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

using model chemistry: MP2/CEP-121G

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-121G
 hartrees
Energy at 0K-73.988260
Energy at 298.15K-73.995125
HF Energy-73.140295
Nuclear repulsion energy201.608280
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-121G
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 3584 3498 54.15      
2 A 3177 3100 5.66      
3 A 3161 3085 20.35      
4 A 3150 3074 24.55      
5 A 3137 3062 16.74      
6 A 3125 3050 0.31      
7 A 1651 1611 186.29      
8 A 1603 1564 14.95      
9 A 1580 1542 23.36      
10 A 1502 1466 11.21      
11 A 1460 1425 12.22      
12 A 1367 1334 3.22      
13 A 1353 1320 3.62      
14 A 1333 1301 84.51      
15 A 1213 1184 1.74      
16 A 1191 1162 0.29      
17 A 1183 1155 133.90      
18 A 1092 1065 5.78      
19 A 1080 1054 2.43      
20 A 1033 1008 19.69      
21 A 1013 989 200.63      
22 A 981 958 58.08      
23 A 946 923 3.96      
24 A 903 881 4.45      
25 A 831 811 0.07      
26 A 771 752 14.60      
27 A 738 721 1.57      
28 A 693 676 31.84      
29 A 667 651 123.26      
30 A 622 607 0.38      
31 A 596 582 39.04      
32 A 576 562 119.75      
33 A 480 468 7.16      
34 A 407 397 9.35      
35 A 388 378 0.53      
36 A 368 360 9.70      
37 A 210 205 0.81      
38 A 157 154 0.81      
39 A 50 49 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 24684.2 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 24091.8 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-121G
ABC
0.12192 0.03915 0.02964

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.220 0.041 0.021
C2 -0.531 1.258 -0.013
C3 -1.954 1.207 0.021
C4 -2.627 -0.055 -0.021
C5 -1.869 -1.267 0.015
C6 -0.444 -1.225 -0.019
C7 1.725 0.139 0.002
O8 2.403 1.207 -0.010
O9 2.351 -1.138 0.005
H10 -0.000 2.214 0.018
H11 -2.531 2.136 -0.006
H12 -3.719 -0.093 0.005
H13 -2.382 -2.232 -0.017
H14 0.142 -2.144 0.010
H15 3.333 -1.021 -0.003

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 O8 O9 H10 H11 H12 H13 H14 H15
C11.43062.46722.84872.46521.43051.50762.47502.43602.18363.45793.94193.45592.18713.2892
C21.43061.42502.47322.85802.48492.51812.93473.74861.09302.18433.46303.95133.46894.4862
C32.46721.42501.42992.47482.86273.83094.35804.90302.19811.09382.19173.46583.95305.7377
C42.84872.47321.42991.42942.47624.35545.18585.09463.47032.19251.09382.19133.46916.0374
C52.46522.85802.47481.42941.42613.85894.93714.22283.95033.46612.19111.09392.19495.2081
C61.43052.48492.86272.47621.42612.56183.74472.79713.46733.95583.46542.18411.09113.7827
C71.50762.51813.83094.35543.85892.56181.26581.42242.69864.70115.44884.74192.77761.9831
O82.47502.93474.35805.18584.93713.74471.26582.34572.60655.02136.25925.89314.04272.4144
O92.43603.74864.90305.09464.22282.79711.42242.34574.09495.87876.16024.85832.42740.9884
H102.18361.09302.19813.47033.95033.46732.69862.60654.09492.53204.37595.04384.36054.6453
H113.45792.18431.09382.19253.46613.95584.70115.02135.87872.53202.52524.37065.04656.6600
H123.94193.46302.19171.09382.19113.46545.44886.25926.16024.37592.52522.52344.37307.1132
H133.45593.95133.46582.19131.09392.18414.74195.89314.85835.04384.37062.52342.52615.8419
H142.18713.46893.95303.46912.19491.09112.77764.04272.42744.36055.04654.37302.52613.3824
H153.28924.48625.73776.03745.20813.78271.98312.41440.98844.64536.66007.11325.84193.3824

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 119.541 C1 C2 H10 119.224
C1 C6 C5 119.301 C1 C6 H14 119.704
C1 C7 O8 126.137 C1 C7 O9 112.449
C2 C1 C6 120.569 C2 C1 C7 117.948
C2 C3 C4 120.063 C2 C3 H11 119.698
C3 C2 H10 121.051 C3 C4 C5 119.881
C3 C4 H12 119.960 C4 C3 H11 120.044
C4 C5 C6 120.261 C4 C5 H13 119.971
C5 C4 H12 119.954 C5 C6 H14 120.797
C6 C1 C7 121.347 C6 C5 H13 119.569
C7 O9 H15 109.359 O8 C7 O9 121.413
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability