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All results from a given calculation for NH2CONH2 (Urea)

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

Conformer 2 (CS)

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

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at HF/cc-pVQZ
 hartrees
Energy at 0K-224.098335
Energy at 298.15K 
HF Energy-224.098335
Nuclear repulsion energy125.725248
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 HF/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 3982 3617 84.53      
2 A1 3850 3497 9.67      
3 A1 1919 1744 642.96      
4 A1 1773 1611 0.02      
5 A1 1253 1138 3.21      
6 A1 1040 944 13.79      
7 A1 520 473 3.35      
8 A2 428 389 0.00      
9 A2 381i 346i 0.00      
10 B1 866 787 21.21      
11 B1 601 546 7.59      
12 B1 255i 232i 489.68      
13 B2 3979 3614 37.01      
14 B2 3842 3490 98.05      
15 B2 1768 1606 270.47      
16 B2 1530 1390 269.66      
17 B2 1090 990 16.61      
18 B2 621 564 18.39      

Unscaled Zero Point Vibrational Energy (zpe) 14212.0 cm-1
Scaled (by 0.9084) Zero Point Vibrational Energy (zpe) 12910.2 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 HF/cc-pVQZ
ABC
0.39003 0.35411 0.18560

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

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 1.336
N3 0.000 1.147 -0.586
N4 0.000 -1.147 -0.586
H5 0.000 2.000 -0.089
H6 0.000 1.163 -1.573
H7 0.000 -2.000 -0.089
H8 0.000 -1.163 -1.573

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.19511.35751.35752.01332.07082.01332.0708
O21.19512.23792.23792.45563.13242.45563.1324
N31.35752.23792.29310.98810.98693.18592.5112
N41.35752.23792.29313.18592.51120.98810.9869
H52.01332.45560.98813.18591.70434.00053.4939
H62.07083.13240.98692.51121.70433.49392.3253
H72.01332.45563.18590.98814.00053.49391.7043
H82.07083.13242.51120.98693.49392.32531.7043

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.392 C1 N3 H6 123.309
C1 N4 H7 117.392 C1 N4 H8 123.309
O2 C1 N3 122.373 O2 C1 N4 122.373
N3 C1 N4 115.254 H5 N3 H6 119.298
H7 N4 H8 119.298
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.610      
2 O -0.527      
3 N -0.425      
4 N -0.425      
5 H 0.216      
6 H 0.168      
7 H 0.216      
8 H 0.168      


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 -4.580 4.580
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.807 0.000 0.000
y 0.000 -16.564 0.000
z 0.000 0.000 -24.485
Traceless
 xyz
x -5.282 0.000 0.000
y 0.000 8.582 0.000
z 0.000 0.000 -3.299
Polar
3z2-r2-6.599
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 3.145 0.000 0.000
y 0.000 4.776 0.000
z 0.000 0.000 4.962


<r2> (average value of r2) Å2
<r2> 67.195
(<r2>)1/2 8.197