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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: PBE1PBE/TZVP

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/TZVP
 hartrees
Energy at 0K-148.663101
Energy at 298.15K-148.665478
HF Energy-148.663101
Nuclear repulsion energy60.393836
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/TZVP
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 3645 3498 29.31      
2 A 1315 1262 0.06      
3 A 863 828 10.77      
4 A 719 690 120.42      
5 A 542 520 0.60      
6 B 3643 3496 164.15      
7 B 2274 2182 693.30      
8 B 865 830 440.52      
9 B 544 522 99.90      

Unscaled Zero Point Vibrational Energy (zpe) 7204.9 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 6913.8 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/TZVP
ABC
12.95340 0.34936 0.34926

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.015
N2 0.000 1.213 -0.077
N3 0.000 -1.213 -0.077
H4 0.614 1.772 0.496
H5 -0.614 -1.772 0.496

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21611.21611.93591.9359
N21.21612.42521.00943.1004
N31.21612.42523.10041.0094
H41.93591.00943.10043.7504
H51.93593.10041.00943.7504

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 120.602 C1 N3 H5 120.602
N2 C1 N3 171.266
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.218      
2 N -0.348      
3 N -0.348      
4 H 0.239      
5 H 0.239      


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 2.237 2.237
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.858 4.505 0.000
y 4.505 -16.329 0.000
z 0.000 0.000 -17.436
Traceless
 xyz
x 0.024 4.505 0.000
y 4.505 0.819 0.000
z 0.000 0.000 -0.843
Polar
3z2-r2-1.685
x2-y2-0.530
xy4.505
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.237 0.249 0.000
y 0.249 6.444 0.000
z 0.000 0.000 2.211


<r2> (average value of r2) Å2
<r2> 38.735
(<r2>)1/2 6.224