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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: MP3=FULL/TZVP

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 MP3=FULL/TZVP
 hartrees
Energy at 0K-224.841843
Energy at 298.15K-224.848201
HF Energy-224.072447
Nuclear repulsion energy124.191419
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 MP3=FULL/TZVP
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 3761 3512 36.86      
2 A 3653 3411 6.04      
3 A 1887 1761 485.27      
4 A 1670 1559 0.40      
5 A 1230 1148 4.53      
6 A 976 911 9.14      
7 A 687 642 127.57      
8 A 493 460 1.55      
9 A 394 368 74.40      
10 B 3761 3512 24.46      
11 B 3650 3408 52.30      
12 B 1676 1565 189.93      
13 B 1448 1352 210.43      
14 B 1093 1021 25.30      
15 B 812 759 144.69      
16 B 614 573 249.55      
17 B 587 548 82.13      
18 B 471 440 18.32      

Unscaled Zero Point Vibrational Energy (zpe) 14432.0 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 13475.2 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 MP3=FULL/TZVP
ABC
0.37531 0.34831 0.18260

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.148
O2 0.000 0.000 1.353
N3 0.000 1.157 -0.613
N4 0.000 -1.157 -0.613
H5 0.228 1.972 -0.071
H6 0.486 1.107 -1.492
H7 -0.228 -1.972 -0.071
H8 -0.486 -1.107 -1.492

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.20531.38511.38511.99742.03711.99742.0371
O21.20532.28172.28172.44363.09112.44363.0911
N31.38512.28172.31451.00491.00523.18422.4768
N41.38512.28172.31453.18422.47681.00491.0052
H51.99742.44361.00493.18421.68293.97073.4654
H62.03713.09111.00522.47681.68293.46542.4179
H71.99742.44363.18421.00493.97073.46541.6829
H82.03713.09112.47681.00523.46542.41791.6829

picture of Urea state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 112.409 C1 N3 H6 116.004
C1 N4 H7 112.409 C1 N4 H8 116.004
O2 C1 N3 123.334 O2 C1 N4 123.334
N3 C1 N4 113.332 H5 N3 H6 113.692
H7 N4 H8 113.692
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Energy calculated at MP3=FULL/TZVP
 hartrees
Energy at 0K-224.839735
Energy at 298.15K-224.845856
HF Energy-224.070826
Nuclear repulsion energy124.219783
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 MP3=FULL/TZVP
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' 3784 3533 38.20      
2 A' 3672 3428 12.57      
3 A' 1875 1750 513.44      
4 A' 1683 1571 19.53      
5 A' 1222 1141 6.11      
6 A' 982 917 14.68      
7 A' 796 743 73.68      
8 A' 575 537 284.58      
9 A' 527 492 62.65      
10 A' 481 449 52.29      
11 A" 3781 3531 27.15      
12 A" 3664 3421 49.80      
13 A" 1668 1558 196.36      
14 A" 1452 1355 215.03      
15 A" 1063 993 24.06      
16 A" 600 560 40.07      
17 A" 504 471 135.98      
18 A" 273 255 3.65      

Unscaled Zero Point Vibrational Energy (zpe) 14301.1 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 13352.9 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 MP3=FULL/TZVP
ABC
0.37844 0.34662 0.18217

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.008 0.144 0.000
O2 0.044 1.350 0.000
N3 0.044 -0.603 1.161
N4 0.044 -0.603 -1.161
H5 -0.188 -0.073 1.981
H6 -0.323 -1.537 1.143
H7 -0.188 -0.073 -1.981
H8 -0.323 -1.537 -1.143

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.20671.38141.38142.00252.05912.00252.0591
O21.20672.27242.27242.45023.12642.45023.1264
N31.38142.27242.32261.00381.00343.19542.5132
N41.38142.27242.32263.19542.51321.00381.0034
H52.00252.45021.00383.19541.69213.96223.4527
H62.05913.12641.00342.51321.69213.45272.2860
H72.00252.45023.19541.00383.96223.45271.6921
H82.05913.12642.51321.00343.45272.28601.6921

picture of Urea state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 113.242 C1 N3 H6 118.552
C1 N4 H7 113.242 C1 N4 H8 118.552
O2 C1 N3 122.669 O2 C1 N4 122.669
N3 C1 N4 114.428 H5 N3 H6 114.928
H7 N4 H8 114.928
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at MP3=FULL/TZVP
 hartrees
Energy at 0K-224.837413
Energy at 298.15K 
HF Energy-224.071344
Nuclear repulsion energy124.444764
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 MP3=FULL/TZVP
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 3846 3591 69.58      
2 A1 3716 3469 12.71      
3 A1 1857 1734 600.26      
4 A1 1672 1561 3.44      
5 A1 1181 1102 0.47      
6 A1 995 929 15.56      
7 A1 496 463 2.16      
8 A2 311 291 0.00      
9 A2 562i 524i 0.00      
10 B1 756 706 1.80      
11 B1 540 504 11.31      
12 B1 490i 458i 519.05      
13 B2 3843 3588 36.75      
14 B2 3708 3462 86.94      
15 B2 1666 1555 276.85      
16 B2 1458 1361 262.10      
17 B2 1022 954 13.83      
18 B2 587 548 14.64      

Unscaled Zero Point Vibrational Energy (zpe) 13300.6 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 12418.8 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 MP3=FULL/TZVP
ABC
0.37937 0.34983 0.18200

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.144
O2 0.000 0.000 1.354
N3 0.000 1.153 -0.595
N4 0.000 -1.153 -0.595
H5 0.000 2.017 -0.092
H6 0.000 1.168 -1.594
H7 0.000 -2.017 -0.092
H8 0.000 -1.168 -1.594

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.20981.36951.36952.03102.09432.03102.0943
O21.20982.26442.26442.48183.17102.48183.1710
N31.36952.26442.30610.99990.99923.20992.5273
N41.36952.26442.30613.20992.52730.99990.9992
H52.03102.48180.99993.20991.72534.03443.5220
H62.09433.17100.99922.52731.72533.52202.3369
H72.03102.48183.20990.99994.03443.52201.7253
H82.09433.17102.52730.99923.52202.33691.7253

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.139 C1 N3 H6 123.542
C1 N4 H7 117.139 C1 N4 H8 123.542
O2 C1 N3 122.657 O2 C1 N4 122.657
N3 C1 N4 114.685 H5 N3 H6 119.319
H7 N4 H8 119.319
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability