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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: MP3=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 3 yes C2V 1A1

Conformer 1 (C2)

Jump to S1C2 S1C3
Vibrational Frequencies calculated at MP3=FULL/3-21G
Rotational Constants (cm-1) from geometry optimized at MP3=FULL/3-21G
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/3-21G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Vibrational Frequencies calculated at MP3=FULL/3-21G
Rotational Constants (cm-1) from geometry optimized at MP3=FULL/3-21G
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/3-21G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at MP3=FULL/3-21G
 hartrees
Energy at 0K-223.157367
Energy at 298.15K 
HF Energy-222.734723
Nuclear repulsion energy122.681837
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 MP3=FULL/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 A1 3747 3747 35.55      
2 A1 3622 3622 10.01      
3 A1 1807 1807 376.39      
4 A1 1735 1735 0.09      
5 A1 1188 1188 1.81      
6 A1 960 960 11.42      
7 A1 498 498 2.43      
8 A2 438 438 0.00      
9 A2 240i 240i 0.00      
10 B1 785 785 94.34      
11 B1 573 573 66.14      
12 B1 349 349 714.46      
13 B2 3744 3744 27.48      
14 B2 3615 3615 50.71      
15 B2 1710 1710 160.36      
16 B2 1437 1437 325.86      
17 B2 1025 1025 20.16      
18 B2 574 574 14.26      

Unscaled Zero Point Vibrational Energy (zpe) 13783.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13783.2 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 MP3=FULL/3-21G
ABC
0.36276 0.34494 0.17681

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.148
O2 0.000 0.000 1.386
N3 0.000 1.161 -0.609
N4 0.000 -1.161 -0.609
H5 0.000 2.036 -0.110
H6 0.000 1.171 -1.616
H7 0.000 -2.036 -0.110
H8 0.000 -1.171 -1.616

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.23811.38591.38592.05272.11762.05272.1176
O21.23812.30822.30822.52693.22262.52693.2226
N31.38592.30822.32191.00771.00733.23612.5406
N41.38592.30822.32193.23612.54061.00771.0073
H52.05272.52691.00773.23611.73694.07293.5439
H62.11763.22261.00732.54061.73693.54392.3429
H72.05272.52693.23611.00774.07293.54391.7369
H82.11763.22262.54061.00733.54392.34291.7369

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.221 C1 N3 H6 123.700
C1 N4 H7 117.221 C1 N4 H8 123.700
O2 C1 N3 123.103 O2 C1 N4 123.103
N3 C1 N4 113.794 H5 N3 H6 119.079
H7 N4 H8 119.079
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability