Wall clock time and date at job start Tue Mar 31 2020 21:07:00
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 1.53005 * 1
3 3 H 1.09008 * 109.47019 * 2 1
4 4 N 1.46502 * 109.47133 * 119.99660 * 2 1 3
5 5 C 1.34781 * 120.00105 * 275.00010 * 4 2 1
6 6 O 1.21584 * 119.99916 * 0.02562 * 5 4 2
7 7 N 1.34773 * 120.00007 * 180.02562 * 5 4 2
8 8 C 1.46495 * 119.99816 * 180.02562 * 7 5 4
9 9 C 1.53010 * 109.46995 * 175.88385 * 8 7 5
10 10 C 1.50699 * 115.55030 * 36.59233 * 9 8 7
11 11 H 1.08001 * 120.00114 * 268.83796 * 10 9 8
12 12 C 1.37873 * 119.99798 * 88.83010 * 10 9 8
13 13 N 1.31513 * 120.00410 * 3.24326 * 12 10 9
14 14 Si 1.86806 * 119.99920 * 183.23895 * 12 10 9
15 15 H 1.48496 * 109.46878 * 0.02562 * 14 12 10
16 16 H 1.48496 * 109.46772 * 120.00234 * 14 12 10
17 17 H 1.48501 * 109.47135 * 240.00496 * 14 12 10
18 18 C 1.53000 * 117.49600 * 250.88571 * 9 8 7
19 19 C 1.52995 * 60.00004 * 252.50963 * 18 9 8
20 20 C 1.50697 * 109.47233 * 239.99856 * 2 1 3
21 21 O 1.21272 * 120.00033 * 255.99427 * 20 2 1
22 22 N 1.34777 * 119.99916 * 75.99834 * 20 2 1
23 23 C 1.46927 * 120.63149 * 353.89445 * 22 20 2
24 24 C 1.53190 * 108.77920 * 126.41662 * 23 22 20
25 25 C 1.53039 * 109.31281 * 54.62873 * 24 23 22
26 26 C 1.53041 * 109.54153 * 298.63771 * 25 24 23
27 27 C 1.46925 * 120.62943 * 173.91417 * 22 20 2
28 28 H 1.09001 * 109.58669 * 113.80205 * 27 22 20
29 29 C 1.52992 * 109.58839 * 353.37297 * 27 22 20
30 30 H 1.08996 * 109.47131 * 64.04222 * 1 2 3
31 31 H 1.08995 * 109.47046 * 184.04618 * 1 2 3
32 32 H 1.09002 * 109.46759 * 304.04334 * 1 2 3
33 33 H 0.96997 * 119.99517 * 95.00152 * 4 2 1
34 34 H 0.96998 * 119.99826 * 359.97438 * 7 5 4
35 35 H 1.08999 * 109.47453 * 295.87843 * 8 7 5
36 36 H 1.08995 * 109.47671 * 55.88581 * 8 7 5
37 37 H 0.96995 * 120.00196 * 185.00197 * 13 12 10
38 38 H 1.08999 * 117.50216 * 359.97438 * 18 9 8
39 39 H 1.09000 * 117.49773 * 145.02145 * 18 9 8
40 40 H 1.08998 * 117.50310 * 252.51517 * 19 18 9
41 41 H 1.09006 * 117.51881 * 107.48357 * 19 18 9
42 42 H 1.08994 * 109.58602 * 6.62252 * 23 22 20
43 43 H 1.09006 * 109.58335 * 246.19913 * 23 22 20
44 44 H 1.09003 * 109.49113 * 294.68232 * 24 23 22
45 45 H 1.08999 * 109.52411 * 174.60430 * 24 23 22
46 46 H 1.08998 * 109.45865 * 178.61787 * 25 24 23
47 47 H 1.08997 * 109.45883 * 58.66195 * 25 24 23
48 48 H 1.09000 * 109.49441 * 181.31576 * 26 25 24
49 49 H 1.08994 * 109.49549 * 301.41324 * 26 25 24
50 50 H 1.08998 * 109.47657 * 308.35575 * 29 27 22
51 51 H 1.09006 * 109.47021 * 68.35357 * 29 27 22
52 52 H 1.09002 * 109.47399 * 188.35184 * 29 27 22
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 1 1.8934 1.0277 0.0000
4 7 2.0184 -0.6905 1.1962
5 6 2.1471 -0.0181 2.3572
6 8 1.8575 1.1614 2.4118
7 7 2.5969 -0.6533 3.4575
8 6 2.7362 0.0775 4.7195
9 6 3.1629 -0.8906 5.8250
10 6 4.1200 -1.9761 5.4046
11 1 3.7407 -2.9280 5.0634
12 6 5.4797 -1.7539 5.4554
13 7 5.9433 -0.6186 5.9305
14 14 6.6637 -3.0656 4.8495
15 1 5.8954 -4.2410 4.3666
16 1 7.4815 -2.5184 3.7373
17 1 7.5554 -3.4798 5.9624
18 6 2.1294 -1.2362 6.8989
19 6 3.3115 -0.3265 7.2394
20 6 2.0324 -0.7104 -1.2304
21 8 2.4742 -1.8364 -1.1426
22 7 1.9908 -0.0944 -2.4284
23 6 1.3384 1.2139 -2.5752
24 6 2.3265 2.1876 -3.2250
25 6 2.8377 1.5892 -4.5376
26 6 3.5707 0.2768 -4.2507
27 6 2.5966 -0.7185 -3.6126
28 1 1.8166 -0.9767 -4.3289
29 6 3.3532 -1.9814 -3.1962
30 1 -0.3633 0.4498 -0.9240
31 1 -0.3633 -1.0251 0.0725
32 1 -0.3633 0.5753 0.8516
33 1 2.2491 -1.6317 1.1526
34 1 2.8275 -1.5944 3.4140
35 1 3.4908 0.8560 4.6072
36 1 1.7815 0.5323 4.9835
37 1 6.8947 -0.4323 5.8996
38 1 1.1457 -0.7737 6.8182
39 1 2.1415 -2.2490 7.3016
40 1 4.1013 -0.7408 7.8659
41 1 3.1058 0.7344 7.3824
42 1 1.0472 1.5891 -1.5942
43 1 0.4558 1.1132 -3.2070
44 1 3.1663 2.3572 -2.5511
45 1 1.8254 3.1342 -3.4273
46 1 3.5222 2.2909 -5.0142
47 1 1.9949 1.3969 -5.2014
48 1 3.9546 -0.1368 -5.1832
49 1 4.3988 0.4646 -3.5672
50 1 4.0340 -1.7443 -2.3787
51 1 2.6419 -2.7396 -2.8684
52 1 3.9227 -2.3602 -4.0449
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)
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
ZINC000430716267.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 21:07:00
Heat of formation + Delta-G solvation = -36.777592 kcal
Electronic energy + Delta-G solvation = -30584.369365 eV
Core-core repulsion = 26584.842451 eV
Total energy + Delta-G solvation = -3999.526914 eV
No. of doubly occupied orbitals = 65
Molecular weight
(most abundant/longest-lived isotopes) = 337.215 amu
Computer time = 0.75 seconds
Orbital eigenvalues (eV)
-40.98419 -39.29516 -37.67886 -36.73106 -35.04394 -33.32921 -33.09654 -32.81877
-31.96788 -30.10727 -27.82976 -26.16096 -25.34632 -25.03443 -24.00137 -22.35124
-21.13445 -21.01011 -20.07111 -19.38774 -19.33662 -17.86646 -16.80067 -16.44571
-16.11466 -15.87925 -15.22106 -14.97604 -14.73960 -14.61311 -14.51122 -14.29435
-13.99638 -13.81942 -13.61241 -13.43684 -13.07646 -12.78941 -12.63412 -12.58160
-12.42021 -12.07936 -12.02716 -11.91611 -11.58720 -11.55028 -11.32704 -11.30647
-11.02483 -11.00463 -10.91145 -10.88557 -10.49808 -10.15355 -9.71529 -9.39047
-9.26133 -9.03301 -8.88642 -8.77903 -8.46251 -8.24510 -7.81771 -6.08846
-4.18828 2.40707 2.59797 3.25501 3.34025 3.35016 3.37255 3.82539
4.20252 4.35256 4.38967 4.47943 4.55349 4.69177 4.90347 4.92240
5.00054 5.07092 5.10964 5.13827 5.21347 5.28171 5.34178 5.38197
5.48044 5.51434 5.55303 5.61496 5.68911 5.71801 5.75909 5.90359
6.06120 6.09585 6.10610 6.16103 6.36836 6.48659 6.54227 6.59941
6.73966 6.77884 6.94447 7.15559 7.16936 7.32241 7.43926 7.54771
7.71713 7.79410 7.98844 8.35664 8.77549 8.84742 9.26684 9.49233
10.98601
Molecular weight = 337.22amu
Principal moments of inertia in cm(-1)
A = 0.013835 B = 0.002937 C = 0.002646
Principal moments of inertia in units of 10**(-40)*gram-cm**2
A = 2023.427188 B = 9530.657416 C =10579.536405
Net atomic charges, atomic populations, and dipole contributions
calculated with CM2
Atom NO. Type Charge No. of electrons
1 C -0.161 4.161
2 C 0.147 3.853
3 H 0.108 0.892
4 N -0.739 5.739
5 C 0.701 3.299
6 O -0.611 6.611
7 N -0.711 5.711
8 C 0.183 3.817
9 C 0.022 3.978
10 C -0.502 4.502
11 H 0.061 0.939
12 C 0.077 3.923
13 N -0.870 5.870
14 Si 0.887 3.113
15 H -0.271 1.271
16 H -0.284 1.284
17 H -0.284 1.284
18 C -0.212 4.212
19 C -0.142 4.142
20 C 0.516 3.484
21 O -0.524 6.524
22 N -0.608 5.608
23 C 0.100 3.900
24 C -0.139 4.139
25 C -0.120 4.120
26 C -0.133 4.133
27 C 0.145 3.855
28 H 0.070 0.930
29 C -0.140 4.140
30 H 0.066 0.934
31 H 0.063 0.937
32 H 0.077 0.923
33 H 0.404 0.596
34 H 0.404 0.596
35 H 0.057 0.943
36 H 0.039 0.961
37 H 0.261 0.739
38 H 0.064 0.936
39 H 0.076 0.924
40 H 0.087 0.913
41 H 0.063 0.937
42 H 0.093 0.907
43 H 0.072 0.928
44 H 0.070 0.930
45 H 0.077 0.923
46 H 0.066 0.934
47 H 0.063 0.937
48 H 0.074 0.926
49 H 0.068 0.932
50 H 0.068 0.932
51 H 0.076 0.924
52 H 0.044 0.956
For the charges calculated by CM2:
Dipole moment (debyes) X Y Z Total
from point charges -9.062 3.329 -20.828 22.956
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 -0.220 4.220
2 C 0.036 3.964
3 H 0.125 0.875
4 N -0.397 5.397
5 C 0.401 3.599
6 O -0.492 6.492
7 N -0.365 5.365
8 C 0.059 3.941
9 C 0.021 3.979
10 C -0.539 4.539
11 H 0.079 0.921
12 C -0.128 4.128
13 N -0.506 5.506
14 Si 0.714 3.286
15 H -0.196 1.196
16 H -0.210 1.210
17 H -0.210 1.210
18 C -0.250 4.250
19 C -0.180 4.180
20 C 0.304 3.696
21 O -0.400 6.400
22 N -0.343 5.343
23 C -0.023 4.023
24 C -0.177 4.177
25 C -0.157 4.157
26 C -0.172 4.172
27 C 0.042 3.958
28 H 0.088 0.912
29 C -0.197 4.197
30 H 0.085 0.915
31 H 0.082 0.918
32 H 0.096 0.904
33 H 0.240 0.760
34 H 0.240 0.760
35 H 0.075 0.925
36 H 0.057 0.943
37 H 0.070 0.930
38 H 0.083 0.917
39 H 0.095 0.905
40 H 0.106 0.894
41 H 0.081 0.919
42 H 0.112 0.888
43 H 0.090 0.910
44 H 0.089 0.911
45 H 0.096 0.904
46 H 0.084 0.916
47 H 0.082 0.918
48 H 0.093 0.907
49 H 0.087 0.913
50 H 0.087 0.913
51 H 0.095 0.905
52 H 0.062 0.938
Dipole moment (debyes) X Y Z Total
from point charges -8.882 3.863 -20.573 22.739
hybrid contribution 1.051 -1.296 -0.418 1.720
sum -7.831 2.567 -20.991 22.551
Atomic orbital electron populations
1.22227 0.93364 1.03291 1.03117 1.20477 0.95209 0.97584 0.83084
0.87470 1.44840 1.72777 1.14323 1.07801 1.15967 0.78683 0.84930
0.80355 1.90833 1.58820 1.14543 1.84956 1.45192 1.67945 1.14763
1.08577 1.20715 0.97964 0.93656 0.81756 1.19054 0.95645 0.96623
0.86556 1.20344 0.89738 0.98397 1.45434 0.92096 1.24976 0.98195
0.95520 0.94074 1.70013 1.13853 1.23468 1.43272 0.86629 0.81314
0.82099 0.78557 1.19567 1.20961 1.21004 1.23111 0.93054 0.99768
1.09025 1.22446 0.98236 0.95823 1.01459 1.20751 0.78028 0.86490
0.84380 1.90746 1.45614 1.18278 1.85384 1.48087 1.57231 1.20630
1.08303 1.21939 0.95300 0.82499 1.02533 1.21950 0.99863 0.98402
0.97467 1.21516 1.00229 0.96829 0.97145 1.22036 0.98514 0.95522
1.01095 1.21283 0.94913 0.93342 0.86237 0.91172 1.22199 1.00951
0.96290 1.00260 0.91535 0.91790 0.90368 0.75966 0.75953 0.92457
0.94263 0.92955 0.91722 0.90496 0.89423 0.91878 0.88843 0.90951
0.91107 0.90416 0.91571 0.91781 0.90749 0.91286 0.91280 0.90505
0.93766
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 -0.16 -1.79 9.10 37.16 0.34 -1.46 16
2 C 0.15 1.96 2.12 -69.08 -0.15 1.82 16
3 H 0.11 1.50 6.53 -51.92 -0.34 1.16 16
4 N -0.74 -12.02 5.03 -59.81 -0.30 -12.33 16
5 C 0.70 13.99 8.53 -86.92 -0.74 13.25 16
6 O -0.61 -13.72 16.01 5.29 0.08 -13.64 16
7 N -0.71 -14.89 5.38 -65.23 -0.35 -15.24 16
8 C 0.18 4.21 5.78 -4.04 -0.02 4.19 16
9 C 0.02 0.52 1.91 -155.66 -0.30 0.23 16
10 C -0.50 -12.85 7.28 -34.44 -0.25 -13.10 16
11 H 0.06 1.54 7.81 -52.49 -0.41 1.13 16
12 C 0.08 2.03 5.42 -17.82 -0.10 1.94 16
13 N -0.87 -24.08 12.39 55.43 0.69 -23.40 16
14 Si 0.89 20.61 29.54 -169.99 -5.02 15.59 16
15 H -0.27 -6.18 7.11 56.52 0.40 -5.78 16
16 H -0.28 -6.68 7.11 56.52 0.40 -6.28 16
17 H -0.28 -6.64 7.11 56.52 0.40 -6.24 16
18 C -0.21 -4.56 9.88 -26.73 -0.26 -4.82 16
19 C -0.14 -3.30 9.01 -26.73 -0.24 -3.54 16
20 C 0.52 6.65 6.78 -10.99 -0.07 6.58 16
21 O -0.52 -8.03 11.46 5.56 0.06 -7.97 16
22 N -0.61 -6.08 2.97 -165.23 -0.49 -6.57 16
23 C 0.10 0.74 5.36 -3.71 -0.02 0.72 16
24 C -0.14 -0.93 6.08 -26.61 -0.16 -1.10 16
25 C -0.12 -0.75 5.88 -26.69 -0.16 -0.91 16
26 C -0.13 -1.02 5.37 -26.61 -0.14 -1.16 16
27 C 0.14 1.33 3.49 -67.60 -0.24 1.09 16
28 H 0.07 0.56 8.14 -51.93 -0.42 0.14 16
29 C -0.14 -1.54 7.62 37.15 0.28 -1.26 16
30 H 0.07 0.55 6.27 -51.93 -0.33 0.23 16
31 H 0.06 0.72 8.14 -51.93 -0.42 0.30 16
32 H 0.08 0.99 8.14 -51.93 -0.42 0.56 16
33 H 0.40 6.39 7.73 -40.82 -0.32 6.07 16
34 H 0.40 8.23 7.24 -40.82 -0.30 7.94 16
35 H 0.06 1.46 8.14 -51.93 -0.42 1.04 16
36 H 0.04 0.87 7.92 -51.93 -0.41 0.46 16
37 H 0.26 6.95 8.32 -40.82 -0.34 6.61 16
38 H 0.06 1.27 8.06 -51.93 -0.42 0.85 16
39 H 0.08 1.63 8.14 -51.93 -0.42 1.21 16
40 H 0.09 2.20 8.01 -51.93 -0.42 1.78 16
41 H 0.06 1.39 8.14 -51.93 -0.42 0.97 16
42 H 0.09 0.70 4.78 -51.93 -0.25 0.45 16
43 H 0.07 0.42 8.14 -51.93 -0.42 -0.01 16
44 H 0.07 0.58 8.14 -51.93 -0.42 0.16 16
45 H 0.08 0.40 8.14 -51.93 -0.42 -0.02 16
46 H 0.07 0.38 8.14 -51.93 -0.42 -0.04 16
47 H 0.06 0.35 8.14 -51.93 -0.42 -0.07 16
48 H 0.07 0.48 8.14 -51.93 -0.42 0.05 16
49 H 0.07 0.63 8.14 -51.93 -0.42 0.21 16
50 H 0.07 0.94 6.78 -51.93 -0.35 0.58 16
51 H 0.08 0.97 6.72 -51.93 -0.35 0.62 16
52 H 0.04 0.41 8.14 -51.93 -0.42 -0.02 16
LS Contribution 403.87 15.07 6.09 6.09
Total: -1.00 -30.53 403.87 -10.41 -40.94
By element:
Atomic # 1 Polarization: 23.01 SS G_CDS: -8.93 Total: 14.07 kcal
Atomic # 6 Polarization: 4.69 SS G_CDS: -2.23 Total: 2.46 kcal
Atomic # 7 Polarization: -57.08 SS G_CDS: -0.46 Total: -57.54 kcal
Atomic # 8 Polarization: -21.75 SS G_CDS: 0.15 Total: -21.60 kcal
Atomic # 14 Polarization: 20.61 SS G_CDS: -5.02 Total: 15.59 kcal
Total LS contribution 6.09 Total: 6.09 kcal
Total: -30.53 -10.41 -40.94 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.
ZINC000430716267.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 4.160 kcal
(2) G-P(sol) polarization free energy of solvation -30.529 kcal
(3) G-ENP(sol) elect.-nuc.-pol. free energy of system -26.368 kcal
(4) G-CDS(sol) cavity-dispersion-solvent structure free energy -10.409 kcal
(5) G-P-CDS(sol) = G-P(sol) + G-CDS(sol) = (2) + (4) -40.938 kcal
(6) G-S(sol) free energy of system = (1) + (5) -36.778 kcal
1SCF WAS SPECIFIED, SO GEOMETRY OPTIMIZATION WAS NOT USED
Total computer time = 0.75 seconds