WebMO Job Summary

112025: C13H18O2 (S)-ibuprofen, Optimize + Vib Freq - Gaussian

Calculated Quantities

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Overview

Quantity Value
Route #N B3LYP/6-31G(d) OPT FREQ Geom=Connectivity
Stoichiometry C13H18O2
Symmetry C1
Basis 6-31G(d)
RB3LYP Energy -656.704410555 Hartree
ZPE 0.285976 Hartree
Conditions 298.150K, 1.00000 atm
Internal Energy -656.402766 Hartree
Enthalpy -656.401822 Hartree
Free Energy -656.462948 Hartree
Cv 58.526 cal/mol-K
Entropy 128.651 cal/mol-K
Dipole Moment 1.5678 Debye
Server batch (114095)
CPU time 11072.3 sec

Geometry Sequence Energies

Step Energy  
0 -656.576649269  
1 -656.656222233  
2 -656.651321312  
3 -656.660376234  
4 -656.688252388  
5 -656.690438239  
6 -656.694519636  
7 -656.693703764  
8 -656.695633739  
9 -656.693342964  
10 -656.696217064  
11 -656.697635861  
12 -656.699251693  
13 -656.701117195  
14 -656.702161040  
15 -656.702196020  
16 -656.701936951  
17 -656.702815094  
18 -656.703359106  
19 -656.703926935  
20 -656.704153584  
21 -656.704341300  
22 -656.704399594  
23 -656.704403253  
24 -656.704408844  
25 -656.704410239  
26 -656.704410566  
27 -656.704410599  
28 -656.704410555  
29 -656.704410555  
30 -656.704410555  
Animation speed  
Loop  

Rotational Constants

Constant Frequency (GHz) Frequency (cm-1)
a 1.35723 0.04527231969
b 0.25435 0.00848420276
c 0.24226 0.00808092377

Partial Charges

Atom Symbol Charge
1 C -0.237427  
2 C -0.436592  
3 H 0.150585  
4 H 0.172691  
5 H 0.151907  
6 C 0.155011  
7 C -0.186261  
8 C -0.181258  
9 C 0.178363  
10 C -0.187813  
11 C -0.179815  
12 H 0.152009  
13 H 0.126432  
14 C -0.344730  
15 C -0.064549  
16 C -0.440798  
17 H 0.142414  
18 H 0.138956  
19 H 0.139721  
20 C -0.446012  
21 H 0.140155  
22 H 0.134907  
23 H 0.155867  
24 H 0.126749  
25 H 0.140046  
26 H 0.135378  
27 H 0.123658  
28 H 0.125961  
29 C 0.589492  
30 O -0.569862  
31 H 0.407074  
32 O -0.469194  
33 H 0.156937  

Vibrational Modes

Mode Symmetry Frequency (cm-1) IR (Raman) Intensity Actions
1 A 28.6634 0.0963
2 A 37.8782 1.3091
3 A 48.7114 0.6878
4 A 56.3217 0.4051
5 A 68.2630 0.1893
6 A 112.0060 0.1509
7 A 156.5772 0.1335
8 A 196.7154 0.3917
9 A 224.1776 0.3152
10 A 229.0752 0.3704
11 A 244.7743 0.1783
12 A 253.1918 0.7888
13 A 297.7052 0.9088
14 A 315.5134 0.4219
15 A 345.0719 1.0992
16 A 381.7645 0.5067
17 A 406.6465 0.1746
18 A 420.7671 0.0362
19 A 423.0635 1.5571
20 A 445.3249 7.3914
21 A 556.8292 4.4078
22 A 566.2626 27.4397
23 A 630.9090 35.0920
24 A 653.0712 40.4545
25 A 666.6212 27.9492
26 A 723.0107 41.8003
27 A 748.5360 15.1829
28 A 807.3822 6.3083
29 A 818.3813 13.9131
30 A 838.9103 0.2228
31 A 858.7096 4.7721
32 A 859.4963 1.6432
33 A 871.8626 17.0235
34 A 900.9236 1.6077
35 A 940.8217 2.3939
36 A 958.9873 0.7246
37 A 964.2772 0.0628
38 A 976.1919 0.0621
39 A 978.7952 0.2079
40 A 1014.6754 3.0022
41 A 1041.7371 4.4508
42 A 1092.2020 33.6707
43 A 1104.7752 15.6853
44 A 1115.5921 21.0483
45 A 1145.4150 3.2478
46 A 1158.1698 14.2915
47 A 1180.3381 206.6172
48 A 1202.3130 11.9134
49 A 1218.6696 15.7502
50 A 1226.4341 8.7780
51 A 1236.8453 3.2143
52 A 1259.2485 2.1224
53 A 1297.4775 3.9023
54 A 1325.3402 2.8989
55 A 1331.3909 4.0269
56 A 1360.5290 1.8379
57 A 1376.3165 0.5625
58 A 1387.4752 1.6387
59 A 1390.6714 2.4026
60 A 1416.9803 50.4527
61 A 1429.6191 4.7140
62 A 1436.5264 7.3418
63 A 1449.0080 4.3606
64 A 1470.6713 10.2789
65 A 1511.5780 0.7397
66 A 1518.9044 1.1397
67 A 1521.2723 3.8141
68 A 1526.1868 1.1408
69 A 1526.5933 9.3980
70 A 1534.2604 3.7082
71 A 1539.4790 8.7976
72 A 1561.1310 22.2181
73 A 1628.4766 0.0081
74 A 1671.1195 0.5901
75 A 1835.4286 230.4367
76 A 3017.1019 6.6772
77 A 3028.5743 28.0297
78 A 3035.5639 35.0317
79 A 3041.9305 37.5665
80 A 3062.4258 27.9386
81 A 3067.7054 20.1203
82 A 3083.0849 9.3289
83 A 3097.9333 8.2656
84 A 3104.0685 56.1749
85 A 3109.2427 49.7852
86 A 3124.0064 35.9418
87 A 3130.3318 29.5851
88 A 3151.9207 13.6146
89 A 3170.4217 13.9017
90 A 3178.6757 16.2332
91 A 3188.3258 21.1614
92 A 3203.8351 5.0420
93 A 3678.9230 45.6228
Frequency Scale Factor
Normal Mode Amplitude
Animation Speed
IR Spectrum  
Peak Width (cm-1)

Quote

NECESSARY EVIL: ONE WE LIKE TOO MUCH TO RELINQUISH.