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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: B3LYP/aug-cc-pVQZ

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 B3LYP/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at B3LYP/aug-cc-pVQZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVQZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Vibrational Frequencies calculated at B3LYP/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at B3LYP/aug-cc-pVQZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVQZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at B3LYP/aug-cc-pVQZ
 hartrees
Energy at 0K-225.385675
Energy at 298.15K 
HF Energy-225.385675
Nuclear repulsion energy124.045070
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 B3LYP/aug-cc-pVQZ
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 3745 3629 52.42      
2 A1 3619 3506 5.74      
3 A1 1762 1708 508.30      
4 A1 1627 1576 0.01      
5 A1 1146 1110 1.51      
6 A1 965 935 12.19      
7 A1 480 465 3.41      
8 A2 374 363 0.00      
9 A2 335i 325i 0.00      
10 B1 774 750 5.28      
11 B1 565 547 7.42      
12 B1 219i 212i 418.34      
13 B2 3743 3626 44.54      
14 B2 3609 3497 66.89      
15 B2 1618 1568 240.68      
16 B2 1412 1368 243.67      
17 B2 989 958 19.98      
18 B2 568 550 13.15      

Unscaled Zero Point Vibrational Energy (zpe) 13220.4 cm-1
Scaled (by 0.9689) Zero Point Vibrational Energy (zpe) 12809.2 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 B3LYP/aug-cc-pVQZ
ABC
0.37811 0.34657 0.18083

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.140
O2 0.000 0.000 1.357
N3 0.000 1.158 -0.595
N4 0.000 -1.158 -0.595
H5 0.000 2.022 -0.087
H6 0.000 1.183 -1.596
H7 0.000 -2.022 -0.087
H8 0.000 -1.183 -1.596

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.21721.37191.37192.03492.10122.03492.1012
O21.21722.27012.27012.48513.18182.48513.1818
N31.37192.27012.31671.00201.00173.22082.5466
N41.37192.27012.31673.22082.54661.00201.0017
H52.03492.48511.00203.22081.72684.04443.5428
H62.10123.18181.00172.54661.72683.54282.3661
H72.03492.48513.22081.00204.04443.54281.7268
H82.10123.18182.54661.00173.54282.36611.7268

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.149 C1 N3 H6 123.814
C1 N4 H7 117.149 C1 N4 H8 123.814
O2 C1 N3 122.400 O2 C1 N4 122.400
N3 C1 N4 115.200 H5 N3 H6 119.037
H7 N4 H8 119.037
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.839      
2 O -0.628      
3 N -0.595      
4 N -0.595      
5 H 0.224      
6 H 0.265      
7 H 0.224      
8 H 0.265      


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 -4.344 4.344
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.337 0.000 0.000
y 0.000 -17.094 0.000
z 0.000 0.000 -24.792
Traceless
 xyz
x -5.394 0.000 0.000
y 0.000 8.470 0.000
z 0.000 0.000 -3.076
Polar
3z2-r2-6.153
x2-y2-9.243
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.032 0.000 0.000
y 0.000 6.213 0.000
z 0.000 0.000 6.182


<r2> (average value of r2) Å2
<r2> 68.891
(<r2>)1/2 8.300