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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-148.754331
Energy at 298.15K-148.756759
HF Energy-148.754331
Nuclear repulsion energy60.265016
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 mPW1PW91/6-31G(2df,p)
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 3650 3485 28.70      
2 A 1306 1247 0.01      
3 A 927 885 11.85      
4 A 745 711 94.01      
5 A 552 527 0.09      
6 B 3648 3483 128.14      
7 B 2275 2172 572.29      
8 B 921 880 420.16      
9 B 558 533 82.48      

Unscaled Zero Point Vibrational Energy (zpe) 7291.1 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 6960.8 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 mPW1PW91/6-31G(2df,p)
ABC
12.41410 0.34828 0.34819

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.015
N2 0.000 1.217 -0.079
N3 0.000 -1.217 -0.079
H4 0.625 1.750 0.508
H5 -0.625 -1.750 0.508

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22031.22031.92241.9224
N21.22032.43331.00983.0878
N31.22032.43333.08781.0098
H41.92241.00983.08783.7159
H51.92243.08781.00983.7159

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.788 C1 N3 H5 118.788
N2 C1 N3 171.204
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.507      
2 N -0.550      
3 N -0.550      
4 H 0.297      
5 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 2.007 2.007
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.341 4.021 0.000
y 4.021 -15.840 0.000
z 0.000 0.000 -16.859
Traceless
 xyz
x 0.009 4.021 0.000
y 4.021 0.760 0.000
z 0.000 0.000 -0.769
Polar
3z2-r2-1.537
x2-y2-0.501
xy4.021
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.185 0.373 0.000
y 0.373 5.854 0.000
z 0.000 0.000 2.144


<r2> (average value of r2) Å2
<r2> 38.443
(<r2>)1/2 6.200