -0.37 -1.92 9.94 -55.43 -0.55 -2.47 16 18 C 0.13 0.31 1.13 -10.79 -0.01 0.29 16 19 C -0.18 -0.52 8.37 71.98 0.60 0.08 16 20 C -0.14 0.32 8.85 71.98 0.64 0.96 16 21 C -0.18 -0.36 8.37 71.98 0.60 0.24 16 22 C -0.14 1.07 7.09 31.12 0.22 1.29 16 23 C -0.15 0.14 10.48 23.65 0.25 0.39 16 24 C -0.06 0.04 6.18 24.76 0.15 0.20 16 25 C -0.02 0.08 2.97 71.23 0.21 0.29 16 26 O -0.54 2.14 12.88 -148.98 -1.92 0.22 16 27 Si 0.77 -2.27 32.09 68.60 2.20 -0.07 16 28 O -0.17 -0.23 8.90 4.50 0.04 -0.19 16 29 H 0.10 -0.13 8.14 -2.39 -0.02 -0.15 16 30 H 0.10 -0.48 8.14 -2.39 -0.02 -0.50 16 31 H 0.10 0.26 6.48 -2.39 -0.02 0.25 16 32 H 0.41 -2.98 7.64 -92.71 -0.71 -3.69 16 33 H 0.07 -0.10 7.84 -2.39 -0.02 -0.12 16 34 H 0.07 -0.12 8.14 -2.39 -0.02 -0.14 16 35 H 0.10 -0.92 8.10 -2.39 -0.02 -0.94 16 36 H 0.11 -0.70 8.10 -2.39 -0.02 -0.72 16 37 H 0.10 -0.57 7.34 -2.39 -0.02 -0.59 16 38 H 0.08 -0.11 8.14 -2.38 -0.02 -0.13 16 39 H 0.42 -0.83 8.30 -92.71 -0.77 -1.60 16 40 H 0.06 0.16 8.14 -2.38 -0.02 0.14 16 41 H 0.09 -0.06 8.14 -2.39 -0.02 -0.08 16 42 H 0.06 0.51 5.88 -2.39 -0.01 0.50 16 43 H 0.07 -0.18 8.14 -2.38 -0.02 -0.20 16 44 H 0.10 -0.56 8.14 -2.39 -0.02 -0.58 16 45 H 0.07 -0.14 8.14 -2.39 -0.02 -0.16 16 46 H 0.07 0.45 5.88 -2.39 -0.01 0.44 16 47 H 0.09 -0.11 8.14 -2.39 -0.02 -0.13 16 48 H 0.06 0.08 8.14 -2.39 -0.02 0.06 16 49 H 0.10 -0.60 7.90 -2.38 -0.02 -0.62 16 50 H 0.09 -0.82 8.10 -2.38 -0.02 -0.84 16 51 H 0.18 -1.02 7.74 -2.91 -0.02 -1.05 16 52 H 0.14 -0.66 7.96 -2.39 -0.02 -0.67 16 53 H 0.40 -4.51 8.70 -74.06 -0.64 -5.16 16 54 H -0.30 -1.26 7.11 99.48 0.71 -0.55 16 55 H -0.28 -0.72 7.11 99.48 0.71 -0.01 16 Total: 0.00 -23.34 451.79 0.00 -23.35 By element: Atomic # 1 Polarization: -17.53 SS G_CDS: -1.14 Total: -18.67 kcal Atomic # 6 Polarization: 7.61 SS G_CDS: 6.25 Total: 13.86 kcal Atomic # 7 Polarization: 1.53 SS G_CDS: -5.82 Total: -4.30 kcal Atomic # 8 Polarization: -12.43 SS G_CDS: -2.25 Total: -14.69 kcal Atomic # 9 Polarization: -0.24 SS G_CDS: 0.76 Total: 0.52 kcal Atomic # 14 Polarization: -2.27 SS G_CDS: 2.20 Total: -0.07 kcal Total: -23.34 0.00 -23.35 kcal The number of atoms in the molecule is 55 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_16500038_13308374.mol2 55 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 -135.773 kcal (2) G-P(sol) polarization free energy of solvation -23.342 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -159.114 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -0.003 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -23.345 kcal (6) G-S(sol) free energy of system = (1) + (5) -159.118 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.78 seconds