Wall clock time and date at job start Wed Apr 1 2020 05:18:27 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 1.46497 * 1 3 3 C 1.46501 * 120.00473 * 2 1 4 4 C 1.52996 * 109.46946 * 269.99791 * 3 2 1 5 5 N 1.46905 * 109.47077 * 179.97438 * 4 3 2 6 6 C 1.46897 * 111.00193 * 294.30917 * 5 4 3 7 7 C 1.53244 * 109.33967 * 172.74522 * 6 5 4 8 8 N 1.47076 * 108.52059 * 53.82729 * 7 6 5 9 9 C 1.36936 * 120.88202 * 128.84345 * 8 7 6 10 10 H 1.08002 * 120.00043 * 210.77164 * 9 8 7 11 11 C 1.38814 * 120.00170 * 30.76184 * 9 8 7 12 12 N 1.31614 * 119.99836 * 10.60645 * 11 9 8 13 13 Si 1.86799 * 120.00119 * 190.59638 * 11 9 8 14 14 H 1.48504 * 109.46666 * 60.00506 * 13 11 9 15 15 H 1.48496 * 109.47130 * 180.02562 * 13 11 9 16 16 H 1.48499 * 109.47293 * 300.00471 * 13 11 9 17 17 C 1.47082 * 118.23706 * 308.81507 * 8 7 6 18 18 C 1.46898 * 110.99965 * 169.99909 * 5 4 3 19 19 C 1.34782 * 119.99784 * 179.97438 * 2 1 3 20 20 O 1.21278 * 120.00189 * 176.39311 * 19 2 1 21 21 C 1.50697 * 119.99797 * 356.67514 * 19 2 1 22 22 C 1.53003 * 109.47106 * 309.98982 * 21 19 2 23 23 C 1.53000 * 109.47547 * 69.98924 * 21 19 2 24 24 C 1.52995 * 109.47198 * 189.99180 * 21 19 2 25 25 C 1.52998 * 109.47391 * 180.02562 * 24 21 19 26 26 F 1.39903 * 109.46940 * 299.99853 * 24 21 19 27 27 F 1.39899 * 109.47273 * 59.99854 * 24 21 19 28 28 H 1.08997 * 109.47653 * 275.34557 * 1 2 3 29 29 H 1.09001 * 109.46934 * 35.34011 * 1 2 3 30 30 H 1.08997 * 109.47398 * 155.33905 * 1 2 3 31 31 H 1.08998 * 109.46627 * 29.99738 * 3 2 1 32 32 H 1.08994 * 109.47064 * 149.99643 * 3 2 1 33 33 H 1.08994 * 109.47850 * 300.00051 * 4 3 2 34 34 H 1.09002 * 109.47037 * 60.00054 * 4 3 2 35 35 H 1.09003 * 109.49216 * 292.70118 * 6 5 4 36 36 H 1.08998 * 109.49483 * 52.78055 * 6 5 4 37 37 H 1.08997 * 109.62368 * 294.11676 * 7 6 5 38 38 H 1.08998 * 109.62422 * 173.53824 * 7 6 5 39 39 H 0.96996 * 120.00294 * 179.97438 * 12 11 9 40 40 H 1.09007 * 109.62597 * 291.47627 * 17 8 7 41 41 H 1.09004 * 109.78853 * 170.99207 * 17 8 7 42 42 H 1.08994 * 109.49379 * 307.22071 * 18 5 4 43 43 H 1.08998 * 109.49085 * 67.29906 * 18 5 4 44 44 H 1.08998 * 109.47003 * 60.00324 * 22 21 19 45 45 H 1.09007 * 109.47045 * 179.97438 * 22 21 19 46 46 H 1.08995 * 109.47192 * 300.00239 * 22 21 19 47 47 H 1.09004 * 109.47137 * 72.11711 * 23 21 19 48 48 H 1.09001 * 109.47562 * 192.11637 * 23 21 19 49 49 H 1.09002 * 109.47430 * 312.12171 * 23 21 19 50 50 H 1.08995 * 109.47255 * 59.99884 * 25 24 21 51 51 H 1.09004 * 109.47451 * 179.97438 * 25 24 21 52 52 H 1.08999 * 109.46935 * 299.99808 * 25 24 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 7 1.4650 0.0000 0.0000 3 6 2.1976 1.2687 0.0000 4 6 2.4526 1.7102 -1.4425 5 7 3.1867 2.9827 -1.4425 6 6 2.3672 4.0634 -0.8782 7 6 3.2241 5.3249 -0.7284 8 7 3.8421 5.6270 -2.0284 9 6 3.7466 6.8774 -2.5785 10 1 3.7319 6.9954 -3.6519 11 6 3.6684 7.9932 -1.7564 12 7 3.8944 7.8763 -0.4651 13 14 3.2427 9.6606 -2.4829 14 1 1.9054 9.5938 -3.1251 15 1 3.2237 10.6805 -1.4037 16 1 4.2611 10.0331 -3.4975 17 6 4.5660 4.5506 -2.7217 18 6 3.6563 3.3196 -2.7931 19 6 2.1388 -1.1673 0.0005 20 8 3.3498 -1.1684 -0.0656 21 6 1.3872 -2.4712 0.0768 22 6 0.3861 -2.4159 1.2326 23 6 0.6375 -2.7054 -1.2363 24 6 2.3745 -3.6160 0.3116 25 6 1.6115 -4.9399 0.3884 26 9 3.2898 -3.6666 -0.7453 27 9 3.0599 -3.4020 1.5122 28 1 -0.3634 0.0957 1.0231 29 1 -0.3633 0.8383 -0.5944 30 1 -0.3634 -0.9339 -0.4288 31 1 1.6085 2.0283 0.5138 32 1 3.1499 1.1383 0.5139 33 1 3.0416 0.9506 -1.9564 34 1 1.5002 1.8406 -1.9563 35 1 1.5292 4.2699 -1.5440 36 1 1.9901 3.7616 0.0989 37 1 4.0018 5.1529 0.0156 38 1 2.5955 6.1599 -0.4189 39 1 3.8402 8.6560 0.1093 40 1 5.4728 4.3043 -2.1692 41 1 4.8275 4.8716 -3.7300 42 1 4.2141 2.4784 -3.2045 43 1 2.8004 3.5364 -3.4321 44 1 -0.3173 -1.6003 1.0653 45 1 -0.1579 -3.3589 1.2875 46 1 0.9201 -2.2491 2.1681 47 1 1.3502 -2.9583 -2.0214 48 1 -0.0697 -3.5251 -1.1097 49 1 0.0981 -1.7996 -1.5133 50 1 1.0778 -5.1066 -0.5473 51 1 2.3149 -5.7557 0.5552 52 1 0.8981 -4.9009 1.2116 RHF calculation, no. of doubly occupied orbitals= 67 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 ZINC001732064258.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 05:18:27 Heat of formation + Delta-G solvation = -78.792968 kcal Electronic energy + Delta-G solvation = -32794.101518 eV Core-core repulsion = 28273.441583 eV Total energy + Delta-G solvation = -4520.659935 eV No. of doubly occupied orbitals = 67 Molecular weight (most abundant/longest-lived isotopes) = 347.213 amu Computer time = 1.24 seconds Orbital eigenvalues (eV) -49.09185 -47.05065 -40.65389 -38.16030 -36.50436 -35.90174 -34.22943 -31.63736 -30.65782 -29.89750 -29.00804 -27.99871 -27.36595 -26.01555 -24.89474 -23.51826 -22.54893 -21.93118 -20.75060 -19.50067 -19.05862 -17.55740 -17.40407 -17.12282 -16.77535 -16.09028 -15.93412 -15.50683 -15.08404 -14.63261 -14.58989 -14.38198 -14.04026 -13.99950 -13.87141 -13.66059 -13.46937 -13.41379 -13.38764 -13.27588 -13.12767 -12.86626 -12.75807 -12.61416 -12.34320 -12.25751 -12.12563 -11.81572 -11.72422 -11.70383 -11.39188 -10.98702 -10.92874 -10.86117 -10.73619 -10.43210 -10.25553 -10.01083 -9.81587 -9.74649 -9.60005 -8.83793 -8.48674 -7.78285 -6.56833 -5.75205 -3.21967 2.39377 2.64036 3.32531 3.39007 3.44116 3.45109 3.66746 3.88682 3.99816 4.31615 4.46378 4.49512 4.50411 4.53463 4.64910 4.94855 4.97680 5.00784 5.06997 5.10842 5.14387 5.20265 5.26863 5.27323 5.32643 5.40867 5.43702 5.47818 5.61122 5.64995 5.66668 5.84311 5.93725 6.02341 6.10998 6.17954 6.24709 6.33063 6.41146 6.57847 6.74390 7.00165 7.13266 7.29359 7.63974 7.69333 7.74772 7.84347 7.96158 8.49403 9.25322 9.86712 10.47881 11.33423 Molecular weight = 347.21amu Principal moments of inertia in cm(-1) A = 0.027458 B = 0.002138 C = 0.002098 Principal moments of inertia in units of 10**(-40)*gram-cm**2 A = 1019.488945 B =13091.011962 C =13344.688584 Net atomic charges, atomic populations, and dipole contributions calculated with CM2 Atom NO. Type Charge No. of electrons 1 C 0.056 3.944 2 N -0.609 5.609 3 C 0.119 3.881 4 C 0.045 3.955 5 N -0.530 5.530 6 C 0.032 3.968 7 C 0.180 3.820 8 N -0.595 5.595 9 C -0.252 4.252 10 H 0.063 0.937 11 C 0.003 3.997 12 N -0.905 5.905 13 Si 0.905 3.095 14 H -0.284 1.284 15 H -0.290 1.290 16 H -0.282 1.282 17 C 0.149 3.851 18 C 0.048 3.952 19 C 0.521 3.479 20 O -0.512 6.512 21 C -0.125 4.125 22 C -0.171 4.171 23 C -0.155 4.155 24 C 0.313 3.687 25 C -0.198 4.198 26 F -0.188 7.188 27 F -0.193 7.193 28 H 0.063 0.937 29 H 0.072 0.928 30 H 0.090 0.910 31 H 0.081 0.919 32 H 0.093 0.907 33 H 0.070 0.930 34 H 0.024 0.976 35 H 0.023 0.977 36 H 0.060 0.940 37 H 0.027 0.973 38 H 0.087 0.913 39 H 0.254 0.746 40 H 0.026 0.974 41 H 0.055 0.945 42 H 0.061 0.939 43 H 0.026 0.974 44 H 0.095 0.905 45 H 0.075 0.925 46 H 0.071 0.929 47 H 0.075 0.925 48 H 0.078 0.922 49 H 0.083 0.917 50 H 0.091 0.909 51 H 0.084 0.916 52 H 0.092 0.908 For the charges calculated by CM2: Dipole moment (debyes) X Y Z Total from point charges -13.256 -25.991 2.575 29.290 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 -0.087 4.087 2 N -0.343 5.343 3 C -0.003 4.003 4 C -0.084 4.084 5 N -0.255 5.255 6 C -0.097 4.097 7 C 0.054 3.946 8 N -0.319 5.319 9 C -0.382 4.382 10 H 0.081 0.919 11 C -0.195 4.195 12 N -0.550 5.550 13 Si 0.735 3.265 14 H -0.211 1.211 15 H -0.216 1.216 16 H -0.209 1.209 17 C 0.022 3.978 18 C -0.082 4.082 19 C 0.306 3.694 20 O -0.385 6.385 21 C -0.129 4.129 22 C -0.227 4.227 23 C -0.212 4.212 24 C 0.276 3.724 25 C -0.255 4.255 26 F -0.169 7.169 27 F -0.174 7.174 28 H 0.082 0.918 29 H 0.091 0.909 30 H 0.108 0.892 31 H 0.099 0.901 32 H 0.112 0.888 33 H 0.089 0.911 34 H 0.042 0.958 35 H 0.042 0.958 36 H 0.078 0.922 37 H 0.045 0.955 38 H 0.105 0.895 39 H 0.065 0.935 40 H 0.044 0.956 41 H 0.074 0.926 42 H 0.079 0.921 43 H 0.044 0.956 44 H 0.113 0.887 45 H 0.094 0.906 46 H 0.090 0.910 47 H 0.094 0.906 48 H 0.097 0.903 49 H 0.102 0.898 50 H 0.110 0.890 51 H 0.103 0.897 52 H 0.110 0.890 Dipole moment (debyes) X Y Z Total from point charges -12.126 -25.865 2.968 28.720 hybrid contribution -0.850 1.046 -0.812 1.573 sum -12.976 -24.819 2.156 28.089 Atomic orbital electron populations 1.22454 0.80063 1.03955 1.02214 1.47704 1.06780 1.06050 1.73801 1.21547 0.98104 0.83034 0.97613 1.22347 0.96541 0.93307 0.96242 1.61860 1.39065 1.01729 1.22837 1.22989 0.95539 0.93767 0.97392 1.20848 0.94519 0.91969 0.87289 1.44058 1.59712 1.07322 1.20796 1.19130 1.45333 0.82641 0.91117 0.91926 1.25166 1.00582 0.97831 0.95964 1.69963 1.52431 1.29158 1.03418 0.86336 0.78412 0.83770 0.77991 1.21100 1.21588 1.20863 1.20988 0.92986 0.87410 0.96420 1.22595 0.98495 0.99029 0.88066 1.20070 0.87795 0.84675 0.76812 1.90813 1.13432 1.86697 1.47594 1.21843 0.97202 0.93310 1.00537 1.22516 0.98740 1.04834 0.96654 1.22149 1.00799 1.03819 0.94385 1.20585 0.83274 0.95788 0.72779 1.22892 1.02084 0.94984 1.05542 1.93044 1.69425 1.97300 1.57125 1.93026 1.81889 1.96065 1.46425 0.91819 0.90912 0.89218 0.90103 0.88839 0.91129 0.95778 0.95843 0.92177 0.95497 0.89468 0.93544 0.95571 0.92635 0.92067 0.95597 0.88681 0.90606 0.91004 0.90649 0.90282 0.89838 0.88997 0.89725 0.88960 Number of geometries 1 Number of calculations of the screened coulomb radii 1 The total number of SCF iterations 16. 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 0.06 0.37 8.30 59.85 0.50 0.87 16 2 N -0.61 -6.80 2.87 -181.58 -0.52 -7.32 16 3 C 0.12 1.64 5.34 -4.04 -0.02 1.62 16 4 C 0.05 0.70 5.29 -3.82 -0.02 0.68 16 5 N -0.53 -9.92 4.63 -234.33 -1.08 -11.00 16 6 C 0.03 0.63 5.46 -3.70 -0.02 0.61 16 7 C 0.18 4.42 5.36 -3.60 -0.02 4.40 16 8 N -0.60 -15.50 3.03 -172.01 -0.52 -16.03 16 9 C -0.25 -7.07 9.62 -15.06 -0.14 -7.21 16 10 H 0.06 1.72 7.85 -52.49 -0.41 1.30 16 11 C 0.00 0.09 5.06 -17.43 -0.09 0.00 16 12 N -0.91 -26.56 11.07 55.49 0.61 -25.95 16 13 Si 0.91 21.86 29.57 -169.99 -5.03 16.83 16 14 H -0.28 -6.77 7.11 56.52 0.40 -6.36 16 15 H -0.29 -7.03 7.11 56.52 0.40 -6.63 16 16 H -0.28 -6.76 7.11 56.52 0.40 -6.35 16 17 C 0.15 3.32 6.69 -3.60 -0.02 3.30 16 18 C 0.05 0.91 5.62 -3.70 -0.02 0.89 16 19 C 0.52 6.70 6.22 -10.98 -0.07 6.63 16 20 O -0.51 -9.08 14.51 5.56 0.08 -9.00 16 21 C -0.12 -1.08 0.24 -155.66 -0.04 -1.12 16 22 C -0.17 -0.97 7.53 37.16 0.28 -0.69 16 23 C -0.15 -0.93 7.39 37.16 0.27 -0.65 16 24 C 0.31 3.20 1.16 -26.73 -0.03 3.16 16 25 C -0.20 -1.10 8.70 37.16 0.32 -0.78 16 26 F -0.19 -2.52 15.21 2.25 0.03 -2.48 16 27 F -0.19 -2.52 15.88 2.25 0.04 -2.49 16 28 H 0.06 0.34 7.19 -51.93 -0.37 -0.03 16 29 H 0.07 0.48 8.11 -51.93 -0.42 0.06 16 30 H 0.09 0.42 3.13 -51.93 -0.16 0.25 16 31 H 0.08 1.03 6.33 -51.93 -0.33 0.70 16 32 H 0.09 1.53 7.47 -51.93 -0.39 1.14 16 33 H 0.07 1.16 7.97 -51.93 -0.41 0.75 16 34 H 0.02 0.35 8.12 -51.93 -0.42 -0.07 16 35 H 0.02 0.47 8.14 -51.93 -0.42 0.05 16 36 H 0.06 1.04 6.16 -51.93 -0.32 0.72 16 37 H 0.03 0.71 8.14 -51.93 -0.42 0.29 16 38 H 0.09 2.34 6.24 -51.93 -0.32 2.02 16 39 H 0.25 7.21 8.31 -40.82 -0.34 6.87 16 40 H 0.03 0.61 8.14 -51.92 -0.42 0.19 16 41 H 0.06 1.19 7.96 -51.93 -0.41 0.77 16 42 H 0.06 1.06 7.99 -51.93 -0.41 0.64 16 43 H 0.03 0.50 8.14 -51.93 -0.42 0.08 16 44 H 0.09 0.40 3.72 -51.93 -0.19 0.21 16 45 H 0.08 0.24 6.43 -51.93 -0.33 -0.09 16 46 H 0.07 0.52 7.80 -51.93 -0.41 0.11 16 47 H 0.07 0.56 7.49 -51.93 -0.39 0.17 16 48 H 0.08 0.24 7.08 -51.93 -0.37 -0.12 16 49 H 0.08 0.44 5.32 -51.93 -0.28 0.16 16 50 H 0.09 0.34 6.72 -51.93 -0.35 0.00 16 51 H 0.08 0.46 8.14 -51.93 -0.42 0.04 16 52 H 0.09 0.34 6.43 -51.93 -0.33 0.01 16 LS Contribution 390.59 15.07 5.89 5.89 Total: -1.00 -35.05 390.59 -7.91 -42.96 By element: Atomic # 1 Polarization: 5.16 SS G_CDS: -8.29 Total: -3.13 kcal Atomic # 6 Polarization: 10.84 SS G_CDS: 0.88 Total: 11.72 kcal Atomic # 7 Polarization: -58.79 SS G_CDS: -1.51 Total: -60.30 kcal Atomic # 8 Polarization: -9.08 SS G_CDS: 0.08 Total: -9.00 kcal Atomic # 9 Polarization: -5.04 SS G_CDS: 0.07 Total: -4.97 kcal Atomic # 14 Polarization: 21.86 SS G_CDS: -5.03 Total: 16.83 kcal Total LS contribution 5.89 Total: 5.89 kcal Total: -35.05 -7.91 -42.96 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. ZINC001732064258.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 -35.835 kcal (2) G-P(sol) polarization free energy of solvation -35.047 kcal (3) G-ENP(sol) elect.-nuc.-pol. free energy of system -70.881 kcal (4) G-CDS(sol) cavity-dispersion-solvent structure free energy -7.912 kcal (5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -42.958 kcal (6) G-S(sol) free energy of system = (1) + (5) -78.793 kcal 1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED Total computer time = 1.25 seconds