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: LSDA/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 LSDA/3-21G*
 hartrees
Energy at 0K-300.638984
Energy at 298.15K-300.649176
Nuclear repulsion energy244.228862
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 LSDA/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 3617 3552 44.21      
2 A 3514 3451 35.94      
3 A 3478 3416 18.48      
4 A 3087 3032 9.66      
5 A 3071 3016 14.63      
6 A 2993 2939 10.60      
7 A 2917 2865 40.20      
8 A 2897 2845 37.08      
9 A 1780 1748 323.52      
10 A 1599 1570 176.11      
11 A 1528 1501 7.56      
12 A 1508 1481 13.05      
13 A 1494 1467 12.70      
14 A 1436 1410 192.21      
15 A 1411 1385 19.87      
16 A 1388 1363 93.16      
17 A 1318 1295 13.08      
18 A 1276 1253 1.60      
19 A 1205 1183 18.25      
20 A 1160 1139 1.84      
21 A 1103 1083 2.85      
22 A 1045 1026 11.64      
23 A 1002 984 0.26      
24 A 903 887 4.67      
25 A 841 826 1.81      
26 A 793 779 97.52      
27 A 554 544 10.70      
28 A 554 544 148.70      
29 A 532 523 12.95      
30 A 460 452 1.23      
31 A 371 364 0.07      
32 A 354 348 203.38      
33 A 275 270 0.57      
34 A 200 196 5.26      
35 A 94 92 0.80      
36 A 17 16 4.94      

Unscaled Zero Point Vibrational Energy (zpe) 25887.8 cm-1
Scaled (by 0.982) Zero Point Vibrational Energy (zpe) 25421.8 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 LSDA/3-21G*
ABC
0.28689 0.06767 0.05593

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.600 -0.239 0.002
H2 2.689 -0.877 -0.895
H3 3.435 0.480 0.003
H4 2.686 -0.877 0.899
C5 1.261 0.477 -0.001
H6 1.196 1.135 0.895
H7 1.200 1.135 -0.897
N8 0.186 -0.486 -0.002
H9 0.403 -1.485 -0.003
N10 -1.390 1.184 0.001
H11 -2.366 1.474 0.002
H12 -0.654 1.890 -0.003
C13 -1.152 -0.168 -0.000
O14 -2.052 -1.022 0.001

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 N8 H9 N10 H11 H12 C13 O14
C11.10451.10241.10451.51792.15752.15742.42592.52574.23535.25293.88763.75224.7169
H21.10451.79041.79452.16173.07942.50362.68612.52844.65705.64724.43014.00734.8273
H31.10241.79041.79052.17432.49742.49703.38953.61364.87585.88594.32474.63265.6888
H41.10451.79451.79052.16172.50343.07932.68592.52954.65445.64414.42944.00524.8246
C51.51792.16172.17432.16171.11361.11361.44272.14122.74323.76172.37942.49743.6357
H62.15753.07942.49742.50341.11361.79162.11042.88142.73653.68832.19012.83084.0002
H72.15742.50362.49703.07931.11361.79162.11082.88092.74103.69322.19162.83424.0038
N82.42592.68613.38952.68591.44272.11042.11081.02222.29613.21822.51991.37552.3014
H92.52572.52843.61362.52952.14122.88142.88091.02223.21504.05263.53632.03772.4982
N104.23534.65704.87584.65442.74322.73652.74102.29613.21501.01881.01991.37252.3025
H115.25295.64725.88595.64413.76173.68833.69323.21824.05261.01881.76262.04212.5150
H123.88764.43014.32474.42942.37942.19012.19162.51993.53631.01991.76262.11723.2296
C133.75224.00734.63264.00522.49742.83082.83421.37552.03771.37252.04212.11721.2403
O144.71694.82735.68884.82463.63574.00024.00382.30142.49822.30252.51503.22961.2403

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 109.179 C1 C5 H7 109.171
C1 C5 N8 110.022 H2 C1 H3 108.440
H2 C1 H4 108.652 H2 C1 C5 110.039
H3 C1 H4 108.449 H3 C1 C5 111.163
H4 C1 C5 110.034 C5 N8 H9 119.631
C5 N8 C13 124.769 H6 C5 H7 107.103
H6 C5 N8 110.633 H7 C5 N8 110.668
N8 C13 N10 113.346 N8 C13 O14 123.146
H9 N8 C13 115.600 N10 C13 O14 123.508
H11 N10 H12 119.661 H11 N10 C13 116.511
H12 N10 C13 123.828
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.656      
2 H 0.229      
3 H 0.228      
4 H 0.229      
5 C -0.272      
6 H 0.216      
7 H 0.216      
8 N -0.657      
9 H 0.328      
10 N -0.760      
11 H 0.329      
12 H 0.314      
13 C 0.740      
14 O -0.485      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.269 2.727 -0.005 4.257
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.274 -7.100 0.003
y -7.100 -32.723 -0.002
z 0.003 -0.002 -37.890
Traceless
 xyz
x -2.968 -7.100 0.003
y -7.100 5.360 -0.002
z 0.003 -0.002 -2.391
Polar
3z2-r2-4.783
x2-y2-5.552
xy-7.100
xz0.003
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.566 0.193 -0.005
y 0.193 7.023 -0.000
z -0.005 -0.000 4.111


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000