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All results from a given calculation for C6H5COOH (benzoic acid)

using model chemistry: MP2/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-73.882074
Energy at 298.15K-73.888854
HF Energy-73.119716
Nuclear repulsion energy200.255747
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/CEP-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3642 3519 59.49      
2 A' 3219 3110 6.42      
3 A' 3201 3093 21.17      
4 A' 3188 3080 33.17      
5 A' 3167 3060 20.26      
6 A' 3148 3042 0.37      
7 A' 1662 1606 176.79      
8 A' 1614 1559 14.43      
9 A' 1593 1539 22.98      
10 A' 1500 1450 11.75      
11 A' 1459 1409 14.97      
12 A' 1398 1351 2.51      
13 A' 1352 1307 1.70      
14 A' 1340 1295 93.62      
15 A' 1213 1172 5.57      
16 A' 1192 1152 126.86      
17 A' 1192 1152 14.05      
18 A' 1095 1058 4.54      
19 A' 1038 1003 49.76      
20 A' 1013 979 179.61      
21 A' 989 956 37.41      
22 A' 742 717 1.15      
23 A' 615 594 0.26      
24 A' 596 576 40.42      
25 A' 478 462 6.95      
26 A' 369 356 9.81      
27 A' 208 201 0.85      
28 A" 922 891 0.21      
29 A" 906 875 4.99      
30 A" 890 860 0.31      
31 A" 848 819 0.04      
32 A" 768 742 40.89      
33 A" 698 674 136.35      
34 A" 625 603 45.40      
35 A" 586 566 106.55      
36 A" 422 407 10.51      
37 A" 399 386 0.56      
38 A" 164 159 0.92      
39 A" 58 56 0.46      

Unscaled Zero Point Vibrational Energy (zpe) 24752.4 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 23918.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/CEP-31G
ABC
0.12016 0.03864 0.02924

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.227 0.000
C2 1.351 -0.284 0.000
C3 1.566 -1.705 0.000
C4 0.442 -2.609 0.000
C5 -0.902 -2.088 0.000
C6 -1.133 -0.668 0.000
C7 -0.189 1.730 0.000
O8 0.733 2.606 0.000
O9 -1.565 2.107 0.000
H10 2.193 0.420 0.000
H11 2.592 -2.102 0.000
H12 0.611 -3.697 0.000
H13 -1.759 -2.778 0.000
H14 -2.150 -0.260 0.000
H15 -1.637 3.096 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 O8 O9 H10 H11 H12 H13 H14 H15
C11.44412.48702.87072.48461.44401.51532.48972.44572.20203.48493.97133.48252.20443.3034
C21.44411.43742.49672.88642.51332.53562.95563.77011.09812.20163.49243.98693.50084.5114
C32.48701.43741.44262.49812.89143.85804.39134.93272.21581.10042.20923.49443.98745.7717
C42.87072.49671.44261.44222.49994.38555.22395.12543.49932.20931.10062.20813.49886.0726
C52.48462.88642.49811.44221.43833.88434.97094.24663.98433.49492.20891.10052.21355.2358
C61.44402.51332.89142.49991.43832.57763.76882.80843.50003.99183.49492.20111.09613.7979
C71.51532.53563.85804.38553.88432.57761.27191.42572.71944.73555.48614.77432.79361.9904
O82.48972.95564.39135.22394.97093.76881.27192.35092.62945.06236.30465.93354.06502.4201
O92.44573.77014.93275.12544.24662.80841.42572.35094.11925.91566.19814.88902.43770.9919
H102.20201.09812.21583.49933.98433.50002.71942.62944.11922.55344.41085.08484.39644.6729
H113.48492.20161.10042.20933.49493.99184.73555.06235.91562.55342.54384.40405.08786.7015
H123.97133.49242.20921.10062.20893.49495.48616.30466.19814.41082.54382.54204.40897.1554
H133.48253.98693.49442.20811.10052.20114.77435.93354.88905.08484.40402.54202.54895.8757
H142.20443.50083.98743.49882.21351.09612.79364.06502.43774.39645.08784.40892.54893.3945
H153.30344.51145.77176.07265.23583.79791.99042.42010.99194.67296.70157.15545.87573.3945

picture of benzoic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 119.338 C1 C2 H10 119.410
C1 C6 C5 119.089 C1 C6 H14 119.793
C1 C7 O8 126.353 C1 C7 O9 112.489
C2 C1 C6 120.968 C2 C1 C7 117.899
C2 C3 C4 120.203 C2 C3 H11 119.763
C3 C2 H10 121.252 C3 C4 C5 119.979
C3 C4 H12 120.012 C4 C3 H11 120.033
C4 C5 C6 120.423 C4 C5 H13 119.944
C5 C4 H12 120.009 C5 C6 H14 121.117
C6 C1 C7 121.134 C6 C5 H13 119.634
C7 O9 H15 109.518 O8 C7 O9 121.158
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability