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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: PBE1PBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBE1PBE/6-31+G**
 hartrees
Energy at 0K-148.620902
Energy at 298.15K-148.623276
HF Energy-148.620902
Nuclear repulsion energy60.042007
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 PBE1PBE/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 A 3660 3496 28.76      
2 A 1310 1252 0.12      
3 A 885 846 9.04      
4 A 728 695 118.49      
5 A 539 515 0.24      
6 B 3657 3494 159.55      
7 B 2262 2161 709.88      
8 B 887 847 443.75      
9 B 534 510 85.53      

Unscaled Zero Point Vibrational Energy (zpe) 7230.7 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 6907.5 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 PBE1PBE/6-31+G**
ABC
12.55210 0.34544 0.34542

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.022
N2 0.000 1.220 -0.081
N3 0.000 -1.220 -0.081
H4 0.619 1.769 0.502
H5 -0.619 -1.769 0.502

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22481.22481.93481.9348
N21.22482.44101.01193.1083
N31.22482.44103.10831.0119
H41.93481.01193.10833.7490
H51.93483.10831.01193.7490

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.470 C1 N3 H5 119.470
N2 C1 N3 170.349
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.515      
2 N -0.573      
3 N -0.573      
4 H 0.316      
5 H 0.316      


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 2.287 2.287
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.021 4.605 0.000
y 4.605 -16.535 0.000
z 0.000 0.000 -17.606
Traceless
 xyz
x 0.049 4.605 0.000
y 4.605 0.779 0.000
z 0.000 0.000 -0.828
Polar
3z2-r2-1.656
x2-y2-0.487
xy4.605
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.384 0.185 0.000
y 0.185 6.707 0.000
z 0.000 0.000 2.368


<r2> (average value of r2) Å2
<r2> 39.131
(<r2>)1/2 6.256