Wall clock time and date at job start Wed Apr 1 2020 05:23:44 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 1.53003 * 1 3 3 C 1.52999 * 109.46997 * 2 1 4 4 H 1.09000 * 109.47159 * 180.40532 * 3 2 1 5 5 C 1.52998 * 109.47662 * 60.39858 * 3 2 1 6 6 C 1.52999 * 109.46622 * 64.99695 * 5 3 2 7 7 F 1.39900 * 109.47011 * 65.00709 * 6 5 3 8 8 F 1.39901 * 109.46866 * 185.00120 * 6 5 3 9 9 C 1.50703 * 109.46816 * 300.39903 * 3 2 1 10 10 O 1.21280 * 120.00228 * 112.31853 * 9 3 2 11 11 N 1.34775 * 119.99962 * 292.31357 * 9 3 2 12 12 C 1.46503 * 119.99966 * 175.11452 * 11 9 3 13 13 C 1.52999 * 109.47181 * 180.02562 * 12 11 9 14 14 C 1.53009 * 109.47019 * 180.02562 * 13 12 11 15 15 N 1.46904 * 109.46774 * 179.97438 * 14 13 12 16 16 C 1.46899 * 111.00196 * 294.29969 * 15 14 13 17 17 C 1.53230 * 109.33922 * 172.74900 * 16 15 14 18 18 N 1.47078 * 108.52534 * 53.82801 * 17 16 15 19 19 C 1.36936 * 120.88101 * 128.83071 * 18 17 16 20 20 H 1.08004 * 120.00174 * 203.67169 * 19 18 17 21 21 C 1.38812 * 119.99962 * 23.67828 * 19 18 17 22 22 N 1.31616 * 120.00149 * 16.23156 * 21 19 18 23 23 Si 1.86795 * 119.99889 * 196.22795 * 21 19 18 24 24 H 1.48507 * 109.47278 * 60.00350 * 23 21 19 25 25 H 1.48503 * 109.47332 * 179.97438 * 23 21 19 26 26 H 1.48493 * 109.47587 * 300.00099 * 23 21 19 27 27 C 1.47086 * 118.23698 * 308.82000 * 18 17 16 28 28 C 1.46898 * 110.99393 * 169.99946 * 15 14 13 29 29 H 1.09002 * 109.47290 * 54.73894 * 1 2 3 30 30 H 1.08995 * 109.47483 * 294.73528 * 1 2 3 31 31 H 1.09002 * 109.47127 * 174.73318 * 1 2 3 32 32 H 1.08995 * 109.47059 * 119.99569 * 2 1 3 33 33 H 1.09000 * 109.47002 * 239.99805 * 2 1 3 34 34 H 1.08989 * 109.47478 * 185.00127 * 5 3 2 35 35 H 1.09002 * 109.46822 * 305.00245 * 5 3 2 36 36 H 1.09002 * 109.47369 * 305.00256 * 6 5 3 37 37 H 0.97000 * 120.00812 * 355.12149 * 11 9 3 38 38 H 1.09002 * 109.47026 * 300.00162 * 12 11 9 39 39 H 1.08997 * 109.47047 * 60.00141 * 12 11 9 40 40 H 1.09002 * 109.46900 * 299.99783 * 13 12 11 41 41 H 1.08997 * 109.47388 * 59.99894 * 13 12 11 42 42 H 1.09002 * 109.46987 * 299.99582 * 14 13 12 43 43 H 1.08997 * 109.47248 * 59.99660 * 14 13 12 44 44 H 1.09003 * 109.48951 * 292.70882 * 16 15 14 45 45 H 1.09003 * 109.49278 * 52.78867 * 16 15 14 46 46 H 1.09002 * 109.63143 * 294.12255 * 17 16 15 47 47 H 1.08998 * 109.62830 * 173.53980 * 17 16 15 48 48 H 0.96996 * 120.00214 * 179.97438 * 22 21 19 49 49 H 1.09000 * 109.62471 * 291.46925 * 27 18 17 50 50 H 1.09004 * 109.78564 * 170.98502 * 27 18 17 51 51 H 1.09003 * 109.49439 * 307.20684 * 28 15 14 52 52 H 1.09000 * 109.49567 * 67.29485 * 28 15 14 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 3.1300 1.4425 -0.0073 5 6 1.5383 2.1610 1.2542 6 6 2.1565 1.5130 2.4947 7 9 3.5413 1.7117 2.4834 8 9 1.6114 2.0938 3.6448 9 6 1.5295 2.1557 -1.2255 10 8 0.7228 3.0541 -1.1124 11 7 1.9696 1.7952 -2.4473 12 6 1.3954 2.4138 -3.6447 13 6 2.0654 1.8315 -4.8909 14 6 1.4661 2.4781 -6.1415 15 7 2.1099 1.9193 -7.3379 16 6 3.5308 2.2880 -7.3919 17 6 4.2050 1.5419 -8.5482 18 7 3.4466 1.8064 -9.7803 19 6 4.0783 2.2416 -10.9147 20 1 3.5251 2.7859 -11.6658 21 6 5.4295 1.9830 -11.0992 22 7 6.0300 1.0671 -10.3693 23 14 6.3957 2.9350 -12.3836 24 1 6.3481 4.3847 -12.0648 25 1 7.8076 2.4747 -12.3827 26 1 5.7998 2.7031 -13.7238 27 6 1.9917 1.5909 -9.7618 28 6 1.4047 2.3350 -8.5577 29 1 -0.3634 0.5933 -0.8391 30 1 -0.3634 0.4300 0.9333 31 1 -0.3633 -1.0233 -0.0943 32 1 1.8933 -0.5137 0.8900 33 1 1.8933 -0.5139 -0.8900 34 1 1.8263 3.2112 1.2110 35 1 0.4523 2.0839 1.3070 36 1 1.9427 0.4442 2.4911 37 1 2.6665 1.1260 -2.5340 38 1 0.3249 2.2118 -3.6802 39 1 1.5611 3.4906 -3.6124 40 1 3.1360 2.0331 -4.8556 41 1 1.8994 0.7547 -4.9231 42 1 0.3954 2.2767 -6.1770 43 1 1.6325 3.5548 -6.1090 44 1 3.6220 3.3626 -7.5501 45 1 4.0131 2.0158 -6.4531 46 1 4.2066 0.4716 -8.3420 47 1 5.2289 1.8967 -8.6652 48 1 6.9742 0.8862 -10.4985 49 1 1.7806 0.5252 -9.6721 50 1 1.5500 1.9756 -10.6810 51 1 0.3451 2.0969 -8.4643 52 1 1.5255 3.4090 -8.6996 RHF calculation, no. of doubly occupied orbitals= 67 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=-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 ZINC001660883689.mol2 52 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Wed Apr 1 2020 05:23:44 Heat of formation + Delta-G solvation = -129.438332 kcal Electronic energy + Delta-G solvation = -30749.074819 eV Core-core repulsion = 26226.218737 eV Total energy + Delta-G solvation = -4522.856083 eV No. of doubly occupied orbitals = 67 Molecular weight (most abundant/longest-lived isotopes) = 347.213 amu Computer time = 5.93 seconds Orbital eigenvalues (eV) -49.36435 -47.36679 -40.45656 -38.32659 -36.53618 -35.74934 -34.42019 -32.10972 -31.10353 -30.55203 -29.91572 -27.85293 -26.58751 -24.49487 -24.11329 -22.99304 -22.50064 -21.85626 -21.11125 -19.73377 -19.10320 -18.18404 -17.93013 -17.10870 -16.88281 -16.38423 -16.32605 -16.03372 -15.47406 -15.23134 -14.79710 -14.51177 -14.29975 -14.25848 -13.85051 -13.83758 -13.71337 -13.60650 -13.43875 -13.28772 -13.15283 -13.02409 -12.93784 -12.45525 -12.17046 -12.02265 -11.82222 -11.60120 -11.49234 -11.36369 -11.32454 -11.20368 -11.03128 -10.90920 -10.73083 -10.45381 -10.29914 -10.08140 -10.01285 -9.74479 -9.61296 -9.33554 -8.52033 -7.84775 -6.71239 -5.78261 -3.18211 2.30085 2.73508 3.37480 3.42669 3.43183 3.44290 3.75118 3.86117 4.08174 4.27770 4.31248 4.36478 4.49155 4.50104 4.73194 4.81599 4.87701 4.97945 5.04342 5.10092 5.15593 5.34623 5.36888 5.37877 5.42375 5.45901 5.49499 5.55282 5.59905 5.68557 5.80648 5.87285 5.92770 6.01972 6.10870 6.13974 6.20790 6.23754 6.34218 6.52693 6.68350 6.90608 7.17460 7.26713 7.58772 7.64286 7.69723 7.81477 7.89201 8.41807 9.20489 9.84089 10.40629 11.29875 Molecular weight = 347.21amu Principal moments of inertia in cm(-1) A = 0.020751 B = 0.001633 C = 0.001571 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1349.035019 B =17142.822330 C =17820.673842 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.161 4.161 2 C -0.121 4.121 3 C -0.111 4.111 4 H 0.106 0.894 5 C -0.155 4.155 6 C 0.259 3.741 7 F -0.205 7.205 8 F -0.205 7.205 9 C 0.522 3.478 10 O -0.539 6.539 11 N -0.726 5.726 12 C 0.121 3.879 13 C -0.128 4.128 14 C 0.058 3.942 15 N -0.533 5.533 16 C 0.033 3.967 17 C 0.174 3.826 18 N -0.596 5.596 19 C -0.248 4.248 20 H 0.067 0.933 21 C -0.003 4.003 22 N -0.907 5.907 23 Si 0.904 3.096 24 H -0.285 1.285 25 H -0.290 1.290 26 H -0.283 1.283 27 C 0.149 3.851 28 C 0.045 3.955 29 H 0.060 0.940 30 H 0.059 0.941 31 H 0.062 0.938 32 H 0.075 0.925 33 H 0.078 0.922 34 H 0.095 0.905 35 H 0.107 0.893 36 H 0.112 0.888 37 H 0.403 0.597 38 H 0.067 0.933 39 H 0.067 0.933 40 H 0.072 0.928 41 H 0.078 0.922 42 H 0.069 0.931 43 H 0.028 0.972 44 H 0.024 0.976 45 H 0.062 0.938 46 H 0.024 0.976 47 H 0.097 0.903 48 H 0.254 0.746 49 H 0.025 0.975 50 H 0.055 0.945 51 H 0.061 0.939 52 H 0.027 0.973 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -9.718 -2.571 24.568 26.545 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 -0.218 4.218 2 C -0.158 4.158 3 C -0.132 4.132 4 H 0.124 0.876 5 C -0.193 4.193 6 C 0.206 3.794 7 F -0.187 7.187 8 F -0.187 7.187 9 C 0.308 3.692 10 O -0.416 6.416 11 N -0.377 5.377 12 C -0.003 4.003 13 C -0.166 4.166 14 C -0.071 4.071 15 N -0.258 5.258 16 C -0.096 4.096 17 C 0.048 3.952 18 N -0.320 5.320 19 C -0.378 4.378 20 H 0.085 0.915 21 C -0.201 4.201 22 N -0.552 5.552 23 Si 0.734 3.266 24 H -0.212 1.212 25 H -0.216 1.216 26 H -0.209 1.209 27 C 0.022 3.978 28 C -0.085 4.085 29 H 0.079 0.921 30 H 0.078 0.922 31 H 0.081 0.919 32 H 0.093 0.907 33 H 0.096 0.904 34 H 0.114 0.886 35 H 0.125 0.875 36 H 0.130 0.870 37 H 0.237 0.763 38 H 0.085 0.915 39 H 0.085 0.915 40 H 0.090 0.910 41 H 0.096 0.904 42 H 0.088 0.912 43 H 0.047 0.953 44 H 0.042 0.958 45 H 0.080 0.920 46 H 0.042 0.958 47 H 0.115 0.885 48 H 0.064 0.936 49 H 0.043 0.957 50 H 0.073 0.927 51 H 0.079 0.921 52 H 0.046 0.954 Dipole moment (debyes) X Y Z Total from point charges -10.143 -2.465 24.635 26.755 hybrid contribution 1.033 1.111 -0.681 1.662 sum -9.110 -1.354 23.955 25.664 Atomic orbital electron populations 1.21906 0.94827 1.02417 1.02657 1.21619 0.97170 0.93465 1.03573 1.21326 1.02753 0.96356 0.92795 0.87592 1.22508 1.03692 1.01997 0.91151 1.22018 0.74914 0.98906 0.83573 1.92995 1.32239 1.96716 1.96735 1.92996 1.85570 1.87215 1.52895 1.20280 0.81468 0.83059 0.84393 1.90726 1.34140 1.30138 1.86556 1.46003 1.41802 1.44147 1.05789 1.21364 0.97942 0.97828 0.83184 1.21798 1.00762 1.01569 0.92465 1.21938 0.98595 0.96239 0.90291 1.61967 1.03312 1.59295 1.01241 1.22967 0.87642 0.98253 1.00782 1.20985 0.96291 0.96051 0.81888 1.44149 1.01159 1.77816 1.08858 1.19206 0.92764 1.27823 0.97958 0.91546 1.24962 0.98300 0.97765 0.99031 1.69986 1.10767 1.31678 1.42807 0.86331 0.79144 0.79754 0.81322 1.21182 1.21611 1.20935 1.20968 0.86106 0.96675 0.94073 1.22608 0.96682 0.97805 0.91369 0.92142 0.92201 0.91917 0.90656 0.90354 0.88606 0.87470 0.87043 0.76293 0.91456 0.91488 0.90960 0.90363 0.91242 0.95346 0.95810 0.92017 0.95808 0.88532 0.93588 0.95695 0.92657 0.92051 0.95443 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 18. 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 -0.86 9.27 37.16 0.34 -0.52 16 2 C -0.12 -0.52 5.47 -26.73 -0.15 -0.66 16 3 C -0.11 -0.67 2.46 -91.77 -0.23 -0.90 16 4 H 0.11 0.53 7.82 -51.93 -0.41 0.13 16 5 C -0.16 -1.03 4.00 -26.73 -0.11 -1.14 16 6 C 0.26 1.57 5.16 37.16 0.19 1.76 16 7 F -0.21 -1.64 16.93 2.25 0.04 -1.61 16 8 F -0.21 -1.71 17.34 2.25 0.04 -1.67 16 9 C 0.52 4.82 5.70 -10.98 -0.06 4.76 16 10 O -0.54 -7.06 16.02 5.56 0.09 -6.97 16 11 N -0.73 -5.93 5.55 -60.29 -0.33 -6.26 16 12 C 0.12 1.17 5.68 -4.04 -0.02 1.14 16 13 C -0.13 -1.35 5.26 -26.73 -0.14 -1.49 16 14 C 0.06 0.76 4.96 -3.82 -0.02 0.74 16 15 N -0.53 -9.06 4.63 -234.31 -1.08 -10.15 16 16 C 0.03 0.62 5.46 -3.71 -0.02 0.60 16 17 C 0.17 4.14 5.45 -3.61 -0.02 4.12 16 18 N -0.60 -15.02 3.05 -172.01 -0.52 -15.54 16 19 C -0.25 -6.80 9.68 -15.06 -0.15 -6.94 16 20 H 0.07 1.78 7.86 -52.48 -0.41 1.37 16 21 C 0.00 -0.08 4.99 -17.43 -0.09 -0.17 16 22 N -0.91 -26.05 10.88 55.49 0.60 -25.45 16 23 Si 0.90 21.61 29.58 -169.99 -5.03 16.58 16 24 H -0.29 -6.76 7.11 56.52 0.40 -6.36 16 25 H -0.29 -6.97 7.11 56.52 0.40 -6.57 16 26 H -0.28 -6.69 7.11 56.52 0.40 -6.28 16 27 C 0.15 3.13 6.69 -3.60 -0.02 3.10 16 28 C 0.04 0.79 5.62 -3.70 -0.02 0.77 16 29 H 0.06 0.45 7.02 -51.93 -0.36 0.09 16 30 H 0.06 0.29 6.62 -51.93 -0.34 -0.05 16 31 H 0.06 0.29 8.14 -51.93 -0.42 -0.13 16 32 H 0.07 0.20 6.44 -51.93 -0.33 -0.14 16 33 H 0.08 0.30 8.14 -51.93 -0.42 -0.12 16 34 H 0.10 0.78 8.07 -51.94 -0.42 0.36 16 35 H 0.11 0.72 6.30 -51.93 -0.33 0.39 16 36 H 0.11 0.34 6.34 -51.93 -0.33 0.01 16 37 H 0.40 2.39 8.48 -40.82 -0.35 2.04 16 38 H 0.07 0.68 8.14 -51.93 -0.42 0.25 16 39 H 0.07 0.73 8.14 -51.93 -0.42 0.31 16 40 H 0.07 0.80 6.40 -51.93 -0.33 0.47 16 41 H 0.08 0.83 8.14 -51.93 -0.42 0.40 16 42 H 0.07 0.83 7.97 -51.93 -0.41 0.42 16 43 H 0.03 0.38 8.12 -51.93 -0.42 -0.04 16 44 H 0.02 0.48 8.14 -51.93 -0.42 0.05 16 45 H 0.06 1.03 6.16 -51.93 -0.32 0.71 16 46 H 0.02 0.61 8.14 -51.93 -0.42 0.18 16 47 H 0.10 2.56 5.85 -51.93 -0.30 2.26 16 48 H 0.25 7.06 8.31 -40.82 -0.34 6.72 16 49 H 0.03 0.54 8.14 -51.93 -0.42 0.12 16 50 H 0.05 1.12 7.95 -51.93 -0.41 0.70 16 51 H 0.06 0.92 7.99 -51.93 -0.41 0.51 16 52 H 0.03 0.51 8.14 -51.93 -0.42 0.08 16 LS Contribution 408.11 15.07 6.15 6.15 Total: -1.00 -32.46 408.11 -9.40 -41.86 By element: Atomic # 1 Polarization: 6.72 SS G_CDS: -8.84 Total: -2.12 kcal Atomic # 6 Polarization: 5.68 SS G_CDS: -0.51 Total: 5.18 kcal Atomic # 7 Polarization: -56.06 SS G_CDS: -1.34 Total: -57.40 kcal Atomic # 8 Polarization: -7.06 SS G_CDS: 0.09 Total: -6.97 kcal Atomic # 9 Polarization: -3.36 SS G_CDS: 0.08 Total: -3.28 kcal Atomic # 14 Polarization: 21.61 SS G_CDS: -5.03 Total: 16.58 kcal Total LS contribution 6.15 Total: 6.15 kcal Total: -32.46 -9.40 -41.86 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. ZINC001660883689.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 -87.578 kcal (2) G-P(sol) polarization free energy of solvation -32.461 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -120.039 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.400 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -41.860 kcal (6) G-S(sol) free energy of system = (1) + (5) -129.438 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 5.94 seconds