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All results from a given calculation for H2CNCN (cyanamide, methylene)

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes 1A'
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-185.763508
Energy at 298.15K 
HF Energy-185.763508
Nuclear repulsion energy91.772514
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 mPW1PW91/3-21G*
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' 3235 3072 9.86 85.47 0.55 0.71
2 A' 3108 2952 12.83 85.11 0.15 0.26
3 A' 2303 2187 20.11 131.94 0.32 0.49
4 A' 1701 1616 29.57 30.43 0.27 0.42
5 A' 1552 1473 10.53 30.00 0.45 0.62
6 A' 1236 1174 4.55 5.14 0.74 0.85
7 A' 933 886 4.37 1.80 0.05 0.10
8 A' 619 587 3.97 3.05 0.46 0.63
9 A' 261 247 7.63 9.10 0.53 0.69
10 A" 1120 1064 33.28 0.12 0.75 0.86
11 A" 804 764 1.23 10.01 0.75 0.86
12 A" 412 391 6.60 1.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8642.4 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 8206.8 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 mPW1PW91/3-21G*
ABC
2.46629 0.17383 0.16238

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.097 -1.589 0.000
N2 -0.564 -0.492 0.000
C3 0.000 0.722 0.000
N4 0.377 1.830 0.000
H5 -0.458 -2.520 0.000
H6 1.186 -1.649 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 N4 H5 H6
C11.28112.31293.42981.08421.0905
N21.28111.33862.50492.03112.0984
C32.31291.33861.16993.27432.6513
N43.42982.50491.16994.42913.5715
H51.08422.03113.27434.42911.8605
H61.09052.09842.65133.57151.8605

picture of cyanamide, methylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 123.978 N2 C1 H5 118.107
N2 C1 H6 124.258 N2 C3 N4 173.872
H5 C1 H6 117.634
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.131      
2 N -0.525      
3 C 0.589      
4 N -0.434      
5 H 0.261      
6 H 0.240      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.774 -4.191 0.000 4.262
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.548 -2.524 0.000
y -2.524 -23.370 0.000
z 0.000 0.000 -22.625
Traceless
 xyz
x -0.551 -2.524 0.000
y -2.524 -0.284 0.000
z 0.000 0.000 0.834
Polar
3z2-r21.669
x2-y2-0.178
xy-2.524
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.921 0.261 0.000
y 0.261 7.779 0.000
z 0.000 0.000 1.616


<r2> (average value of r2) Å2
<r2> 71.844
(<r2>)1/2 8.476