Wall clock time and date at job start Tue Mar 31 2020 18:04:20 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 N 1.46901 * 1 3 3 C 1.46895 * 111.00248 * 2 1 4 4 C 1.50703 * 109.46753 * 66.04584 * 3 2 1 5 5 H 1.07995 * 120.00408 * 0.02562 * 4 3 2 6 6 C 1.37880 * 119.99925 * 179.97438 * 4 3 2 7 7 N 1.31509 * 120.00043 * 179.97438 * 6 4 3 8 8 Si 1.86801 * 120.00012 * 0.02562 * 6 4 3 9 9 H 1.48500 * 109.47217 * 269.99702 * 8 6 4 10 10 H 1.48507 * 109.47024 * 29.99682 * 8 6 4 11 11 H 1.48499 * 109.47296 * 149.99415 * 8 6 4 12 12 C 1.46901 * 111.00048 * 236.04744 * 2 1 3 13 13 C 1.53001 * 109.47384 * 199.76858 * 12 2 1 14 14 H 1.09000 * 109.46760 * 302.15553 * 13 12 2 15 15 O 1.42895 * 109.47380 * 62.15613 * 13 12 2 16 16 C 1.53006 * 109.47183 * 182.16007 * 13 12 2 17 17 N 1.46900 * 109.47081 * 179.97438 * 16 13 12 18 18 C 1.46893 * 111.00075 * 179.97438 * 17 16 13 19 19 C 1.52999 * 109.47330 * 179.97438 * 18 17 16 20 20 H 1.08997 * 108.86890 * 56.39946 * 19 18 17 21 21 C 1.45547 * 108.89563 * 175.00063 * 19 18 17 22 22 C 1.54242 * 112.40318 * 182.69284 * 21 19 18 23 23 C 1.50474 * 108.51978 * 280.00354 * 22 21 19 24 24 C 1.54065 * 112.49490 * 94.15632 * 23 22 21 25 25 C 1.54065 * 112.81821 * 318.28747 * 24 23 22 26 26 F 1.39895 * 108.87852 * 79.05902 * 25 24 23 27 27 F 1.39900 * 108.87970 * 197.60336 * 25 24 23 28 28 C 1.50478 * 112.49711 * 318.27989 * 25 24 23 29 29 H 1.08998 * 109.47253 * 54.96442 * 1 2 3 30 30 H 1.09003 * 109.47101 * 174.96153 * 1 2 3 31 31 H 1.09001 * 109.47068 * 294.96135 * 1 2 3 32 32 H 1.08994 * 109.47236 * 306.04949 * 3 2 1 33 33 H 1.09000 * 109.47456 * 186.04834 * 3 2 1 34 34 H 0.97005 * 120.00577 * 180.02562 * 7 6 4 35 35 H 1.08999 * 109.47046 * 319.77012 * 12 2 1 36 36 H 1.08996 * 109.47151 * 79.76734 * 12 2 1 37 37 H 0.96704 * 113.99860 * 60.00048 * 15 13 12 38 38 H 1.09001 * 109.46597 * 299.99909 * 16 13 12 39 39 H 1.09002 * 109.46997 * 59.99653 * 16 13 12 40 40 H 1.00896 * 110.99653 * 56.04253 * 17 16 13 41 41 H 1.09001 * 109.47328 * 300.00482 * 18 17 16 42 42 H 1.09003 * 109.47195 * 59.99667 * 18 17 16 43 43 H 1.08994 * 108.89417 * 303.44175 * 21 19 18 44 44 H 1.08997 * 108.89199 * 61.93912 * 21 19 18 45 45 H 1.08995 * 109.62987 * 39.71623 * 22 21 19 46 46 H 1.09005 * 109.62452 * 160.29725 * 22 21 19 47 47 H 1.08995 * 108.87722 * 214.93685 * 23 22 21 48 48 H 1.09002 * 108.87655 * 333.48357 * 23 22 21 49 49 H 1.09002 * 108.81622 * 79.14756 * 24 23 22 50 50 H 1.09005 * 108.81782 * 197.53287 * 24 23 22 51 51 H 1.09002 * 109.63130 * 334.44010 * 28 25 24 52 52 H 1.08995 * 109.62831 * 213.86034 * 28 25 24 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 1.4690 0.0000 0.0000 3 6 1.9955 1.3714 0.0000 4 6 1.6369 2.0470 1.2985 5 1 1.0747 1.5112 2.0488 6 6 2.0277 3.3490 1.5290 7 7 1.7144 3.9388 2.6619 8 14 3.0010 4.2757 0.2315 9 1 4.4533 4.0623 0.4558 10 1 2.6296 3.7759 -1.1167 11 1 2.6936 5.7256 0.3239 12 6 1.9955 -0.7660 -1.1376 13 6 3.4456 -1.1649 -0.8566 14 1 4.0400 -0.2695 -0.6749 15 8 3.4926 -2.0097 0.2950 16 6 4.0110 -1.9161 -2.0637 17 7 5.4035 -2.2986 -1.7941 18 6 5.9802 -3.0240 -2.9337 19 6 7.4279 -3.4042 -2.6165 20 1 7.4457 -3.9860 -1.6950 21 6 7.9486 -4.2232 -3.7012 22 6 9.3877 -4.7089 -3.4324 23 6 10.3387 -3.5893 -3.7581 24 6 10.6988 -2.7433 -2.5219 25 6 9.4837 -2.4575 -1.6189 26 9 9.2236 -3.5891 -0.8386 27 9 9.7902 -1.3860 -0.7733 28 6 8.2485 -2.1151 -2.4071 29 1 -0.3634 0.5899 -0.8414 30 1 -0.3633 -1.0237 -0.0903 31 1 -0.3633 0.4337 0.9317 32 1 1.5612 1.9273 -0.8308 33 1 3.0798 1.3443 -0.1083 34 1 1.9890 4.8549 2.8240 35 1 1.3932 -1.6630 -1.2815 36 1 1.9552 -0.1531 -2.0380 37 1 2.9843 -2.8273 0.2040 38 1 3.4165 -2.8114 -2.2454 39 1 3.9751 -1.2716 -2.9421 40 1 5.4713 -2.8431 -0.9474 41 1 5.3996 -3.9273 -3.1209 42 1 5.9575 -2.3878 -3.8186 43 1 7.3016 -5.0908 -3.8303 44 1 7.9394 -3.6382 -4.6208 45 1 9.4913 -4.9837 -2.3827 46 1 9.6069 -5.5707 -4.0628 47 1 11.2528 -4.0128 -4.1742 48 1 9.8788 -2.9419 -4.5048 49 1 11.4521 -3.2743 -1.9399 50 1 11.1180 -1.7940 -2.8555 51 1 8.5341 -1.7017 -3.3744 52 1 7.6527 -1.3873 -1.8563 RHF calculation, no. of doubly occupied orbitals= 65 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 ZINC000570083805.mol2 52 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Tue Mar 31 2020 18:04:20 Heat of formation + Delta-G solvation = -156.252883 kcal Electronic energy + Delta-G solvation = -30324.946285 eV Core-core repulsion = 25994.579487 eV Total energy + Delta-G solvation = -4330.366797 eV No. of doubly occupied orbitals = 65 Molecular weight (most abundant/longest-lived isotopes) = 334.217 amu Computer time = 0.84 seconds Orbital eigenvalues (eV) -49.20849 -47.09074 -39.18545 -38.17110 -36.14022 -35.15890 -32.93994 -32.38783 -31.63355 -29.84956 -27.98944 -26.98274 -25.63983 -24.67095 -23.24615 -22.37202 -21.55054 -20.65453 -20.24573 -19.95648 -17.61314 -17.21310 -16.92971 -16.80201 -16.26875 -16.00116 -15.35693 -15.01684 -14.80056 -14.68080 -14.50288 -14.28249 -14.12422 -13.89940 -13.67742 -13.38133 -13.36748 -13.16373 -13.04816 -13.01472 -12.59900 -12.37715 -12.27057 -12.22230 -11.92364 -11.79224 -11.54041 -11.27550 -11.15993 -11.07095 -10.89667 -10.79307 -10.75862 -10.74424 -10.65560 -10.46562 -10.17779 -9.87250 -9.61821 -9.17729 -8.52011 -8.50020 -7.31475 -5.99457 -3.96139 3.33212 3.39832 3.40838 3.54122 3.81459 4.01527 4.04512 4.12331 4.44071 4.46981 4.50235 4.63001 4.64486 4.74671 4.81882 4.86577 4.91049 5.15746 5.20174 5.29003 5.29335 5.32216 5.34407 5.36586 5.45257 5.49619 5.53771 5.59569 5.60149 5.62951 5.69739 5.72739 5.75409 5.87144 5.92640 6.02531 6.04491 6.09390 6.26518 6.42188 6.67731 6.85780 6.90530 7.00574 7.30675 7.64208 7.89564 8.05684 8.08439 8.71416 9.09712 9.62309 11.13871 Molecular weight = 334.22amu Principal moments of inertia in cm(-1) A = 0.013970 B = 0.002602 C = 0.002341 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 2003.795946 B =10758.192579 C =11955.950229 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.040 3.960 2 N -0.522 5.522 3 C 0.162 3.838 4 C -0.505 4.505 5 H 0.080 0.920 6 C 0.068 3.932 7 N -0.901 5.901 8 Si 0.873 3.127 9 H -0.274 1.274 10 H -0.269 1.269 11 H -0.286 1.286 12 C 0.023 3.977 13 C 0.115 3.885 14 H 0.108 0.892 15 O -0.539 6.539 16 C 0.030 3.970 17 N -0.684 5.684 18 C 0.063 3.937 19 C -0.089 4.089 20 H 0.088 0.912 21 C -0.114 4.114 22 C -0.133 4.133 23 C -0.114 4.114 24 C -0.159 4.159 25 C 0.294 3.706 26 F -0.201 7.201 27 F -0.204 7.204 28 C -0.155 4.155 29 H 0.012 0.988 30 H 0.044 0.956 31 H 0.078 0.922 32 H -0.014 1.014 33 H 0.025 0.975 34 H 0.263 0.737 35 H 0.062 0.938 36 H 0.032 0.968 37 H 0.360 0.640 38 H 0.029 0.971 39 H 0.077 0.923 40 H 0.350 0.650 41 H 0.030 0.970 42 H 0.071 0.929 43 H 0.064 0.936 44 H 0.063 0.937 45 H 0.079 0.921 46 H 0.068 0.932 47 H 0.070 0.930 48 H 0.069 0.931 49 H 0.083 0.917 50 H 0.090 0.910 51 H 0.088 0.912 52 H 0.113 0.887 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges 15.215 -19.506 -17.658 30.394 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 -0.108 4.108 2 N -0.245 5.245 3 C 0.036 3.964 4 C -0.544 4.544 5 H 0.098 0.902 6 C -0.134 4.134 7 N -0.540 5.540 8 Si 0.701 3.299 9 H -0.200 1.200 10 H -0.194 1.194 11 H -0.212 1.212 12 C -0.107 4.107 13 C 0.055 3.945 14 H 0.126 0.874 15 O -0.341 6.341 16 C -0.100 4.100 17 N -0.316 5.316 18 C -0.066 4.066 19 C -0.108 4.108 20 H 0.106 0.894 21 C -0.152 4.152 22 C -0.170 4.170 23 C -0.151 4.151 24 C -0.197 4.197 25 C 0.258 3.742 26 F -0.182 7.182 27 F -0.185 7.185 28 C -0.193 4.193 29 H 0.030 0.970 30 H 0.063 0.937 31 H 0.096 0.904 32 H 0.004 0.996 33 H 0.043 0.957 34 H 0.073 0.927 35 H 0.081 0.919 36 H 0.050 0.950 37 H 0.205 0.795 38 H 0.047 0.953 39 H 0.095 0.905 40 H 0.170 0.830 41 H 0.048 0.952 42 H 0.089 0.911 43 H 0.082 0.918 44 H 0.081 0.919 45 H 0.098 0.902 46 H 0.086 0.914 47 H 0.089 0.911 48 H 0.087 0.913 49 H 0.102 0.898 50 H 0.109 0.891 51 H 0.107 0.893 52 H 0.131 0.869 Dipole moment (debyes) X Y Z Total from point charges 16.017 -18.452 -17.046 29.793 hybrid contribution -0.531 -0.147 -1.454 1.555 sum 15.486 -18.599 -18.500 30.463 Atomic orbital electron populations 1.22226 0.88173 0.98834 1.01564 1.61855 1.06969 1.16486 1.39200 1.20237 0.95014 0.83969 0.97217 1.21018 1.35433 0.97091 1.00826 0.90157 1.24897 0.95811 0.97391 0.95273 1.69892 1.47033 1.13254 1.23867 0.86891 0.81143 0.79236 0.82669 1.19968 1.19418 1.21239 1.22738 0.96168 0.98283 0.93478 1.21976 0.94966 0.93661 0.83933 0.87424 1.86722 1.73827 1.34379 1.39188 1.22664 0.88547 0.99000 0.99810 1.60319 1.18040 1.47709 1.05553 1.22047 0.93678 0.96333 0.94573 1.20046 0.94371 0.95508 1.00885 0.89391 1.20524 0.96478 0.99630 0.98575 1.21526 0.94272 0.97817 1.03387 1.21286 1.00310 0.97166 0.96346 1.22924 0.96275 1.02993 0.97487 1.20934 0.96701 0.72945 0.83584 1.92913 1.95084 1.52551 1.77615 1.93043 1.94562 1.56895 1.74031 1.22472 0.94406 1.00540 1.01860 0.96995 0.93680 0.90352 0.99646 0.95720 0.92720 0.91918 0.94996 0.79522 0.95299 0.90477 0.83044 0.95155 0.91080 0.91760 0.91856 0.90243 0.91365 0.91116 0.91255 0.89840 0.89128 0.89334 0.86900 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 12. 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 0.04 0.78 9.31 60.07 0.56 1.34 16 2 N -0.52 -11.02 4.59 -244.37 -1.12 -12.14 16 3 C 0.16 4.02 3.62 -4.98 -0.02 4.00 16 4 C -0.51 -14.78 9.13 -34.44 -0.31 -15.09 16 5 H 0.08 2.56 7.34 -52.49 -0.39 2.17 16 6 C 0.07 2.01 5.47 -17.82 -0.10 1.91 16 7 N -0.90 -28.26 13.96 55.43 0.77 -27.48 16 8 Si 0.87 22.05 27.47 -169.99 -4.67 17.38 16 9 H -0.27 -6.85 7.11 56.52 0.40 -6.44 16 10 H -0.27 -6.53 6.54 56.52 0.37 -6.16 16 11 H -0.29 -7.13 7.11 56.52 0.40 -6.73 16 12 C 0.02 0.38 4.65 -3.82 -0.02 0.36 16 13 C 0.11 1.76 3.31 -26.73 -0.09 1.67 16 14 H 0.11 2.00 6.73 -51.93 -0.35 1.66 16 15 O -0.54 -8.58 12.58 -35.23 -0.44 -9.02 16 16 C 0.03 0.34 5.39 -3.82 -0.02 0.32 16 17 N -0.68 -7.59 5.55 -113.78 -0.63 -8.23 16 18 C 0.06 0.55 4.99 -3.83 -0.02 0.53 16 19 C -0.09 -0.72 1.77 -93.48 -0.17 -0.89 16 20 H 0.09 0.83 6.40 -51.93 -0.33 0.49 16 21 C -0.11 -0.72 4.44 -29.60 -0.13 -0.85 16 22 C -0.13 -0.79 5.61 -27.34 -0.15 -0.95 16 23 C -0.11 -0.62 5.32 -27.44 -0.15 -0.76 16 24 C -0.16 -1.11 5.36 -25.62 -0.14 -1.25 16 25 C 0.29 2.91 1.97 -27.43 -0.05 2.86 16 26 F -0.20 -2.24 12.88 2.25 0.03 -2.21 16 27 F -0.20 -2.62 16.92 2.25 0.04 -2.58 16 28 C -0.15 -1.42 4.68 -27.34 -0.13 -1.55 16 29 H 0.01 0.22 8.08 -51.93 -0.42 -0.20 16 30 H 0.04 0.72 7.85 -51.93 -0.41 0.31 16 31 H 0.08 1.68 7.01 -51.93 -0.36 1.31 16 32 H -0.01 -0.35 7.13 -51.93 -0.37 -0.72 16 33 H 0.02 0.62 6.03 -51.93 -0.31 0.31 16 34 H 0.26 7.71 8.31 -40.82 -0.34 7.37 16 35 H 0.06 0.86 7.75 -51.93 -0.40 0.46 16 36 H 0.03 0.51 8.00 -51.93 -0.42 0.10 16 37 H 0.36 4.26 9.05 45.56 0.41 4.67 16 38 H 0.03 0.29 8.14 -51.93 -0.42 -0.13 16 39 H 0.08 0.87 8.14 -51.93 -0.42 0.45 16 40 H 0.35 4.06 8.12 -39.29 -0.32 3.74 16 41 H 0.03 0.25 8.07 -51.93 -0.42 -0.17 16 42 H 0.07 0.61 8.14 -51.93 -0.42 0.18 16 43 H 0.06 0.38 8.06 -51.93 -0.42 -0.04 16 44 H 0.06 0.36 7.47 -51.93 -0.39 -0.03 16 45 H 0.08 0.58 5.89 -51.93 -0.31 0.28 16 46 H 0.07 0.34 8.14 -51.93 -0.42 -0.08 16 47 H 0.07 0.31 8.14 -51.93 -0.42 -0.11 16 48 H 0.07 0.35 6.63 -51.93 -0.34 0.00 16 49 H 0.08 0.56 8.14 -51.93 -0.42 0.14 16 50 H 0.09 0.56 8.14 -51.93 -0.42 0.14 16 51 H 0.09 0.67 6.97 -51.93 -0.36 0.31 16 52 H 0.11 1.31 7.08 -51.93 -0.37 0.94 16 LS Contribution 394.68 15.07 5.95 5.95 Total: -1.00 -33.06 394.68 -9.41 -42.47 By element: Atomic # 1 Polarization: 12.61 SS G_CDS: -8.40 Total: 4.21 kcal Atomic # 6 Polarization: -7.41 SS G_CDS: -0.93 Total: -8.34 kcal Atomic # 7 Polarization: -46.87 SS G_CDS: -0.98 Total: -47.85 kcal Atomic # 8 Polarization: -8.58 SS G_CDS: -0.44 Total: -9.02 kcal Atomic # 9 Polarization: -4.86 SS G_CDS: 0.07 Total: -4.79 kcal Atomic # 14 Polarization: 22.05 SS G_CDS: -4.67 Total: 17.38 kcal Total LS contribution 5.95 Total: 5.95 kcal Total: -33.06 -9.41 -42.47 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. ZINC000570083805.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 -113.786 kcal (2) G-P(sol) polarization free energy of solvation -33.060 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -146.846 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -9.407 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -42.467 kcal (6) G-S(sol) free energy of system = (1) + (5) -156.253 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.84 seconds