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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-224.347259
Energy at 298.15K-224.352871
HF Energy-223.926566
Nuclear repulsion energy120.802118
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/SDD
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 3776 3645 52.73      
2 A 3624 3499 10.65      
3 A 1727 1667 275.80      
4 A 1664 1607 180.69      
5 A 1160 1120 3.28      
6 A 935 903 11.40      
7 A 470 454 3.36      
8 A 431 416 2.98      
9 A 133 128 23.91      
10 B 3773 3642 31.13      
11 B 3619 3493 80.67      
12 B 1679 1621 186.55      
13 B 1432 1382 342.31      
14 B 1030 994 21.78      
15 B 723 698 47.74      
16 B 551 532 135.63      
17 B 534 516 16.39      
18 B 412 398 673.41      

Unscaled Zero Point Vibrational Energy (zpe) 13836.8 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 13356.7 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/SDD
ABC
0.35211 0.33293 0.17127

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.139
O2 0.000 0.000 1.410
N3 -0.011 1.183 -0.618
N4 0.011 -1.183 -0.618
H5 0.000 2.058 -0.108
H6 0.140 1.197 -1.620
H7 0.000 -2.058 -0.108
H8 -0.140 -1.197 -1.620

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.27031.40441.40442.07302.13262.07302.1326
O21.27032.34742.34742.55713.26052.55713.2605
N31.40442.34742.36511.01371.01313.28072.5853
N41.40442.34742.36513.28072.58531.01371.0131
H52.07302.55711.01373.28071.74564.11653.5924
H62.13263.26051.01312.58531.74563.59242.4111
H72.07302.55713.28071.01374.11653.59241.7456
H82.13263.26052.58531.01313.59242.41111.7456

picture of Urea state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.114 C1 N3 H6 122.990
C1 N4 H7 117.114 C1 N4 H8 122.990
O2 C1 N3 122.641 O2 C1 N4 122.641
N3 C1 N4 114.717 H5 N3 H6 118.921
H7 N4 H8 118.921
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-224.347250
Energy at 298.15K 
HF Energy-223.926901
Nuclear repulsion energy120.829714
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/SDD
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' 3781 3650 54.52      
2 A' 3628 3502 10.98      
3 A' 1727 1668 277.83      
4 A' 1665 1607 187.92      
5 A' 1159 1119 3.19      
6 A' 937 904 11.95      
7 A' 723 698 37.97      
8 A' 551 532 102.37      
9 A' 471 454 2.35      
10 A' 393 380 741.87      
11 A" 3778 3647 31.57      
12 A" 3622 3497 83.10      
13 A" 1679 1620 187.76      
14 A" 1434 1384 349.03      
15 A" 1025 989 20.77      
16 A" 535 516 12.72      
17 A" 413 398 0.00      
18 A" 89i 86i 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 13715.0 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 13239.1 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/SDD
ABC
0.35266 0.33291 0.17125

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.138 0.000
O2 -0.000 1.409 0.000
N3 0.000 -0.616 1.183
N4 0.000 -0.616 -1.183
H5 0.000 -0.108 2.059
H6 0.000 -1.629 1.200
H7 0.000 -0.108 -2.059
H8 0.000 -1.629 -1.200

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.27051.40321.40322.07382.13632.07382.1363
O21.27052.34562.34562.55743.26632.55743.2663
N31.40322.34562.36581.01331.01273.28182.5890
N41.40322.34562.36583.28182.58901.01331.0127
H52.07382.55741.01333.28181.74724.11843.5967
H62.13633.26631.01272.58901.74723.59672.3998
H72.07382.55743.28181.01334.11843.59671.7472
H82.13633.26632.58901.01273.59672.39981.7472

picture of Urea state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.313 C1 N3 H6 123.508
C1 N4 H7 117.313 C1 N4 H8 123.508
O2 C1 N3 122.545 O2 C1 N4 122.545
N3 C1 N4 114.910 H5 N3 H6 119.179
H7 N4 H8 119.179
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-224.347250
Energy at 298.15K 
HF Energy-223.926889
Nuclear repulsion energy120.822201
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/SDD
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 3781 3650 54.42      
2 A1 3629 3503 10.94      
3 A1 1727 1667 279.16      
4 A1 1665 1607 186.68      
5 A1 1159 1119 3.15      
6 A1 936 904 12.01      
7 A1 471 454 2.35      
8 A2 411 397 0.00      
9 A2 92i 89i 0.00      
10 B1 723 698 37.75      
11 B1 551 531 101.11      
12 B1 393 379 743.55      
13 B2 3778 3647 31.71      
14 B2 3623 3497 83.11      
15 B2 1678 1620 187.31      
16 B2 1433 1383 349.05      
17 B2 1024 989 20.91      
18 B2 535 516 12.70      

Unscaled Zero Point Vibrational Energy (zpe) 13711.9 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 13236.1 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/SDD
ABC
0.35266 0.33280 0.17122

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.139
O2 0.000 0.000 1.409
N3 0.000 1.183 -0.616
N4 0.000 -1.183 -0.616
H5 0.000 2.060 -0.108
H6 0.000 1.199 -1.629
H7 0.000 -2.060 -0.108
H8 0.000 -1.199 -1.629

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.27041.40351.40352.07442.13612.07442.1361
O21.27042.34562.34562.55803.26612.55803.2661
N31.40352.34562.36631.01331.01263.28242.5888
N41.40352.34562.36633.28242.58881.01331.0126
H52.07442.55801.01333.28241.74734.11933.5965
H62.13613.26611.01262.58881.74733.59652.3989
H72.07442.55803.28241.01334.11933.59651.7473
H82.13613.26612.58881.01263.59652.39891.7473

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.344 C1 N3 H6 123.468
C1 N4 H7 117.344 C1 N4 H8 123.468
O2 C1 N3 122.543 O2 C1 N4 122.543
N3 C1 N4 114.913 H5 N3 H6 119.189
H7 N4 H8 119.189
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability