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All results from a given calculation for HNCCNH (Ethenediimine)

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 C2H 1AG
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-31.366203
Energy at 298.15K 
HF Energy-31.366203
Nuclear repulsion energy45.530776
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 Ag 3718 3339 0.00 533.93 0.33 0.49
2 Ag 2343 2104 0.00 101.76 0.40 0.57
3 Ag 1283 1152 0.00 26.25 0.75 0.86
4 Ag 990 889 0.00 57.83 0.24 0.39
5 Ag 297 267 0.00 19.25 0.44 0.61
6 Au 1030 925 160.65 0.00 0.00 0.00
7 Au 274 246 0.15 0.00 0.00 0.00
8 Bg 741 665 0.00 16.86 0.75 0.86
9 Bu 3718 3339 44.65 0.00 0.00 0.00
10 Bu 1891 1698 419.03 0.00 0.00 0.00
11 Bu 1260 1132 483.74 0.00 0.00 0.00
12 Bu 299 269 6.31 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8921.6 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 8011.6 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
9.00812 0.14097 0.13879

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.256 -0.613 0.000
C2 -0.256 0.613 0.000
N3 0.256 -1.853 0.000
N4 -0.256 1.853 0.000
H5 1.200 -2.220 0.000
H6 -1.200 2.220 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.32831.24052.51881.86403.1852
C21.32832.51881.24053.18521.8640
N31.24052.51883.74191.01264.3259
N42.51881.24053.74194.32591.0126
H51.86403.18521.01264.32595.0473
H63.18521.86404.32591.01265.0473

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 157.330 C1 N3 H5 111.241
C2 C1 N3 157.330 C2 N4 H6 111.241
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 -0.316      
2 C -0.316      
3 N -0.022      
4 N -0.022      
5 H 0.338      
6 H 0.338      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.070 -8.053 0.000
y -8.053 -24.879 0.000
z 0.000 0.000 -23.221
Traceless
 xyz
x 3.980 -8.053 0.000
y -8.053 -3.234 0.000
z 0.000 0.000 -0.746
Polar
3z2-r2-1.492
x2-y24.809
xy-8.053
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.935 -2.455 0.000
y -2.455 10.535 0.000
z 0.000 0.000 2.586


<r2> (average value of r2) Å2
<r2> 65.464
(<r2>)1/2 8.091