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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: B1B95/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B1B95/CEP-31G*
 hartrees
Energy at 0K-43.818047
Energy at 298.15K-43.824185
Nuclear repulsion energy69.011585
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 B1B95/CEP-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 A 3732 3572 36.02      
2 A 3611 3456 3.12      
3 A 1873 1792 470.02      
4 A 1634 1564 0.16      
5 A 1171 1121 0.77      
6 A 958 917 10.28      
7 A 622 596 104.43      
8 A 456 436 4.72      
9 A 374 358 81.59      
10 B 3732 3572 27.93      
11 B 3607 3453 51.54      
12 B 1645 1575 235.52      
13 B 1425 1364 207.01      
14 B 1043 998 21.74      
15 B 786 753 112.36      
16 B 578 553 244.54      
17 B 546 523 112.10      
18 B 442 423 69.49      

Unscaled Zero Point Vibrational Energy (zpe) 14117.3 cm-1
Scaled (by 0.9572) Zero Point Vibrational Energy (zpe) 13513.1 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 B1B95/CEP-31G*
ABC
0.36473 0.33996 0.17785

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.145
O2 0.000 0.000 1.374
N3 0.000 1.171 -0.623
N4 0.000 -1.171 -0.623
H5 0.219 1.989 -0.062
H6 0.496 1.134 -1.508
H7 -0.219 -1.989 -0.062
H8 -0.496 -1.134 -1.508

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.22901.40021.40022.01162.06462.01162.0646
O21.22902.31442.31442.46253.13612.46253.1361
N31.40022.31442.34281.01531.01583.21722.5188
N41.40022.31442.34283.21722.51881.01531.0158
H52.01162.46251.01533.21721.70284.00203.5150
H62.06463.13611.01582.51881.70283.51502.4754
H72.01162.46253.21721.01534.00203.51501.7028
H82.06463.13612.51881.01583.51502.47541.7028

picture of Urea state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 111.785 C1 N3 H6 116.523
C1 N4 H7 111.785 C1 N4 H8 116.523
O2 C1 N3 123.218 O2 C1 N4 123.218
N3 C1 N4 113.564 H5 N3 H6 113.939
H7 N4 H8 113.939
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.304      
2 O -0.137      
3 N -0.415      
4 N -0.415      
5 H 0.329      
6 H 0.307      
7 H 0.329      
8 H 0.307      


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 -3.732 3.732
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.551 3.903 0.000
y 3.903 -17.243 0.000
z 0.000 0.000 -24.992
Traceless
 xyz
x -3.434 3.903 0.000
y 3.903 7.529 0.000
z 0.000 0.000 -4.095
Polar
3z2-r2-8.190
x2-y2-7.309
xy3.903
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.582 0.076 0.000
y 0.076 4.661 0.000
z 0.000 0.000 4.991


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000