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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-148.783158
Energy at 298.15K-148.785568
HF Energy-148.783158
Nuclear repulsion energy60.349099
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 mPW1PW91/6-311G**
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 3641 3484 29.95      
2 A 1307 1250 0.09      
3 A 914 875 9.63      
4 A 736 704 105.69      
5 A 543 519 0.22      
6 B 3639 3482 129.75      
7 B 2273 2175 626.05      
8 B 915 875 428.16      
9 B 545 522 85.61      

Unscaled Zero Point Vibrational Energy (zpe) 7257.3 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 6943.0 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 mPW1PW91/6-311G**
ABC
12.46514 0.34932 0.34923

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.014
N2 0.000 1.215 -0.079
N3 0.000 -1.215 -0.079
H4 0.625 1.750 0.507
H5 -0.625 -1.750 0.507

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21811.21811.92241.9224
N21.21812.42911.01003.0858
N31.21812.42913.08581.0100
H41.92241.01003.08583.7163
H51.92243.08581.01003.7163

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 118.978 C1 N3 H5 118.978
N2 C1 N3 171.258
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.461      
2 N -0.462      
3 N -0.462      
4 H 0.232      
5 H 0.232      


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 2.162 2.162
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.505 4.260 0.000
y 4.260 -16.222 0.000
z 0.000 0.000 -17.067
Traceless
 xyz
x 0.140 4.260 0.000
y 4.260 0.564 0.000
z 0.000 0.000 -0.704
Polar
3z2-r2-1.408
x2-y2-0.283
xy4.260
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.026 0.330 0.000
y 0.330 5.932 0.000
z 0.000 0.000 1.997


<r2> (average value of r2) Å2
<r2> 38.526
(<r2>)1/2 6.207