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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: CCSD(T)/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes CS 1A'
1 3 no C2V 1A1

Conformer 1 (C2)

Jump to S1C2 S1C3
Vibrational Frequencies calculated at CCSD(T)/cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVDZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Energy calculated at CCSD(T)/cc-pVDZ
 hartrees
Energy at 0K-224.698499
Energy at 298.15K-224.704511
HF Energy-224.005439
Nuclear repulsion energy122.787196
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 CCSD(T)/cc-pVDZ
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' 3690 3612        
2 A' 3573 3498        
3 A' 1844 1805        
4 A' 1640 1605        
5 A' 1202 1176        
6 A' 956 936        
7 A' 787 770        
8 A' 587 574        
9 A' 505 494        
10 A' 447 437        
11 A" 3687 3609        
12 A" 3566 3490        
13 A" 1624 1590        
14 A" 1426 1396        
15 A" 1046 1024        
16 A" 580 568        
17 A" 526 515        
18 A" 231 226        

Unscaled Zero Point Vibrational Energy (zpe) 13958.5 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 13662.6 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 CCSD(T)/cc-pVDZ
ABC
0.36717 0.34054 0.17854

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.013 0.147 0.000
O2 0.054 1.367 0.000
N3 0.054 -0.618 1.172
N4 0.054 -0.618 -1.172
H5 -0.222 -0.065 1.981
H6 -0.412 -1.522 1.139
H7 -0.222 -0.065 -1.981
H8 -0.412 -1.522 -1.139

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.22111.40011.40012.00622.06482.00622.0648
O21.22112.30532.30532.46013.14062.46013.1406
N31.40012.30532.34431.01811.01793.21332.5255
N41.40012.30532.34433.21332.52551.01811.0179
H52.00622.46011.01813.21331.69363.96243.4492
H62.06483.14061.01792.52551.69363.44922.2786
H72.00622.46013.21331.01813.96243.44921.6936
H82.06483.14062.52551.01793.44922.27861.6936

picture of Urea state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 111.132 C1 N3 H6 116.392
C1 N4 H7 111.132 C1 N4 H8 116.392
O2 C1 N3 123.012 O2 C1 N4 123.012
N3 C1 N4 113.683 H5 N3 H6 112.573
H7 N4 H8 112.573
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at CCSD(T)/cc-pVDZ
 hartrees
Energy at 0K-224.695019
Energy at 298.15K 
HF Energy-224.005384
Nuclear repulsion energy123.164197
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 CCSD(T)/cc-pVDZ
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 3789 3708        
2 A1 3645 3568        
3 A1 1833 1794        
4 A1 1611 1577        
5 A1 1141 1117        
6 A1 980 959        
7 A1 475 465        
8 A2 366 358        
9 A2 526i 515i        
10 B1 769 752        
11 B1 568 556        
12 B1 453i 443i        
13 B2 3787 3706        
14 B2 3638 3561        
15 B2 1620 1586        
16 B2 1438 1407        
17 B2 989 968        
18 B2 560 548        

Unscaled Zero Point Vibrational Energy (zpe) 13114.6 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 12836.6 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 CCSD(T)/cc-pVDZ
ABC
0.36876 0.34556 0.17839

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.148
O2 0.000 0.000 1.373
N3 0.000 1.160 -0.604
N4 0.000 -1.160 -0.604
H5 0.000 2.035 -0.097
H6 0.000 1.172 -1.614
H7 0.000 -2.035 -0.097
H8 0.000 -1.172 -1.614

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.22481.38231.38232.04952.11702.04952.1170
O21.22482.29202.29202.51023.20932.51023.2093
N31.38232.29202.31941.01141.01063.23452.5417
N41.38232.29202.31943.23452.54171.01141.0106
H52.04952.51021.01143.23451.74554.06963.5481
H62.11703.20931.01062.54171.74553.54812.3448
H72.04952.51023.23451.01144.06963.54811.7455
H82.11703.20932.54171.01063.54812.34481.7455

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 116.945 C1 N3 H6 123.686
C1 N4 H7 116.945 C1 N4 H8 123.686
O2 C1 N3 122.966 O2 C1 N4 122.966
N3 C1 N4 114.067 H5 N3 H6 119.369
H7 N4 H8 119.369
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability