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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: MP4=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
1 2 no CS 1A'
1 3 no C2V 1A1

Conformer 1 (C2)

Jump to S1C2 S1C3
Energy calculated at MP4=FULL/cc-pVDZ
 hartrees
Energy at 0K-224.713095
Energy at 298.15K-224.719366
HF Energy-224.007431
Nuclear repulsion energy122.667733
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 MP4=FULL/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3675 3546        
2 A 3559 3435        
3 A 1831 1767        
4 A 1623 1567        
5 A 1196 1154        
6 A 942 909        
7 A 703 678        
8 A 469 453        
9 A 397 383        
10 B 3675 3546        
11 B 3558 3433        
12 B 1635 1578        
13 B 1418 1368        
14 B 1077 1039        
15 B 809 780        
16 B 599 578        
17 B 555 536        
18 B 435 420        

Unscaled Zero Point Vibrational Energy (zpe) 14076.8 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 13585.5 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 MP4=FULL/cc-pVDZ
ABC
0.36169 0.34350 0.17870

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.152
O2 0.000 0.000 1.376
N3 0.000 1.166 -0.630
N4 0.000 -1.166 -0.630
H5 0.282 1.970 -0.071
H6 0.559 1.087 -1.479
H7 -0.282 -1.970 -0.071
H8 -0.559 -1.087 -1.479

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.22391.40401.40402.00262.03802.00262.0380
O21.22392.32022.32022.46073.10522.46073.1052
N31.40402.32022.33221.01881.01923.19792.4718
N41.40402.32022.33223.19792.47181.01881.0192
H52.00262.46071.01883.19791.68423.98023.4690
H62.03803.10521.01922.47181.68423.46902.4450
H72.00262.46073.19791.01883.98023.46901.6842
H82.03803.10522.47181.01923.46902.44501.6842

picture of Urea state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 110.482 C1 N3 H6 113.542
C1 N4 H7 110.482 C1 N4 H8 113.542
O2 C1 N3 123.847 O2 C1 N4 123.847
N3 C1 N4 112.307 H5 N3 H6 111.456
H7 N4 H8 111.456
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Energy calculated at MP4=FULL/cc-pVDZ
 hartrees
Energy at 0K-224.710210
Energy at 298.15K-224.716218
HF Energy-224.005076
Nuclear repulsion energy122.673380
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 MP4=FULL/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3698 3569        
2 A' 3579 3454        
3 A' 1825 1761        
4 A' 1639 1582        
5 A' 1195 1154        
6 A' 950 917        
7 A' 781 754        
8 A' 586 566        
9 A' 505 488        
10 A' 449 433        
11 A" 3695 3566        
12 A" 3571 3447        
13 A" 1624 1567        
14 A" 1420 1371        
15 A" 1041 1004        
16 A" 576 556        
17 A" 523 505        
18 A" 233 225        

Unscaled Zero Point Vibrational Energy (zpe) 13944.6 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 13458.0 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 MP4=FULL/cc-pVDZ
ABC
0.36532 0.34089 0.17817

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.012 0.147 0.000
O2 0.054 1.371 0.000
N3 0.054 -0.619 1.171
N4 0.054 -0.619 -1.171
H5 -0.222 -0.069 1.981
H6 -0.409 -1.524 1.139
H7 -0.222 -0.069 -1.981
H8 -0.409 -1.524 -1.139

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.22491.40051.40052.00672.06572.00672.0657
O21.22492.30972.30972.46483.14572.46483.1457
N31.40052.30972.34291.01741.01723.21242.5240
N41.40052.30972.34293.21242.52401.01741.0172
H52.00672.46481.01743.21241.69233.96273.4480
H62.06573.14571.01722.52401.69233.44802.2774
H72.00672.46483.21241.01743.96273.44801.6923
H82.06573.14572.52401.01723.44802.27741.6923

picture of Urea state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 111.189 C1 N3 H6 116.494
C1 N4 H7 111.189 C1 N4 H8 116.494
O2 C1 N3 123.082 O2 C1 N4 123.082
N3 C1 N4 113.534 H5 N3 H6 112.557
H7 N4 H8 112.557
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at MP4=FULL/cc-pVDZ
 hartrees
Energy at 0K-224.706771
Energy at 298.15K 
HF Energy-224.005039
Nuclear repulsion energy123.047261
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 MP4=FULL/cc-pVDZ
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 3795 3663        
2 A1 3650 3522        
3 A1 1820 1756        
4 A1 1611 1555        
5 A1 1134 1095        
6 A1 974 940        
7 A1 474 458        
8 A2 366 353        
9 A2 524i 506i        
10 B1 763 737        
11 B1 569 550        
12 B1 452i 437i        
13 B2 3793 3661        
14 B2 3643 3515        
15 B2 1619 1563        
16 B2 1432 1382        
17 B2 983 949        
18 B2 555 536        

Unscaled Zero Point Vibrational Energy (zpe) 13102.8 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 12645.5 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 MP4=FULL/cc-pVDZ
ABC
0.36701 0.34573 0.17803

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.149
O2 0.000 0.000 1.377
N3 0.000 1.159 -0.605
N4 0.000 -1.159 -0.605
H5 0.000 2.035 -0.100
H6 0.000 1.172 -1.615
H7 0.000 -2.035 -0.100
H8 0.000 -1.172 -1.615

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.22811.38301.38302.05002.11802.05002.1180
O21.22812.29622.29622.51443.21352.51443.2135
N31.38302.29622.31871.01071.01013.23392.5411
N41.38302.29622.31873.23392.54111.01071.0101
H52.05002.51441.01073.23391.74334.06973.5470
H62.11803.21351.01012.54111.74333.54702.3447
H72.05002.51443.23391.01074.06973.54701.7433
H82.11803.21352.54111.01013.54702.34471.7433

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 116.983 C1 N3 H6 123.776
C1 N4 H7 116.983 C1 N4 H8 123.776
O2 C1 N3 123.038 O2 C1 N4 123.038
N3 C1 N4 113.924 H5 N3 H6 119.241
H7 N4 H8 119.241
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability