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: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-287.734966
Energy at 298.15K-287.745218
Nuclear repulsion energy238.551400
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3745 3583 32.33      
2 A 3614 3457 32.89      
3 A 3134 2998 45.89      
4 A 3131 2995 39.58      
5 A 3109 2974 4.97      
6 A 3080 2946 19.42      
7 A 3066 2934 25.33      
8 A 3049 2917 29.04      
9 A 3036 2905 13.17      
10 A 1822 1743 275.34      
11 A 1645 1574 118.63      
12 A 1533 1466 6.24      
13 A 1525 1459 7.68      
14 A 1517 1451 2.73      
15 A 1491 1427 7.21      
16 A 1438 1375 11.99      
17 A 1433 1371 65.75      
18 A 1377 1317 34.38      
19 A 1332 1275 29.15      
20 A 1281 1226 40.07      
21 A 1262 1207 5.61      
22 A 1147 1098 0.75      
23 A 1128 1079 3.27      
24 A 1089 1042 1.00      
25 A 1067 1021 2.02      
26 A 940 899 2.63      
27 A 894 855 1.11      
28 A 856 819 3.75      
29 A 755 722 7.79      
30 A 675 646 7.48      
31 A 617 590 15.56      
32 A 520 497 6.38      
33 A 425 407 2.02      
34 A 342 327 2.67      
35 A 248 237 0.34      
36 A 185 177 8.15      
37 A 173 166 238.98      
38 A 90 86 1.46      
39 A 39 38 4.84      

Unscaled Zero Point Vibrational Energy (zpe) 28904.4 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 27652.9 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 B3PW91/6-31G*
ABC
0.28779 0.06105 0.05262

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.729 -0.197 0.035
H2 -2.878 -0.339 1.113
H3 -3.517 0.476 -0.321
H4 -2.881 -1.170 -0.449
C5 -1.345 0.372 -0.263
H6 -1.236 0.542 -1.342
H7 -1.220 1.351 0.211
C8 -0.216 -0.538 0.216
H9 -0.251 -1.507 -0.300
H10 -0.347 -0.755 1.287
N11 2.184 -0.769 -0.151
H12 3.125 -0.403 -0.165
H13 2.057 -1.768 -0.120
C14 1.156 0.106 0.054
O15 1.334 1.312 0.111

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 C8 H9 H10 N11 H12 H13 C14 O15
C11.09721.09571.09731.52582.16212.16932.54262.82352.74834.95015.86115.04073.89714.3355
H21.09721.76921.76962.17913.08252.53392.81593.20382.57085.23546.13785.28444.19454.6340
H31.09571.76921.76902.17522.50052.51573.49473.82123.76185.83816.70156.01294.70274.9420
H41.09731.76961.76902.18332.53613.08992.81782.65543.09935.08906.06054.98514.26284.9232
C51.52582.17912.17522.18331.09771.09511.52702.17462.16073.71084.53764.02242.53512.8645
H62.16213.08252.50052.53611.09771.75102.15242.50073.06323.85104.61384.20402.80283.0511
H72.16932.53392.51573.08991.09511.75102.13853.06052.52054.02614.69984.53622.68642.5559
C82.54262.81593.49472.81781.52702.15242.13851.09871.10052.43923.36542.60721.52442.4163
H92.82353.20383.82122.65542.17462.50073.06051.09871.75912.54853.55402.33012.16923.2605
H102.74832.57083.76183.09932.16073.06322.52051.10051.75912.91143.77992.96482.12652.9126
N114.95015.23545.83815.08903.71083.85104.02612.43922.54852.91141.00951.00751.36562.2637
H125.86116.13786.70156.06054.53764.61384.69983.36543.55403.77991.00951.73342.04522.4950
H135.04075.28446.01294.98514.02244.20404.53622.60722.33012.96481.00751.73342.08703.1729
C143.89714.19454.70274.26282.53512.80282.68641.52442.16922.12651.36562.04522.08701.2210
O154.33554.63404.94204.92322.86453.05112.55592.41633.26052.91262.26372.49503.17291.2210

picture of Butanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 109.930 C1 C5 H7 110.655
C1 C5 C8 112.791 H2 C1 H3 107.569
H2 C1 H4 107.494 H2 C1 C5 111.309
H3 C1 H4 107.541 H3 C1 C5 111.087
H4 C1 C5 111.637 C5 C8 H9 110.773
C5 C8 H10 109.570 C5 C8 C14 112.365
H6 C5 H7 105.975 H6 C5 C8 109.082
H7 C5 C8 108.159 C8 C14 N11 115.026
C8 C14 O15 122.938 H9 C8 H10 106.235
H9 C8 C14 110.532 H10 C8 C14 107.110
N11 C14 O15 122.033 H12 N11 H13 118.501
H12 N11 C14 118.106 H13 N11 C14 122.436
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.514     -0.367
2 H 0.164     0.093
3 H 0.172     0.087
4 H 0.161     0.082
5 C -0.304     0.244
6 H 0.169     -0.016
7 H 0.196     -0.009
8 C -0.419     -0.349
9 H 0.161     0.093
10 H 0.192     0.097
11 N -0.792     -0.977
12 H 0.359     0.426
13 H 0.352     0.404
14 C 0.612     0.734
15 O -0.510     -0.543


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.340 -3.539 0.026 3.555
CHELPG        
AIM        
ESP 0.324 -3.562 0.045 3.577


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.093 -6.237 -0.224
y -6.237 -38.170 -0.292
z -0.224 -0.292 -37.403
Traceless
 xyz
x 5.694 -6.237 -0.224
y -6.237 -3.422 -0.292
z -0.224 -0.292 -2.272
Polar
3z2-r2-4.544
x2-y26.077
xy-6.237
xz-0.224
yz-0.292


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 216.946
(<r2>)1/2 14.729