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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: QCISD(T)=FULL/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 3 yes C2V 1A1

Conformer 1 (C2)

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

Conformer 2 (CS)

Jump to S1C1 S1C3
Vibrational Frequencies calculated at QCISD(T)=FULL/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)=FULL/aug-cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVTZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at QCISD(T)=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-225.025990
Energy at 298.15K 
HF Energy-224.083642
Nuclear repulsion energy124.245311
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 QCISD(T)=FULL/aug-cc-pVTZ
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 3779 3779        
2 A1 3654 3654        
3 A1 1787 1787        
4 A1 1640 1640        
5 A1 1137 1137        
6 A1 977 977        
7 A1 476 476        
8 A2 369 369        
9 A2 399i 399i        
10 B1 780 780        
11 B1 578 578        
12 B1 317i 317i        
13 B2 3777 3777        
14 B2 3646 3646        
15 B2 1637 1637        
16 B2 1434 1434        
17 B2 984 984        
18 B2 560 560        

Unscaled Zero Point Vibrational Energy (zpe) 13249.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13249.2 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 QCISD(T)=FULL/aug-cc-pVTZ
ABC
0.37723 0.34973 0.18148

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.141
O2 0.000 0.000 1.359
N3 0.000 1.153 -0.596
N4 0.000 -1.153 -0.596
H5 0.000 2.016 -0.089
H6 0.000 1.171 -1.596
H7 0.000 -2.016 -0.089
H8 0.000 -1.171 -1.596

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.21811.36861.36862.02862.09422.02862.0942
O21.21812.26982.26982.48163.17802.48163.1780
N31.36862.26982.30661.00030.99983.20922.5298
N41.36862.26982.30663.20922.52981.00030.9998
H52.02862.48161.00033.20921.72754.03103.5244
H62.09423.17800.99982.52981.72753.52442.3411
H72.02862.48163.20921.00034.03103.52441.7275
H82.09423.17802.52980.99983.52442.34111.7275

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 116.961 C1 N3 H6 123.564
C1 N4 H7 116.961 C1 N4 H8 123.564
O2 C1 N3 122.575 O2 C1 N4 122.575
N3 C1 N4 114.849 H5 N3 H6 119.475
H7 N4 H8 119.475
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability