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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: QCISD(TQ)/cc-pVDZ

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

Conformer 2 (CS)

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

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at QCISD(TQ)/cc-pVDZ
 hartrees
Energy at 0K-224.695152
Energy at 298.15K 
HF Energy-224.005498
Nuclear repulsion energy123.203470
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(TQ)/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 3788 3788        
2 A1 3645 3645        
3 A1 1839 1839        
4 A1 1612 1612        
5 A1 1143 1143        
6 A1 982 982        
7 A1 476 476        
8 A2 365 365        
9 A2 526i 526i        
10 B1 770 770        
11 B1 567 567        
12 B1 453i 453i        
13 B2 3786 3786        
14 B2 3638 3638        
15 B2 1620 1620        
16 B2 1439 1439        
17 B2 991 991        
18 B2 561 561        

Unscaled Zero Point Vibrational Energy (zpe) 13121.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13121.1 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 QCISD(TQ)/cc-pVDZ
ABC
0.36924 0.34559 0.17851

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)/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 1.372
N3 0.000 1.160 -0.603
N4 0.000 -1.160 -0.603
H5 0.000 2.035 -0.096
H6 0.000 1.172 -1.614
H7 0.000 -2.035 -0.096
H8 0.000 -1.172 -1.614

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.22381.38211.38212.04942.11652.04942.1165
O21.22382.29082.29082.50923.20792.50923.2079
N31.38212.29082.31941.01141.01063.23442.5414
N41.38212.29082.31943.23442.54141.01141.0106
H52.04942.50921.01143.23441.74584.06953.5479
H62.11653.20791.01062.54141.74583.54792.3442
H72.04942.50923.23441.01144.06953.54791.7458
H82.11653.20792.54141.01063.54792.34421.7458

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 116.948 C1 N3 H6 123.657
C1 N4 H7 116.948 C1 N4 H8 123.657
O2 C1 N3 122.954 O2 C1 N4 122.954
N3 C1 N4 114.092 H5 N3 H6 119.394
H7 N4 H8 119.394
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability