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

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-416.835747
Energy at 298.15K-416.842810
HF Energy-415.981932
Nuclear repulsion energy401.072463
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 MP2/3-21G*
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' 3516 3345 36.06      
2 A' 3240 3083 1.30      
3 A' 3221 3064 10.72      
4 A' 3211 3055 8.34      
5 A' 3201 3045 7.27      
6 A' 3190 3035 0.09      
7 A' 1734 1650 122.98      
8 A' 1613 1534 3.31      
9 A' 1590 1513 7.06      
10 A' 1536 1461 4.27      
11 A' 1500 1427 13.19      
12 A' 1403 1335 78.56      
13 A' 1384 1317 8.28      
14 A' 1333 1268 1.63      
15 A' 1246 1185 0.67      
16 A' 1239 1179 0.09      
17 A' 1203 1145 131.32      
18 A' 1114 1060 14.48      
19 A' 1058 1007 41.30      
20 A' 1056 1005 180.18      
21 A' 1015 966 17.48      
22 A' 770 733 3.61      
23 A' 656 624 0.32      
24 A' 637 606 47.34      
25 A' 497 473 6.29      
26 A' 388 370 7.87      
27 A' 218 208 0.78      
28 A" 942 896 0.18      
29 A" 937 892 0.00      
30 A" 909 865 2.71      
31 A" 855 813 0.03      
32 A" 796 757 2.07      
33 A" 716 681 148.64      
34 A" 669 637 22.42      
35 A" 592 563 95.77      
36 A" 428 407 8.92      
37 A" 419 399 5.35      
38 A" 162 155 1.87      
39 A" 85 81 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 25140.7 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 23916.4 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 MP2/3-21G*
ABC
0.12567 0.04049 0.03062

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

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 1.465 -1.717 0.000
C4 0.339 -2.563 0.000
C5 -0.955 -2.010 0.000
C6 -1.131 -0.616 0.000
C7 -0.119 1.706 0.000
O8 0.823 2.512 0.000
O9 -1.454 2.112 0.000
H10 2.147 0.351 0.000
H11 2.465 -2.143 0.000
H12 0.469 -3.642 0.000
H13 -1.824 -2.663 0.000
H14 -2.121 -0.173 0.000
H15 -1.464 3.107 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 O8 O9 H10 H11 H12 H13 H14 H15
C11.40592.42922.80322.42551.40611.49072.43562.38602.15093.41493.89003.41132.15703.2372
C21.40591.40282.43362.81182.44402.47502.87643.67431.08692.16163.41823.89863.42024.4043
C32.42921.40281.40802.43832.82003.77214.27824.81522.17811.08672.16683.42243.90455.6444
C42.80322.43361.40801.40792.43924.29305.09795.00653.42912.16701.08682.16543.42935.9497
C52.42552.81182.43831.40791.40453.80844.85894.15123.89843.42322.16651.08682.17475.1418
C61.40612.44402.82002.43921.40452.53283.68822.74673.41723.90673.42262.16111.08463.7380
C71.49072.47503.77214.29303.80842.53281.23981.39582.63964.63595.37984.68982.74601.9427
O82.43562.87644.27825.09794.85893.68821.23982.31232.53424.93656.16415.81283.98492.3635
O92.38603.67434.81525.00654.15122.74671.39582.31234.00835.78496.06634.78882.38030.9955
H102.15091.08692.17813.42913.89843.41722.63962.53424.00832.51464.33114.98524.29984.5426
H113.41492.16161.08672.16703.42323.90674.63594.93655.78492.51462.49604.32044.99116.5579
H123.89003.41822.16681.08682.16653.42265.37986.16416.06634.33112.49602.49324.32877.0203
H133.41133.89863.42242.16541.08682.16114.68985.81284.78884.98524.32042.49322.50725.7811
H142.15703.42023.90453.42932.17471.08462.74603.98492.38034.29984.99114.32872.50723.3455
H153.23724.40435.64445.94975.14183.73801.94272.36350.99554.54266.55797.02035.78113.3455

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 119.739 C1 C2 H10 118.719
C1 C6 C5 119.312 C1 C6 H14 119.439
C1 C7 O8 126.007 C1 C7 O9 111.463
C2 C1 C6 120.718 C2 C1 C7 117.369
C2 C3 C4 119.955 C2 C3 H11 119.994
C3 C2 H10 121.542 C3 C4 C5 119.975
C3 C4 H12 120.023 C4 C3 H11 120.051
C4 C5 C6 120.302 C4 C5 H13 119.905
C5 C4 H12 120.003 C5 C6 H14 121.248
C6 C1 C7 121.913 C6 C5 H13 119.794
C7 O9 H15 107.481 O8 C7 O9 122.530
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability