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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-52.987616
Energy at 298.15K-52.998114
HF Energy-52.453559
Nuclear repulsion energy130.396510
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 3768 3641 29.11      
2 A 3606 3484 42.62      
3 A 3141 3035 111.12      
4 A 3129 3023 64.87      
5 A 3115 3010 2.99      
6 A 3106 3001 22.13      
7 A 3054 2951 40.12      
8 A 3041 2939 30.33      
9 A 3024 2922 44.93      
10 A 1692 1635 194.73      
11 A 1628 1573 122.82      
12 A 1532 1480 10.16      
13 A 1530 1478 8.14      
14 A 1521 1470 1.35      
15 A 1506 1455 7.37      
16 A 1453 1404 2.96      
17 A 1430 1382 49.30      
18 A 1380 1334 68.14      
19 A 1342 1296 10.24      
20 A 1310 1266 74.70      
21 A 1276 1233 27.08      
22 A 1159 1120 4.27      
23 A 1135 1096 5.70      
24 A 1076 1039 7.82      
25 A 1064 1028 1.69      
26 A 925 894 4.27      
27 A 903 872 1.68      
28 A 858 829 0.18      
29 A 759 733 6.85      
30 A 671 649 41.01      
31 A 601 581 69.47      
32 A 526 508 47.66      
33 A 442 427 220.51      
34 A 413 399 9.41      
35 A 329 318 2.49      
36 A 225 217 0.11      
37 A 179 173 6.32      
38 A 91 88 2.18      
39 A 27 26 5.51      

Unscaled Zero Point Vibrational Energy (zpe) 28981.3 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 28004.6 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
0.25926 0.05821 0.05069

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 -2.791 -0.179 0.003
H2 -2.988 -0.039 1.089
H3 -3.568 0.376 -0.565
H4 -2.900 -1.262 -0.230
C5 -1.355 0.333 -0.371
H6 -1.177 0.200 -1.462
H7 -1.257 1.416 -0.150
C8 -0.240 -0.441 0.423
H9 -0.295 -1.530 0.195
H10 -0.409 -0.313 1.516
N11 2.151 -0.873 -0.214
H12 3.103 -0.563 -0.413
H13 1.941 -1.869 -0.213
C14 1.179 0.100 0.097
O15 1.467 1.353 0.103

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 C8 H9 H10 N11 H12 H13 C14 O15
C11.11241.11121.11261.56972.21232.21892.59842.84412.82474.99495.92055.02943.98134.5262
H21.11241.80091.80072.22113.13692.57812.85543.20462.62765.36616.29425.41624.28564.7697
H31.11121.80091.80002.22212.55982.56863.56653.86283.84475.86436.73835.95974.80165.1723
H41.11261.80071.80002.22502.57373.14332.85932.65283.18655.06606.04604.87954.31335.1007
C51.56972.22112.22212.22501.11361.11021.57242.21692.20693.71074.54693.96722.58793.0376
H62.21233.13692.55982.57371.11361.79112.20072.55333.11793.71304.47223.94572.82773.2814
H72.21892.57812.56863.14331.11021.79112.19403.11882.54614.10584.79514.58532.78042.7362
C82.59842.85543.56652.85931.57242.20072.19401.11381.11352.51163.44772.68331.55382.4970
H92.84413.20463.86282.65282.21692.55333.11881.11381.79992.56603.58492.29882.20053.3801
H102.82472.62763.84473.18652.20693.11792.54611.11351.79993.14014.01443.30672.16962.8794
N114.99495.36615.86435.06603.71073.71304.10582.51162.56603.14011.02031.01771.40932.3494
H125.92056.29426.73836.04604.54694.47224.79513.44773.58494.01441.02031.75852.09712.5712
H135.02945.41625.95974.87953.96723.94574.58532.68332.29883.30671.01771.75852.13343.2712
C143.98134.28564.80164.31332.58792.82772.78041.55382.20052.16961.40932.09712.13341.2853
O154.52624.76975.17235.10073.03763.28142.73622.49703.38012.87942.34942.57123.27121.2853

picture of Butanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 109.898 C1 C5 H7 110.611
C1 C5 C8 111.576 H2 C1 H3 108.173
H2 C1 H4 108.061 H2 C1 C5 110.654
H3 C1 H4 108.083 H3 C1 C5 110.810
H4 C1 C5 110.949 C5 C8 H9 110.060
C5 C8 H10 109.316 C5 C8 C14 111.745
H6 C5 H7 107.295 H6 C5 C8 108.833
H7 C5 C8 108.509 C8 C14 N11 115.828
C8 C14 O15 122.884 H9 C8 H10 107.824
H9 C8 C14 110.066 H10 C8 C14 107.719
N11 C14 O15 121.288 H12 N11 H13 119.275
H12 N11 C14 118.468 H13 N11 C14 122.219
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability