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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: CCD/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 CCD/6-311G*
 hartrees
Energy at 0K-224.718348
Energy at 298.15K-224.724731
HF Energy-224.040412
Nuclear repulsion energy123.850346
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 CCD/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 3735 3567 23.79      
2 A 3628 3465 2.88      
3 A 1903 1817 422.88      
4 A 1717 1640 0.14      
5 A 1243 1187 4.63      
6 A 974 931 6.52      
7 A 715 682 148.15      
8 A 486 464 2.85      
9 A 414 396 83.67      
10 B 3735 3567 17.05      
11 B 3625 3462 35.91      
12 B 1722 1645 200.85      
13 B 1464 1398 199.33      
14 B 1114 1064 25.15      
15 B 842 804 189.29      
16 B 622 594 308.64      
17 B 584 558 28.28      
18 B 466 445 16.98      

Unscaled Zero Point Vibrational Energy (zpe) 14493.3 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 13842.6 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 CCD/6-311G*
ABC
0.37246 0.34676 0.18170

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.150
O2 0.000 0.000 1.357
N3 0.000 1.159 -0.618
N4 0.000 -1.159 -0.618
H5 0.219 1.974 -0.068
H6 0.517 1.109 -1.482
H7 -0.219 -1.974 -0.068
H8 -0.517 -1.109 -1.482

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.20731.39071.39071.99822.03971.99822.0397
O21.20732.29042.29042.44453.09172.44453.0917
N31.39072.29042.31871.00741.00793.18912.4819
N41.39072.29042.31873.18912.48191.00741.0079
H51.99822.44451.00743.18911.68453.97273.4712
H62.03973.09171.00792.48191.68453.47122.4474
H71.99822.44453.18911.00743.97273.47121.6845
H82.03973.09172.48191.00793.47122.44741.6845

picture of Urea state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 111.877 C1 N3 H6 115.588
C1 N4 H7 111.877 C1 N4 H8 115.588
O2 C1 N3 123.522 O2 C1 N4 123.522
N3 C1 N4 112.956 H5 N3 H6 113.414
H7 N4 H8 113.414
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Energy calculated at CCD/6-311G*
 hartrees
Energy at 0K-224.715381
Energy at 298.15K-224.721414
HF Energy-224.038174
Nuclear repulsion energy123.885996
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 CCD/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' 3763 3594 24.60      
2 A' 3652 3488 9.83      
3 A' 1889 1804 458.04      
4 A' 1727 1649 23.83      
5 A' 1237 1181 5.95      
6 A' 982 938 12.37      
7 A' 808 772 78.36      
8 A' 578 552 248.34      
9 A' 525 501 97.66      
10 A' 471 449 104.03      
11 A" 3760 3591 20.48      
12 A" 3643 3480 33.47      
13 A" 1711 1634 196.51      
14 A" 1469 1403 212.90      
15 A" 1071 1023 23.75      
16 A" 592 565 43.78      
17 A" 499 477 145.45      
18 A" 225 215 14.49      

Unscaled Zero Point Vibrational Energy (zpe) 14300.4 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 13658.3 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 CCD/6-311G*
ABC
0.37657 0.34446 0.18114

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.009 0.144 0.000
O2 0.044 1.353 0.000
N3 0.044 -0.606 1.165
N4 0.044 -0.606 -1.165
H5 -0.180 -0.068 1.985
H6 -0.331 -1.539 1.156
H7 -0.180 -0.068 -1.985
H8 -0.331 -1.539 -1.156

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.20921.38551.38552.00482.06982.00482.0698
O21.20922.27862.27862.45093.13662.45093.1366
N31.38552.27862.32921.00581.00573.20262.5291
N41.38552.27862.32923.20262.52911.00581.0057
H52.00482.45091.00583.20261.69503.96913.4713
H62.06983.13661.00572.52911.69503.47132.3120
H72.00482.45093.20261.00583.96913.47131.6950
H82.06983.13662.52911.00573.47132.31201.6950

picture of Urea state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 112.969 C1 N3 H6 119.048
C1 N4 H7 112.969 C1 N4 H8 119.048
O2 C1 N3 122.698 O2 C1 N4 122.698
N3 C1 N4 114.395 H5 N3 H6 114.843
H7 N4 H8 114.843
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at CCD/6-311G*
 hartrees
Energy at 0K-224.713368
Energy at 298.15K 
HF Energy-224.038195
Nuclear repulsion energy124.119097
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 CCD/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 3825 3654 46.88      
2 A1 3698 3532 9.31      
3 A1 1874 1790 537.56      
4 A1 1705 1629 1.27      
5 A1 1189 1136 0.35      
6 A1 997 953 11.96      
7 A1 493 471 2.58      
8 A2 359 343 0.00      
9 A2 543i 519i 0.00      
10 B1 790 754 7.24      
11 B1 569 543 12.40      
12 B1 440i 420i 603.82      
13 B2 3823 3651 29.48      
14 B2 3690 3525 67.09      
15 B2 1698 1622 290.31      
16 B2 1474 1408 251.60      
17 B2 1028 982 11.27      
18 B2 577 551 15.49      

Unscaled Zero Point Vibrational Energy (zpe) 13403.6 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 12801.8 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 CCD/6-311G*
ABC
0.37718 0.34802 0.18101

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.146
O2 0.000 0.000 1.358
N3 0.000 1.156 -0.597
N4 0.000 -1.156 -0.597
H5 0.000 2.021 -0.092
H6 0.000 1.179 -1.598
H7 0.000 -2.021 -0.092
H8 0.000 -1.179 -1.598

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.21211.37361.37362.03532.10472.03532.1047
O21.21212.27062.27062.48783.18212.48783.1821
N31.37362.27062.31131.00191.00143.21682.5401
N41.37362.27062.31133.21682.54011.00191.0014
H52.03532.48781.00193.21681.72524.04273.5366
H62.10473.18211.00142.54011.72523.53662.3577
H72.03532.48783.21681.00194.04273.53661.7252
H82.10473.18212.54011.00143.53662.35771.7252

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.055 C1 N3 H6 124.048
C1 N4 H7 117.055 C1 N4 H8 124.048
O2 C1 N3 122.720 O2 C1 N4 122.720
N3 C1 N4 114.560 H5 N3 H6 118.896
H7 N4 H8 118.896
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability