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 C4H7NO (Methacrylamide)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-283.854641
Energy at 298.15K-283.862643
HF Energy-283.265303
Nuclear repulsion energy226.454797
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 MP2/3-21G
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 3705 3536 32.11      
2 A 3565 3402 40.46      
3 A 3253 3105 12.70      
4 A 3178 3034 7.73      
5 A 3171 3027 4.66      
6 A 3155 3011 13.71      
7 A 3088 2948 11.45      
8 A 1726 1648 153.31      
9 A 1693 1616 22.67      
10 A 1666 1590 44.38      
11 A 1597 1525 12.84      
12 A 1578 1506 9.83      
13 A 1517 1448 8.85      
14 A 1484 1417 15.47      
15 A 1373 1310 100.04      
16 A 1264 1207 66.59      
17 A 1132 1080 1.71      
18 A 1107 1056 4.36      
19 A 1070 1021 5.33      
20 A 956 913 23.99      
21 A 949 906 25.56      
22 A 833 795 19.25      
23 A 723 690 5.85      
24 A 693 661 30.36      
25 A 596 569 43.56      
26 A 576 549 3.39      
27 A 518 495 6.99      
28 A 442 422 229.17      
29 A 377 360 21.83      
30 A 319 305 4.92      
31 A 268 256 13.88      
32 A 146 139 0.25      
33 A 80 76 4.38      

Unscaled Zero Point Vibrational Energy (zpe) 23897.3 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 22809.9 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 MP2/3-21G
ABC
0.16874 0.11161 0.07140

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.666 0.770 0.274
H2 -2.651 0.532 0.247
H3 -1.384 1.636 0.710
C4 1.662 -0.933 0.262
H5 1.553 -1.303 1.288
H6 1.418 -1.756 -0.417
H7 2.697 -0.616 0.105
C8 1.089 1.472 -0.275
H9 0.378 2.252 -0.534
H10 2.138 1.753 -0.282
C11 -0.753 -0.215 -0.040
O12 -1.085 -1.388 -0.340
C13 0.701 0.213 0.000

Atom - Atom Distances (Å)
  N1 H2 H3 C4 H5 H6 H7 C8 H9 H10 C11 O12 C13
N11.01311.01013.73853.96054.04574.58142.89582.65133.96901.37982.31782.4469
H21.01311.74354.55434.70294.71425.47143.89113.56964.97062.05962.54573.3753
H31.01011.74354.00994.19494.54164.70052.66692.24323.66132.09503.21562.6220
C43.73854.55434.00991.09621.09401.09422.52973.52492.78212.53682.84851.5187
H53.96054.70294.19491.09621.76921.78343.21824.16363.48542.87403.10112.1641
H64.04574.71424.54161.09401.76921.79133.24734.14173.58482.68812.53072.1366
H74.58145.47144.70051.09421.78341.79132.66273.74322.46493.47603.88582.1645
C82.89583.89112.66692.52973.21823.24732.66271.08671.08662.50843.59281.3455
H92.65133.56962.24323.52494.16364.14173.74321.08671.84692.75833.92742.1319
H103.96904.97063.66132.78213.48543.58482.46491.08661.84693.50594.50122.1257
C111.37982.05962.09502.53682.87402.68813.47602.50842.75833.50591.25561.5155
O122.31782.54573.21562.84853.10112.53073.88583.59283.92744.50121.25562.4224
C132.44693.37532.62201.51872.16412.13662.16451.34552.13192.12571.51552.4224

picture of Methacrylamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 H11 H12 123.098 C1 H11 H13 115.291
C2 C1 C3 119.022 C2 C1 H11 117.985
C3 C1 H11 121.700 C4 H13 H8 123.960
C4 H13 H11 113.453 O5 C4 N6 107.755
O5 C4 H7 109.011 O5 C4 H13 110.669
N6 C4 H7 109.893 N6 C4 H13 108.633
H7 C4 H13 110.825 H8 H13 H11 122.396
H9 H8 H10 116.380 H9 H8 H13 122.092
H10 H8 H13 121.496 H12 H11 H13 121.611
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.782     -0.981
2 H 0.324     0.420
3 H 0.324     0.412
4 C -0.558     -0.273
5 H 0.201     0.088
6 H 0.226     0.098
7 H 0.185     0.099
8 C -0.362     -0.474
9 H 0.178     0.173
10 H 0.190     0.203
11 C 0.633     0.722
12 O -0.476     -0.488
13 C -0.083     0.002


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.018 2.975 1.239 3.223
CHELPG        
AIM        
ESP 0.042 2.964 1.232 3.211


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.778 -4.377 -1.853
y -4.377 -37.172 -0.150
z -1.853 -0.150 -37.937
Traceless
 xyz
x 5.776 -4.377 -1.853
y -4.377 -2.314 -0.150
z -1.853 -0.150 -3.462
Polar
3z2-r2-6.924
x2-y25.393
xy-4.377
xz-1.853
yz-0.150


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.357 0.330 -0.116
y 0.330 8.486 -0.071
z -0.116 -0.071 3.515


<r2> (average value of r2) Å2
<r2> 166.228
(<r2>)1/2 12.893