Wall clock time and date at job start Wed Apr 1 2020 02:53:12 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 N 2 2 C 1.31620 * 1 3 3 Si 1.86800 * 119.99789 * 2 1 4 4 H 1.48499 * 109.46546 * 239.99890 * 3 2 1 5 5 H 1.48494 * 109.47286 * 359.97438 * 3 2 1 6 6 H 1.48494 * 109.47168 * 120.00023 * 3 2 1 7 7 C 1.38808 * 119.99939 * 179.97438 * 2 1 3 8 8 H 1.08001 * 120.00158 * 190.90466 * 7 2 1 9 9 N 1.36937 * 120.00033 * 10.90407 * 7 2 1 10 10 C 1.47145 * 120.98295 * 31.00785 * 9 7 2 11 11 C 1.53300 * 108.38789 * 129.48684 * 10 9 7 12 12 O 1.42960 * 109.22087 * 52.29988 * 11 10 9 13 13 C 1.42960 * 114.16759 * 297.42090 * 12 11 10 14 14 C 1.47158 * 120.98109 * 211.02764 * 9 7 2 15 15 H 1.09000 * 109.71092 * 110.77379 * 14 9 7 16 16 C 1.52996 * 109.68251 * 350.23714 * 14 9 7 17 17 N 1.46509 * 109.47043 * 61.33255 * 16 14 9 18 18 C 1.34776 * 119.99969 * 179.97438 * 17 16 14 19 19 O 1.21285 * 119.99612 * 359.97438 * 18 17 16 20 20 C 1.50694 * 119.99900 * 180.02562 * 18 17 16 21 21 H 1.09001 * 109.47227 * 15.00288 * 20 18 17 22 22 F 1.39903 * 109.47025 * 254.99879 * 20 18 17 23 23 C 1.53001 * 109.47165 * 135.00149 * 20 18 17 24 24 C 1.52999 * 109.47165 * 184.99984 * 23 20 18 25 25 C 1.53002 * 109.46927 * 184.99807 * 24 23 20 26 26 C 1.52999 * 109.46927 * 179.97438 * 25 24 23 27 27 C 1.53003 * 109.47242 * 59.99894 * 26 25 24 28 28 C 1.53002 * 109.47246 * 299.99910 * 27 26 25 29 29 C 1.52999 * 109.46927 * 59.99896 * 28 27 26 30 30 H 0.97004 * 120.00173 * 0.02562 * 1 2 3 31 31 H 1.08996 * 109.68381 * 9.76063 * 10 9 7 32 32 H 1.09002 * 109.68179 * 249.20846 * 10 9 7 33 33 H 1.09003 * 109.51057 * 292.37784 * 11 10 9 34 34 H 1.08999 * 109.51139 * 172.23016 * 11 10 9 35 35 H 1.09000 * 109.51316 * 302.66051 * 13 12 11 36 36 H 1.09006 * 109.55480 * 182.53243 * 13 12 11 37 37 H 1.08993 * 109.47058 * 301.33488 * 16 14 9 38 38 H 1.09002 * 109.47044 * 181.32786 * 16 14 9 39 39 H 0.97002 * 119.99529 * 359.97438 * 17 16 14 40 40 H 1.08998 * 109.47068 * 64.99815 * 23 20 18 41 41 H 1.09002 * 109.46629 * 304.99637 * 23 20 18 42 42 H 1.08993 * 109.47295 * 304.99783 * 24 23 20 43 43 H 1.09001 * 109.47304 * 60.00121 * 25 24 23 44 44 H 1.09000 * 109.46957 * 299.99435 * 25 24 23 45 45 H 1.09004 * 109.47344 * 180.02562 * 26 25 24 46 46 H 1.09003 * 109.47269 * 299.99807 * 26 25 24 47 47 H 1.09005 * 109.46854 * 60.00284 * 27 26 25 48 48 H 1.09005 * 109.47285 * 179.97438 * 27 26 25 49 49 H 1.08993 * 109.47114 * 299.99809 * 28 27 26 50 50 H 1.08998 * 109.46808 * 179.97438 * 28 27 26 51 51 H 1.08994 * 109.47263 * 179.97438 * 29 28 27 52 52 H 1.09005 * 109.46964 * 59.99755 * 29 28 27 Note: An asterisk (*) indicates this parameter was or will be optimized. Cartesian coordinates (angstroms) NO. Atom X Y Z 1 7 0.0000 0.0000 0.0000 2 6 1.3162 0.0000 0.0000 3 14 2.2501 1.6178 0.0000 4 1 3.1039 1.6963 -1.2125 5 1 1.2852 2.7464 -0.0006 6 1 3.1039 1.6965 1.2124 7 6 2.0102 -1.2021 0.0005 8 1 3.0756 -1.2105 0.1775 9 7 1.3441 -2.3774 -0.2233 10 6 0.1541 -2.4209 -1.0877 11 6 0.3414 -3.5461 -2.1120 12 8 0.6728 -4.7561 -1.4266 13 6 1.9041 -4.7002 -0.7024 14 6 1.7969 -3.6342 0.3940 15 1 1.0771 -3.9538 1.1476 16 6 3.1656 -3.4248 1.0448 17 7 3.0565 -2.4099 2.0958 18 6 4.1445 -2.0599 2.8101 19 8 5.2138 -2.5855 2.5831 20 6 4.0322 -1.0164 3.8915 21 1 2.9817 -0.8557 4.1336 22 9 4.5961 0.1827 3.4427 23 6 4.7761 -1.4939 5.1402 24 6 4.5583 -0.4938 6.2774 25 6 5.4012 -0.9046 7.4864 26 6 5.1838 0.0959 8.6233 27 6 3.7045 0.1104 9.0140 28 6 2.8616 0.5213 7.8050 29 6 3.0790 -0.4793 6.6681 30 1 -0.4850 0.8401 -0.0004 31 1 0.0414 -1.4684 -1.6054 32 1 -0.7315 -2.6181 -0.4836 33 1 1.1470 -3.2837 -2.7978 34 1 -0.5832 -3.6862 -2.6719 35 1 2.7154 -4.4420 -1.3830 36 1 2.1047 -5.6706 -0.2483 37 1 3.8791 -3.0920 0.2911 38 1 3.5082 -4.3634 1.4803 39 1 2.2012 -1.9899 2.2774 40 1 5.8414 -1.5695 4.9219 41 1 4.3960 -2.4711 5.4381 42 1 4.8564 0.5015 5.9480 43 1 6.4550 -0.9145 7.2081 44 1 5.1029 -1.8999 7.8158 45 1 5.7846 -0.1965 9.4845 46 1 5.4822 1.0911 8.2936 47 1 3.4061 -0.8847 9.3438 48 1 3.5497 0.8229 9.8243 49 1 3.1601 1.5164 7.4753 50 1 1.8078 0.5311 8.0834 51 1 2.4782 -0.1869 5.8070 52 1 2.7806 -1.4744 6.9979 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) 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 ZINC001717139708.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 02:53:12 Heat of formation + Delta-G solvation = -134.494312 kcal Electronic energy + Delta-G solvation = -31979.015711 eV Core-core repulsion = 27699.449558 eV Total energy + Delta-G solvation = -4279.566153 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 342.211 amu Computer time = 0.90 seconds Orbital eigenvalues (eV) -47.54805 -39.41485 -38.80932 -38.26265 -35.41162 -33.66358 -33.56715 -31.66602 -30.91817 -30.51423 -29.07885 -27.25198 -25.87981 -24.03540 -23.47908 -22.73823 -21.77837 -20.99169 -20.04262 -19.84307 -19.61710 -17.54187 -16.68591 -16.38842 -15.91154 -15.71371 -15.47385 -15.32425 -14.83074 -14.61437 -14.36202 -14.29724 -14.19451 -14.03211 -13.88451 -13.69012 -13.49900 -13.06091 -12.77165 -12.67410 -12.41433 -12.31220 -12.06783 -11.90983 -11.61241 -11.59979 -11.26551 -11.06751 -11.04401 -10.98961 -10.86731 -10.79528 -10.57127 -10.45712 -10.27356 -10.20139 -10.08051 -10.02130 -9.70265 -9.40988 -8.99861 -8.71736 -8.40181 -6.77375 -5.93877 -3.44362 2.85824 3.33348 3.37104 3.42751 3.47084 4.33549 4.44452 4.48050 4.50690 4.58191 4.76201 4.91996 4.93294 4.95991 5.10748 5.16570 5.24248 5.28800 5.32914 5.38193 5.38531 5.41403 5.52499 5.53504 5.67791 5.77533 5.80325 5.86071 5.87583 5.94278 5.96967 5.99419 6.01523 6.07310 6.09825 6.11826 6.13477 6.17315 6.26776 6.29635 6.38460 6.47858 6.68815 6.93565 7.03432 7.45315 7.67155 7.82778 7.99859 8.25341 8.58567 9.02331 9.62656 10.21227 11.12181 Molecular weight = 342.21amu Principal moments of inertia in cm(-1) A = 0.013171 B = 0.003250 C = 0.002936 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2125.396507 B = 8613.067002 C = 9533.634320 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 N -0.899 5.899 2 C 0.013 3.987 3 Si 0.891 3.109 4 H -0.283 1.283 5 H -0.289 1.289 6 H -0.272 1.272 7 C -0.261 4.261 8 H 0.072 0.928 9 N -0.591 5.591 10 C 0.144 3.856 11 C 0.034 3.966 12 O -0.392 6.392 13 C 0.056 3.944 14 C 0.125 3.875 15 H 0.042 0.958 16 C 0.133 3.867 17 N -0.683 5.683 18 C 0.487 3.513 19 O -0.546 6.546 20 C 0.083 3.917 21 H 0.098 0.902 22 F -0.190 7.190 23 C -0.128 4.128 24 C -0.089 4.089 25 C -0.112 4.112 26 C -0.119 4.119 27 C -0.119 4.119 28 C -0.119 4.119 29 C -0.121 4.121 30 H 0.256 0.744 31 H 0.093 0.907 32 H 0.029 0.971 33 H 0.041 0.959 34 H 0.080 0.920 35 H 0.047 0.953 36 H 0.083 0.917 37 H 0.069 0.931 38 H 0.061 0.939 39 H 0.417 0.583 40 H 0.086 0.914 41 H 0.082 0.918 42 H 0.078 0.922 43 H 0.062 0.938 44 H 0.062 0.938 45 H 0.059 0.941 46 H 0.061 0.939 47 H 0.060 0.940 48 H 0.058 0.942 49 H 0.062 0.938 50 H 0.061 0.939 51 H 0.066 0.934 52 H 0.064 0.936 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 4.451 -3.013 12.800 13.882 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 N -0.542 5.542 2 C -0.187 4.187 3 Si 0.720 3.280 4 H -0.209 1.209 5 H -0.215 1.215 6 H -0.198 1.198 7 C -0.390 4.390 8 H 0.090 0.910 9 N -0.317 5.317 10 C 0.019 3.981 11 C -0.043 4.043 12 O -0.311 6.311 13 C -0.023 4.023 14 C 0.018 3.982 15 H 0.059 0.941 16 C 0.009 3.991 17 N -0.335 5.335 18 C 0.270 3.730 19 O -0.425 6.425 20 C 0.043 3.957 21 H 0.116 0.884 22 F -0.170 7.170 23 C -0.167 4.167 24 C -0.107 4.107 25 C -0.149 4.149 26 C -0.157 4.157 27 C -0.157 4.157 28 C -0.157 4.157 29 C -0.159 4.159 30 H 0.066 0.934 31 H 0.111 0.889 32 H 0.047 0.953 33 H 0.059 0.941 34 H 0.098 0.902 35 H 0.065 0.935 36 H 0.101 0.899 37 H 0.087 0.913 38 H 0.079 0.921 39 H 0.255 0.745 40 H 0.104 0.896 41 H 0.100 0.900 42 H 0.096 0.904 43 H 0.081 0.919 44 H 0.081 0.919 45 H 0.078 0.922 46 H 0.080 0.920 47 H 0.079 0.921 48 H 0.077 0.923 49 H 0.081 0.919 50 H 0.080 0.920 51 H 0.085 0.915 52 H 0.083 0.917 Dipole moment (debyes) X Y Z Total from point charges 4.962 -3.366 12.611 13.964 hybrid contribution 0.092 1.550 -0.142 1.559 sum 5.054 -1.816 12.470 13.577 Atomic orbital electron populations 1.69973 1.05202 1.25889 1.53176 1.25117 0.95279 0.98233 1.00021 0.86523 0.79165 0.83308 0.79008 1.20916 1.21512 1.19783 1.19174 0.91322 0.83326 1.45178 0.91017 1.44083 1.32035 1.02813 1.52771 1.21417 0.88829 0.96871 0.91009 1.23361 0.99157 0.86492 0.95330 1.87800 1.40235 1.36037 1.66999 1.22859 0.86744 0.98654 0.94059 1.21428 0.93521 0.89423 0.93832 0.94069 1.21233 0.97844 0.90245 0.89747 1.46091 1.12250 1.40734 1.34388 1.20809 0.84750 0.84024 0.83438 1.90661 1.27770 1.55137 1.68918 1.21599 0.99597 0.81082 0.93387 0.88399 1.92881 1.87136 1.46285 1.90748 1.22070 1.02343 0.99736 0.92502 1.21177 0.95672 0.99643 0.94255 1.21547 0.99635 0.99055 0.94690 1.21532 0.96357 0.99747 0.98059 1.21541 0.95200 1.01347 0.97587 1.21519 0.99602 0.99277 0.95298 1.21704 0.95867 0.99799 0.98505 0.93354 0.88932 0.95253 0.94104 0.90208 0.93487 0.89894 0.91257 0.92066 0.74505 0.89575 0.89967 0.90410 0.91880 0.91898 0.92213 0.92007 0.92098 0.92334 0.91937 0.91997 0.91536 0.91718 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 15. 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 N -0.90 -23.91 11.13 55.49 0.62 -23.29 16 2 C 0.01 0.34 5.06 -17.43 -0.09 0.26 16 3 Si 0.89 20.98 29.57 -169.99 -5.03 15.96 16 4 H -0.28 -6.79 7.11 56.52 0.40 -6.39 16 5 H -0.29 -6.86 7.11 56.52 0.40 -6.46 16 6 H -0.27 -6.47 7.11 56.52 0.40 -6.07 16 7 C -0.26 -6.41 7.11 -15.06 -0.11 -6.52 16 8 H 0.07 1.82 5.81 -52.49 -0.30 1.51 16 9 N -0.59 -13.39 3.03 -164.30 -0.50 -13.89 16 10 C 0.14 3.23 5.38 -3.53 -0.02 3.21 16 11 C 0.03 0.66 6.99 37.31 0.26 0.92 16 12 O -0.39 -7.50 10.74 -35.23 -0.38 -7.88 16 13 C 0.06 0.97 6.29 37.31 0.23 1.20 16 14 C 0.13 2.38 3.20 -67.42 -0.22 2.16 16 15 H 0.04 0.81 8.14 -51.93 -0.42 0.39 16 16 C 0.13 2.41 4.44 -4.04 -0.02 2.39 16 17 N -0.68 -12.53 3.80 -60.29 -0.23 -12.76 16 18 C 0.49 8.92 7.17 -10.99 -0.08 8.84 16 19 O -0.55 -11.39 16.61 5.55 0.09 -11.30 16 20 C 0.08 1.29 3.64 -27.89 -0.10 1.19 16 21 H 0.10 1.36 6.20 -51.93 -0.32 1.04 16 22 F -0.19 -3.53 16.66 2.25 0.04 -3.49 16 23 C -0.13 -1.62 4.16 -26.73 -0.11 -1.73 16 24 C -0.09 -0.97 2.15 -90.62 -0.19 -1.16 16 25 C -0.11 -1.04 5.20 -26.73 -0.14 -1.17 16 26 C -0.12 -1.00 5.92 -26.73 -0.16 -1.16 16 27 C -0.12 -0.98 5.92 -26.73 -0.16 -1.14 16 28 C -0.12 -1.10 5.92 -26.73 -0.16 -1.26 16 29 C -0.12 -1.24 4.97 -26.73 -0.13 -1.37 16 30 H 0.26 6.73 8.31 -40.82 -0.34 6.39 16 31 H 0.09 2.29 6.32 -51.93 -0.33 1.96 16 32 H 0.03 0.70 8.14 -51.93 -0.42 0.28 16 33 H 0.04 0.77 8.14 -51.93 -0.42 0.35 16 34 H 0.08 1.34 8.14 -51.93 -0.42 0.91 16 35 H 0.05 0.82 8.14 -51.93 -0.42 0.39 16 36 H 0.08 1.20 8.14 -51.93 -0.42 0.78 16 37 H 0.07 1.38 7.53 -51.93 -0.39 0.99 16 38 H 0.06 0.98 8.14 -51.93 -0.42 0.56 16 39 H 0.42 7.89 7.27 -40.82 -0.30 7.59 16 40 H 0.09 1.18 8.05 -51.93 -0.42 0.76 16 41 H 0.08 0.94 8.14 -51.93 -0.42 0.52 16 42 H 0.08 0.94 7.81 -51.93 -0.41 0.53 16 43 H 0.06 0.58 8.14 -51.93 -0.42 0.16 16 44 H 0.06 0.56 8.14 -51.93 -0.42 0.13 16 45 H 0.06 0.44 8.14 -51.93 -0.42 0.02 16 46 H 0.06 0.53 8.14 -51.93 -0.42 0.11 16 47 H 0.06 0.49 8.14 -51.93 -0.42 0.06 16 48 H 0.06 0.44 8.14 -51.93 -0.42 0.01 16 49 H 0.06 0.60 8.14 -51.93 -0.42 0.18 16 50 H 0.06 0.54 8.14 -51.93 -0.42 0.12 16 51 H 0.07 0.73 6.46 -51.93 -0.34 0.40 16 52 H 0.06 0.62 8.14 -51.93 -0.42 0.19 16 LS Contribution 398.55 15.07 6.01 6.01 Total: -1.00 -28.87 398.55 -9.69 -38.56 By element: Atomic # 1 Polarization: 16.56 SS G_CDS: -9.12 Total: 7.43 kcal Atomic # 6 Polarization: 5.84 SS G_CDS: -1.19 Total: 4.65 kcal Atomic # 7 Polarization: -49.83 SS G_CDS: -0.11 Total: -49.94 kcal Atomic # 8 Polarization: -18.90 SS G_CDS: -0.29 Total: -19.18 kcal Atomic # 9 Polarization: -3.53 SS G_CDS: 0.04 Total: -3.49 kcal Atomic # 14 Polarization: 20.98 SS G_CDS: -5.03 Total: 15.96 kcal Total LS contribution 6.01 Total: 6.01 kcal Total: -28.87 -9.69 -38.56 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. ZINC001717139708.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 -95.934 kcal (2) G-P(sol) polarization free energy of solvation -28.872 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -124.806 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.688 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -38.561 kcal (6) G-S(sol) free energy of system = (1) + (5) -134.494 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.90 seconds