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All results from a given calculation for NH2CN (cyanamide)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
1 2 no C2V 1A1

Conformer 1 (Cs)

Jump to S1C2
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-148.720216
Energy at 298.15K-148.722485
Nuclear repulsion energy59.154233
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3566 3412 40.32      
2 A' 2378 2275 96.01      
3 A' 1662 1590 49.39      
4 A' 1112 1064 6.57      
5 A' 594 568 239.35      
6 A' 489 468 58.66      
7 A" 3664 3506 57.41      
8 A" 1207 1155 0.56      
9 A" 412 394 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 7542.3 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 7215.7 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 B3PW91/6-31G*
ABC
10.24128 0.33702 0.32896

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.218 0.000
N2 -0.034 1.384 0.000
N3 0.100 -1.121 0.000
H4 -0.230 -1.574 0.844
H5 -0.230 -1.574 -0.844

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.16611.34341.99421.9942
N21.16612.50893.08203.0820
N31.34342.50891.01281.0128
H41.99423.08201.01281.6880
H51.99423.08201.01281.6880

picture of cyanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 114.911 C1 N3 H5 114.911
N2 C1 N3 177.420 H4 N3 H5 112.884
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.494      
2 N -0.460      
3 N -0.798      
4 H 0.382      
5 H 0.382      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.088 -4.426 0.000 4.558
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.094 2.100 0.000
y 2.100 -17.962 0.000
z 0.000 0.000 -14.677
Traceless
 xyz
x -1.774 2.100 0.000
y 2.100 -1.576 0.000
z 0.000 0.000 3.351
Polar
3z2-r26.701
x2-y2-0.132
xy2.100
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.597 -0.021 0.000
y -0.021 4.814 0.000
z 0.000 0.000 2.083


<r2> (average value of r2) Å2
<r2> 39.620
(<r2>)1/2 6.294

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-148.718882
Energy at 298.15K 
HF Energy-148.718882
Nuclear repulsion energy59.293929
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 B3PW91/6-31G*
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 3640 3482 68.53      
2 A1 2377 2274 122.48      
3 A1 1640 1569 58.72      
4 A1 1148 1099 9.74      
5 B1 528 505 1.04      
6 B1 429i 410i 343.66      
7 B2 3753 3590 91.50      
8 B2 1144 1094 5.39      
9 B2 409 391 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 7104.9 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 6797.3 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 B3PW91/6-31G*
ABC
11.13155 0.33848 0.32849

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.219
N2 0.000 0.000 1.386
N3 0.000 0.000 -1.110
H4 0.000 0.867 -1.623
H5 0.000 -0.867 -1.623

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.16781.32872.03522.0352
N21.16782.49643.13153.1315
N31.32872.49641.00711.0071
H42.03523.13151.00711.7336
H52.03523.13151.00711.7336

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.606 C1 N3 H5 120.606
N2 C1 N3 180.000 H4 N3 H5 118.788
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.521      
2 N -0.462      
3 N -0.840      
4 H 0.390      
5 H 0.390      


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 -4.807 4.807
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.310 0.000 0.000
y 0.000 -14.392 0.000
z 0.000 0.000 -17.169
Traceless
 xyz
x -2.529 0.000 0.000
y 0.000 3.347 0.000
z 0.000 0.000 -0.818
Polar
3z2-r2-1.636
x2-y2-3.917
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.503 0.000 0.000
y 0.000 2.026 0.000
z 0.000 0.000 4.835


<r2> (average value of r2) Å2
<r2> 39.519
(<r2>)1/2 6.286