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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/3-21G
Rotational Constants (cm-1) from geometry optimized at B2PLYP=FULLultrafine/3-21G
See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Vibrational Frequencies calculated at B2PLYP=FULLultrafine/3-21G
Rotational Constants (cm-1) from geometry optimized at B2PLYP=FULLultrafine/3-21G
See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at B2PLYP=FULLultrafine/3-21G
 hartrees
Energy at 0K-223.726295
Energy at 298.15K 
HF Energy-223.581836
Nuclear repulsion energy122.565321
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 B2PLYP=FULLultrafine/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 3717 3717 30.77      
2 A1 3588 3588 5.61      
3 A1 1767 1767 300.36      
4 A1 1704 1704 4.38      
5 A1 1169 1169 0.92      
6 A1 948 948 7.55      
7 A1 491 491 2.58      
8 A2 455 455 0.00      
9 A2 118i 118i 0.00      
10 B1 790 790 105.65      
11 B1 579 579 61.76      
12 B1 413 413 648.62      
13 B2 3714 3714 33.89      
14 B2 3579 3579 45.01      
15 B2 1681 1681 159.54      
16 B2 1421 1421 300.97      
17 B2 1010 1010 21.46      
18 B2 559 559 13.05      

Unscaled Zero Point Vibrational Energy (zpe) 13733.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13733.2 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 B2PLYP=FULLultrafine/3-21G
ABC
0.36090 0.34560 0.17654

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.147
O2 0.000 0.000 1.390
N3 0.000 1.160 -0.610
N4 0.000 -1.160 -0.610
H5 0.000 2.035 -0.109
H6 0.000 1.173 -1.619
H7 0.000 -2.035 -0.109
H8 0.000 -1.173 -1.619

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.24331.38491.38492.05082.11972.05082.1197
O21.24332.31222.31222.52743.22942.52743.2294
N31.38492.31222.31921.00861.00853.23352.5413
N41.38492.31222.31923.23352.54131.00861.0085
H52.05082.52741.00863.23351.73834.06953.5453
H62.11973.22941.00852.54131.73833.54532.3461
H72.05082.52743.23351.00864.06953.54531.7383
H82.11973.22942.54131.00853.54532.34611.7383

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.056 C1 N3 H6 123.907
C1 N4 H7 117.056 C1 N4 H8 123.907
O2 C1 N3 123.143 O2 C1 N4 123.143
N3 C1 N4 113.714 H5 N3 H6 119.037
H7 N4 H8 119.037
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability