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 NH(CH3)CONH(CH3) (Urea, N,N'-dimethyl-)

using model chemistry: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-300.364683
Energy at 298.15K-300.375091
HF Energy-300.364683
Nuclear repulsion energy248.782406
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 HF/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 3842 3467 46.65      
2 A 3329 3004 0.60      
3 A 3238 2922 0.00      
4 A 3196 2885 3.46      
5 A 1862 1681 206.93      
6 A 1699 1533 47.81      
7 A 1686 1522 0.00      
8 A 1649 1488 23.22      
9 A 1593 1437 57.21      
10 A 1298 1171 11.34      
11 A 1267 1143 0.00      
12 A 1254 1132 1.98      
13 A 987 891 9.14      
14 A 537 485 1.93      
15 A 408 368 0.00      
16 A 256 231 1.85      
17 A 203 183 0.00      
18 A 91 82 0.00      
19 B 3831 3458 5.68      
20 B 3328 3004 0.11      
21 B 3238 2923 114.79      
22 B 3195 2883 119.18      
23 B 1720 1553 233.09      
24 B 1687 1523 17.65      
25 B 1661 1500 273.52      
26 B 1603 1447 13.50      
27 B 1359 1227 390.18      
28 B 1271 1147 7.12      
29 B 1269 1146 33.85      
30 B 1083 977 5.91      
31 B 877 792 147.22      
32 B 771 696 2.18      
33 B 618 558 311.45      
34 B 399 360 39.76      
35 B 137 123 15.43      
36 B 104 94 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 28271.7 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 25518.0 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 HF/3-21G*
ABC
0.33295 0.07185 0.06042

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.094
O2 0.000 0.000 1.320
N3 0.000 1.148 -0.643
N4 0.000 -1.148 -0.643
C5 0.001 2.456 0.005
C6 -0.001 -2.456 0.005
H7 -0.001 1.109 -1.637
H8 0.001 -1.109 -1.637
H9 0.883 3.024 -0.267
H10 -0.883 -3.024 -0.267
H11 0.003 2.285 1.070
H12 -0.003 -2.285 1.070
H13 -0.881 3.024 -0.264
H14 0.881 -3.024 -0.264

Atom - Atom Distances (Å)
  C1 O2 N3 N4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.22591.36411.36412.45722.45722.05612.05613.17103.17102.48452.48453.17053.1705
O21.22592.27392.27392.78542.78543.15843.15843.52743.52742.29872.29873.52593.5259
N31.36412.27392.29571.45963.66130.99522.46612.10754.28092.05563.83632.10764.2811
N41.36412.27392.29573.66131.45962.46610.99524.28092.10753.83632.05564.28112.1076
C52.45722.78541.45963.66134.91132.12413.92481.08395.55731.07784.85861.08395.5568
C62.45722.78543.66131.45964.91133.92482.12415.55731.08394.85861.07785.55681.0839
H72.05613.15840.99522.46612.12413.92482.21792.51534.44282.95134.34122.51624.4439
H82.05613.15842.46610.99523.92482.12412.21794.44282.51534.34122.95134.44392.5162
H93.17103.52742.10754.28091.08395.55732.51534.44286.30071.76255.54591.76436.0485
H103.17103.52744.28092.10755.55731.08394.44282.51536.30075.54591.76256.04851.7643
H112.48452.29872.05563.83631.07784.85862.95134.34121.76255.54594.57011.76255.5443
H122.48452.29873.83632.05564.85861.07784.34122.95135.54591.76254.57015.54431.7625
H133.17053.52592.10764.28111.08395.55682.51624.44391.76436.04851.76255.54436.3004
H143.17053.52594.28112.10765.55681.08394.44392.51626.04851.76435.54431.76256.3004

picture of Urea, N,N'-dimethyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 C5 120.928 C1 N3 H7 120.466
C1 N4 C6 120.928 C1 N4 H8 120.466
O2 C1 N3 122.706 O2 C1 N4 122.706
N3 C1 N4 114.587 N3 C5 H9 111.044
N3 C5 H11 107.258 N3 C5 H13 111.055
N4 C6 H10 111.044 N4 C6 H12 107.258
N4 C6 H14 111.055 C5 N3 H7 118.606
C6 N4 H8 118.606 H9 C5 H11 109.244
H9 C5 H13 108.960 H10 C6 H12 109.244
H10 C6 H14 108.960 H11 C5 H13 109.239
H12 C6 H14 109.239
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.226      
2 O -0.688      
3 N -0.926      
4 N -0.926      
5 C -0.349      
6 C -0.349      
7 H 0.339      
8 H 0.339      
9 H 0.200      
10 H 0.200      
11 H 0.267      
12 H 0.267      
13 H 0.200      
14 H 0.200      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -4.114 4.114
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.112 0.005 0.000
y 0.005 -29.466 0.000
z 0.000 0.000 -36.879
Traceless
 xyz
x -4.939 0.005 0.000
y 0.005 8.029 0.000
z 0.000 0.000 -3.090
Polar
3z2-r2-6.180
x2-y2-8.645
xy0.005
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.959 0.001 0.000
y 0.001 7.686 0.000
z 0.000 0.000 5.973


<r2> (average value of r2) Å2
<r2> 192.864
(<r2>)1/2 13.888