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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: B2PLYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at B2PLYP/6-31+G**
 hartrees
Energy at 0K-186.639472
Energy at 298.15K 
HF Energy-186.437564
Nuclear repulsion energy89.029242
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 B2PLYP/6-31+G**
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 3451 3287 0.00 612.40 0.34 0.50
2 Ag 2079 1980 0.00 35.64 0.36 0.53
3 Ag 1173 1117 0.00 33.65 0.72 0.83
4 Ag 929 884 0.00 49.77 0.17 0.29
5 Ag 345 329 0.00 7.67 0.18 0.31
6 Au 953 908 137.80 0.00 0.00 0.00
7 Au 251 239 0.04 0.00 0.00 0.00
8 Bg 714 680 0.00 6.03 0.75 0.86
9 Bu 3452 3287 16.79 0.00 0.31 0.48
10 Bu 1739 1656 162.78 0.00 0.00 0.00
11 Bu 1122 1069 418.27 0.00 0.00 0.00
12 Bu 277 264 8.80 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8242.4 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 7850.1 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 B2PLYP/6-31+G**
ABC
8.24204 0.14182 0.13942

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31+G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.298 -0.587 0.000
C2 -0.298 0.587 0.000
N3 0.298 -1.841 0.000
N4 -0.298 1.841 0.000
H5 1.245 -2.232 0.000
H6 -1.245 2.232 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.31661.25352.49961.89773.2132
C21.31662.49961.25353.21321.8977
N31.25352.49963.72891.02444.3545
N42.49961.25353.72894.35451.0244
H51.89773.21321.02444.35455.1106
H63.21321.89774.35451.02445.1106

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 153.100 C1 N3 H5 112.451
C2 C1 N3 153.100 C2 N4 H6 112.451
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.127      
2 C 0.127      
3 N -0.414      
4 N -0.414      
5 H 0.287      
6 H 0.287      


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 -20.333 -7.756 0.000
y -7.756 -24.344 0.000
z 0.000 0.000 -23.443
Traceless
 xyz
x 3.561 -7.756 0.000
y -7.756 -2.456 0.000
z 0.000 0.000 -1.105
Polar
3z2-r2-2.210
x2-y24.012
xy-7.756
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.586 -2.247 0.000
y -2.247 11.243 0.000
z 0.000 0.000 3.072


<r2> (average value of r2) Å2
<r2> 81.107
(<r2>)1/2 9.006