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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: B2PLYP/6-31G**

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 B2PLYP/6-31G**
Rotational Constants (cm-1) from geometry optimized at B2PLYP/6-31G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Vibrational Frequencies calculated at B2PLYP/6-31G**
Rotational Constants (cm-1) from geometry optimized at B2PLYP/6-31G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at B2PLYP/6-31G**
 hartrees
Energy at 0K-225.055389
Energy at 298.15K 
HF Energy-224.842633
Nuclear repulsion energy123.647771
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 B2PLYP/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 3821 3821 50.60      
2 A1 3681 3681 7.25      
3 A1 1830 1830 407.76      
4 A1 1651 1651 1.74      
5 A1 1157 1157 0.17      
6 A1 981 981 7.70      
7 A1 480 480 2.90      
8 A2 375 375 0.00      
9 A2 440i 440i 0.00      
10 B1 764 764 12.29      
11 B1 574 574 12.12      
12 B1 331i 331i 548.28      
13 B2 3819 3819 44.94      
14 B2 3672 3672 68.01      
15 B2 1649 1649 287.96      
16 B2 1448 1448 207.23      
17 B2 998 998 11.38      
18 B2 561 561 14.93      

Unscaled Zero Point Vibrational Energy (zpe) 13344.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13344.5 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 B2PLYP/6-31G**
ABC
0.37278 0.34685 0.17967

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.142
O2 0.000 0.000 1.367
N3 0.000 1.158 -0.600
N4 0.000 -1.158 -0.600
H5 0.000 2.021 -0.089
H6 0.000 1.184 -1.603
H7 0.000 -2.021 -0.089
H8 0.000 -1.184 -1.603

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.22521.37511.37512.03382.10822.03382.1082
O21.22522.28262.28262.49033.19692.49033.1969
N31.37512.28262.31581.00311.00303.21952.5472
N41.37512.28262.31583.21952.54721.00311.0030
H52.03382.49031.00313.21951.73024.04143.5442
H62.10823.19691.00302.54721.73023.54422.3674
H72.03382.49033.21951.00314.04143.54421.7302
H82.10823.19692.54721.00303.54422.36741.7302

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 116.684 C1 N3 H6 124.122
C1 N4 H7 116.684 C1 N4 H8 124.122
O2 C1 N3 122.648 O2 C1 N4 122.648
N3 C1 N4 114.704 H5 N3 H6 119.194
H7 N4 H8 119.194
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.724      
2 O -0.525      
3 N -0.658      
4 N -0.658      
5 H 0.292      
6 H 0.267      
7 H 0.292      
8 H 0.267      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -4.249 4.249
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.418 0.000 0.000
y 0.000 -16.287 0.000
z 0.000 0.000 -23.482
Traceless
 xyz
x -5.534 0.000 0.000
y 0.000 8.163 0.000
z 0.000 0.000 -2.629
Polar
3z2-r2-5.259
x2-y2-9.131
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.838 0.000 0.000
y 0.000 4.612 0.000
z 0.000 0.000 4.814


<r2> (average value of r2) Å2
<r2> 68.574
(<r2>)1/2 8.281