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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: HF/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/6-311+G(3df,2p)
 hartrees
Energy at 0K-224.082072
Energy at 298.15K-224.088407
HF Energy-224.082072
Nuclear repulsion energy125.483260
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/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3930 3571 66.56      
2 A 3816 3467 7.12      
3 A 1946 1768 600.90      
4 A 1773 1611 0.27      
5 A 1280 1163 6.48      
6 A 1024 931 11.78      
7 A 565 513 46.02      
8 A 515 468 2.32      
9 A 390 354 85.37      
10 B 3929 3570 32.18      
11 B 3811 3463 73.52      
12 B 1777 1615 214.06      
13 B 1522 1383 246.37      
14 B 1137 1033 26.05      
15 B 873 794 76.50      
16 B 630 572 45.75      
17 B 568 516 157.55      
18 B 464 421 228.14      

Unscaled Zero Point Vibrational Energy (zpe) 14974.5 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 13605.8 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/6-311+G(3df,2p)
ABC
0.38740 0.35228 0.18576

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.143
O2 0.000 0.000 1.335
N3 0.000 1.151 -0.597
N4 0.000 -1.151 -0.597
H5 0.194 1.972 -0.075
H6 0.379 1.127 -1.514
H7 -0.194 -1.972 -0.075
H8 -0.379 -1.127 -1.514

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.19171.36841.36841.99362.03951.99362.0395
O21.19172.24892.24892.43203.08692.43203.0869
N31.36842.24892.30150.99250.99203.17212.4846
N41.36842.24892.30153.17212.48460.99250.9920
H51.99362.43200.99253.17211.67853.96323.4648
H62.03953.08690.99202.48461.67853.46482.3790
H71.99362.43203.17210.99253.96323.46481.6785
H82.03953.08692.48460.99203.46482.37901.6785

picture of Urea state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 114.276 C1 N3 H6 118.689
C1 N4 H7 114.276 C1 N4 H8 118.689
O2 C1 N3 122.760 O2 C1 N4 122.760
N3 C1 N4 114.480 H5 N3 H6 115.525
H7 N4 H8 115.525
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.884      
2 O -0.926      
3 N -0.837      
4 N -0.837      
5 H 0.177      
6 H 0.181      
7 H 0.177      
8 H 0.181      


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 -4.062 4.062
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.272 3.040 0.000
y 3.040 -17.732 0.000
z 0.000 0.000 -25.470
Traceless
 xyz
x -3.671 3.040 0.000
y 3.040 7.640 0.000
z 0.000 0.000 -3.968
Polar
3z2-r2-7.936
x2-y2-7.541
xy3.040
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.502 0.057 0.000
y 0.057 4.967 0.000
z 0.000 0.000 5.199


<r2> (average value of r2) Å2
<r2> 67.445
(<r2>)1/2 8.212