Wall clock time and date at job start Sun Mar 7 2021 05:36:58 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 * 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 1.42897 * 1 3 3 C 1.35899 * 117.00185 * 2 1 4 4 C 1.38614 * 120.03051 * 180.27165 * 3 2 1 5 5 C 1.38648 * 119.88993 * 180.25285 * 4 3 2 6 6 O 1.35904 * 120.02749 * 179.75066 * 5 4 3 7 7 C 1.42903 * 116.99628 * 359.72745 * 6 5 4 8 8 C 1.50701 * 109.46878 * 179.97438 * 7 6 5 9 9 O 1.21280 * 119.99781 * 0.02562 * 8 7 6 10 10 N 1.34780 * 119.99795 * 179.97438 * 8 7 6 11 11 C 1.46497 * 119.99566 * 180.02562 * 10 8 7 12 12 H 1.08996 * 109.47535 * 325.00618 * 11 10 8 13 13 C 1.53003 * 109.47218 * 85.00262 * 11 10 8 14 14 C 1.52992 * 109.47371 * 179.97438 * 13 11 10 15 15 C 1.52997 * 109.47602 * 300.00379 * 14 13 11 16 16 H 1.09006 * 109.47022 * 300.00206 * 15 14 13 17 17 C 1.50701 * 109.47444 * 179.97438 * 15 14 13 18 18 N 1.30522 * 126.34370 * 144.68825 * 17 15 14 19 19 N 1.28592 * 109.67011 * 179.82555 * 18 17 15 20 20 C 1.30522 * 109.67665 * 0.44765 * 19 18 17 21 21 N 1.35490 * 126.34961 * 325.00068 * 17 15 14 22 22 C 1.53003 * 109.47067 * 59.99435 * 15 14 13 23 23 C 1.52997 * 109.47181 * 300.00423 * 22 15 14 24 24 C 1.38750 * 119.94746 * 359.48026 * 5 4 3 25 25 C 1.50698 * 119.97427 * 180.23034 * 24 5 4 26 26 O 1.42907 * 109.47188 * 74.99931 * 25 24 5 27 27 Si 1.86301 * 109.47254 * 194.99446 * 25 24 5 28 28 C 1.38196 * 120.05357 * 0.24706 * 24 5 4 29 29 C 1.38150 * 120.10864 * 0.02735 * 28 24 5 30 30 H 1.09000 * 109.47073 * 59.99754 * 1 2 3 31 31 H 1.09001 * 109.47382 * 179.97438 * 1 2 3 32 32 H 1.09002 * 109.47423 * 300.00062 * 1 2 3 33 33 H 1.08005 * 120.05376 * 359.97438 * 4 3 2 34 34 H 1.09002 * 109.47382 * 59.99787 * 7 6 5 35 35 H 1.09001 * 109.46938 * 299.99774 * 7 6 5 36 36 H 0.96995 * 120.00011 * 0.02562 * 10 8 7 37 37 H 1.08998 * 109.47302 * 299.99899 * 13 11 10 38 38 H 1.09006 * 109.46570 * 59.99667 * 13 11 10 39 39 H 1.08997 * 109.47506 * 180.02562 * 14 13 11 40 40 H 1.09006 * 109.47100 * 60.00538 * 14 13 11 41 41 H 1.07991 * 126.35245 * 179.73038 * 20 19 18 42 42 H 0.96999 * 126.97522 * 0.02562 * 21 17 15 43 43 H 1.09006 * 109.47034 * 180.02562 * 22 15 14 44 44 H 1.09005 * 109.47087 * 60.00589 * 22 15 14 45 45 H 1.08996 * 109.47340 * 299.99501 * 23 22 15 46 46 H 1.09007 * 109.46591 * 179.97438 * 23 22 15 47 47 H 1.09001 * 109.47045 * 314.99785 * 25 24 5 48 48 H 0.96695 * 114.00140 * 60.00141 * 26 25 24 49 49 H 1.48499 * 109.99965 * 179.97438 * 27 25 24 50 50 H 1.48502 * 110.00117 * 301.32303 * 27 25 24 51 51 H 1.07999 * 119.94983 * 180.02562 * 28 24 5 52 52 H 1.08009 * 119.97354 * 179.97438 * 29 28 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 8 1.4290 0.0000 0.0000 3 6 2.0460 1.2109 0.0000 4 6 3.4302 1.2841 -0.0057 5 6 4.0567 2.5210 -0.0004 6 8 5.4136 2.5960 -0.0008 7 6 6.1316 1.3604 -0.0008 8 6 7.6125 1.6401 -0.0020 9 8 8.0134 2.7847 -0.0022 10 7 8.4912 0.6181 -0.0017 11 6 9.9307 0.8900 -0.0022 12 1 10.1314 1.7843 -0.5921 13 6 10.4090 1.1089 1.4346 14 6 11.9124 1.3922 1.4341 15 6 12.6557 0.2016 0.8250 16 1 12.4546 -0.6927 1.4150 17 6 14.1366 0.4810 0.8240 18 7 15.0885 -0.3919 1.0123 19 7 16.2318 0.1924 0.9416 20 6 16.0610 1.4663 0.7143 21 7 14.7264 1.6857 0.6332 22 6 12.1774 -0.0173 -0.6118 23 6 10.6739 -0.3007 -0.6113 24 6 3.2971 3.6821 -0.0003 25 6 3.9774 5.0268 0.0003 26 8 4.5040 5.2948 -1.3009 27 14 2.7437 6.3467 0.4547 28 6 1.9172 3.6065 -0.0003 29 6 1.2906 2.3753 0.0001 30 1 -0.3633 0.5139 -0.8900 31 1 -0.3634 -1.0277 -0.0005 32 1 -0.3634 0.5138 0.8900 33 1 4.0197 0.3791 -0.0097 34 1 5.8696 0.7879 -0.8906 35 1 5.8702 0.7883 0.8894 36 1 8.1705 -0.2973 -0.0011 37 1 9.8793 1.9568 1.8686 38 1 10.2082 0.2145 2.0245 39 1 12.2532 1.5476 2.4577 40 1 12.1135 2.2864 0.8441 41 1 16.8390 2.2080 0.6103 42 1 14.2831 2.5333 0.4718 43 1 12.7066 -0.8658 -1.0456 44 1 12.3784 0.8769 -1.2019 45 1 10.4729 -1.1949 -0.0213 46 1 10.3332 -0.4561 -1.6350 47 1 4.7896 5.0227 0.7272 48 1 3.8357 5.3134 -1.9995 49 1 3.4025 7.6776 0.4594 50 1 1.6153 6.3413 -0.5106 51 1 1.3277 4.5114 -0.0007 52 1 0.2120 2.3187 0.0005 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=GENORG IOFR=1.4345 ALPHA=0.00 BETA=0.00 GAMMA=38.93 & DIELEC=2.06 FACARB=0.00 FEHALO=0.00 DEV s_22_16624780_4974312.mol2 52 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 05:36:58 Heat of formation + Delta-G solvation = -34.175298 kcal Electronic energy + Delta-G solvation = -35643.677107 eV Core-core repulsion = 30805.069329 eV Total energy + Delta-G solvation = -4838.607778 eV No. of doubly occupied orbitals = 72 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 389.183 amu Computer time = 1.43 seconds Orbital eigenvalues (eV) -44.11404 -41.85826 -41.15256 -40.11091 -39.27274 -38.23042 -36.94050 -35.77804 -34.57459 -32.68155 -32.29520 -32.08716 -31.43189 -30.19758 -28.79430 -28.46669 -26.09865 -24.88238 -24.24163 -23.70494 -23.23411 -22.49503 -22.18433 -21.61485 -21.04768 -19.99554 -19.36769 -18.65168 -18.08415 -17.87769 -17.54840 -17.40786 -17.02237 -16.81536 -16.78714 -16.47201 -16.39058 -16.21063 -15.93401 -15.66756 -15.52242 -15.21555 -15.15308 -14.97018 -14.67955 -14.49681 -14.20324 -13.91151 -13.68814 -13.54097 -13.45630 -13.42725 -13.16550 -12.84539 -12.63023 -12.51034 -12.43868 -12.34367 -12.29578 -12.00293 -11.85825 -11.80142 -11.71754 -11.61308 -11.56393 -11.29917 -10.88385 -10.40673 -10.23644 -10.16671 -9.72341 -9.10644 -4.91520 0.18644 0.30698 0.82411 1.36486 1.37355 1.46516 1.60277 1.78276 1.93482 2.01969 2.12384 2.49148 2.56096 3.07592 3.32372 3.44751 3.50034 3.55425 3.65490 3.67478 3.75779 3.80399 3.83637 3.86912 3.94205 3.98452 4.00636 4.01283 4.12045 4.12804 4.16360 4.19808 4.23040 4.34075 4.35354 4.38004 4.45533 4.49323 4.50169 4.60780 4.73731 4.79808 4.82876 4.87956 4.88953 5.01341 5.05389 5.10525 5.13595 5.20441 5.25618 5.30912 5.43023 6.04622 6.07946 6.26152 6.34492 6.59736 7.06330 7.76948 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 -0.315 6.315 3 C 0.175 3.825 4 C -0.247 4.247 5 C 0.192 3.808 6 O -0.272 6.272 7 C 0.036 3.964 8 C 0.517 3.483 9 O -0.508 6.508 10 N -0.725 5.725 11 C 0.146 3.854 12 H 0.091 0.909 13 C -0.128 4.128 14 C -0.115 4.115 15 C -0.003 4.003 16 H 0.111 0.889 17 C 0.186 3.814 18 N -0.291 5.291 19 N -0.296 5.296 20 C 0.154 3.846 21 N -0.581 5.581 22 C -0.107 4.107 23 C -0.125 4.125 24 C -0.182 4.182 25 C -0.059 4.059 26 O -0.521 6.521 27 Si 0.686 3.314 28 C -0.043 4.043 29 C -0.239 4.239 30 H 0.058 0.942 31 H 0.103 0.897 32 H 0.060 0.940 33 H 0.138 0.862 34 H 0.095 0.905 35 H 0.097 0.903 36 H 0.403 0.597 37 H 0.076 0.924 38 H 0.072 0.928 39 H 0.075 0.925 40 H 0.065 0.935 41 H 0.223 0.777 42 H 0.429 0.571 43 H 0.081 0.919 44 H 0.067 0.933 45 H 0.077 0.923 46 H 0.077 0.923 47 H 0.117 0.883 48 H 0.369 0.631 49 H -0.257 1.257 50 H -0.261 1.261 51 H 0.138 0.862 52 H 0.135 0.865 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -6.489 -1.301 0.685 6.653 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 -0.070 4.070 2 O -0.228 6.228 3 C 0.129 3.871 4 C -0.267 4.267 5 C 0.146 3.854 6 O -0.183 6.183 7 C -0.043 4.043 8 C 0.302 3.698 9 O -0.381 6.381 10 N -0.379 5.379 11 C 0.042 3.958 12 H 0.109 0.891 13 C -0.167 4.167 14 C -0.154 4.154 15 C -0.024 4.024 16 H 0.129 0.871 17 C -0.084 4.084 18 N -0.131 5.131 19 N -0.135 5.135 20 C -0.135 4.135 21 N -0.194 5.194 22 C -0.146 4.146 23 C -0.163 4.163 24 C -0.183 4.183 25 C -0.169 4.169 26 O -0.327 6.327 27 Si 0.587 3.413 28 C -0.060 4.060 29 C -0.258 4.258 30 H 0.077 0.923 31 H 0.121 0.879 32 H 0.079 0.921 33 H 0.156 0.844 34 H 0.113 0.887 35 H 0.114 0.886 36 H 0.237 0.763 37 H 0.094 0.906 38 H 0.091 0.909 39 H 0.094 0.906 40 H 0.084 0.916 41 H 0.239 0.761 42 H 0.269 0.731 43 H 0.099 0.901 44 H 0.086 0.914 45 H 0.095 0.905 46 H 0.096 0.904 47 H 0.135 0.865 48 H 0.216 0.784 49 H -0.182 1.182 50 H -0.186 1.186 51 H 0.156 0.844 52 H 0.152 0.848 Dipole moment (debyes) X Y Z Total from point charges -5.028 -1.180 1.054 5.271 hybrid contribution -1.109 0.834 -1.518 2.057 sum -6.137 -0.346 -0.464 6.164 Atomic orbital electron populations 1.23150 0.77576 1.04449 1.01783 1.86076 1.22040 1.26667 1.87977 1.18696 0.91466 0.84395 0.92590 1.20392 0.92932 0.97337 1.15998 1.18392 0.81972 0.92415 0.92638 1.86263 1.14727 1.29582 1.87741 1.22530 0.90342 0.87150 1.04258 1.20005 0.87327 0.85675 0.76812 1.90798 1.79713 1.20800 1.46768 1.45871 1.06302 1.09223 1.76496 1.21053 0.78451 0.99448 0.96868 0.89063 1.21904 0.94878 1.03170 0.96727 1.21600 0.95118 0.96935 1.01714 1.19785 0.83125 1.00868 0.98624 0.87142 1.24854 0.98178 0.82122 1.03214 1.74303 0.94324 1.26011 1.18496 1.74304 1.18015 1.03796 1.17422 1.26586 0.85012 0.97749 1.04138 1.44137 1.08164 1.11854 1.55205 1.21533 0.95097 1.03180 0.94784 1.21809 0.94617 0.97791 1.02130 1.19501 0.92728 0.94366 1.11701 1.24810 1.05918 0.97775 0.88364 1.86697 1.36952 1.92771 1.16254 0.95189 0.77643 0.78164 0.90268 1.20781 0.92699 0.97890 0.94675 1.21125 1.00458 0.91773 1.12433 0.92306 0.87853 0.92145 0.84401 0.88676 0.88562 0.76281 0.90566 0.90892 0.90640 0.91647 0.76108 0.73104 0.90083 0.91430 0.90463 0.90396 0.86478 0.78387 1.18199 1.18611 0.84447 0.84770 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 0.03 -0.07 9.81 101.05 0.99 0.92 16 2 O -0.31 -0.18 10.49 -19.42 -0.20 -0.39 16 3 C 0.17 0.15 6.68 -39.24 -0.26 -0.11 16 4 C -0.25 -0.19 8.97 -39.29 -0.35 -0.54 16 5 C 0.19 0.36 6.66 -39.24 -0.26 0.10 16 6 O -0.27 -0.75 8.99 -39.35 -0.35 -1.11 16 7 C 0.04 -0.04 5.22 36.01 0.19 0.15 16 8 C 0.52 0.36 7.87 -10.98 -0.09 0.27 16 9 O -0.51 -2.82 16.16 -14.35 -0.23 -3.05 16 10 N -0.73 1.94 5.08 -53.81 -0.27 1.67 16 11 C 0.15 -0.35 2.45 -67.93 -0.17 -0.51 16 12 H 0.09 -0.03 7.58 -51.93 -0.39 -0.42 16 13 C -0.13 0.31 5.49 -26.73 -0.15 0.16 16 14 C -0.11 0.33 4.97 -26.74 -0.13 0.20 16 15 C 0.00 0.01 2.66 -91.77 -0.24 -0.24 16 16 H 0.11 -0.21 8.14 -51.93 -0.42 -0.63 16 17 C 0.19 0.13 6.99 -154.99 -1.08 -0.95 16 18 N -0.29 -1.39 12.21 32.80 0.40 -0.99 16 19 N -0.30 -1.40 12.21 29.69 0.36 -1.04 16 20 C 0.15 0.01 13.19 -89.95 -1.19 -1.18 16 21 N -0.58 0.89 5.96 -11.36 -0.07 0.82 16 22 C -0.11 0.30 5.18 -26.73 -0.14 0.16 16 23 C -0.13 0.49 5.39 -26.73 -0.14 0.34 16 24 C -0.18 -0.26 5.27 -104.45 -0.55 -0.81 16 25 C -0.06 -0.11 2.37 36.00 0.09 -0.02 16 26 O -0.52 -1.84 12.88 -35.23 -0.45 -2.30 16 27 Si 0.69 -0.08 30.24 -169.99 -5.14 -5.22 16 28 C -0.04 0.00 8.65 -39.63 -0.34 -0.34 16 29 C -0.24 0.04 9.04 -39.41 -0.36 -0.31 16 30 H 0.06 -0.20 7.66 -51.93 -0.40 -0.60 16 31 H 0.10 -0.43 8.14 -51.93 -0.42 -0.85 16 32 H 0.06 -0.22 7.66 -51.93 -0.40 -0.62 16 33 H 0.14 -0.17 6.30 -52.48 -0.33 -0.50 16 34 H 0.10 -0.30 7.65 -51.93 -0.40 -0.69 16 35 H 0.10 -0.34 7.67 -51.93 -0.40 -0.74 16 36 H 0.40 -2.28 8.60 -40.82 -0.35 -2.63 16 37 H 0.08 -0.03 8.14 -51.93 -0.42 -0.45 16 38 H 0.07 -0.22 8.14 -51.93 -0.42 -0.65 16 39 H 0.07 -0.18 8.14 -51.93 -0.42 -0.61 16 40 H 0.06 -0.22 7.52 -51.93 -0.39 -0.61 16 41 H 0.22 -0.94 8.06 -52.49 -0.42 -1.36 16 42 H 0.43 -2.05 8.28 -40.82 -0.34 -2.39 16 43 H 0.08 -0.15 8.14 -51.93 -0.42 -0.57 16 44 H 0.07 -0.19 8.14 -51.93 -0.42 -0.61 16 45 H 0.08 -0.37 8.14 -51.93 -0.42 -0.79 16 46 H 0.08 -0.30 8.14 -51.92 -0.42 -0.73 16 47 H 0.12 0.30 7.82 -51.93 -0.41 -0.10 16 48 H 0.37 0.05 8.70 45.56 0.40 0.45 16 49 H -0.26 -0.86 7.11 56.52 0.40 -0.45 16 50 H -0.26 -0.23 6.68 56.52 0.38 0.14 16 51 H 0.14 -0.23 4.85 -52.49 -0.25 -0.48 16 52 H 0.13 -0.30 6.29 -52.48 -0.33 -0.63 16 LS Contribution 422.83 15.07 6.37 6.37 Total: 0.00 -14.25 422.83 -11.22 -25.47 By element: Atomic # 1 Polarization: -10.10 SS G_CDS: -7.44 Total: -17.54 kcal Atomic # 6 Polarization: 1.49 SS G_CDS: -4.19 Total: -2.70 kcal Atomic # 7 Polarization: 0.04 SS G_CDS: 0.42 Total: 0.46 kcal Atomic # 8 Polarization: -5.60 SS G_CDS: -1.24 Total: -6.84 kcal Atomic # 14 Polarization: -0.08 SS G_CDS: -5.14 Total: -5.22 kcal Total LS contribution 6.37 Total: 6.37 kcal Total: -14.25 -11.22 -25.47 kcal The number of atoms in the molecule is 52 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_16624780_4974312.mol2 52 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 -8.709 kcal (2) G-P(sol) polarization free energy of solvation -14.248 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -22.957 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -11.219 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -25.466 kcal (6) G-S(sol) free energy of system = (1) + (5) -34.175 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.43 seconds