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 NH2CONHC2H5 (Urea, ethyl-)

using model chemistry: B3LYP/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP/CEP-31G
 hartrees
Energy at 0K-57.486558
Energy at 298.15K-57.496850
Nuclear repulsion energy134.404393
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 B3LYP/CEP-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 3776 3657 31.29      
2 A 3648 3533 28.55      
3 A 3623 3509 30.15      
4 A 3135 3036 55.92      
5 A 3130 3031 72.83      
6 A 3043 2947 31.01      
7 A 3041 2945 54.68      
8 A 3003 2908 63.81      
9 A 1679 1626 399.66      
10 A 1626 1574 242.58      
11 A 1540 1491 4.57      
12 A 1513 1465 14.72      
13 A 1505 1458 10.49      
14 A 1456 1410 78.80      
15 A 1434 1389 30.99      
16 A 1426 1381 266.29      
17 A 1368 1325 18.27      
18 A 1299 1258 0.33      
19 A 1195 1157 19.82      
20 A 1172 1135 2.95      
21 A 1103 1068 11.50      
22 A 1057 1024 14.11      
23 A 991 960 0.40      
24 A 889 861 3.39      
25 A 828 802 1.94      
26 A 738 715 81.10      
27 A 552 534 8.63      
28 A 551 533 211.65      
29 A 522 506 16.80      
30 A 495 479 1.67      
31 A 405 392 229.72      
32 A 354 343 0.01      
33 A 256 248 0.04      
34 A 192 186 6.27      
35 A 106 102 0.78      
36 A 64 62 1.25      

Unscaled Zero Point Vibrational Energy (zpe) 26357.3 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 25524.4 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 B3LYP/CEP-31G
ABC
0.27655 0.06410 0.05310

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.647 -0.215 0.000
H2 2.756 -0.850 -0.896
H3 3.468 0.521 0.000
H4 2.756 -0.850 0.897
C5 1.274 0.508 -0.000
H6 1.201 1.158 0.894
H7 1.202 1.158 -0.894
N8 0.174 -0.482 -0.000
H9 0.394 -1.476 -0.000
N10 -1.542 1.157 0.000
H11 -2.535 1.363 0.000
H12 -0.874 1.920 0.000
C13 -1.192 -0.198 -0.000
O14 -2.074 -1.116 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 N8 H9 N10 H11 H12 C13 O14
C11.10431.10301.10431.55092.18442.18442.48692.58114.40765.41644.11743.83834.8059
H21.10431.78651.79342.20063.10722.53932.75762.60224.82775.80484.65364.10044.9197
H31.10301.78651.78662.19382.51812.51803.44343.66545.05026.06164.56204.71495.7789
H41.10431.79341.78662.20062.53923.10722.75772.60264.82735.80444.65314.10014.9195
C51.55092.20062.19382.20061.10801.10801.48012.16982.89023.90402.57102.56503.7213
H62.18443.10722.51812.53921.10801.78822.13232.89632.88553.84722.38492.89254.0867
H72.18442.53932.51803.10721.10801.78822.13242.89612.88623.84802.38572.89294.0871
N82.48692.75763.44342.75771.48012.13232.13241.01732.37353.27792.62091.39512.3357
H92.58112.60223.66542.60262.16982.89632.89611.01733.26834.07903.62462.03652.4944
N104.40764.82775.05024.82732.89022.88552.88622.37353.26831.01391.01341.40002.3348
H115.41645.80486.06165.80443.90403.84723.84803.27794.07901.01391.75132.05952.5217
H124.11744.65364.56204.65312.57102.38492.38572.62093.62461.01341.75132.14153.2642
C133.83834.10044.71494.10012.56502.89252.89291.39512.03651.40002.05952.14151.2733
O144.80594.91975.77894.91953.72134.08674.08712.33572.49442.33482.52173.26421.2733

picture of Urea, ethyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 109.350 C1 C5 H7 109.351
C1 C5 N8 110.241 H2 C1 H3 108.068
H2 C1 H4 108.587 H2 C1 C5 110.828
H3 C1 H4 108.071 H3 C1 C5 110.363
H4 C1 C5 110.828 C5 N8 H9 119.488
C5 N8 C13 126.254 H6 C5 H7 107.599
H6 C5 N8 110.124 H7 C5 N8 110.127
N8 C13 N10 116.249 N8 C13 O14 122.110
H9 N8 C13 114.258 N10 C13 O14 121.641
H11 N10 H12 119.500 H11 N10 C13 116.203
H12 N10 C13 124.298
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.391      
2 H 0.148      
3 H 0.160      
4 H 0.148      
5 C -0.290      
6 H 0.151      
7 H 0.151      
8 N -0.168      
9 H 0.327      
10 N -0.416      
11 H 0.326      
12 H 0.316      
13 C -0.290      
14 O -0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.058 3.569 0.000 5.404
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.067 -8.950 -0.001
y -8.950 -34.616 0.002
z -0.001 0.002 -38.545
Traceless
 xyz
x -3.486 -8.950 -0.001
y -8.950 4.690 0.002
z -0.001 0.002 -1.204
Polar
3z2-r2-2.408
x2-y2-5.451
xy-8.950
xz-0.001
yz0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.184 0.297 0.002
y 0.297 7.472 0.001
z 0.002 0.001 4.805


<r2> (average value of r2) Å2
<r2> 171.100
(<r2>)1/2 13.081