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

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes 1A'
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-186.818358
Energy at 298.15K 
HF Energy-186.818358
Nuclear repulsion energy92.599834
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 mPW1PW91/6-31G(2df,p)
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' 3223 3077 5.10 76.38 0.60 0.75
2 A' 3103 2963 13.26 82.31 0.13 0.22
3 A' 2346 2240 30.70 164.73 0.29 0.45
4 A' 1737 1659 34.38 47.42 0.25 0.40
5 A' 1508 1440 11.54 22.82 0.43 0.60
6 A' 1229 1173 10.35 3.80 0.75 0.86
7 A' 976 932 5.20 1.25 0.01 0.03
8 A' 643 614 6.18 2.70 0.23 0.37
9 A' 254 243 5.73 8.15 0.49 0.66
10 A" 1102 1052 17.31 0.12 0.75 0.86
11 A" 792 756 1.93 5.64 0.75 0.86
12 A" 393 375 9.56 0.53 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8652.7 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 8260.7 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 mPW1PW91/6-31G(2df,p)
ABC
2.25394 0.18092 0.16748

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.087 -1.551 0.000
N2 -0.604 -0.484 0.000
C3 0.000 0.708 0.000
N4 0.424 1.787 0.000
H5 -0.443 -2.500 0.000
H6 1.179 -1.567 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 N4 H5 H6
C11.27152.26043.35481.08721.0915
N21.27151.33612.49282.02282.0864
C32.26041.33611.15953.23852.5626
N43.35482.49281.15954.37393.4383
H51.08722.02283.23854.37391.8705
H61.09152.08642.56263.43831.8705

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 120.173 N2 C1 H5 117.885
N2 C1 H6 123.817 N2 C3 N4 174.574
H5 C1 H6 118.298
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.206      
2 N -0.224      
3 C 0.409      
4 N -0.345      
5 H 0.184      
6 H 0.181      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.406 -4.370 0.000 4.389
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.089 -2.538 0.000
y -2.538 -23.127 0.000
z 0.000 0.000 -22.273
Traceless
 xyz
x -0.389 -2.538 0.000
y -2.538 -0.446 0.000
z 0.000 0.000 0.836
Polar
3z2-r21.671
x2-y20.038
xy-2.538
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.686 0.367 0.000
y 0.367 8.041 0.000
z 0.000 0.000 2.536


<r2> (average value of r2) Å2
<r2> 69.842
(<r2>)1/2 8.357