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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: B2PLYP=FULL/6-31G(2df,p)

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=FULL/6-31G(2df,p)
Rotational Constants (cm-1) from geometry optimized at B2PLYP=FULL/6-31G(2df,p)
See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G(2df,p)
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Vibrational Frequencies calculated at B2PLYP=FULL/6-31G(2df,p)
Rotational Constants (cm-1) from geometry optimized at B2PLYP=FULL/6-31G(2df,p)
See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G(2df,p)
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at B2PLYP=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-225.112880
Energy at 298.15K 
HF Energy-224.855818
Nuclear repulsion energy124.086907
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=FULL/6-31G(2df,p)
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 3811 3811 54.83      
2 A1 3675 3675 7.95      
3 A1 1821 1821 390.11      
4 A1 1637 1637 2.66      
5 A1 1152 1152 0.40      
6 A1 977 977 8.26      
7 A1 479 479 2.99      
8 A2 380 380 0.00      
9 A2 426i 426i 0.00      
10 B1 785 785 7.96      
11 B1 579 579 8.79      
12 B1 330i 330i 438.98      
13 B2 3808 3808 41.61      
14 B2 3666 3666 73.22      
15 B2 1629 1629 254.81      
16 B2 1436 1436 200.41      
17 B2 991 991 12.16      
18 B2 562 562 14.71      

Unscaled Zero Point Vibrational Energy (zpe) 13316.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13316.6 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=FULL/6-31G(2df,p)
ABC
0.37570 0.34912 0.18096

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.144
O2 0.000 0.000 1.361
N3 0.000 1.154 -0.598
N4 0.000 -1.154 -0.598
H5 0.000 2.017 -0.091
H6 0.000 1.177 -1.599
H7 0.000 -2.017 -0.091
H8 0.000 -1.177 -1.599

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.21671.37201.37202.03102.10302.03102.1030
O21.21672.27352.27352.48553.18502.48553.1850
N31.37202.27352.30781.00141.00083.21162.5366
N41.37202.27352.30783.21162.53661.00141.0008
H52.03102.48551.00143.21161.72614.03483.5324
H62.10303.18501.00082.53661.72613.53242.3541
H72.03102.48553.21161.00144.03483.53241.7261
H82.10303.18502.53661.00083.53242.35411.7261

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 116.825 C1 N3 H6 124.072
C1 N4 H7 116.825 C1 N4 H8 124.072
O2 C1 N3 122.748 O2 C1 N4 122.748
N3 C1 N4 114.503 H5 N3 H6 119.103
H7 N4 H8 119.103
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability