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 (Propanamide, 2-methyl-)

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-286.125835
Energy at 298.15K-286.136570
Nuclear repulsion energy248.187205
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 B1B95/3-21G
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 3694 3534 28.05      
2 A 3560 3406 28.77      
3 A 3169 3032 12.57      
4 A 3152 3016 22.96      
5 A 3149 3013 16.05      
6 A 3142 3006 24.92      
7 A 3081 2947 12.91      
8 A 3077 2944 19.24      
9 A 3065 2932 20.24      
10 A 1771 1695 192.59      
11 A 1670 1597 93.53      
12 A 1569 1501 20.52      
13 A 1559 1492 12.54      
14 A 1545 1478 1.92      
15 A 1540 1474 4.96      
16 A 1462 1398 30.00      
17 A 1443 1380 12.46      
18 A 1399 1339 45.94      
19 A 1351 1293 27.93      
20 A 1306 1250 82.49      
21 A 1221 1168 3.72      
22 A 1155 1105 2.17      
23 A 1137 1087 11.99      
24 A 1089 1042 4.19      
25 A 1002 959 0.67      
26 A 970 928 5.69      
27 A 920 880 4.28      
28 A 792 757 32.17      
29 A 750 717 12.42      
30 A 614 588 38.05      
31 A 600 574 69.86      
32 A 508 486 168.40      
33 A 478 457 16.02      
34 A 349 334 0.88      
35 A 313 299 8.75      
36 A 256 244 3.84      
37 A 238 228 0.13      
38 A 194 186 0.09      
39 A 42 40 5.67      

Unscaled Zero Point Vibrational Energy (zpe) 29163.8 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 27901.0 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 B1B95/3-21G
ABC
0.16062 0.10254 0.07576

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.587 -0.949 -0.352
H2 -1.360 -1.687 -1.126
H3 -1.463 -1.438 0.617
H4 -2.622 -0.616 -0.471
C5 -1.052 1.345 0.557
H6 -0.344 2.179 0.549
H7 -1.091 0.935 1.571
C8 -0.623 0.233 -0.422
H9 -0.582 0.641 -1.439
N10 1.770 0.613 -0.380
H11 2.720 0.400 -0.104
H12 1.593 1.441 -0.930
C13 0.771 -0.240 -0.012
O14 0.969 -1.276 0.634
H15 -2.044 1.723 0.294

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 C8 H9 N10 H11 H12 C13 O14 H15
C11.09321.09241.09312.52513.48462.73741.52732.17353.70334.52084.02032.48592.75952.7864
H21.09321.76401.77943.48134.33373.77102.17352.47453.95544.69574.30602.80652.94843.7559
H31.09241.76401.78982.81393.78662.58462.13993.05443.95634.62584.47442.61162.43783.2300
H41.09311.77941.78982.71403.74702.98622.17172.58434.56145.45004.71223.44393.81472.5273
C52.52513.48132.81392.71401.09411.09411.54262.16853.06263.94483.03622.48173.31091.0937
H63.48464.33373.78663.74701.09411.77472.19242.52462.78973.60232.54622.72133.69661.7792
H72.73743.77102.58462.98621.09411.77472.16453.06713.47814.19783.70362.71173.16461.7773
C81.52732.17352.13992.17171.54262.19242.16451.09632.42393.36292.57461.52852.43512.1794
H92.17352.47453.05442.58432.16852.52463.06711.09632.57973.56962.37252.15473.22142.5123
N103.70333.95543.95634.56143.06262.78973.47812.42392.57971.01171.00971.36432.28794.0293
H114.52084.69574.62585.45003.94483.60234.19783.36293.56961.01171.74182.05392.53354.9606
H124.02034.30604.47444.71223.03622.54623.70362.57462.37251.00971.74182.08413.19573.8481
C132.48592.80652.61163.44392.48172.72132.71171.52852.15471.36432.05392.08411.23653.4452
O142.75952.94842.43783.81473.31093.69663.16462.43513.22142.28792.53353.19571.23654.2648
H152.78643.75593.23002.52731.09371.77921.77732.17942.51234.02934.96063.84813.44524.2648

picture of Propanamide, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C8 C5 110.679 C1 C8 H9 110.803
C1 C8 C13 108.879 H2 C1 H3 107.631
H2 C1 H4 108.951 H2 C1 C8 110.994
H3 C1 H4 109.955 H3 C1 C8 108.400
H4 C1 C8 110.851 C5 C8 H9 109.352
C5 C8 C13 107.817 H6 C5 H7 108.392
H6 C5 C8 111.371 H6 C5 H15 108.824
H7 C5 C8 109.172 H7 C5 H15 108.657
C8 C5 H15 110.363 C8 C13 N10 113.722
C8 C13 O14 123.102 H9 C8 C13 109.248
N10 C13 O14 123.132 H11 N10 H12 119.022
H11 N10 C13 118.899 H12 N10 C13 122.072
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.561      
2 H 0.213      
3 H 0.232      
4 H 0.194      
5 C -0.564      
6 H 0.196      
7 H 0.224      
8 C -0.414      
9 H 0.214      
10 N -0.788      
11 H 0.331      
12 H 0.325      
13 C 0.696      
14 O -0.510      
15 H 0.212      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.415 3.166 -1.661 3.599
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.423 4.069 -2.017
y 4.069 -38.926 0.326
z -2.017 0.326 -37.495
Traceless
 xyz
x 5.787 4.069 -2.017
y 4.069 -3.967 0.326
z -2.017 0.326 -1.821
Polar
3z2-r2-3.641
x2-y26.503
xy4.069
xz-2.017
yz0.326


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.592 0.318 0.008
y 0.318 7.235 -0.668
z 0.008 -0.668 5.650


<r2> (average value of r2) Å2
<r2> 171.081
(<r2>)1/2 13.080