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-300.649193
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 3558 44.21      
2 A 3514 3456 35.94      
3 A 3478 3421 18.48      
4 A 3087 3037 9.66      
5 A 3071 3021 14.63      
6 A 2993 2944 10.60      
7 A 2917 2869 40.20      
8 A 2897 2850 37.08      
9 A 1780 1751 323.52      
10 A 1599 1573 176.11      
11 A 1528 1503 7.56      
12 A 1508 1483 13.05      
13 A 1494 1470 12.70      
14 A 1436 1413 192.21      
15 A 1411 1388 19.87      
16 A 1388 1366 93.16      
17 A 1318 1297 13.08      
18 A 1276 1255 1.60      
19 A 1205 1185 18.25      
20 A 1160 1141 1.84      
21 A 1103 1085 2.85      
22 A 1045 1028 11.64      
23 A 1002 986 0.26      
24 A 903 888 4.67      
25 A 841 828 1.81      
26 A 793 780 97.52      
27 A 554 545 10.70      
28 A 554 545 148.70      
29 A 532 524 12.95      
30 A 460 452 1.23      
31 A 371 365 0.07      
32 A 354 349 203.38      
33 A 275 271 0.57      
34 A 200 196 5.26      
35 A 94 93 0.80      
36 A 17 17 4.94      

Unscaled Zero Point Vibrational Energy (zpe) 25887.8 cm-1
Scaled (by 0.9836) Zero Point Vibrational Energy (zpe) 25463.2 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