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: PBEPBE/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBEPBE/6-31G**
 hartrees
Energy at 0K-303.523370
Energy at 298.15K-303.533239
HF Energy-303.523370
Nuclear repulsion energy246.581740
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 PBEPBE/6-31G**
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 3533 3484 7.03      
2 A 3103 3060 2.55      
3 A 3033 2991 4.25      
4 A 2956 2916 0.44      
5 A 1750 1726 191.30      
6 A 1492 1472 20.77      
7 A 1461 1441 0.00      
8 A 1438 1419 4.63      
9 A 1392 1373 17.24      
10 A 1175 1159 0.50      
11 A 1145 1129 3.32      
12 A 1111 1096 5.75      
13 A 903 891 2.57      
14 A 512 505 28.39      
15 A 400 394 46.11      
16 A 229 226 1.94      
17 A 171 168 0.00      
18 A 93 92 0.79      
19 B 3528 3480 7.06      
20 B 3102 3060 0.33      
21 B 3033 2991 69.59      
22 B 2955 2914 157.30      
23 B 1531 1510 256.97      
24 B 1467 1447 19.81      
25 B 1453 1433 133.67      
26 B 1398 1379 3.46      
27 B 1215 1199 236.88      
28 B 1123 1107 8.76      
29 B 1104 1089 31.36      
30 B 1042 1028 0.55      
31 B 723 713 2.16      
32 B 699 690 28.17      
33 B 488 481 132.28      
34 B 333 328 52.63      
35 B 123 121 9.27      
36 B 93 92 1.47      

Unscaled Zero Point Vibrational Energy (zpe) 25652.4 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 25301.0 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 PBEPBE/6-31G**
ABC
0.32055 0.07147 0.05996

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.106
O2 0.000 0.000 1.342
N3 0.000 1.165 -0.658
N4 0.000 -1.165 -0.658
C5 -0.233 2.442 -0.002
C6 0.233 -2.442 -0.002
H7 -0.341 1.081 -1.614
H8 0.341 -1.081 -1.614
H9 0.336 3.240 -0.505
H10 -0.336 -3.240 -0.505
H11 0.116 2.342 1.035
H12 -0.116 -2.342 1.035
H13 -1.302 2.727 0.023
H14 1.302 -2.727 0.023

Atom - Atom Distances (Å)
  C1 O2 N3 N4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.23591.39331.39332.45502.45502.05962.05963.31453.31452.52262.52263.02313.0231
O21.23592.31462.31462.79672.79673.16543.16543.74483.74482.36532.36533.29713.2971
N31.39332.31462.33001.45413.67321.01802.46442.10794.42082.06553.89642.14484.1603
N41.39332.31462.33003.67321.45412.46441.01804.42082.10793.89642.06554.16032.1448
C52.45502.79671.45413.67324.90532.11193.91591.10205.70501.09874.89651.10685.3918
C62.45502.79673.67321.45414.90533.91592.11195.70501.10204.89651.09875.39181.1068
H72.05963.16541.01802.46442.11193.91592.26702.52004.46112.96904.33402.51254.4588
H82.05963.16542.46441.01803.91592.11192.26704.46112.52004.33402.96904.45882.5125
H93.31453.74482.10794.42081.10205.70502.52004.46116.51531.79605.80891.79586.0682
H103.31453.74484.42082.10795.70501.10204.46112.52006.51535.80891.79606.06821.7958
H112.52262.36532.06553.89641.09874.89652.96904.33401.79605.80894.69071.78415.3037
H122.52262.36533.89642.06554.89651.09874.33402.96905.80891.79604.69075.30371.7841
H133.02313.29712.14484.16031.10685.39182.51254.45881.79586.06821.78415.30376.0439
H143.02313.29714.16032.14485.39181.10684.45882.51256.06821.79585.30371.78416.0439

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 119.117 C1 N3 H7 116.464
C1 N4 C6 119.117 C1 N4 H8 116.464
O2 C1 N3 123.263 O2 C1 N4 123.263
N3 C1 N4 113.474 N3 C5 H9 110.346
N3 C5 H11 107.198 N3 C5 H13 113.057
N4 C6 H10 110.346 N4 C6 H12 107.198
N4 C6 H14 113.057 C5 N3 H7 116.246
C6 N4 H8 116.246 H9 C5 H11 109.394
H9 C5 H13 108.783 H10 C6 H12 109.394
H10 C6 H14 108.783 H11 C5 H13 107.982
H12 C6 H14 107.982
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.693      
2 O -0.502      
3 N -0.531      
4 N -0.531      
5 C -0.235      
6 C -0.235      
7 H 0.251      
8 H 0.251      
9 H 0.123      
10 H 0.123      
11 H 0.171      
12 H 0.171      
13 H 0.125      
14 H 0.125      


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 -3.519 3.519
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.349 -1.787 0.000
y -1.787 -30.542 0.000
z 0.000 0.000 -36.177
Traceless
 xyz
x -3.989 -1.787 0.000
y -1.787 6.220 0.000
z 0.000 0.000 -2.231
Polar
3z2-r2-4.463
x2-y2-6.806
xy-1.787
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.166 -0.517 0.000
y -0.517 10.447 0.000
z 0.000 0.000 7.315


<r2> (average value of r2) Å2
<r2> 194.312
(<r2>)1/2 13.940