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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: B2PLYP=FULL/TZVP

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

Conformer 2 (CS)

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

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at B2PLYP=FULL/TZVP
 hartrees
Energy at 0K-225.171173
Energy at 298.15K 
HF Energy-224.923641
Nuclear repulsion energy123.909616
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/TZVP
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 3780 3607 59.92      
2 A1 3648 3481 8.05      
3 A1 1784 1702 505.54      
4 A1 1646 1570 0.05      
5 A1 1154 1101 0.51      
6 A1 970 925 11.92      
7 A1 486 464 2.64      
8 A2 337 321 0.00      
9 A2 440i 420i 0.00      
10 B1 753 718 2.52      
11 B1 554 528 11.00      
12 B1 346i 330i 497.07      
13 B2 3778 3605 44.53      
14 B2 3639 3472 74.70      
15 B2 1636 1561 250.96      
16 B2 1425 1360 263.38      
17 B2 995 950 17.53      
18 B2 571 545 12.49      

Unscaled Zero Point Vibrational Energy (zpe) 13184.2 cm-1
Scaled (by 0.9542) Zero Point Vibrational Energy (zpe) 12580.4 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/TZVP
ABC
0.37556 0.34731 0.18044

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.142
O2 0.000 0.000 1.362
N3 0.000 1.157 -0.598
N4 0.000 -1.157 -0.598
H5 0.000 2.022 -0.091
H6 0.000 1.179 -1.599
H7 0.000 -2.022 -0.091
H8 0.000 -1.179 -1.599

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.21951.37331.37332.03562.10342.03562.1034
O21.21952.27542.27542.48993.18742.48993.1874
N31.37332.27542.31401.00261.00223.21932.5422
N41.37332.27542.31403.21932.54221.00261.0022
H52.03562.48991.00263.21931.72804.04443.5392
H62.10343.18741.00222.54221.72803.53922.3589
H72.03562.48993.21931.00264.04443.53921.7280
H82.10343.18742.54221.00223.53922.35891.7280

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.057 C1 N3 H6 123.876
C1 N4 H7 117.057 C1 N4 H8 123.876
O2 C1 N3 122.593 O2 C1 N4 122.593
N3 C1 N4 114.813 H5 N3 H6 119.068
H7 N4 H8 119.068
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability