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: BLYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at BLYP/6-31+G**
 hartrees
Energy at 0K-303.804164
Energy at 298.15K-303.814328
Nuclear repulsion energy240.884729
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 BLYP/6-31+G**
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 3594 3575 31.34      
2 A 3517 3498 25.45      
3 A 3469 3451 10.51      
4 A 3045 3029 25.88      
5 A 3033 3017 32.99      
6 A 2968 2952 25.08      
7 A 2945 2930 33.07      
8 A 2922 2906 47.96      
9 A 1693 1684 506.53      
10 A 1581 1572 140.35      
11 A 1490 1482 2.64      
12 A 1471 1464 8.43      
13 A 1464 1456 7.73      
14 A 1412 1405 5.17      
15 A 1384 1376 1.56      
16 A 1366 1359 278.41      
17 A 1324 1317 50.55      
18 A 1263 1256 5.48      
19 A 1147 1141 13.94      
20 A 1128 1122 2.13      
21 A 1079 1074 42.14      
22 A 1022 1016 16.29      
23 A 952 947 1.70      
24 A 862 858 2.05      
25 A 803 799 1.13      
26 A 723 719 32.67      
27 A 573 570 61.25      
28 A 533 531 11.06      
29 A 514 511 126.89      
30 A 475 472 27.58      
31 A 375 373 115.05      
32 A 349 347 2.25      
33 A 260 258 2.03      
34 A 190 189 3.35      
35 A 105 104 6.05      
36 A 52 52 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 25540.2 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 25404.8 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 BLYP/6-31+G**
ABC
0.27954 0.06488 0.05398

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.659 -0.221 -0.015
H2 -2.752 -1.026 0.734
H3 -3.480 0.492 0.157
H4 -2.788 -0.662 -1.016
C5 -1.301 0.493 0.105
H6 -1.259 1.308 -0.641
H7 -1.203 0.957 1.105
N8 -0.196 -0.452 -0.144
H9 -0.392 -1.443 -0.010
N10 1.501 1.185 0.040
H11 2.496 1.352 -0.097
H12 0.887 1.875 -0.390
C13 1.162 -0.174 -0.020
O14 2.018 -1.071 0.059

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 N8 H9 N10 H11 H12 C13 O14
C11.10311.10101.10191.53832.16622.18172.47742.57554.39145.39014.13653.82154.7542
H21.10311.77971.78852.19193.09332.54272.76292.50934.84285.82074.78764.07584.8175
H31.10101.77971.78512.17922.49762.50943.43053.64835.03026.04284.61354.69325.7169
H41.10191.78851.78512.19072.52203.10342.74322.71414.78785.72904.50974.10354.9421
C51.53832.19192.17922.19071.10631.10721.47522.14182.88733.89862.63572.55533.6697
H62.16623.09332.49762.52201.10631.78212.11532.95302.84513.79402.23372.90614.1096
H72.18172.54272.50943.10341.10721.78212.13572.76822.91543.90982.72932.85313.9480
N82.47742.76293.43052.74321.47522.11532.13571.01952.36483.24052.57861.39182.3078
H92.57552.50933.64832.71412.14182.95302.76821.01953.23934.01993.57692.00662.4395
N104.39144.84285.03024.78782.88732.84512.91542.36483.23931.01821.01891.40192.3149
H115.39015.82076.04285.72903.89863.79403.90983.24054.01991.01821.71692.02812.4748
H124.13654.78764.61354.50972.63572.23372.72932.57863.57691.01891.71692.10083.1880
C133.82154.07584.69324.10352.55532.90612.85311.39182.00661.40192.02812.10081.2423
O144.75424.81755.71694.94213.66974.10963.94802.30782.43952.31492.47483.18801.2423

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 108.897 C1 C5 H7 110.046
C1 C5 N8 110.571 H2 C1 H3 107.690
H2 C1 H4 108.411 H2 C1 C5 111.091
H3 C1 H4 108.252 H3 C1 C5 110.214
H4 C1 C5 111.070 C5 N8 H9 117.132
C5 N8 C13 126.043 H6 C5 H7 107.244
H6 C5 N8 109.221 H7 C5 N8 110.780
N8 C13 N10 115.653 N8 C13 O14 122.252
H9 N8 C13 111.713 N10 C13 O14 122.083
H11 N10 H12 114.881 H11 N10 C13 112.901
H12 N10 C13 119.575
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.621      
2 H 0.157      
3 H 0.151      
4 H 0.165      
5 C -0.071      
6 H 0.126      
7 H 0.152      
8 N -0.401      
9 H 0.298      
10 N -0.559      
11 H 0.311      
12 H 0.264      
13 C 0.558      
14 O -0.529      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.491 2.833 -0.553 4.530
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.932 7.294 -1.686
y 7.294 -36.469 -1.960
z -1.686 -1.960 -39.462
Traceless
 xyz
x -1.966 7.294 -1.686
y 7.294 3.228 -1.960
z -1.686 -1.960 -1.262
Polar
3z2-r2-2.524
x2-y2-3.463
xy7.294
xz-1.686
yz-1.960


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


<r2> (average value of r2) Å2
<r2> 208.889
(<r2>)1/2 14.453