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All results from a given calculation for NH2CONH2 (Urea)

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

Conformer 2 (CS)

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

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at B2PLYP=FULL/3-21G
 hartrees
Energy at 0K-223.726296
Energy at 298.15K 
HF Energy-223.581837
Nuclear repulsion energy122.564972
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/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 3539 30.81      
2 A1 3588 3416 5.61      
3 A1 1767 1682 300.17      
4 A1 1704 1622 4.51      
5 A1 1170 1113 0.93      
6 A1 948 903 7.54      
7 A1 491 467 2.58      
8 A2 455 433 0.00      
9 A2 118i 112i 0.00      
10 B1 790 752 105.76      
11 B1 579 551 61.66      
12 B1 413 393 648.63      
13 B2 3714 3535 33.85      
14 B2 3579 3407 45.02      
15 B2 1681 1600 159.48      
16 B2 1421 1353 301.05      
17 B2 1010 962 21.45      
18 B2 559 532 13.05      

Unscaled Zero Point Vibrational Energy (zpe) 13732.9 cm-1
Scaled (by 0.952) Zero Point Vibrational Energy (zpe) 13073.7 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/3-21G
ABC
0.36091 0.34559 0.17654

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/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
O21.24332.31222.31222.52733.22942.52733.2294
N31.38492.31222.31921.00861.00853.23352.5414
N41.38492.31222.31923.23352.54141.00861.0085
H52.05082.52731.00863.23351.73834.06953.5454
H62.11973.22941.00852.54141.73833.54542.3463
H72.05082.52733.23351.00864.06953.54541.7383
H82.11973.22942.54141.00853.54542.34631.7383

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.051 C1 N3 H6 123.909
C1 N4 H7 117.051 C1 N4 H8 123.909
O2 C1 N3 123.141 O2 C1 N4 123.141
N3 C1 N4 113.718 H5 N3 H6 119.040
H7 N4 H8 119.040
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability