Wall clock time and date at job start Thu Apr 15 2021 14:32:45 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 N 1.46504 * 1 3 3 C 1.34772 * 120.00072 * 2 1 4 4 O 1.21280 * 119.99869 * 174.83196 * 3 2 1 5 5 C 1.50694 * 120.00069 * 354.82454 * 3 2 1 6 6 C 1.53002 * 109.47294 * 179.97438 * 5 3 2 7 7 Si 1.86298 * 109.47076 * 179.97438 * 6 5 3 8 8 H 1.48495 * 109.47286 * 60.00291 * 7 6 5 9 9 H 1.48508 * 109.47031 * 180.02562 * 7 6 5 10 10 H 1.48503 * 109.47415 * 299.99906 * 7 6 5 11 11 C 1.39441 * 119.99631 * 180.02562 * 2 1 3 12 12 C 1.39134 * 119.92684 * 293.45631 * 11 2 1 13 13 C 1.37665 * 120.07590 * 180.02562 * 12 11 2 14 14 C 1.39758 * 119.92587 * 0.25295 * 13 12 11 15 15 C 1.47570 * 120.07933 * 179.70583 * 14 13 12 16 16 O 1.21604 * 119.99599 * 359.97438 * 15 14 13 17 17 N 1.34765 * 120.00367 * 179.97438 * 15 14 13 18 18 C 1.39884 * 120.00124 * 184.54206 * 17 15 14 19 19 C 1.38977 * 120.08873 * 144.31135 * 18 17 15 20 20 C 1.38256 * 120.48777 * 180.08974 * 19 18 17 21 21 C 1.38102 * 120.14793 * 359.92859 * 20 19 18 22 22 C 1.50458 * 120.25742 * 179.76592 * 21 20 19 23 23 C 1.52593 * 111.17759 * 157.00761 * 22 21 20 24 24 C 1.52993 * 109.32722 * 176.13719 * 23 22 21 25 25 C 1.53002 * 109.32595 * 295.60901 * 23 22 21 26 26 O 1.43319 * 110.33004 * 55.86963 * 23 22 21 27 Xx 1.43351 * 111.35306 * 294.33724 * 26 23 22 28 27 O 1.41996 * 122.03684 * 221.23713 * 27 26 23 29 28 C 1.39539 * 119.45142 * 359.94724 * 21 20 19 30 29 C 1.38725 * 120.65856 * 359.89165 * 29 21 20 31 30 C 1.39767 * 119.84731 * 359.44605 * 14 13 12 32 31 C 1.37655 * 119.92324 * 0.55847 * 31 14 13 33 32 H 1.09002 * 109.46705 * 270.00028 * 1 2 3 34 33 H 1.08998 * 109.47167 * 29.99835 * 1 2 3 35 34 H 1.09005 * 109.47279 * 150.00154 * 1 2 3 36 35 H 1.09003 * 109.47466 * 300.00106 * 5 3 2 37 36 H 1.09002 * 109.47010 * 60.00035 * 5 3 2 38 37 H 1.08995 * 109.47331 * 300.00434 * 6 5 3 39 38 H 1.08999 * 109.46566 * 60.00311 * 6 5 3 40 39 H 1.08005 * 119.96442 * 0.02562 * 12 11 2 41 40 H 1.07999 * 120.03779 * 179.97438 * 13 12 11 42 41 H 0.97000 * 120.00444 * 4.54889 * 17 15 14 43 42 H 1.07998 * 119.75646 * 0.11767 * 19 18 17 44 43 H 1.07994 * 119.92361 * 179.97438 * 20 19 18 45 44 H 1.08992 * 109.13495 * 277.44271 * 22 21 20 46 45 H 1.08993 * 109.13583 * 36.63022 * 22 21 20 47 46 H 1.09001 * 109.47440 * 59.99875 * 24 23 22 48 47 H 1.08998 * 109.47423 * 180.02562 * 24 23 22 49 48 H 1.09005 * 109.46838 * 299.99908 * 24 23 22 50 49 H 1.09002 * 109.47527 * 60.00035 * 25 23 22 51 50 H 1.09003 * 109.46826 * 180.02562 * 25 23 22 52 51 H 1.09002 * 109.46870 * 300.00039 * 25 23 22 53 52 H 0.96698 * 113.99990 * 359.97438 * 28 27 26 54 53 H 1.07997 * 120.28220 * 180.14545 * 30 29 21 55 54 H 1.08008 * 120.03471 * 180.27361 * 31 14 13 56 55 H 1.07999 * 119.96565 * 179.72377 * 32 31 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 7 1.4650 0.0000 0.0000 3 6 2.1389 1.1671 0.0000 4 8 3.3480 1.1692 0.0946 5 6 1.3901 2.4696 -0.1177 6 6 2.3833 3.6331 -0.0919 7 14 1.4575 5.2432 -0.2382 8 1 0.5111 5.3750 0.8984 9 1 2.4216 6.3725 -0.2137 10 1 0.7022 5.2655 -1.5165 11 6 2.1622 -1.2076 -0.0005 12 6 2.0935 -2.0492 1.1053 13 6 2.7809 -3.2420 1.1082 14 6 3.5527 -3.6047 0.0009 15 6 4.2962 -4.8794 0.0031 16 8 4.2381 -5.6154 0.9694 17 7 5.0395 -5.2279 -1.0656 18 6 5.6672 -6.4773 -1.1036 19 6 5.7808 -7.1638 -2.3067 20 6 6.3980 -8.4000 -2.3534 21 6 6.9097 -8.9638 -1.2011 22 6 7.5772 -10.3113 -1.2482 23 6 8.5336 -10.4941 -0.0733 24 6 9.1142 -11.9091 -0.1084 25 6 9.6737 -9.4799 -0.1861 26 8 7.8429 -10.2953 1.1666 27 8 7.4917 -8.2381 2.5359 28 6 6.7990 -8.2750 0.0073 29 6 6.1837 -7.0327 0.0598 30 6 3.6144 -2.7598 -1.1108 31 6 2.9246 -1.5686 -1.1071 32 1 -0.3633 0.0000 1.0277 33 1 -0.3633 0.8900 -0.5138 34 1 -0.3634 -0.8900 -0.5138 35 1 0.8349 2.4861 -1.0556 36 1 0.6959 2.5663 0.7171 37 1 2.9381 3.6165 0.8462 38 1 3.0777 3.5365 -0.9265 39 1 1.5002 -1.7665 1.9623 40 1 2.7275 -3.8946 1.9671 41 1 5.1393 -4.6123 -1.8086 42 1 5.3843 -6.7281 -3.2119 43 1 6.4808 -8.9257 -3.2931 44 1 6.8146 -11.0892 -1.2124 45 1 8.1357 -10.4011 -2.1798 46 1 9.6534 -12.0575 -1.0440 47 1 9.7976 -12.0424 0.7302 48 1 8.3050 -12.6358 -0.0362 49 1 9.2645 -8.4698 -0.1694 50 1 10.3587 -9.6087 0.6520 51 1 10.2104 -9.6391 -1.1213 52 1 7.8768 -8.7564 3.2557 53 1 6.1034 -6.5039 0.9980 54 1 4.2063 -3.0392 -1.9699 55 1 2.9754 -0.9131 -1.9639 There are 74 doubly filled levels RHF calculation, no. of doubly occupied orbitals= 74 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 m_22_12359984_15608440.mol2 56 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Thu Apr 15 2021 14:32:45 Heat of formation + Delta-G solvation = 105.541090 kcal Electronic energy + Delta-G solvation = -36276.577102 eV Core-core repulsion = 31446.653562 eV Total energy + Delta-G solvation = -4829.923539 eV No. of doubly occupied orbitals = 74 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 399.192 amu Computer time = 11.79 seconds Orbital eigenvalues (eV) -42.33007 -41.62411 -40.63080 -39.36381 -38.35924 -36.66858 -36.28734 -33.87820 -33.09125 -32.53290 -32.22236 -32.11948 -31.79275 -31.02739 -28.39573 -27.96484 -27.55155 -26.14177 -24.51506 -23.99612 -23.83606 -22.85114 -21.81851 -20.46552 -20.42109 -19.57494 -18.51777 -18.38611 -17.86274 -17.42049 -17.18822 -16.98572 -16.62480 -16.34257 -16.03136 -15.94923 -15.67312 -15.50163 -15.45015 -15.39823 -15.03870 -14.92759 -14.77542 -14.72935 -14.58114 -14.49139 -13.92259 -13.83655 -13.68104 -13.60151 -13.45495 -13.42699 -13.33560 -12.99788 -12.96068 -12.85977 -12.65806 -12.48202 -12.43912 -12.33762 -11.99968 -11.84092 -11.62171 -11.52900 -11.42615 -10.92599 -10.89861 -10.71078 -10.65278 -10.48300 -10.19135 -9.82677 -9.70732 -9.52341 -6.61140 -2.76431 -0.71154 -0.47123 -0.31060 0.21678 1.33898 1.47496 1.50709 1.56004 1.65537 1.70269 1.87317 2.03706 2.19223 2.59816 2.89334 3.08499 3.24542 3.49805 3.52419 3.63033 3.67616 3.74248 3.76542 3.82478 3.91231 4.00012 4.04443 4.11631 4.16163 4.17762 4.22626 4.27137 4.30994 4.45707 4.53017 4.55820 4.58116 4.61435 4.64363 4.68906 4.70598 4.75512 4.82303 4.84409 4.89100 4.90522 4.93306 4.94563 4.97994 5.09193 5.14032 5.19906 5.22082 5.27736 5.33099 5.41444 5.61265 5.80001 6.00220 6.16956 6.63183 6.71251 7.06091 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.066 3.934 2 N -0.583 5.583 3 C 0.512 3.488 4 O -0.568 6.568 5 C -0.131 4.131 6 C -0.339 4.339 7 Si 1.017 2.983 8 H -0.270 1.270 9 H -0.292 1.292 10 H -0.263 1.263 11 C 0.167 3.833 12 C -0.134 4.134 13 C -0.057 4.057 14 C -0.155 4.155 15 C 0.560 3.440 16 O -0.554 6.554 17 N -0.645 5.645 18 C 0.184 3.816 19 C -0.095 4.095 20 C -0.027 4.027 21 C -0.087 4.087 22 C -0.095 4.095 23 C 0.067 3.933 24 C -0.117 4.117 25 C -0.153 4.153 26 O -0.441 6.441 27 O -0.802 6.802 28 C 0.260 3.740 29 C -0.149 4.149 30 C -0.054 4.054 31 C -0.124 4.124 32 H 0.073 0.927 33 H 0.110 0.890 34 H 0.084 0.916 35 H 0.131 0.869 36 H 0.123 0.877 37 H 0.077 0.923 38 H 0.083 0.917 39 H 0.142 0.858 40 H 0.128 0.872 41 H 0.442 0.558 42 H 0.218 0.782 43 H 0.235 0.765 44 H 0.107 0.893 45 H 0.152 0.848 46 H 0.117 0.883 47 H 0.051 0.949 48 H 0.069 0.931 49 H 0.039 0.961 50 H 0.040 0.960 51 H 0.107 0.893 52 H 0.312 0.688 53 H 0.142 0.858 54 H 0.173 0.827 55 H 0.145 0.855 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -7.398 3.609 -19.493 21.159 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 -0.074 4.074 2 N -0.313 5.313 3 C 0.304 3.696 4 O -0.445 6.445 5 C -0.170 4.170 6 C -0.431 4.431 7 Si 0.845 3.155 8 H -0.195 1.195 9 H -0.218 1.218 10 H -0.187 1.187 11 C 0.076 3.924 12 C -0.153 4.153 13 C -0.077 4.077 14 C -0.158 4.158 15 C 0.351 3.649 16 O -0.432 6.432 17 N -0.294 5.294 18 C 0.088 3.912 19 C -0.114 4.114 20 C -0.044 4.044 21 C -0.089 4.089 22 C -0.132 4.132 23 C 0.018 3.982 24 C -0.174 4.174 25 C -0.210 4.210 26 O -0.386 6.386 27 O -0.628 6.628 28 C 0.250 3.750 29 C -0.169 4.169 30 C -0.072 4.072 31 C -0.143 4.143 32 H 0.092 0.908 33 H 0.128 0.872 34 H 0.102 0.898 35 H 0.149 0.851 36 H 0.141 0.859 37 H 0.096 0.904 38 H 0.102 0.898 39 H 0.160 0.840 40 H 0.146 0.854 41 H 0.286 0.714 42 H 0.235 0.765 43 H 0.251 0.749 44 H 0.125 0.875 45 H 0.170 0.830 46 H 0.136 0.864 47 H 0.070 0.930 48 H 0.088 0.912 49 H 0.058 0.942 50 H 0.059 0.941 51 H 0.126 0.874 52 H 0.143 0.857 53 H 0.159 0.841 54 H 0.190 0.810 55 H 0.163 0.837 Dipole moment (debyes) X Y Z Total from point charges -7.773 4.454 -19.179 21.168 hybrid contribution 1.121 -0.639 2.831 3.111 sum -6.652 3.815 -16.349 18.058 Atomic orbital electron populations 1.22290 0.75219 1.05854 1.04055 1.45659 1.08864 1.03130 1.73636 1.21650 0.87762 0.86009 0.74197 1.90735 1.16459 1.87693 1.49650 1.21626 0.99210 0.88836 1.07345 1.25103 1.04510 1.07124 1.06352 0.84316 0.77300 0.74377 0.79507 1.19454 1.21769 1.18704 1.18053 0.94260 0.86683 0.93423 1.21297 1.01458 0.94469 0.98106 1.21193 0.93330 0.95771 0.97383 1.19653 1.03124 0.95034 0.97971 1.18752 0.78157 0.86175 0.81785 1.90914 1.63787 1.53692 1.34808 1.43195 1.47510 1.16061 1.22661 1.17437 0.95052 0.88217 0.90453 1.22052 0.98094 0.93864 0.97423 1.21710 0.93653 0.94139 0.94913 1.20979 1.01771 1.00020 0.86096 1.21572 0.99071 0.91378 1.01131 1.22197 0.93095 0.94615 0.88260 1.22332 1.01042 0.89577 1.04434 1.22525 0.97875 0.97221 1.03410 1.95149 1.75763 1.33728 1.34001 1.93503 1.86598 1.46909 1.35806 1.29256 0.99780 0.89636 0.56332 1.21387 0.99335 0.94354 1.01872 1.21449 0.96647 0.92136 0.97015 1.21381 0.97779 0.97031 0.98115 0.90834 0.87205 0.89768 0.85093 0.85855 0.90398 0.89775 0.83979 0.85389 0.71355 0.76493 0.74877 0.87488 0.82981 0.86428 0.92987 0.91220 0.94191 0.94116 0.87429 0.85664 0.84109 0.80954 0.83737 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 88. 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 0.07 -0.76 10.14 127.77 1.30 0.54 16 2 N -0.58 2.00 2.91 -654.54 -1.90 0.09 16 3 C 0.51 0.06 7.51 87.66 0.66 0.71 16 4 O -0.57 -5.52 15.70 -3.03 -0.05 -5.56 16 5 C -0.13 0.98 3.53 29.85 0.11 1.09 16 6 C -0.34 1.37 3.74 71.98 0.27 1.64 16 7 Si 1.02 -4.58 29.30 68.60 2.01 -2.57 16 8 H -0.27 0.83 7.11 99.48 0.71 1.53 16 9 H -0.29 -0.25 7.11 99.48 0.71 0.45 16 10 H -0.26 1.11 7.11 99.48 0.71 1.81 16 11 C 0.17 -0.04 4.75 38.36 0.18 0.14 16 12 C -0.13 -0.13 9.81 22.35 0.22 0.09 16 13 C -0.06 -0.21 9.58 22.50 0.22 0.01 16 14 C -0.15 -0.14 5.88 -20.08 -0.12 -0.26 16 15 C 0.56 2.28 7.60 86.71 0.66 2.94 16 16 O -0.55 -8.47 13.84 -4.04 -0.06 -8.52 16 17 N -0.64 3.37 5.28 -306.25 -1.62 1.76 16 18 C 0.18 -0.53 6.29 38.19 0.24 -0.29 16 19 C -0.10 1.35 9.95 22.45 0.22 1.58 16 20 C -0.03 0.39 9.72 22.24 0.22 0.61 16 21 C -0.09 0.23 5.24 -19.66 -0.10 0.13 16 22 C -0.10 0.43 4.67 29.64 0.14 0.57 16 23 C 0.07 0.42 1.09 -10.93 -0.01 0.41 16 24 C -0.12 -0.09 8.81 71.98 0.63 0.54 16 25 C -0.15 -0.86 8.56 71.98 0.62 -0.25 16 26 O -0.44 -9.71 13.61 -127.95 -1.74 -11.45 16 27 O -0.80 -29.43 17.84 -127.95 -2.28 -31.71 16 28 C 0.26 2.83 8.12 22.70 0.18 3.01 16 29 C -0.15 -1.47 8.50 22.54 0.19 -1.28 16 30 C -0.05 0.30 9.53 22.50 0.21 0.51 16 31 C -0.12 0.35 9.45 22.35 0.21 0.56 16 32 H 0.07 -0.92 8.14 -2.39 -0.02 -0.94 16 33 H 0.11 -1.81 6.45 -2.39 -0.02 -1.83 16 34 H 0.08 -1.02 8.05 -2.38 -0.02 -1.04 16 35 H 0.13 -1.77 7.41 -2.39 -0.02 -1.79 16 36 H 0.12 -1.49 7.87 -2.39 -0.02 -1.51 16 37 H 0.08 -0.09 7.92 -2.39 -0.02 -0.11 16 38 H 0.08 -0.22 7.92 -2.39 -0.02 -0.24 16 39 H 0.14 -0.21 8.06 -2.91 -0.02 -0.24 16 40 H 0.13 0.78 7.64 -2.91 -0.02 0.76 16 41 H 0.44 -6.65 6.86 -92.71 -0.64 -7.29 16 42 H 0.22 -5.40 8.06 -2.91 -0.02 -5.42 16 43 H 0.24 -6.00 8.06 -2.91 -0.02 -6.03 16 44 H 0.11 -0.59 8.14 -2.39 -0.02 -0.61 16 45 H 0.15 -2.29 8.12 -2.39 -0.02 -2.31 16 46 H 0.12 -0.90 8.14 -2.39 -0.02 -0.92 16 47 H 0.05 0.25 8.14 -2.39 -0.02 0.23 16 48 H 0.07 0.05 8.14 -2.38 -0.02 0.03 16 49 H 0.04 0.38 6.39 -2.39 -0.02 0.36 16 50 H 0.04 0.43 8.14 -2.39 -0.02 0.41 16 51 H 0.11 -0.40 8.14 -2.39 -0.02 -0.42 16 52 H 0.31 10.78 9.26 -74.06 -0.69 10.09 16 53 H 0.14 2.84 6.26 -2.91 -0.02 2.83 16 54 H 0.17 -2.59 6.40 -2.91 -0.02 -2.61 16 55 H 0.14 -0.76 8.06 -2.91 -0.02 -0.78 16 Total: 0.00 -61.51 458.03 0.97 -60.54 By element: Atomic # 1 Polarization: -15.92 SS G_CDS: 0.37 Total: -15.55 kcal Atomic # 6 Polarization: 6.74 SS G_CDS: 6.24 Total: 12.98 kcal Atomic # 7 Polarization: 5.37 SS G_CDS: -3.52 Total: 1.85 kcal Atomic # 8 Polarization: -53.12 SS G_CDS: -4.13 Total: -57.25 kcal Atomic # 14 Polarization: -4.58 SS G_CDS: 2.01 Total: -2.57 kcal Total: -61.51 0.97 -60.54 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. m_22_12359984_15608440.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 166.085 kcal (2) G-P(sol) polarization free energy of solvation -61.515 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system 104.571 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy 0.970 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -60.544 kcal (6) G-S(sol) free energy of system = (1) + (5) 105.541 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 11.79 seconds