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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: MP2=FULL/6-31G

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 MP2=FULL/6-31G
 hartrees
Energy at 0K-224.318188
Energy at 298.15K-224.324233
HF Energy-223.883919
Nuclear repulsion energy121.675959
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 MP2=FULL/6-31G
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 3768 3580 41.20      
2 A 3628 3447 7.95      
3 A 1762 1674 276.36      
4 A 1700 1615 71.13      
5 A 1180 1121 2.91      
6 A 959 911 8.86      
7 A 522 496 25.41      
8 A 481 457 15.81      
9 A 314 298 79.19      
10 B 3767 3579 30.94      
11 B 3623 3442 62.85      
12 B 1708 1623 191.08      
13 B 1464 1391 294.55      
14 B 1067 1013 21.73      
15 B 734 698 141.65      
16 B 573 544 312.12      
17 B 561 533 16.23      
18 B 447 425 353.95      

Unscaled Zero Point Vibrational Energy (zpe) 14128.6 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 13423.6 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 MP2=FULL/6-31G
ABC
0.35613 0.33860 0.17430

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.138
O2 0.000 0.000 1.400
N3 0.000 1.171 -0.619
N4 0.000 -1.171 -0.619
H5 0.028 2.037 -0.101
H6 0.328 1.183 -1.574
H7 -0.028 -2.037 -0.101
H8 -0.328 -1.183 -1.574

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.26201.39421.39422.05062.10622.05062.1062
O21.26202.33392.33392.52963.21692.52963.2169
N31.39422.33392.34151.00961.00943.24912.5609
N41.39422.33392.34153.24912.56091.00961.0094
H52.05062.52961.00963.24911.72894.07343.5582
H62.10623.21691.00942.56091.72893.55822.4549
H72.05062.52963.24911.00964.07343.55821.7289
H82.10623.21692.56091.00943.55822.45491.7289

picture of Urea state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 116.179 C1 N3 H6 121.563
C1 N4 H7 116.179 C1 N4 H8 121.563
O2 C1 N3 122.885 O2 C1 N4 122.885
N3 C1 N4 114.230 H5 N3 H6 117.816
H7 N4 H8 117.816
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Energy calculated at MP2=FULL/6-31G
 hartrees
Energy at 0K-224.317768
Energy at 298.15K 
HF Energy-223.885584
Nuclear repulsion energy121.744331
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 MP2=FULL/6-31G
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' 3787 3598 46.00      
2 A' 3645 3463 10.32      
3 A' 1760 1672 306.28      
4 A' 1700 1615 78.01      
5 A' 1171 1113 1.95      
6 A' 964 916 9.64      
7 A' 718 682 59.32      
8 A' 562 534 106.99      
9 A' 485 461 2.34      
10 A' 349 332 765.28      
11 A" 3784 3596 35.37      
12 A" 3638 3457 69.21      
13 A" 1703 1618 201.52      
14 A" 1467 1394 311.69      
15 A" 1033 982 15.99      
16 A" 560 532 12.96      
17 A" 433 412 0.00      
18 A" 251i 239i 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 13753.4 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 13067.1 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 MP2=FULL/6-31G
ABC
0.35793 0.33854 0.17398

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.136 0.000
O2 -0.000 1.399 0.000
N3 -0.000 -0.611 1.172
N4 -0.000 -0.611 -1.172
H5 0.000 -0.104 2.043
H6 0.000 -1.619 1.197
H7 0.000 -0.104 -2.043
H8 0.000 -1.619 -1.197

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.26301.39021.39022.05712.12412.05712.1241
O21.26302.32712.32712.53603.24652.53603.2465
N31.39022.32712.34471.00811.00793.25542.5746
N41.39022.32712.34473.25542.57461.00811.0079
H52.05712.53601.00813.25541.73574.08633.5770
H62.12413.24651.00792.57461.73573.57702.3938
H72.05712.53603.25541.00814.08633.57701.7357
H82.12413.24652.57461.00793.57702.39381.7357

picture of Urea state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.237 C1 N3 H6 123.906
C1 N4 H7 117.237 C1 N4 H8 123.906
O2 C1 N3 122.511 O2 C1 N4 122.511
N3 C1 N4 114.978 H5 N3 H6 118.856
H7 N4 H8 118.856
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at MP2=FULL/6-31G
 hartrees
Energy at 0K-224.317768
Energy at 298.15K 
HF Energy-223.885577
Nuclear repulsion energy121.740241
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 MP2=FULL/6-31G
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 3787 3598 45.88      
2 A1 3645 3463 10.38      
3 A1 1759 1672 307.00      
4 A1 1700 1615 77.33      
5 A1 1171 1113 1.94      
6 A1 963 915 9.66      
7 A1 485 461 2.33      
8 A2 432 411 0.00      
9 A2 251i 239i 0.00      
10 B1 718 682 59.10      
11 B1 562 534 105.44      
12 B1 349 331 767.16      
13 B2 3785 3596 35.66      
14 B2 3638 3457 69.02      
15 B2 1702 1617 201.28      
16 B2 1467 1393 311.65      
17 B2 1033 982 16.06      
18 B2 559 532 12.95      

Unscaled Zero Point Vibrational Energy (zpe) 13752.2 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 13066.0 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 MP2=FULL/6-31G
ABC
0.35790 0.33851 0.17397

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.136
O2 0.000 0.000 1.399
N3 0.000 1.172 -0.611
N4 0.000 -1.172 -0.611
H5 0.000 2.043 -0.104
H6 0.000 1.196 -1.619
H7 0.000 -2.043 -0.104
H8 0.000 -1.196 -1.619

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.26301.39041.39042.05742.12392.05742.1239
O21.26302.32722.32722.53643.24642.53643.2464
N31.39042.32722.34491.00801.00793.25562.5743
N41.39042.32722.34493.25562.57431.00801.0079
H52.05742.53641.00803.25561.73584.08673.5766
H62.12393.24641.00792.57431.73583.57662.3929
H72.05742.53643.25561.00804.08673.57661.7358
H82.12393.24642.57431.00793.57662.39291.7358

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.252 C1 N3 H6 123.876
C1 N4 H7 117.252 C1 N4 H8 123.876
O2 C1 N3 122.512 O2 C1 N4 122.512
N3 C1 N4 114.975 H5 N3 H6 118.872
H7 N4 H8 118.872
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability