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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: MP4=FULL/6-311G**

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/6-311G**
 hartrees
Energy at 0K-224.868387
Energy at 298.15K-224.874685
HF Energy-224.051430
Nuclear repulsion energy123.161681
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/6-311G**
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 3699 3557        
2 A 3589 3451        
3 A 1824 1754        
4 A 1637 1574        
5 A 1199 1152        
6 A 942 906        
7 A 701 674        
8 A 474 456        
9 A 401 385        
10 B 3699 3557        
11 B 3586 3448        
12 B 1646 1582        
13 B 1413 1359        
14 B 1072 1030        
15 B 805 774        
16 B 602 578        
17 B 560 538        
18 B 453 436        

Unscaled Zero Point Vibrational Energy (zpe) 14150.1 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 13605.3 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/6-311G**
ABC
0.36512 0.34557 0.17977

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311G**

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 1.371
N3 0.000 1.162 -0.625
N4 0.000 -1.162 -0.625
H5 0.248 1.974 -0.076
H6 0.528 1.094 -1.485
H7 -0.248 -1.974 -0.076
H8 -0.528 -1.094 -1.485

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.21821.39851.39852.00212.03912.00212.0391
O21.21822.30982.30982.45943.10352.45943.1035
N31.39852.30982.32451.01081.01133.19332.4718
N41.39852.30982.32453.19332.47181.01081.0113
H52.00212.45941.01083.19331.68463.97823.4641
H62.03913.10351.01132.47181.68463.46412.4302
H72.00212.45943.19331.01083.97823.46411.6846
H82.03913.10352.47181.01133.46412.43021.6846

picture of Urea state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 111.386 C1 N3 H6 114.639
C1 N4 H7 111.386 C1 N4 H8 114.639
O2 C1 N3 123.794 O2 C1 N4 123.794
N3 C1 N4 112.412 H5 N3 H6 112.838
H7 N4 H8 112.838
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Energy calculated at MP4=FULL/6-311G**
 hartrees
Energy at 0K-224.865704
Energy at 298.15K-224.871733
HF Energy-224.049355
Nuclear repulsion energy123.175803
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/6-311G**
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' 3723 3579        
2 A' 3608 3469        
3 A' 1816 1746        
4 A' 1650 1587        
5 A' 1193 1148        
6 A' 949 913        
7 A' 779 749        
8 A' 582 559        
9 A' 513 493        
10 A' 461 443        
11 A" 3720 3576        
12 A" 3600 3461        
13 A" 1637 1574        
14 A" 1417 1363        
15 A" 1035 995        
16 A" 572 550        
17 A" 510 490        
18 A" 248 239        

Unscaled Zero Point Vibrational Energy (zpe) 14006.1 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 13466.8 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 MP4=FULL/6-311G**
ABC
0.36884 0.34311 0.17925

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.008 0.147 0.000
O2 0.049 1.366 0.000
N3 0.049 -0.614 1.168
N4 0.049 -0.614 -1.168
H5 -0.201 -0.074 1.983
H6 -0.364 -1.535 1.141
H7 -0.201 -0.074 -1.983
H8 -0.364 -1.535 -1.141

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.21961.39461.39462.00652.06652.00652.0665
O21.21962.29892.29892.46413.14472.46413.1447
N31.39462.29892.33531.00951.00953.20652.5200
N41.39462.29892.33533.20652.52001.00951.0095
H52.00652.46411.00953.20651.69333.96653.4529
H62.06653.14471.00952.52001.69333.45292.2829
H72.00652.46413.20651.00953.96653.45291.6933
H82.06653.14472.52001.00953.45292.28291.6933

picture of Urea state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 112.162 C1 N3 H6 117.650
C1 N4 H7 112.162 C1 N4 H8 117.650
O2 C1 N3 123.002 O2 C1 N4 123.002
N3 C1 N4 113.705 H5 N3 H6 114.009
H7 N4 H8 114.009
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at MP4=FULL/6-311G**
 hartrees
Energy at 0K-224.862809
Energy at 298.15K 
HF Energy-224.049955
Nuclear repulsion energy123.459381
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/6-311G**
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 3800 3654        
2 A1 3667 3526        
3 A1 1812 1743        
4 A1 1635 1572        
5 A1 1145 1101        
6 A1 967 930        
7 A1 478 460        
8 A2 333 320        
9 A2 559i 538i        
10 B1 754 725        
11 B1 552 530        
12 B1 482i 463i        
13 B2 3798 3651        
14 B2 3659 3518        
15 B2 1632 1570        
16 B2 1426 1371        
17 B2 989 951        
18 B2 556 534        

Unscaled Zero Point Vibrational Energy (zpe) 13080.4 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 12576.8 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 MP4=FULL/6-311G**
ABC
0.37020 0.34682 0.17906

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.148
O2 0.000 0.000 1.371
N3 0.000 1.158 -0.603
N4 0.000 -1.158 -0.603
H5 0.000 2.027 -0.099
H6 0.000 1.173 -1.607
H7 0.000 -2.027 -0.099
H8 0.000 -1.173 -1.607

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.22231.38041.38042.04202.11132.04202.1113
O21.22232.28832.28832.50393.20052.50393.2005
N31.38042.28832.31591.00441.00423.22452.5379
N41.38042.28832.31593.22452.53791.00441.0042
H52.04202.50391.00443.22451.73294.05393.5373
H62.11133.20051.00422.53791.73293.53732.3457
H72.04202.50393.22451.00444.05393.53731.7329
H82.11133.20052.53791.00423.53732.34571.7329

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 116.919 C1 N3 H6 123.830
C1 N4 H7 116.919 C1 N4 H8 123.830
O2 C1 N3 122.981 O2 C1 N4 122.981
N3 C1 N4 114.039 H5 N3 H6 119.251
H7 N4 H8 119.251
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability