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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: CCD/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 CCD/6-31G
 hartrees
Energy at 0K-224.323905
Energy at 298.15K-224.329934
HF Energy-223.885331
Nuclear repulsion energy122.090727
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/6-31G
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 3760 3607 37.58      
2 A 3629 3482 8.46      
3 A 1773 1701 377.21      
4 A 1711 1642 43.71      
5 A 1186 1138 5.89      
6 A 975 935 8.63      
7 A 518 497 18.28      
8 A 483 464 14.99      
9 A 293 282 85.42      
10 B 3758 3606 27.02      
11 B 3624 3477 57.74      
12 B 1709 1640 201.14      
13 B 1483 1423 294.49      
14 B 1076 1033 18.29      
15 B 745 714 153.13      
16 B 572 549 246.98      
17 B 567 544 65.20      
18 B 444 426 398.60      

Unscaled Zero Point Vibrational Energy (zpe) 14152.9 cm-1
Scaled (by 0.9595) Zero Point Vibrational Energy (zpe) 13579.7 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 CCD/6-31G
ABC
0.36073 0.33940 0.17552

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.136
O2 0.000 0.000 1.391
N3 0.000 1.169 -0.614
N4 0.000 -1.169 -0.614
H5 0.031 2.035 -0.096
H6 0.308 1.184 -1.575
H7 -0.031 -2.035 -0.096
H8 -0.308 -1.184 -1.575

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.25411.38961.38962.04872.10372.04872.1037
O21.25412.32092.32092.52053.20812.52053.2081
N31.38962.32092.33891.00951.00933.24652.5603
N41.38962.32092.33893.24652.56031.00951.0093
H52.04872.52051.00953.24651.72924.07093.5586
H62.10373.20811.00932.56031.72923.55862.4460
H72.04872.52053.24651.00954.07093.55861.7292
H82.10373.20812.56031.00933.55862.44601.7292

picture of Urea state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 116.393 C1 N3 H6 121.745
C1 N4 H7 116.393 C1 N4 H8 121.745
O2 C1 N3 122.694 O2 C1 N4 122.694
N3 C1 N4 114.613 H5 N3 H6 117.873
H7 N4 H8 117.873
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Energy calculated at CCD/6-31G
 hartrees
Energy at 0K-224.323593
Energy at 298.15K 
HF Energy-223.886745
Nuclear repulsion energy122.143901
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/6-31G
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' 3778 3625 42.53      
2 A' 3645 3497 11.00      
3 A' 1765 1693 398.44      
4 A' 1709 1639 57.36      
5 A' 1177 1129 5.17      
6 A' 980 940 9.35      
7 A' 732 702 83.04      
8 A' 565 542 108.80      
9 A' 488 468 2.64      
10 A' 368 353 769.24      
11 A" 3775 3622 30.74      
12 A" 3638 3491 63.96      
13 A" 1703 1634 212.38      
14 A" 1486 1426 311.08      
15 A" 1046 1004 13.02      
16 A" 567 544 15.38      
17 A" 445 427 0.00      
18 A" 231i 222i 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 13817.4 cm-1
Scaled (by 0.9595) Zero Point Vibrational Energy (zpe) 13257.8 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/6-31G
ABC
0.36219 0.33942 0.17522

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 0.134 0.000
O2 0.001 1.390 0.000
N3 -0.000 -0.607 1.171
N4 -0.000 -0.607 -1.171
H5 -0.001 -0.098 2.041
H6 -0.001 -1.615 1.197
H7 -0.001 -0.098 -2.041
H8 -0.001 -1.615 -1.197

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.25601.38581.38582.05392.11932.05392.1193
O21.25602.31532.31532.52573.23462.52573.2346
N31.38582.31532.34141.00811.00793.25152.5730
N41.38582.31532.34143.25152.57301.00811.0079
H52.05392.52571.00813.25151.73574.08143.5752
H62.11933.23461.00792.57301.73573.57522.3936
H72.05392.52573.25151.00814.08143.57521.7357
H82.11933.23462.57301.00793.57522.39361.7357

picture of Urea state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.306 C1 N3 H6 123.834
C1 N4 H7 117.306 C1 N4 H8 123.834
O2 C1 N3 122.350 O2 C1 N4 122.350
N3 C1 N4 115.300 H5 N3 H6 118.860
H7 N4 H8 118.860
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at CCD/6-31G
 hartrees
Energy at 0K-224.323593
Energy at 298.15K 
HF Energy-223.886760
Nuclear repulsion energy122.148790
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/6-31G
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 3778 3625 42.31      
2 A1 3645 3497 11.04      
3 A1 1765 1694 400.65      
4 A1 1709 1640 55.48      
5 A1 1177 1129 5.09      
6 A1 980 940 9.37      
7 A1 488 468 2.64      
8 A2 445 427 0.00      
9 A2 230i 221i 0.00      
10 B1 732 702 82.76      
11 B1 564 541 108.79      
12 B1 369 354 769.46      
13 B2 3775 3622 30.95      
14 B2 3638 3491 63.84      
15 B2 1704 1635 212.39      
16 B2 1486 1426 310.95      
17 B2 1046 1004 13.00      
18 B2 567 544 15.38      

Unscaled Zero Point Vibrational Energy (zpe) 13818.3 cm-1
Scaled (by 0.9595) Zero Point Vibrational Energy (zpe) 13258.7 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 CCD/6-31G
ABC
0.36223 0.33944 0.17523

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.134
O2 0.000 0.000 1.390
N3 0.000 1.171 -0.607
N4 0.000 -1.171 -0.607
H5 0.000 2.041 -0.099
H6 0.000 1.196 -1.615
H7 0.000 -2.041 -0.099
H8 0.000 -1.196 -1.615

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.25581.38581.38582.05432.11912.05432.1191
O21.25582.31522.31522.52633.23432.52633.2343
N31.38582.31522.34131.00811.00793.25172.5725
N41.38582.31522.34133.25172.57251.00811.0079
H52.05432.52631.00813.25171.73564.08203.5748
H62.11913.23431.00792.57251.73563.57482.3927
H72.05432.52633.25171.00814.08203.57481.7356
H82.11913.23432.57251.00793.57482.39271.7356

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.346 C1 N3 H6 123.812
C1 N4 H7 117.346 C1 N4 H8 123.812
O2 C1 N3 122.353 O2 C1 N4 122.353
N3 C1 N4 115.293 H5 N3 H6 118.842
H7 N4 H8 118.842
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability