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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: MP3=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 MP3=FULL/6-31G(2df,p)
Rotational Constants (cm-1) from geometry optimized at MP3=FULL/6-31G(2df,p)
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G(2df,p)
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Vibrational Frequencies calculated at MP3=FULL/6-31G(2df,p)
Rotational Constants (cm-1) from geometry optimized at MP3=FULL/6-31G(2df,p)
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G(2df,p)
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at MP3=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-224.823147
Energy at 298.15K 
HF Energy-224.014173
Nuclear repulsion energy124.793188
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/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 3880 3880 75.45      
2 A1 3748 3748 13.35      
3 A1 1890 1890 478.57      
4 A1 1663 1663 6.90      
5 A1 1180 1180 0.33      
6 A1 1005 1005 10.05      
7 A1 489 489 2.84      
8 A2 397 397 0.00      
9 A2 429i 429i 0.00      
10 B1 823 823 11.91      
11 B1 591 591 8.69      
12 B1 324i 324i 471.04      
13 B2 3877 3877 38.49      
14 B2 3740 3740 96.93      
15 B2 1658 1658 298.32      
16 B2 1475 1475 193.59      
17 B2 1017 1017 8.32      
18 B2 579 579 16.62      

Unscaled Zero Point Vibrational Energy (zpe) 13629.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13629.8 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 MP3=FULL/6-31G(2df,p)
ABC
0.38072 0.35266 0.18308

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.145
O2 0.000 0.000 1.351
N3 0.000 1.148 -0.594
N4 0.000 -1.148 -0.594
H5 0.000 2.010 -0.090
H6 0.000 1.167 -1.591
H7 0.000 -2.010 -0.090
H8 0.000 -1.167 -1.591

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.20661.36531.36532.02372.09162.02372.0916
O21.20662.25892.25892.47363.16532.47363.1653
N31.36532.25892.29610.99830.99723.19802.5204
N41.36532.25892.29613.19802.52040.99830.9972
H52.02372.47360.99833.19801.72144.02003.5134
H62.09163.16530.99722.52041.72143.51342.3336
H72.02372.47363.19800.99834.02003.51341.7214
H82.09163.16532.52040.99723.51342.33361.7214

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 116.938 C1 N3 H6 123.840
C1 N4 H7 116.938 C1 N4 H8 123.840
O2 C1 N3 122.763 O2 C1 N4 122.763
N3 C1 N4 114.473 H5 N3 H6 119.222
H7 N4 H8 119.222
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability