Wall clock time and date at job start Mon Mar 8 2021 16:56:18 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 O 1.42900 * 1 3 3 C 1.35986 * 117.00035 * 2 1 4 4 C 1.38677 * 120.00060 * 180.02562 * 3 2 1 5 5 C 1.50696 * 119.99996 * 0.02562 * 4 3 2 6 6 C 1.38149 * 119.99714 * 179.97438 * 4 3 2 7 7 C 1.38667 * 120.00318 * 359.97438 * 6 4 3 8 8 O 1.35987 * 120.00162 * 180.02562 * 7 6 4 9 9 C 1.42900 * 116.99845 * 359.97438 * 8 7 6 10 10 C 1.53000 * 109.46928 * 180.02562 * 9 8 7 11 11 H 1.09002 * 112.85291 * 316.19725 * 10 9 8 12 12 C 1.53786 * 113.61460 * 87.50545 * 10 9 8 13 13 C 1.53782 * 87.07991 * 139.97911 * 12 10 9 14 14 H 1.09002 * 113.68548 * 220.00340 * 13 12 10 15 15 N 1.46505 * 113.61081 * 89.11677 * 13 12 10 16 16 C 1.34777 * 119.99722 * 107.50446 * 15 13 12 17 17 O 1.21513 * 120.00316 * 359.97438 * 16 15 13 18 18 O 1.34638 * 119.99672 * 179.72257 * 16 15 13 19 19 C 1.45202 * 116.99776 * 180.27362 * 18 16 15 20 20 C 1.53000 * 109.46964 * 60.00058 * 19 18 16 21 21 C 1.53008 * 109.46858 * 179.97438 * 19 18 16 22 22 C 1.52988 * 109.47138 * 299.99572 * 19 18 16 23 23 C 1.53776 * 87.08305 * 334.56542 * 13 12 10 24 24 C 1.38723 * 120.00014 * 0.27674 * 7 6 4 25 25 C 1.50698 * 119.99959 * 179.70744 * 24 7 6 26 26 O 1.42901 * 109.47055 * 284.99772 * 25 24 7 27 27 Si 1.86301 * 109.47236 * 165.00022 * 25 24 7 28 28 C 1.38105 * 119.99780 * 359.44560 * 24 7 6 29 29 H 1.08999 * 109.47371 * 179.97438 * 1 2 3 30 30 H 1.08995 * 109.46988 * 299.99912 * 1 2 3 31 31 H 1.09006 * 109.47380 * 60.00040 * 1 2 3 32 32 H 1.09003 * 109.47001 * 269.98342 * 5 4 3 33 33 H 1.09003 * 109.47662 * 29.97482 * 5 4 3 34 34 H 1.08991 * 109.47518 * 149.97642 * 5 4 3 35 35 H 1.08001 * 119.99480 * 180.02562 * 6 4 3 36 36 H 1.08992 * 109.46860 * 60.00550 * 9 8 7 37 37 H 1.09000 * 109.46934 * 300.00006 * 9 8 7 38 38 H 1.09001 * 113.61468 * 25.43069 * 12 10 9 39 39 H 1.09001 * 113.60973 * 254.53016 * 12 10 9 40 40 H 0.97000 * 119.99795 * 287.49562 * 15 13 12 41 41 H 1.08997 * 109.47363 * 60.00315 * 20 19 18 42 42 H 1.09005 * 109.46795 * 180.02562 * 20 19 18 43 43 H 1.09001 * 109.46811 * 299.99419 * 20 19 18 44 44 H 1.08996 * 109.46984 * 60.00080 * 21 19 18 45 45 H 1.08996 * 109.46584 * 179.97438 * 21 19 18 46 46 H 1.08998 * 109.47272 * 300.00133 * 21 19 18 47 47 H 1.09001 * 109.47346 * 60.00146 * 22 19 18 48 48 H 1.09005 * 109.47300 * 180.02562 * 22 19 18 49 49 H 1.09004 * 109.47621 * 300.00303 * 22 19 18 50 50 H 1.09002 * 113.61634 * 139.98020 * 23 13 12 51 51 H 1.09003 * 113.61635 * 270.88547 * 23 13 12 52 52 H 1.08997 * 109.47596 * 44.99707 * 25 24 7 53 53 H 0.96703 * 114.00332 * 300.00153 * 26 25 24 54 54 H 1.48496 * 110.00201 * 179.97438 * 27 25 24 55 55 H 1.48500 * 109.99887 * 301.31979 * 27 25 24 56 56 H 1.07997 * 120.00216 * 180.27622 * 28 24 7 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 2.0464 1.2116 0.0000 4 6 3.4312 1.2842 -0.0005 5 6 4.2520 0.0204 -0.0017 6 6 4.0583 2.5152 -0.0011 7 6 3.3031 3.6781 -0.0016 8 8 3.9204 4.8898 -0.0027 9 6 5.3494 4.8898 -0.0026 10 6 5.8594 6.3323 -0.0032 11 1 5.3170 6.9728 -0.6988 12 6 6.0068 6.9342 1.4043 13 6 7.3081 7.5837 0.9046 14 1 8.1151 7.5671 1.6372 15 7 7.1114 8.9057 0.3046 16 6 7.5118 10.0111 0.9636 17 8 8.0356 9.9113 2.0555 18 8 7.3361 11.2256 0.4098 19 6 7.7969 12.3713 1.1736 20 6 9.3014 12.2467 1.4224 21 6 7.5147 13.6542 0.3890 22 6 7.0607 12.4203 2.5138 23 6 7.3882 6.4452 -0.1260 24 6 1.9178 3.6055 0.0042 25 6 1.0971 4.8694 0.0103 26 8 1.1357 5.4562 1.3127 27 14 -0.6660 4.4672 -0.4376 28 6 1.2908 2.3750 -0.0011 29 1 -0.3634 -1.0276 -0.0005 30 1 -0.3633 0.5138 0.8900 31 1 -0.3634 0.5138 -0.8900 32 1 4.4505 -0.2848 1.0257 33 1 3.7031 -0.7689 -0.5154 34 1 5.1958 0.2005 -0.5161 35 1 5.1369 2.5717 -0.0019 36 1 5.7127 4.3753 -0.8921 37 1 5.7127 4.3768 0.8879 38 1 6.1624 6.1885 2.1839 39 1 5.2277 7.6541 1.6550 40 1 6.6931 8.9854 -0.5669 41 1 9.8259 12.2119 0.4675 42 1 9.6472 13.1065 1.9961 43 1 9.5027 11.3327 1.9812 44 1 6.4430 13.7432 0.2114 45 1 7.8603 14.5142 0.9626 46 1 8.0395 13.6191 -0.5657 47 1 7.2620 11.5063 3.0726 48 1 7.4063 13.2806 3.0870 49 1 5.9888 12.5091 2.3366 50 1 7.7243 6.7703 -1.1106 51 1 7.9214 5.5658 0.2353 52 1 1.5055 5.5714 -0.7167 53 1 0.7867 4.8860 2.0115 54 1 -1.4860 5.7052 -0.4345 55 1 -0.7165 3.8272 -1.7767 56 1 0.2123 2.3185 -0.0011 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=WATER s_7_16525064_15734082.mol2 56 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Mon Mar 8 2021 16:56:18 Heat of formation + Delta-G solvation = -134.446094 kcal Electronic energy + Delta-G solvation = -35747.618347 eV Core-core repulsion = 31011.398844 eV Total energy + Delta-G solvation = -4736.219503 eV No. of doubly occupied orbitals = 72 and no. of open levels = 1 Molecular weight (most abundant/longest-lived isotopes) = 380.212 amu Computer time = 1.48 seconds Orbital eigenvalues (eV) -42.02336 -41.72939 -40.63653 -39.74581 -38.24407 -37.81273 -37.12673 -35.40348 -34.23703 -33.93644 -30.67090 -29.57159 -29.03353 -28.40619 -28.34107 -28.12648 -26.75839 -25.26945 -24.74924 -23.56135 -22.60781 -22.20966 -21.20532 -20.28793 -19.38086 -19.13233 -18.56038 -17.97618 -17.63427 -17.33295 -17.26568 -17.02267 -16.70400 -16.46731 -16.19505 -15.94516 -15.72095 -15.57535 -15.45949 -15.21215 -14.99553 -14.59847 -14.46147 -14.39037 -14.20225 -14.01076 -13.90683 -13.70950 -13.43483 -13.38454 -13.18967 -12.96509 -12.92924 -12.90857 -12.78444 -12.66886 -12.58878 -12.56177 -12.37192 -12.32056 -12.19326 -11.95996 -11.70675 -11.60814 -11.44212 -11.41209 -11.16900 -11.08861 -10.41183 -10.23359 -9.92230 -8.68382 -5.11185 0.06609 0.40065 1.08649 1.24959 1.57438 1.67244 1.89995 2.18218 2.43179 2.54778 3.06365 3.37529 3.45983 3.48831 3.61279 3.70133 3.70754 3.73433 3.77472 3.83127 3.90410 3.94688 4.03550 4.23783 4.32033 4.38441 4.39433 4.44299 4.45245 4.47074 4.50512 4.56069 4.57415 4.58046 4.70449 4.72275 4.72578 4.77331 4.79155 4.80909 4.83722 4.83785 4.85346 4.89863 5.00047 5.01403 5.03955 5.06595 5.13640 5.23370 5.26285 5.28034 5.38737 5.43675 5.56416 5.58880 6.31938 6.33215 6.51326 6.76700 7.27561 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.009 3.991 2 O -0.328 6.328 3 C 0.083 3.917 4 C -0.082 4.082 5 C -0.106 4.106 6 C -0.175 4.175 7 C 0.109 3.891 8 O -0.321 6.321 9 C 0.063 3.937 10 C -0.104 4.104 11 H 0.095 0.905 12 C -0.144 4.144 13 C 0.131 3.869 14 H 0.098 0.902 15 N -0.685 5.685 16 C 0.646 3.354 17 O -0.592 6.592 18 O -0.370 6.370 19 C 0.127 3.873 20 C -0.179 4.179 21 C -0.138 4.138 22 C -0.180 4.180 23 C -0.116 4.116 24 C -0.134 4.134 25 C -0.063 4.063 26 O -0.551 6.551 27 Si 0.772 3.228 28 C -0.160 4.160 29 H 0.117 0.883 30 H 0.075 0.925 31 H 0.060 0.940 32 H 0.077 0.923 33 H 0.068 0.932 34 H 0.078 0.922 35 H 0.154 0.846 36 H 0.076 0.924 37 H 0.075 0.925 38 H 0.102 0.898 39 H 0.054 0.946 40 H 0.415 0.585 41 H 0.063 0.937 42 H 0.088 0.912 43 H 0.064 0.936 44 H 0.067 0.933 45 H 0.100 0.900 46 H 0.070 0.930 47 H 0.063 0.937 48 H 0.088 0.912 49 H 0.059 0.941 50 H 0.092 0.908 51 H 0.122 0.878 52 H 0.095 0.905 53 H 0.391 0.609 54 H -0.294 1.294 55 H -0.282 1.282 56 H 0.159 0.841 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -0.766 -3.730 -1.127 3.971 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 -0.085 4.085 2 O -0.242 6.242 3 C 0.038 3.962 4 C -0.083 4.083 5 C -0.163 4.163 6 C -0.193 4.193 7 C 0.063 3.937 8 O -0.235 6.235 9 C -0.011 4.011 10 C -0.122 4.122 11 H 0.113 0.887 12 C -0.183 4.183 13 C 0.026 3.974 14 H 0.116 0.884 15 N -0.344 5.344 16 C 0.400 3.600 17 O -0.482 6.482 18 O -0.285 6.285 19 C 0.090 3.910 20 C -0.236 4.236 21 C -0.195 4.195 22 C -0.238 4.238 23 C -0.154 4.154 24 C -0.136 4.136 25 C -0.172 4.172 26 O -0.359 6.359 27 Si 0.677 3.323 28 C -0.178 4.178 29 H 0.135 0.865 30 H 0.093 0.907 31 H 0.079 0.921 32 H 0.096 0.904 33 H 0.087 0.913 34 H 0.097 0.903 35 H 0.171 0.829 36 H 0.094 0.906 37 H 0.093 0.907 38 H 0.120 0.880 39 H 0.073 0.927 40 H 0.252 0.748 41 H 0.082 0.918 42 H 0.106 0.894 43 H 0.082 0.918 44 H 0.086 0.914 45 H 0.118 0.882 46 H 0.089 0.911 47 H 0.082 0.918 48 H 0.107 0.893 49 H 0.078 0.922 50 H 0.111 0.889 51 H 0.140 0.860 52 H 0.112 0.888 53 H 0.240 0.760 54 H -0.222 1.222 55 H -0.209 1.209 56 H 0.175 0.825 Dipole moment (debyes) X Y Z Total from point charges -0.875 -3.055 -1.473 3.503 hybrid contribution 0.228 0.424 -0.480 0.680 sum -0.647 -2.632 -1.953 3.341 Atomic orbital electron populations 1.23430 0.76715 1.05807 1.02540 1.86073 1.23083 1.25993 1.89063 1.18778 0.91990 0.84657 1.00760 1.19391 0.91072 0.96349 1.01480 1.20678 0.99043 0.93450 1.03114 1.21194 1.01019 0.90391 1.06736 1.18807 0.91727 0.84720 0.98405 1.86141 1.22292 1.26438 1.88597 1.23026 0.77572 0.98049 1.02493 1.22576 0.96791 0.94750 0.98109 0.88658 1.23536 0.97210 1.00153 0.97394 1.21861 0.98734 0.79641 0.97118 0.88376 1.44398 1.63900 1.03030 1.23092 1.18307 0.77454 0.81629 0.82642 1.90902 1.48793 1.86861 1.21678 1.86312 1.77681 1.14197 1.50322 1.22377 0.94544 0.82626 0.91420 1.22470 0.93912 1.04343 1.02917 1.21895 1.03325 0.93367 1.00880 1.22475 1.00438 1.04244 0.96598 1.23320 0.93967 0.97980 1.00117 1.19527 0.91717 0.95504 1.06808 1.25045 1.09600 0.93721 0.88857 1.86511 1.87481 1.45308 1.16565 0.94153 0.73869 0.81371 0.82926 1.21007 1.00230 0.90528 1.06008 0.86490 0.90687 0.92105 0.90397 0.91280 0.90263 0.82887 0.90577 0.90688 0.87982 0.92665 0.74782 0.91832 0.89362 0.91751 0.91358 0.88179 0.91086 0.91808 0.89298 0.92182 0.88898 0.86027 0.88766 0.75997 1.22165 1.20898 0.82459 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 0.01 -0.05 9.81 113.37 1.11 1.06 16 2 O -0.33 -0.65 9.54 -93.39 -0.89 -1.54 16 3 C 0.08 0.26 6.66 22.49 0.15 0.41 16 4 C -0.08 -0.22 5.89 -19.78 -0.12 -0.34 16 5 C -0.11 0.08 9.79 71.23 0.70 0.78 16 6 C -0.17 -0.34 8.69 22.35 0.19 -0.15 16 7 C 0.11 0.53 6.66 22.49 0.15 0.68 16 8 O -0.32 -1.64 9.46 -93.41 -0.88 -2.52 16 9 C 0.06 -0.12 4.58 71.98 0.33 0.21 16 10 C -0.10 0.29 3.89 -10.26 -0.04 0.25 16 11 H 0.10 -0.13 8.14 -2.39 -0.02 -0.15 16 12 C -0.14 -0.03 7.43 31.12 0.23 0.20 16 13 C 0.13 -0.04 4.32 45.52 0.20 0.16 16 14 H 0.10 0.26 7.46 -2.39 -0.02 0.24 16 15 N -0.69 -1.42 5.27 -567.59 -2.99 -4.41 16 16 C 0.65 5.35 8.06 129.79 1.05 6.39 16 17 O -0.59 -7.90 11.48 19.80 0.23 -7.67 16 18 O -0.37 -2.63 9.94 -55.47 -0.55 -3.18 16 19 C 0.13 0.53 1.13 -10.80 -0.01 0.52 16 20 C -0.18 -0.71 8.37 71.98 0.60 -0.11 16 21 C -0.14 0.13 8.85 71.98 0.64 0.77 16 22 C -0.18 -0.86 8.37 71.98 0.60 -0.26 16 23 C -0.12 0.72 7.39 31.12 0.23 0.95 16 24 C -0.13 -0.52 5.27 -19.78 -0.10 -0.62 16 25 C -0.06 -0.23 2.37 71.24 0.17 -0.06 16 26 O -0.55 -2.45 12.88 -148.98 -1.92 -4.37 16 27 Si 0.77 -0.12 29.91 68.60 2.05 1.93 16 28 C -0.16 -0.18 7.65 22.35 0.17 -0.01 16 29 H 0.12 -1.00 8.14 -2.39 -0.02 -1.02 16 30 H 0.07 -0.65 7.66 -2.39 -0.02 -0.67 16 31 H 0.06 -0.40 7.66 -2.38 -0.02 -0.41 16 32 H 0.08 -0.14 8.14 -2.39 -0.02 -0.16 16 33 H 0.07 0.04 7.53 -2.39 -0.02 0.02 16 34 H 0.08 -0.28 8.08 -2.39 -0.02 -0.30 16 35 H 0.15 -0.42 6.29 -2.91 -0.02 -0.43 16 36 H 0.08 -0.35 7.66 -2.39 -0.02 -0.37 16 37 H 0.07 -0.30 7.36 -2.39 -0.02 -0.31 16 38 H 0.10 -0.12 7.90 -2.39 -0.02 -0.14 16 39 H 0.05 0.27 8.14 -2.39 -0.02 0.25 16 40 H 0.42 -0.79 8.81 -92.71 -0.82 -1.60 16 41 H 0.06 0.20 8.14 -2.39 -0.02 0.18 16 42 H 0.09 0.03 8.14 -2.38 -0.02 0.01 16 43 H 0.06 0.59 5.88 -2.39 -0.01 0.58 16 44 H 0.07 -0.06 8.14 -2.39 -0.02 -0.07 16 45 H 0.10 -0.44 8.14 -2.39 -0.02 -0.46 16 46 H 0.07 -0.10 8.14 -2.39 -0.02 -0.12 16 47 H 0.06 0.65 5.88 -2.39 -0.01 0.63 16 48 H 0.09 0.09 8.14 -2.38 -0.02 0.07 16 49 H 0.06 0.27 8.14 -2.38 -0.02 0.25 16 50 H 0.09 -0.71 8.14 -2.39 -0.02 -0.73 16 51 H 0.12 -1.15 8.10 -2.39 -0.02 -1.17 16 52 H 0.09 0.66 7.82 -2.39 -0.02 0.64 16 53 H 0.39 -1.59 8.70 -74.05 -0.64 -2.24 16 54 H -0.29 -2.00 7.11 99.48 0.71 -1.30 16 55 H -0.28 -1.19 7.11 99.48 0.71 -0.48 16 56 H 0.16 -0.69 3.35 -2.91 -0.01 -0.70 16 Total: 0.00 -21.67 441.72 0.77 -20.90 By element: Atomic # 1 Polarization: -9.44 SS G_CDS: -0.52 Total: -9.96 kcal Atomic # 6 Polarization: 4.58 SS G_CDS: 6.25 Total: 10.82 kcal Atomic # 7 Polarization: -1.42 SS G_CDS: -2.99 Total: -4.41 kcal Atomic # 8 Polarization: -15.26 SS G_CDS: -4.02 Total: -19.28 kcal Atomic # 14 Polarization: -0.12 SS G_CDS: 2.05 Total: 1.93 kcal Total: -21.67 0.77 -20.90 kcal The number of atoms in the molecule is 56 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_7_16525064_15734082.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 -113.544 kcal (2) G-P(sol) polarization free energy of solvation -21.672 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -135.217 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy 0.771 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -20.902 kcal (6) G-S(sol) free energy of system = (1) + (5) -134.446 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.48 seconds