return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2=FULL/3-21G*

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=FULL/3-21G*
 hartrees
Energy at 0K-416.851336
Energy at 298.15K-416.858404
HF Energy-415.982050
Nuclear repulsion energy401.139380
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=FULL/3-21G*
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' 3517 3334 36.16      
2 A' 3241 3072 1.29      
3 A' 3222 3054 10.65      
4 A' 3212 3045 8.26      
5 A' 3201 3035 7.23      
6 A' 3191 3025 0.09      
7 A' 1735 1644 122.89      
8 A' 1613 1529 3.32      
9 A' 1591 1508 7.07      
10 A' 1536 1456 4.28      
11 A' 1500 1422 13.24      
12 A' 1403 1330 79.07      
13 A' 1384 1312 8.24      
14 A' 1334 1264 1.62      
15 A' 1246 1181 0.67      
16 A' 1240 1175 0.09      
17 A' 1203 1141 131.03      
18 A' 1115 1057 14.52      
19 A' 1059 1004 52.60      
20 A' 1056 1001 168.91      
21 A' 1016 963 17.23      
22 A' 770 730 3.63      
23 A' 656 622 0.32      
24 A' 637 604 47.35      
25 A' 497 471 6.30      
26 A' 389 368 7.88      
27 A' 218 207 0.78      
28 A" 944 895 0.18      
29 A" 938 890 0.00      
30 A" 910 863 2.76      
31 A" 856 811 0.03      
32 A" 797 756 2.17      
33 A" 717 680 148.24      
34 A" 670 635 22.40      
35 A" 592 562 95.98      
36 A" 429 406 9.26      
37 A" 419 398 5.09      
38 A" 163 154 1.86      
39 A" 85 81 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 25149.4 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 23841.7 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=FULL/3-21G*
ABC
0.12571 0.04050 0.03063

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.220 0.000
C2 1.296 -0.325 0.000
C3 1.466 -1.717 0.000
C4 0.340 -2.562 0.000
C5 -0.955 -2.009 0.000
C6 -1.130 -0.616 0.000
C7 -0.119 1.705 0.000
O8 0.822 2.512 0.000
O9 -1.454 2.111 0.000
H10 2.146 0.352 0.000
H11 2.465 -2.142 0.000
H12 0.470 -3.641 0.000
H13 -1.823 -2.663 0.000
H14 -2.120 -0.174 0.000
H15 -1.465 3.106 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 O8 O9 H10 H11 H12 H13 H14 H15
C11.40562.42872.80272.42511.40581.49032.43522.38572.15053.41433.88943.41082.15653.2368
C21.40561.40252.43322.81132.44342.47452.87593.67371.08682.16133.41773.89803.41954.4037
C32.42871.40251.40782.43792.81943.77134.27754.81442.17781.08662.16653.42193.90385.6436
C42.80272.43321.40781.40762.43884.29225.09715.00573.42862.16671.08672.16513.42885.9488
C52.42512.81132.43791.40761.40423.80764.85814.15053.89773.42272.16621.08672.17445.1410
C61.40582.44342.81942.43881.40422.53223.68752.74633.41663.90603.42212.16081.08453.7374
C71.49032.47453.77134.29223.80762.53221.23971.39562.63914.63515.37894.68892.74521.9426
O82.43522.87594.27755.09714.85813.68751.23972.31192.53374.93576.16325.81183.98412.3632
O92.38573.67374.81445.00574.15052.74631.39562.31194.00765.78406.06544.78802.37970.9954
H102.15051.08682.17783.42863.89773.41662.63912.53374.00762.51434.33054.98444.29904.5419
H113.41432.16131.08662.16673.42273.90604.63514.93575.78402.51432.49574.31984.99046.5569
H123.88943.41772.16651.08672.16623.42215.37896.16326.06544.33052.49572.49294.32817.0193
H133.41083.89803.42192.16511.08672.16084.68895.81184.78804.98444.31982.49292.50695.7802
H142.15653.41953.90383.42882.17441.08452.74523.98412.37974.29904.99044.32812.50693.3448
H153.23684.40375.64365.94885.14103.73741.94262.36320.99544.54196.55697.01935.78023.3448

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 119.742 C1 C2 H10 118.713
C1 C6 C5 119.317 C1 C6 H14 119.432
C1 C7 O8 126.005 C1 C7 O9 111.472
C2 C1 C6 120.715 C2 C1 C7 117.375
C2 C3 C4 119.953 C2 C3 H11 119.994
C3 C2 H10 121.544 C3 C4 C5 119.973
C3 C4 H12 120.023 C4 C3 H11 120.052
C4 C5 C6 120.299 C4 C5 H13 119.907
C5 C4 H12 120.004 C5 C6 H14 121.251
C6 C1 C7 121.910 C6 C5 H13 119.794
C7 O9 H15 107.490 O8 C7 O9 122.522
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability