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 CH2CHCONH2 (Acrylamide)

using model chemistry: B1B95/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A
Energy calculated at B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-247.210597
Energy at 298.15K-247.216059
Nuclear repulsion energy163.609607
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 B1B95/6-31G(2df,p)
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 3785 3625 41.25      
2 A 3642 3488 51.00      
3 A 3273 3134 1.81      
4 A 3182 3047 11.87      
5 A 3167 3033 7.08      
6 A 1819 1742 231.05      
7 A 1715 1643 26.21      
8 A 1614 1546 130.43      
9 A 1433 1373 102.38      
10 A 1363 1305 43.49      
11 A 1286 1231 63.43      
12 A 1111 1064 1.37      
13 A 1027 983 2.61      
14 A 1025 982 27.06      
15 A 1000 958 8.76      
16 A 829 794 18.59      
17 A 821 786 4.88      
18 A 628 601 3.71      
19 A 612 586 10.57      
20 A 475 455 6.18      
21 A 459 440 5.31      
22 A 279 267 7.13      
23 A 137 131 39.99      
24 A 84 81 153.10      

Unscaled Zero Point Vibrational Energy (zpe) 17382.1 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 16646.8 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 B1B95/6-31G(2df,p)
ABC
0.36051 0.14274 0.10226

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.793 -0.658 -0.000
C2 0.473 0.130 -0.000
N3 1.604 -0.626 -0.000
O4 0.498 1.343 -0.000
C5 -1.960 -0.028 0.000
H6 -0.732 -1.742 -0.000
H7 2.491 -0.156 0.001
H8 1.584 -1.628 0.001
H9 -1.973 1.056 0.000
H10 -2.905 -0.557 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 C5 H6 H7 H8 H9 H10
C11.49062.39732.38151.32591.08623.32252.56672.08072.1141
C21.49061.36041.21412.43782.22622.03882.07882.61503.4465
N32.39731.36042.25873.61382.58941.00401.00193.95254.5093
O42.38151.21412.25872.81483.32192.49443.16312.48733.8976
C51.32592.43783.61382.81482.10824.45323.88761.08461.0828
H61.08622.22622.58943.32192.10823.59282.31863.06092.4744
H73.32252.03881.00402.49444.45323.59281.72914.62575.4110
H82.56672.07881.00193.16313.88762.31861.72914.45524.6139
H92.08072.61503.95252.48731.08463.06094.62574.45521.8634
H102.11413.44654.50933.89761.08282.47445.41104.61391.8634

picture of Acrylamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.383 C1 C2 O4 123.078
C1 C5 H9 119.013 C1 C5 H10 122.405
C2 C1 C5 119.776 C2 C1 H6 118.685
C2 N3 H7 118.368 C2 N3 H8 122.550
N3 C2 O4 122.538 C5 C1 H6 121.540
H7 N3 H8 119.082 H9 C5 H10 118.582
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.120      
2 C 0.437      
3 N -0.573      
4 O -0.381      
5 C -0.299      
6 H 0.100      
7 H 0.275      
8 H 0.271      
9 H 0.158      
10 H 0.133      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.556 -3.405 0.004 3.450
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.501 -2.816 0.007
y -2.816 -29.439 -0.004
z 0.007 -0.004 -30.952
Traceless
 xyz
x 8.695 -2.816 0.007
y -2.816 -3.212 -0.004
z 0.007 -0.004 -5.482
Polar
3z2-r2-10.964
x2-y27.938
xy-2.816
xz0.007
yz-0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.827 -0.714 0.000
y -0.714 6.540 0.000
z 0.000 0.000 3.147


<r2> (average value of r2) Å2
<r2> 113.803
(<r2>)1/2 10.668