Wall clock time and date at job start Wed Apr 1 2020 03:51:35 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 1.50698 * 1 3 3 N 1.30839 * 125.89896 * 2 1 4 4 N 1.40081 * 108.20856 * 180.02562 * 3 2 1 5 5 H 0.97001 * 126.03646 * 180.02562 * 4 3 2 6 6 C 1.34950 * 107.92320 * 359.75316 * 4 3 2 7 7 C 1.50698 * 126.12691 * 180.24070 * 6 4 3 8 8 C 1.35317 * 107.74393 * 0.39177 * 6 4 3 9 9 C 1.50701 * 126.03758 * 179.87163 * 8 6 4 10 10 C 1.50698 * 109.47263 * 269.71685 * 9 8 6 11 11 O 1.21285 * 120.00049 * 0.02562 * 10 9 8 12 12 N 1.34774 * 120.00330 * 179.97438 * 10 9 8 13 13 C 1.46495 * 120.00272 * 179.97438 * 12 10 9 14 14 H 1.09002 * 109.03577 * 35.00530 * 13 12 10 15 15 C 1.52528 * 109.04874 * 276.03877 * 13 12 10 16 16 C 1.53805 * 111.70860 * 293.48886 * 15 13 12 17 17 C 1.51617 * 107.03555 * 302.45803 * 16 15 13 18 18 H 1.08996 * 110.50753 * 304.77874 * 17 16 15 19 19 C 1.53065 * 116.66838 * 176.22332 * 17 16 15 20 20 N 1.48660 * 103.44260 * 204.13534 * 19 17 16 21 21 C 1.36938 * 125.77978 * 204.33987 * 20 19 17 22 22 H 1.08007 * 119.99771 * 170.33698 * 21 20 19 23 23 C 1.38810 * 120.00558 * 350.33632 * 21 20 19 24 24 N 1.31621 * 119.99684 * 350.27368 * 23 21 20 25 25 Si 1.86796 * 120.00280 * 170.27926 * 23 21 20 26 26 H 1.48499 * 109.47221 * 94.16316 * 25 23 21 27 27 H 1.48504 * 109.46874 * 214.15800 * 25 23 21 28 28 H 1.48492 * 109.47137 * 334.16080 * 25 23 21 29 29 C 1.48237 * 108.43446 * 24.37822 * 20 19 17 30 30 C 1.52323 * 105.86411 * 3.18461 * 29 20 19 31 31 H 1.08998 * 109.87433 * 87.66885 * 30 29 20 32 32 C 1.51280 * 117.48395 * 214.68685 * 30 29 20 33 33 H 1.09005 * 109.47046 * 269.97818 * 1 2 3 34 34 H 1.08996 * 109.47099 * 29.97546 * 1 2 3 35 35 H 1.08997 * 109.47054 * 149.98027 * 1 2 3 36 36 H 1.09001 * 109.47490 * 270.17941 * 7 6 4 37 37 H 1.09007 * 109.47460 * 30.17875 * 7 6 4 38 38 H 1.08998 * 109.47400 * 150.17706 * 7 6 4 39 39 H 1.08997 * 109.46928 * 149.71360 * 9 8 6 40 40 H 1.09003 * 109.46731 * 29.71512 * 9 8 6 41 41 H 0.97003 * 119.99727 * 0.02562 * 12 10 9 42 42 H 1.09000 * 109.02840 * 54.06659 * 15 13 12 43 43 H 1.09000 * 109.03187 * 172.99109 * 15 13 12 44 44 H 1.09001 * 109.94108 * 61.84123 * 16 15 13 45 45 H 1.09001 * 109.94162 * 182.98806 * 16 15 13 46 46 H 1.08999 * 110.62896 * 322.62111 * 19 17 16 47 47 H 1.08994 * 110.62940 * 85.64804 * 19 17 16 48 48 H 0.96995 * 120.00123 * 179.97438 * 24 23 21 49 49 H 1.09007 * 110.17139 * 244.08617 * 29 20 19 50 50 H 1.09000 * 110.17393 * 122.28980 * 29 20 19 51 51 H 1.09007 * 109.95427 * 59.39914 * 32 30 29 52 52 H 1.08996 * 109.85442 * 298.21205 * 32 30 29 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 7 2.2742 1.0599 0.0000 4 7 3.6087 0.6342 -0.0006 5 1 4.3908 1.2081 -0.0004 6 6 3.6142 -0.7153 0.0046 7 6 4.8350 -1.5988 0.0110 8 6 2.3271 -1.1329 -0.0005 9 6 1.8599 -2.5657 -0.0002 10 6 1.7039 -3.0435 -1.4208 11 8 1.9484 -2.2945 -2.3429 12 7 1.2935 -4.3035 -1.6669 13 6 1.1413 -4.7678 -3.0479 14 1 1.9125 -4.3068 -3.6650 15 6 -0.2295 -4.3458 -3.5667 16 6 -1.3661 -5.0688 -2.8243 17 6 -1.1359 -6.5569 -3.0009 18 1 -1.0643 -6.8094 -4.0588 19 6 -2.1001 -7.4930 -2.2680 20 7 -1.3182 -8.7488 -2.1214 21 6 -1.8419 -10.0050 -1.9699 22 1 -1.1969 -10.8694 -2.0275 23 6 -3.2015 -10.1674 -1.7424 24 7 -3.9549 -9.1200 -1.4819 25 14 -3.9620 -11.8724 -1.8059 26 1 -4.0070 -12.4456 -0.4368 27 1 -5.3410 -11.7793 -2.3491 28 1 -3.1428 -12.7475 -2.6823 29 6 0.1244 -8.4106 -2.1659 30 6 0.1933 -6.8921 -2.2644 31 1 0.1846 -6.4553 -1.2658 32 6 1.3151 -6.2960 -3.0858 33 1 -0.3633 -0.0004 1.0277 34 1 -0.3633 0.8902 -0.5134 35 1 -0.3633 -0.8898 -0.5141 36 1 5.1339 -1.8132 -1.0150 37 1 5.6490 -1.0902 0.5278 38 1 4.6054 -2.5321 0.5251 39 1 0.9013 -2.6351 0.5139 40 1 2.5936 -3.1869 0.5136 41 1 1.0983 -4.9027 -0.9294 42 1 -0.3447 -3.2703 -3.4323 43 1 -0.2950 -4.5801 -4.6292 44 1 -1.3409 -4.8118 -1.7653 45 1 -2.3281 -4.7867 -3.2521 46 1 -2.3612 -7.0869 -1.2908 47 1 -2.9956 -7.6658 -2.8649 48 1 -4.9050 -9.2334 -1.3233 49 1 0.5903 -8.8655 -3.0401 50 1 0.6186 -8.7512 -1.2560 51 1 1.2528 -6.6518 -4.1143 52 1 2.2771 -6.5715 -2.6538 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 ZINC000980256228.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 03:51:35 Heat of formation + Delta-G solvation = 45.163413 kcal Electronic energy + Delta-G solvation = -31218.096657 eV Core-core repulsion = 27218.926971 eV Total energy + Delta-G solvation = -3999.169685 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 346.211 amu Computer time = 1.12 seconds Orbital eigenvalues (eV) -41.58925 -40.22414 -38.59653 -35.60000 -33.62644 -33.30406 -33.01041 -31.83026 -30.73534 -29.49728 -28.71719 -27.75421 -26.52037 -25.98358 -24.96610 -21.97356 -21.54694 -20.55509 -20.31941 -19.82080 -19.42765 -18.86334 -17.53587 -17.08913 -16.69171 -15.87354 -15.31424 -15.24571 -14.83378 -14.54761 -14.17174 -13.99378 -13.84356 -13.71841 -13.53471 -13.42767 -13.28079 -13.11920 -12.68297 -12.60317 -12.47962 -12.38579 -12.24825 -12.06665 -11.93086 -11.76288 -11.39745 -11.20550 -11.10785 -10.78819 -10.73999 -10.66050 -10.60025 -10.01369 -9.93950 -9.83704 -9.78795 -9.52249 -9.37699 -9.31963 -8.85657 -8.56749 -8.53550 -6.78572 -5.72624 -3.04205 1.68515 2.48665 2.67130 2.74421 3.39989 3.40710 3.46047 3.47964 4.39076 4.47142 4.49787 4.73715 4.79947 4.89217 4.91049 5.00726 5.07518 5.10223 5.18671 5.27478 5.33462 5.37752 5.42399 5.48628 5.51696 5.54291 5.67054 5.69980 5.75396 5.78889 5.80270 5.86283 5.97245 6.03969 6.16620 6.21932 6.26537 6.27042 6.40647 6.50604 6.53175 6.61427 6.67638 6.69329 6.84108 7.03565 7.10876 7.53460 7.54065 7.60304 7.62187 7.80072 8.25178 8.34507 9.19499 9.81995 10.51374 11.40652 Molecular weight = 346.21amu Principal moments of inertia in cm(-1) A = 0.021076 B = 0.002220 C = 0.002167 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1328.206409 B =12608.413077 C =12916.206231 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.076 4.076 2 C 0.096 3.904 3 N -0.299 5.299 4 N -0.478 5.478 5 H 0.436 0.564 6 C 0.100 3.900 7 C -0.094 4.094 8 C -0.214 4.214 9 C -0.064 4.064 10 C 0.512 3.488 11 O -0.537 6.537 12 N -0.724 5.724 13 C 0.152 3.848 14 H 0.080 0.920 15 C -0.126 4.126 16 C -0.099 4.099 17 C -0.116 4.116 18 H 0.068 0.932 19 C 0.185 3.815 20 N -0.607 5.607 21 C -0.226 4.226 22 H 0.074 0.926 23 C -0.009 4.009 24 N -0.918 5.918 25 Si 0.908 3.092 26 H -0.290 1.290 27 H -0.290 1.290 28 H -0.281 1.281 29 C 0.143 3.857 30 C -0.105 4.105 31 H 0.066 0.934 32 C -0.109 4.109 33 H 0.078 0.922 34 H 0.073 0.927 35 H 0.077 0.923 36 H 0.082 0.918 37 H 0.070 0.930 38 H 0.085 0.915 39 H 0.101 0.899 40 H 0.096 0.904 41 H 0.400 0.600 42 H 0.061 0.939 43 H 0.065 0.935 44 H 0.060 0.940 45 H 0.061 0.939 46 H 0.026 0.974 47 H 0.066 0.934 48 H 0.252 0.748 49 H 0.022 0.978 50 H 0.023 0.977 51 H 0.078 0.922 52 H 0.065 0.935 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 15.466 16.395 3.089 22.749 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 -0.135 4.135 2 C -0.071 4.071 3 N -0.122 5.122 4 N -0.186 5.186 5 H 0.280 0.720 6 C -0.028 4.028 7 C -0.153 4.153 8 C -0.225 4.225 9 C -0.105 4.105 10 C 0.298 3.702 11 O -0.414 6.414 12 N -0.377 5.377 13 C 0.048 3.952 14 H 0.098 0.902 15 C -0.165 4.165 16 C -0.137 4.137 17 C -0.136 4.136 18 H 0.087 0.913 19 C 0.060 3.940 20 N -0.334 5.334 21 C -0.355 4.355 22 H 0.092 0.908 23 C -0.205 4.205 24 N -0.565 5.565 25 Si 0.739 3.261 26 H -0.217 1.217 27 H -0.217 1.217 28 H -0.207 1.207 29 C 0.017 3.983 30 C -0.124 4.124 31 H 0.084 0.916 32 C -0.147 4.147 33 H 0.096 0.904 34 H 0.092 0.908 35 H 0.096 0.904 36 H 0.101 0.899 37 H 0.089 0.911 38 H 0.104 0.896 39 H 0.119 0.881 40 H 0.114 0.886 41 H 0.236 0.764 42 H 0.080 0.920 43 H 0.084 0.916 44 H 0.078 0.922 45 H 0.079 0.921 46 H 0.044 0.956 47 H 0.085 0.915 48 H 0.062 0.938 49 H 0.040 0.960 50 H 0.041 0.959 51 H 0.096 0.904 52 H 0.083 0.917 Dipole moment (debyes) X Y Z Total from point charges 15.463 18.096 2.447 23.928 hybrid contribution -0.118 -1.756 0.375 1.799 sum 15.345 16.340 2.822 22.593 Atomic orbital electron populations 1.20205 0.86760 1.03652 1.02860 1.22158 0.96876 0.90092 0.97959 1.77264 0.86393 1.22274 1.26303 1.46052 1.07308 1.04706 1.60496 0.72044 1.20781 0.96790 0.84986 1.00276 1.20482 0.92829 0.98305 1.03658 1.18997 0.91278 0.94685 1.17586 1.19930 1.03603 0.92484 0.94471 1.20670 0.76465 0.81596 0.91473 1.90687 1.49879 1.54542 1.46249 1.46286 1.68680 1.13514 1.09240 1.20994 0.97449 0.94243 0.82521 0.90165 1.21911 0.94318 1.00172 1.00055 1.21257 0.97367 0.94964 1.00112 1.22384 0.97073 0.94350 0.99744 0.91312 1.21100 0.92706 0.83496 0.96684 1.45107 0.98808 1.03562 1.85883 1.19019 0.91744 0.82834 1.41885 0.90774 1.24795 0.96774 0.97300 1.01644 1.69954 1.05379 1.27693 1.53507 0.86162 0.78680 0.83680 0.77592 1.21698 1.21660 1.20679 1.20985 0.87937 0.91633 0.97711 1.21731 0.95569 0.96838 0.98309 0.91614 1.21566 0.98750 0.92994 1.01428 0.90382 0.90817 0.90376 0.89912 0.91128 0.89587 0.88115 0.88567 0.76394 0.91999 0.91596 0.92162 0.92070 0.95592 0.91538 0.93794 0.96015 0.95863 0.90358 0.91659 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 17. 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 -0.08 -0.73 10.12 36.00 0.36 -0.37 16 2 C 0.10 1.16 7.22 -82.41 -0.59 0.56 16 3 N -0.30 -3.80 12.70 33.67 0.43 -3.37 16 4 N -0.48 -4.74 7.36 33.48 0.25 -4.50 16 5 H 0.44 2.87 8.96 -182.61 -1.64 1.23 16 6 C 0.10 0.98 7.21 -82.26 -0.59 0.38 16 7 C -0.09 -0.59 10.22 36.00 0.37 -0.22 16 8 C -0.21 -2.35 4.59 -105.05 -0.48 -2.83 16 9 C -0.06 -0.58 5.64 -29.04 -0.16 -0.74 16 10 C 0.51 6.02 7.73 -10.99 -0.08 5.93 16 11 O -0.54 -8.40 15.68 5.55 0.09 -8.32 16 12 N -0.72 -7.88 4.66 -53.62 -0.25 -8.13 16 13 C 0.15 1.84 2.70 -67.73 -0.18 1.66 16 14 H 0.08 1.04 7.55 -51.93 -0.39 0.64 16 15 C -0.13 -1.64 5.42 -26.55 -0.14 -1.78 16 16 C -0.10 -1.45 5.57 -27.01 -0.15 -1.60 16 17 C -0.12 -2.02 2.50 -89.89 -0.22 -2.24 16 18 H 0.07 1.24 8.01 -51.93 -0.42 0.82 16 19 C 0.18 4.28 5.05 -2.82 -0.01 4.27 16 20 N -0.61 -15.13 3.45 -170.42 -0.59 -15.72 16 21 C -0.23 -6.25 10.26 -15.06 -0.15 -6.40 16 22 H 0.07 1.99 7.85 -52.48 -0.41 1.58 16 23 C -0.01 -0.24 5.41 -17.43 -0.09 -0.34 16 24 N -0.92 -26.67 10.71 55.49 0.59 -26.07 16 25 Si 0.91 21.91 29.56 -169.99 -5.03 16.89 16 26 H -0.29 -6.97 7.11 56.52 0.40 -6.57 16 27 H -0.29 -7.06 7.11 56.52 0.40 -6.66 16 28 H -0.28 -6.63 7.11 56.52 0.40 -6.23 16 29 C 0.14 2.82 6.98 -3.43 -0.02 2.79 16 30 C -0.11 -1.64 2.23 -90.44 -0.20 -1.84 16 31 H 0.07 0.98 6.13 -51.93 -0.32 0.66 16 32 C -0.11 -1.35 5.35 -27.16 -0.15 -1.49 16 33 H 0.08 0.61 8.14 -51.93 -0.42 0.19 16 34 H 0.07 0.69 8.14 -51.93 -0.42 0.27 16 35 H 0.08 0.74 7.92 -51.93 -0.41 0.33 16 36 H 0.08 0.55 8.14 -51.93 -0.42 0.13 16 37 H 0.07 0.29 8.14 -51.93 -0.42 -0.13 16 38 H 0.09 0.45 7.14 -51.93 -0.37 0.08 16 39 H 0.10 0.78 7.92 -51.93 -0.41 0.37 16 40 H 0.10 0.64 7.14 -51.93 -0.37 0.27 16 41 H 0.40 3.88 6.82 -40.82 -0.28 3.60 16 42 H 0.06 0.85 8.10 -51.93 -0.42 0.43 16 43 H 0.07 0.83 8.14 -51.93 -0.42 0.41 16 44 H 0.06 0.87 7.84 -51.93 -0.41 0.46 16 45 H 0.06 0.90 8.14 -51.93 -0.42 0.48 16 46 H 0.03 0.65 8.11 -51.93 -0.42 0.23 16 47 H 0.07 1.75 6.96 -51.93 -0.36 1.39 16 48 H 0.25 7.11 8.31 -40.82 -0.34 6.77 16 49 H 0.02 0.43 8.08 -51.92 -0.42 0.01 16 50 H 0.02 0.46 8.14 -51.93 -0.42 0.04 16 51 H 0.08 0.98 8.03 -51.92 -0.42 0.56 16 52 H 0.06 0.73 8.14 -51.93 -0.42 0.31 16 LS Contribution 405.64 15.07 6.11 6.11 Total: -1.00 -34.77 405.64 -10.90 -45.67 By element: Atomic # 1 Polarization: 11.67 SS G_CDS: -9.98 Total: 1.69 kcal Atomic # 6 Polarization: -1.73 SS G_CDS: -2.52 Total: -4.25 kcal Atomic # 7 Polarization: -58.22 SS G_CDS: 0.43 Total: -57.79 kcal Atomic # 8 Polarization: -8.40 SS G_CDS: 0.09 Total: -8.32 kcal Atomic # 14 Polarization: 21.91 SS G_CDS: -5.03 Total: 16.89 kcal Total LS contribution 6.11 Total: 6.11 kcal Total: -34.77 -10.90 -45.67 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. ZINC000980256228.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 90.837 kcal (2) G-P(sol) polarization free energy of solvation -34.775 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system 56.062 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.899 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -45.673 kcal (6) G-S(sol) free energy of system = (1) + (5) 45.163 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.12 seconds