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 C4H9NO (Butanamide)

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-286.519329
Energy at 298.15K-286.529891
HF Energy-285.918800
Nuclear repulsion energy235.659057
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 MP2/6-31G
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 3759 3596 32.87      
2 A 3612 3456 43.39      
3 A 3143 3007 59.89      
4 A 3140 3005 39.98      
5 A 3119 2985 1.36      
6 A 3081 2948 18.95      
7 A 3076 2943 13.15      
8 A 3052 2920 28.10      
9 A 3036 2905 16.05      
10 A 1721 1647 219.28      
11 A 1675 1602 62.34      
12 A 1580 1511 7.48      
13 A 1574 1506 6.78      
14 A 1567 1499 2.87      
15 A 1550 1483 6.44      
16 A 1486 1422 1.28      
17 A 1447 1384 45.37      
18 A 1402 1341 87.65      
19 A 1367 1308 7.34      
20 A 1321 1264 77.83      
21 A 1310 1253 4.76      
22 A 1170 1119 0.44      
23 A 1165 1115 1.82      
24 A 1098 1051 1.46      
25 A 1078 1031 1.71      
26 A 953 912 4.31      
27 A 931 891 0.76      
28 A 861 824 1.78      
29 A 778 744 7.79      
30 A 642 614 43.76      
31 A 611 585 28.47      
32 A 519 497 60.71      
33 A 440 421 4.23      
34 A 389 372 256.01      
35 A 351 336 3.70      
36 A 245 235 0.01      
37 A 188 180 8.61      
38 A 92 88 0.59      
39 A 18 18 2.56      

Unscaled Zero Point Vibrational Energy (zpe) 29272.7 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 28008.2 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 MP2/6-31G
ABC
0.28088 0.06000 0.05103

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.756 -0.236 0.012
H2 -2.892 -0.657 1.020
H3 -3.561 0.491 -0.162
H4 -2.874 -1.053 -0.715
C5 -1.371 0.434 -0.123
H6 -1.263 0.877 -1.125
H7 -1.272 1.262 0.592
C8 -0.217 -0.565 0.110
H9 -0.275 -1.385 -0.627
H10 -0.322 -1.030 1.106
N11 2.233 -0.779 -0.067
H12 3.169 -0.396 -0.100
H13 2.115 -1.781 -0.113
C14 1.164 0.093 0.025
O15 1.328 1.347 0.056

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 C8 H9 H10 N11 H12 H13 C14 O15
C11.10021.09881.10021.54522.18232.18662.56252.80802.78445.02015.92835.11223.93394.3808
H21.10021.77851.77952.19373.09942.54752.82713.17612.59865.24106.16905.25544.24294.7705
H31.09881.77851.77842.19202.52152.53003.51773.81243.79675.93336.78856.11454.74554.9686
H41.10021.77951.77842.19532.54683.10312.82452.62133.13545.15566.10915.07784.26154.8999
C51.54522.19372.19202.19531.10021.09851.54342.18162.17993.80314.61444.12952.56132.8546
H62.18233.09942.52152.54681.10021.75892.16742.51783.08174.01104.72324.41572.79732.8858
H72.18662.54752.53003.10311.09851.75892.16393.07922.53334.10984.79054.60732.76082.6566
C82.56252.82713.51772.82451.54342.16742.16391.10361.10402.46633.39642.63951.53162.4588
H92.80803.17613.81242.62132.18162.51783.07921.10361.76922.64073.62132.47682.16263.2400
H102.78442.59863.79673.13542.17993.08172.53331.10401.76922.82283.74702.82652.15283.0779
N115.02015.24105.93335.15563.80314.01104.10982.46632.64072.82281.01121.00921.38322.3142
H125.92836.16906.78856.10914.61444.72324.79053.39643.62133.74701.01121.73982.06752.5395
H135.11225.25546.11455.07784.12954.41574.60732.63952.47682.82651.00921.73982.10553.2293
C143.93394.24294.74554.26152.56132.79732.76081.53162.16262.15281.38322.06752.10551.2654
O154.38084.77054.96864.89992.85462.88582.65662.45883.24003.07792.31422.53953.22931.2654

picture of Butanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.019 C1 C5 H7 110.459
C1 C5 C8 112.124 H2 C1 H3 107.963
H2 C1 H4 107.949 H2 C1 C5 110.927
H3 C1 H4 107.947 H3 C1 C5 110.871
H4 C1 C5 111.052 C5 C8 H9 109.894
C5 C8 H10 109.742 C5 C8 C14 112.799
H6 C5 H7 106.252 H6 C5 C8 108.989
H7 C5 C8 108.812 C8 C14 N11 115.488
C8 C14 O15 122.778 H9 C8 H10 106.535
H9 C8 C14 109.222 H10 C8 C14 108.444
N11 C14 O15 121.726 H12 N11 H13 118.876
H12 N11 C14 118.590 H13 N11 C14 122.530
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability