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All results from a given calculation for HN=C=C(CN)2 (Dicyanoketenimine)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-51.313238
Energy at 298.15K 
HF Energy-51.313238
Nuclear repulsion energy100.782664
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/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' 3893 3510 415.39 258.63 0.31 0.47
2 A' 2498 2252 36.06 229.51 0.08 0.16
3 A' 2279 2054 995.45 18.01 0.75 0.86
4 A' 1430 1289 1.11 49.16 0.24 0.39
5 A' 694 626 34.51 30.78 0.39 0.56
6 A' 690 622 25.85 18.44 0.50 0.66
7 A' 649 585 6.08 0.88 0.37 0.54
8 A' 570 514 595.50 14.68 0.35 0.52
9 A' 477 430 343.41 4.87 0.53 0.69
10 A' 184 166 4.84 1.02 0.75 0.85
11 A' 153 138 6.42 10.96 0.72 0.84
12 A" 2497 2250 75.57 168.74 0.75 0.86
13 A" 1332 1200 10.61 6.42 0.75 0.86
14 A" 840 757 167.64 0.03 0.75 0.86
15 A" 687 619 5.59 1.70 0.75 0.86
16 A" 479 432 9.77 8.68 0.75 0.86
17 A" 438 395 0.72 0.34 0.75 0.86
18 A" 150 135 0.09 11.69 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9969.9 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 8986.9 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/CEP-31G
ABC
0.09244 0.09166 0.04612

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.006 -0.060 0.000
C2 -0.006 1.302 0.000
N3 0.104 2.492 0.000
C4 -0.006 -0.775 1.257
C5 -0.006 -0.775 -1.257
N6 -0.006 -1.349 2.268
N7 -0.006 -1.349 -2.268
H8 -0.511 3.283 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 C4 C5 N6 N7 H8
C11.36142.55441.44621.44622.60892.60893.3810
C21.36141.19572.42742.42743.48863.48862.0451
N32.55441.19573.50243.50244.46244.46241.0019
C41.44622.42743.50242.51401.16263.57144.2784
C51.44622.42743.50242.51403.57141.16264.2784
N62.60893.48864.46241.16263.57144.53585.1826
N72.60893.48864.46243.57141.16264.53585.1826
H83.38102.04511.00194.27844.27845.18265.1826

picture of Dicyanoketenimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 174.742 C1 C4 N6 179.965
C1 C5 N7 179.965 C2 C1 C4 119.638
C2 C1 C5 119.638 C2 N3 H8 136.874
C4 C1 C5 120.724
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.054      
2 C -0.277      
3 N 0.062      
4 C -0.518      
5 C -0.518      
6 N 0.395      
7 N 0.395      
8 H 0.407      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.615 6.570 0.000 6.765
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.386 -5.383 0.000
y -5.383 -34.069 0.000
z 0.000 0.000 -56.691
Traceless
 xyz
x 5.994 -5.383 0.000
y -5.383 13.969 0.000
z 0.000 0.000 -19.963
Polar
3z2-r2-39.927
x2-y2-5.317
xy-5.383
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.332 0.145 0.000
y 0.145 12.012 0.000
z 0.000 0.000 8.604


<r2> (average value of r2) Å2
<r2> 163.124
(<r2>)1/2 12.772