Wall clock time and date at job start Sat Apr 11 2020 06:09:45 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= -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 1.52998 * 1 3 3 C 1.52998 * 109.47380 * 2 1 4 4 C 1.50701 * 109.46868 * 239.99779 * 2 1 3 5 5 H 1.07998 * 119.99586 * 241.34601 * 4 2 1 6 6 C 1.37868 * 119.99998 * 61.34803 * 4 2 1 7 7 N 1.31511 * 120.00310 * 193.97275 * 6 4 2 8 8 Si 1.86803 * 119.99918 * 13.97625 * 6 4 2 9 9 H 1.48502 * 109.47154 * 84.54782 * 8 6 4 10 10 H 1.48505 * 109.47036 * 204.54610 * 8 6 4 11 11 H 1.48497 * 109.47229 * 324.54673 * 8 6 4 12 12 C 1.53006 * 109.47026 * 120.00099 * 2 1 3 13 13 N 1.46500 * 109.46853 * 299.99743 * 12 2 1 14 14 C 1.34778 * 119.99703 * 179.97438 * 13 12 2 15 15 O 1.21591 * 120.00158 * 0.02562 * 14 13 12 16 16 N 1.34777 * 119.99988 * 179.97438 * 14 13 12 17 17 C 1.46503 * 120.00052 * 180.27859 * 16 14 13 18 18 H 1.08999 * 109.54294 * 34.90749 * 17 16 14 19 19 C 1.53173 * 109.54438 * 274.72889 * 17 16 14 20 20 C 1.53095 * 109.16471 * 183.10232 * 19 17 16 21 21 O 1.42914 * 109.39761 * 57.67417 * 20 19 17 22 22 C 1.42816 * 114.13232 * 298.95032 * 21 20 19 23 23 C 1.53109 * 109.54663 * 300.77966 * 22 21 20 24 24 C 1.53104 * 109.15959 * 296.97890 * 23 22 21 25 25 O 1.42907 * 109.41036 * 302.48946 * 24 23 22 26 26 C 1.42905 * 114.12777 * 61.16451 * 25 24 23 27 27 C 1.53104 * 109.39793 * 298.82182 * 26 25 24 28 28 C 1.53007 * 109.58127 * 60.95064 * 22 21 20 29 29 H 1.09006 * 109.46932 * 309.36794 * 1 2 3 30 30 H 1.08998 * 109.47543 * 69.36575 * 1 2 3 31 31 H 1.09001 * 109.47136 * 189.37268 * 1 2 3 32 32 H 1.08999 * 109.47194 * 179.97438 * 3 2 1 33 33 H 1.08997 * 109.46836 * 300.00468 * 3 2 1 34 34 H 1.09002 * 109.46649 * 59.99963 * 3 2 1 35 35 H 0.96998 * 120.00545 * 180.02562 * 7 6 4 36 36 H 1.08999 * 109.47182 * 179.97438 * 12 2 1 37 37 H 1.08997 * 109.47193 * 59.99454 * 12 2 1 38 38 H 0.96998 * 120.00263 * 0.02562 * 13 12 2 39 39 H 0.96998 * 119.99978 * 0.02562 * 16 14 13 40 40 H 1.09010 * 109.52118 * 303.00879 * 19 17 16 41 41 H 1.08998 * 109.52609 * 63.12943 * 19 17 16 42 42 H 1.09002 * 109.48489 * 177.65402 * 20 19 17 43 43 H 1.09000 * 109.47848 * 297.68621 * 20 19 17 44 44 H 1.09002 * 109.51773 * 56.87807 * 23 22 21 45 45 H 1.09000 * 109.52093 * 177.06964 * 23 22 21 46 46 H 1.08997 * 109.48131 * 182.51384 * 24 23 22 47 47 H 1.09005 * 109.49313 * 62.47763 * 24 23 22 48 48 H 1.09002 * 109.48131 * 178.84253 * 26 25 24 49 49 H 1.09002 * 109.49414 * 58.80647 * 26 25 24 50 50 H 1.09004 * 109.52425 * 297.64333 * 27 26 25 51 51 H 1.09003 * 109.52604 * 177.44814 * 27 26 25 52 52 H 1.09002 * 109.51176 * 182.69743 * 28 22 21 53 53 H 1.08994 * 109.51561 * 62.52695 * 28 22 21 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 1.5300 0.0000 0.0000 3 6 2.0400 1.4425 0.0000 4 6 2.0322 -0.7105 -1.2305 5 1 2.6351 -1.6011 -1.1314 6 6 1.7222 -0.2235 -2.4825 7 7 1.9157 -0.9726 -3.5459 8 14 1.0275 1.5006 -2.6683 9 1 2.1417 2.4816 -2.7083 10 1 0.2469 1.5864 -3.9288 11 1 0.1417 1.8042 -1.5158 12 6 2.0400 -0.7213 1.2493 13 7 1.5516 -0.0306 2.4454 14 6 1.8768 -0.4914 3.6695 15 8 2.5758 -1.4801 3.7811 16 7 1.4280 0.1442 4.7700 17 6 1.7865 -0.3531 6.1006 18 1 2.7975 -0.7598 6.0777 19 6 0.8025 -1.4494 6.5201 20 6 1.1376 -1.9083 7.9417 21 8 1.0841 -0.7878 8.8272 22 6 2.0124 0.2506 8.5116 23 6 3.4379 -0.3065 8.5532 24 6 3.7530 -0.7748 9.9764 25 8 3.5861 0.3167 10.8835 26 6 2.2594 0.8464 10.9222 27 6 1.8844 1.3803 9.5372 28 6 1.7168 0.7949 7.1125 29 1 -0.3633 0.6519 0.7945 30 1 -0.3634 0.3621 -0.9617 31 1 -0.3633 -1.0140 0.1674 32 1 3.1300 1.4424 0.0005 33 1 1.6766 1.9563 -0.8899 34 1 1.6767 1.9562 0.8900 35 1 1.6979 -0.6299 -4.4268 36 1 3.1300 -0.7217 1.2491 37 1 1.6766 -1.7489 1.2493 38 1 0.9937 0.7578 2.3564 39 1 0.8707 0.9331 4.6810 40 1 -0.2138 -1.0560 6.4944 41 1 0.8837 -2.2934 5.8352 42 1 0.4148 -2.6591 8.2613 43 1 2.1393 -2.3376 7.9584 44 1 3.5199 -1.1486 7.8661 45 1 4.1421 0.4727 8.2617 46 1 4.7820 -1.1313 10.0222 47 1 3.0756 -1.5832 10.2517 48 1 2.2127 1.6571 11.6493 49 1 1.5618 0.0596 11.2096 50 1 2.5558 2.1954 9.2669 51 1 0.8568 1.7436 9.5527 52 1 2.4551 1.5539 6.8537 53 1 0.7198 1.2348 7.0961 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 ZINC000591856957.mol2 53 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED SCF FIELD WAS ACHIEVED Wall clock time and date at job start Sat Apr 11 2020 06:09:45 Heat of formation + Delta-G solvation = -114.900547 kcal Electronic energy + Delta-G solvation = -31310.795223 eV Core-core repulsion = 27182.850502 eV Total energy + Delta-G solvation = -4127.944720 eV No. of doubly occupied orbitals = 66 Molecular weight (most abundant/longest-lived isotopes) = 340.220 amu Computer time = 0.73 seconds Orbital eigenvalues (eV) -41.18663 -39.69965 -38.14894 -36.90419 -35.18574 -33.62743 -33.36893 -31.91159 -31.51567 -30.94594 -29.04028 -26.42995 -26.03093 -25.01262 -24.27839 -24.16644 -23.63248 -21.34308 -20.59409 -19.69798 -19.21165 -18.14969 -17.16519 -16.54110 -16.30800 -16.12778 -15.89080 -15.71859 -15.37135 -15.27333 -14.96933 -14.93432 -14.36816 -14.11075 -13.85793 -13.54131 -13.29088 -13.05050 -12.91125 -12.89492 -12.74804 -12.61320 -12.31338 -12.22956 -12.06697 -11.79915 -11.76251 -11.47160 -11.37639 -11.13556 -10.81965 -10.52855 -10.44668 -10.33037 -10.19127 -10.08661 -10.03648 -9.92367 -9.59811 -9.15178 -9.11206 -8.70792 -8.50883 -8.38315 -6.16308 -4.13578 2.88462 3.21978 3.28900 3.32948 3.36774 3.48493 3.55333 4.12058 4.30972 4.32430 4.33632 4.51452 4.53949 4.59880 4.76291 4.83971 4.89633 4.99910 5.01205 5.04587 5.14337 5.21369 5.29312 5.33656 5.39099 5.40387 5.53051 5.58121 5.59672 5.66519 5.73042 5.77002 5.87884 5.99826 6.02908 6.05915 6.32775 6.42572 6.50302 6.54154 6.59969 6.68521 6.80225 6.85279 6.88183 6.96354 7.16664 7.22931 7.41473 7.71131 8.28205 8.45158 8.87777 8.90765 9.47473 10.96762 Molecular weight = 340.22amu Principal moments of inertia in cm(-1) A = 0.029276 B = 0.002107 C = 0.002077 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 956.199993 B =13287.559657 C =13477.054949 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C -0.141 4.141 2 C 0.028 3.972 3 C -0.146 4.146 4 C -0.512 4.512 5 H 0.077 0.923 6 C 0.075 3.925 7 N -0.891 5.891 8 Si 0.886 3.114 9 H -0.286 1.286 10 H -0.305 1.305 11 H -0.250 1.250 12 C 0.161 3.839 13 N -0.738 5.738 14 C 0.699 3.301 15 O -0.595 6.595 16 N -0.749 5.749 17 C 0.166 3.834 18 H 0.090 0.910 19 C -0.167 4.167 20 C 0.061 3.939 21 O -0.371 6.371 22 C 0.124 3.876 23 C -0.187 4.187 24 C 0.066 3.934 25 O -0.384 6.384 26 C 0.063 3.937 27 C -0.139 4.139 28 C -0.149 4.149 29 H 0.020 0.980 30 H 0.056 0.944 31 H 0.047 0.953 32 H 0.053 0.947 33 H 0.041 0.959 34 H 0.028 0.972 35 H 0.265 0.735 36 H 0.059 0.941 37 H 0.060 0.940 38 H 0.392 0.608 39 H 0.393 0.607 40 H 0.072 0.928 41 H 0.082 0.918 42 H 0.097 0.903 43 H 0.056 0.944 44 H 0.084 0.916 45 H 0.084 0.916 46 H 0.093 0.907 47 H 0.055 0.945 48 H 0.093 0.907 49 H 0.059 0.941 50 H 0.085 0.915 51 H 0.082 0.918 52 H 0.080 0.920 53 H 0.078 0.922 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -2.655 5.426 27.973 28.618 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 -0.198 4.198 2 C 0.027 3.973 3 C -0.203 4.203 4 C -0.550 4.550 5 H 0.095 0.905 6 C -0.128 4.128 7 N -0.527 5.527 8 Si 0.719 3.281 9 H -0.214 1.214 10 H -0.234 1.234 11 H -0.176 1.176 12 C 0.038 3.962 13 N -0.392 5.392 14 C 0.399 3.601 15 O -0.474 6.474 16 N -0.405 5.405 17 C 0.060 3.940 18 H 0.108 0.892 19 C -0.207 4.207 20 C -0.016 4.016 21 O -0.290 6.290 22 C 0.084 3.916 23 C -0.224 4.224 24 C -0.011 4.011 25 O -0.303 6.303 26 C -0.014 4.014 27 C -0.177 4.177 28 C -0.187 4.187 29 H 0.039 0.961 30 H 0.074 0.926 31 H 0.066 0.934 32 H 0.072 0.928 33 H 0.059 0.941 34 H 0.047 0.953 35 H 0.074 0.926 36 H 0.078 0.922 37 H 0.079 0.921 38 H 0.226 0.774 39 H 0.226 0.774 40 H 0.090 0.910 41 H 0.101 0.899 42 H 0.115 0.885 43 H 0.074 0.926 44 H 0.102 0.898 45 H 0.102 0.898 46 H 0.112 0.888 47 H 0.074 0.926 48 H 0.111 0.889 49 H 0.077 0.923 50 H 0.104 0.896 51 H 0.101 0.899 52 H 0.099 0.901 53 H 0.097 0.903 Dipole moment (debyes) X Y Z Total from point charges -1.970 4.541 28.083 28.516 hybrid contribution -0.973 1.584 -1.051 2.135 sum -2.943 6.126 27.033 27.874 Atomic orbital electron populations 1.22285 0.97876 0.99801 0.99856 1.18732 0.92494 0.92265 0.93799 1.22348 1.01190 0.98332 0.98459 1.20708 1.34044 1.12323 0.87946 0.90511 1.24974 0.94706 0.97301 0.95802 1.69947 1.48174 1.35890 0.98715 0.87288 0.79305 0.85580 0.75949 1.21386 1.23420 1.17583 1.21372 0.98333 0.95424 0.81097 1.45512 1.55818 1.33076 1.04796 1.16047 0.80404 0.83022 0.80604 1.90896 1.42968 1.27522 1.85997 1.45193 1.57343 1.33287 1.04633 1.20728 0.99422 0.93285 0.80585 0.89205 1.22647 1.00353 1.00351 0.97308 1.22600 1.01748 0.88399 0.88843 1.87930 1.59117 1.28721 1.53223 1.21312 0.88503 0.88302 0.93481 1.22871 0.97317 1.03218 0.99042 1.22498 1.01871 0.88950 0.87775 1.87917 1.29624 1.50227 1.62541 1.22530 0.84306 0.98507 0.96018 1.22188 1.03392 0.96800 0.95302 1.22459 1.03526 0.98470 0.94247 0.96053 0.92571 0.93416 0.92800 0.94090 0.95275 0.92553 0.92216 0.92121 0.77423 0.77396 0.90960 0.89892 0.88473 0.92588 0.89758 0.89782 0.88844 0.92622 0.88914 0.92267 0.89618 0.89905 0.90119 0.90349 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 -0.14 -2.83 7.53 37.16 0.28 -2.55 16 2 C 0.03 0.61 0.50 -155.66 -0.08 0.53 16 3 C -0.15 -2.93 7.52 37.16 0.28 -2.65 16 4 C -0.51 -13.68 8.62 -34.44 -0.30 -13.98 16 5 H 0.08 2.26 7.99 -52.49 -0.42 1.84 16 6 C 0.07 2.07 5.32 -17.82 -0.09 1.97 16 7 N -0.89 -26.52 13.96 55.43 0.77 -25.74 16 8 Si 0.89 20.96 22.79 -169.99 -3.87 17.09 16 9 H -0.29 -6.75 7.10 56.52 0.40 -6.35 16 10 H -0.31 -7.41 7.11 56.52 0.40 -7.01 16 11 H -0.25 -5.35 4.65 56.52 0.26 -5.09 16 12 C 0.16 3.21 4.49 -4.04 -0.02 3.19 16 13 N -0.74 -11.92 5.01 -65.22 -0.33 -12.25 16 14 C 0.70 11.32 8.54 -86.92 -0.74 10.58 16 15 O -0.60 -12.00 16.01 5.29 0.08 -11.92 16 16 N -0.75 -8.68 5.09 -58.49 -0.30 -8.98 16 17 C 0.17 1.72 2.23 -67.74 -0.15 1.56 16 18 H 0.09 1.11 6.16 -51.93 -0.32 0.79 16 19 C -0.17 -1.67 5.72 -26.59 -0.15 -1.82 16 20 C 0.06 0.52 6.52 37.21 0.24 0.76 16 21 O -0.37 -3.30 9.20 -35.23 -0.32 -3.62 16 22 C 0.12 0.98 0.68 -90.50 -0.06 0.91 16 23 C -0.19 -1.49 4.25 -26.62 -0.11 -1.60 16 24 C 0.07 0.52 6.70 37.21 0.25 0.77 16 25 O -0.38 -3.57 10.76 -35.23 -0.38 -3.95 16 26 C 0.06 0.46 6.70 37.21 0.25 0.71 16 27 C -0.14 -0.94 5.15 -26.62 -0.14 -1.08 16 28 C -0.15 -1.17 4.39 -26.63 -0.12 -1.29 16 29 H 0.02 0.35 7.13 -51.93 -0.37 -0.02 16 30 H 0.06 1.21 4.30 -51.93 -0.22 0.98 16 31 H 0.05 0.96 8.12 -51.93 -0.42 0.53 16 32 H 0.05 1.08 8.14 -51.93 -0.42 0.66 16 33 H 0.04 0.87 2.25 -51.93 -0.12 0.75 16 34 H 0.03 0.48 6.86 -51.93 -0.36 0.12 16 35 H 0.26 7.43 8.31 -40.82 -0.34 7.09 16 36 H 0.06 1.27 8.14 -51.93 -0.42 0.85 16 37 H 0.06 1.30 8.14 -51.93 -0.42 0.88 16 38 H 0.39 5.43 6.27 -40.82 -0.26 5.18 16 39 H 0.39 3.54 8.62 -40.82 -0.35 3.18 16 40 H 0.07 0.70 8.14 -51.92 -0.42 0.28 16 41 H 0.08 1.00 8.14 -51.93 -0.42 0.58 16 42 H 0.10 0.70 8.14 -51.93 -0.42 0.28 16 43 H 0.06 0.46 6.30 -51.93 -0.33 0.13 16 44 H 0.08 0.70 5.02 -51.93 -0.26 0.44 16 45 H 0.08 0.67 8.14 -51.93 -0.42 0.24 16 46 H 0.09 0.64 8.14 -51.93 -0.42 0.22 16 47 H 0.06 0.44 7.82 -51.93 -0.41 0.04 16 48 H 0.09 0.53 8.14 -51.93 -0.42 0.10 16 49 H 0.06 0.45 7.82 -51.93 -0.41 0.04 16 50 H 0.09 0.54 8.14 -51.93 -0.42 0.11 16 51 H 0.08 0.50 8.14 -51.93 -0.42 0.08 16 52 H 0.08 0.61 8.14 -51.93 -0.42 0.18 16 53 H 0.08 0.57 8.14 -51.93 -0.42 0.15 16 LS Contribution 385.35 15.07 5.81 5.81 Total: -1.00 -32.08 385.35 -8.20 -40.29 By element: Atomic # 1 Polarization: 16.26 SS G_CDS: -9.01 Total: 7.26 kcal Atomic # 6 Polarization: -3.31 SS G_CDS: -0.66 Total: -3.98 kcal Atomic # 7 Polarization: -47.12 SS G_CDS: 0.15 Total: -46.97 kcal Atomic # 8 Polarization: -18.87 SS G_CDS: -0.62 Total: -19.49 kcal Atomic # 14 Polarization: 20.96 SS G_CDS: -3.87 Total: 17.09 kcal Total LS contribution 5.81 Total: 5.81 kcal Total: -32.08 -8.20 -40.29 kcal The number of atoms in the molecule is 53 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. ZINC000591856957.mol2 53 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 -74.613 kcal (2) G-P(sol) polarization free energy of solvation -32.084 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -106.697 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -8.203 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -40.287 kcal (6) G-S(sol) free energy of system = (1) + (5) -114.901 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 0.73 seconds