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All results from a given calculation for C4H9NO (Butanamide)

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 C1 1A
Energy calculated at MP2/CEP-31G*
 hartrees
Energy at 0K-53.402325
Energy at 298.15K-53.412792
HF Energy-52.585164
Nuclear repulsion energy132.456428
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 3741 3552 34.80      
2 A 3599 3417 43.45      
3 A 3192 3030 63.28      
4 A 3179 3018 39.66      
5 A 3168 3008 6.25      
6 A 3150 2990 16.85      
7 A 3112 2955 24.66      
8 A 3085 2929 19.68      
9 A 3079 2924 32.12      
10 A 1782 1692 282.65      
11 A 1649 1565 97.46      
12 A 1532 1455 8.76      
13 A 1530 1452 8.01      
14 A 1519 1442 2.07      
15 A 1501 1425 11.11      
16 A 1455 1381 45.98      
17 A 1442 1369 22.95      
18 A 1378 1309 31.95      
19 A 1348 1280 33.33      
20 A 1282 1217 22.89      
21 A 1275 1210 36.37      
22 A 1158 1099 1.35      
23 A 1139 1081 2.82      
24 A 1093 1038 1.05      
25 A 1074 1020 6.76      
26 A 946 898 4.29      
27 A 895 850 0.59      
28 A 872 828 1.07      
29 A 755 716 7.34      
30 A 663 630 6.15      
31 A 612 581 41.58      
32 A 516 490 22.44      
33 A 424 402 7.40      
34 A 369 350 249.13      
35 A 340 323 4.58      
36 A 245 233 0.17      
37 A 184 175 8.47      
38 A 98 93 0.86      
39 A 19 18 4.24      

Unscaled Zero Point Vibrational Energy (zpe) 29199.1 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 27721.6 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
0.27485 0.06015 0.05196

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.724 -0.206 0.005
H2 -2.894 -0.290 1.094
H3 -3.521 0.433 -0.416
H4 -2.827 -1.215 -0.434
C5 -1.329 0.389 -0.288
H6 -1.179 0.486 -1.379
H7 -1.240 1.401 0.142
C8 -0.205 -0.493 0.296
H9 -0.245 -1.509 -0.140
H10 -0.344 -0.594 1.390
N11 2.194 -0.780 -0.234
H12 3.145 -0.416 -0.181
H13 2.065 -1.766 -0.017
C14 1.183 0.127 0.073
O15 1.395 1.351 0.128

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 C8 H9 H10 N11 H12 H13 C14 O15
C11.10571.10451.10561.54482.18692.19182.55262.80492.78104.95785.87655.03683.92194.4056
H21.10571.78841.78822.19563.10822.55022.81283.16662.58495.28186.17405.29184.22364.6932
H31.10451.78841.78832.19602.53252.53973.51583.81833.79585.84516.72406.01594.73865.0303
H41.10561.78821.78832.19962.54993.11352.81622.61543.14325.04416.03094.94034.25884.9727
C51.54482.19562.19602.19961.10561.10291.54352.19072.17953.71244.54744.02892.55082.9187
H62.18693.10822.53252.54991.10561.77542.17052.52723.08683.78004.57664.17642.79483.1052
H72.19182.55022.53973.11351.10291.77542.16403.08822.51794.08544.75774.57962.73792.6355
C82.55262.81283.51582.81621.54352.17052.16401.10621.10762.47363.38472.62061.53612.4473
H92.80493.16663.81832.61542.19072.52723.08821.10621.78552.54763.56242.32722.18203.3080
H102.78102.58493.79583.14322.17953.08682.51791.10761.78553.01953.83113.02592.14172.8986
N114.95785.28185.84515.04413.71243.78004.08542.47362.54763.01951.01971.01751.39312.3047
H125.87656.17406.72406.03094.54744.57664.75773.38473.56243.83111.01971.73652.05222.5064
H135.03685.29186.01594.94034.02894.17644.57962.62062.32723.02591.01751.73652.09023.1912
C143.92194.22364.73864.25882.55082.79482.73791.53612.18202.14171.39312.05222.09021.2434
O154.40564.69325.03034.97272.91873.10522.63552.44733.30802.89862.30472.50643.19121.2434

picture of Butanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.090 C1 C5 H7 110.637
C1 C5 C8 111.490 H2 C1 H3 108.023
H2 C1 H4 107.929 H2 C1 C5 110.772
H3 C1 H4 108.025 H3 C1 C5 110.868
H4 C1 C5 111.096 C5 C8 H9 110.452
C5 C8 H10 109.493 C5 C8 C14 111.848
H6 C5 H7 107.012 H6 C5 C8 108.917
H7 C5 C8 108.568 C8 C14 N11 115.142
C8 C14 O15 123.050 H9 C8 H10 107.519
H9 C8 C14 110.277 H10 C8 C14 107.099
N11 C14 O15 121.788 H12 N11 H13 116.944
H12 N11 C14 115.680 H13 N11 C14 119.428
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability