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All results from a given calculation for NH2CONH2 (Urea)

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

Conformer 2 (CS)

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

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at QCISD(T)=FULL/cc-pVDZ
 hartrees
Energy at 0K-224.704879
Energy at 298.15K 
HF Energy-224.005496
Nuclear repulsion energy123.203079
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/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 3791 3636        
2 A1 3648 3498        
3 A1 1831 1756        
4 A1 1612 1546        
5 A1 1140 1094        
6 A1 980 940        
7 A1 476 456        
8 A2 367 351        
9 A2 523i 502i        
10 B1 769 738        
11 B1 569 545        
12 B1 450i 431i        
13 B2 3789 3634        
14 B2 3640 3491        
15 B2 1621 1555        
16 B2 1438 1379        
17 B2 989 948        
18 B2 559 537        

Unscaled Zero Point Vibrational Energy (zpe) 13123.4 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 12585.4 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/cc-pVDZ
ABC
0.36888 0.34587 0.17850

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/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 1.159 -0.604
N4 0.000 -1.159 -0.604
H5 0.000 2.034 -0.097
H6 0.000 1.172 -1.614
H7 0.000 -2.034 -0.097
H8 0.000 -1.172 -1.614

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.22491.38171.38172.04852.11622.04852.1162
O21.22492.29152.29152.50953.20852.50953.2085
N31.38172.29152.31841.01081.01013.23292.5408
N41.38172.29152.31843.23292.54081.01081.0101
H52.04852.50951.01083.23291.74424.06763.5467
H62.11623.20851.01012.54081.74423.54672.3445
H72.04852.50953.23291.01084.06763.54671.7442
H82.11623.20852.54081.01013.54672.34451.7442

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 116.951 C1 N3 H6 123.708
C1 N4 H7 116.951 C1 N4 H8 123.708
O2 C1 N3 122.967 O2 C1 N4 122.967
N3 C1 N4 114.066 H5 N3 H6 119.341
H7 N4 H8 119.341
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability