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All results from a given calculation for HNCCNH (Ethenediimine)

using model chemistry: mPW1PW91/6-31+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 mPW1PW91/6-31+G**
 hartrees
Energy at 0K-186.767165
Energy at 298.15K 
HF Energy-186.767165
Nuclear repulsion energy89.501584
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 mPW1PW91/6-31+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 3461 3294 0.00 631.54 0.33 0.50
2 Ag 2180 2075 0.00 44.37 0.36 0.53
3 Ag 1175 1119 0.00 28.51 0.74 0.85
4 Ag 951 905 0.00 49.60 0.19 0.32
5 Ag 340 324 0.00 8.21 0.26 0.41
6 Au 966 920 142.57 0.00 0.00 0.00
7 Au 257 245 0.01 0.00 0.00 0.00
8 Bg 707 673 0.00 6.28 0.75 0.86
9 Bu 3462 3295 14.98 0.00 0.00 0.00
10 Bu 1792 1706 206.63 0.00 0.00 0.00
11 Bu 1134 1079 376.83 0.00 0.00 0.00
12 Bu 282 269 8.36 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8354.3 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 7951.7 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 mPW1PW91/6-31+G**
ABC
8.92858 0.14248 0.14024

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.260 -0.598 0.000
C2 -0.260 0.598 0.000
N3 0.260 -1.843 0.000
N4 -0.260 1.843 0.000
H5 1.206 -2.234 0.000
H6 -1.206 2.234 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.30491.24442.49591.88943.1892
C21.30492.49591.24443.18921.8894
N31.24442.49593.72201.02354.3323
N42.49591.24443.72204.33231.0235
H51.88943.18921.02354.33235.0773
H63.18921.88944.33231.02355.0773

picture of Ethenediimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 156.511 C1 N3 H5 112.472
C2 C1 N3 156.511 C2 N4 H6 112.472
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.134      
2 C 0.134      
3 N -0.432      
4 N -0.432      
5 H 0.297      
6 H 0.297      


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 -20.175 -7.816 0.000
y -7.816 -23.931 0.000
z 0.000 0.000 -23.133
Traceless
 xyz
x 3.357 -7.816 0.000
y -7.816 -2.278 0.000
z 0.000 0.000 -1.079
Polar
3z2-r2-2.159
x2-y23.756
xy-7.816
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.307 -2.082 0.000
y -2.082 11.133 0.000
z 0.000 0.000 2.948


<r2> (average value of r2) Å2
<r2> 80.483
(<r2>)1/2 8.971