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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: B3LYP/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3LYP/CEP-31G*
 hartrees
Energy at 0K-26.622703
Energy at 298.15K-26.625067
HF Energy-26.622703
Nuclear repulsion energy31.489931
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 B3LYP/CEP-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3557 3435 16.61      
2 A 1261 1218 0.03      
3 A 961 928 3.97      
4 A 740 715 101.31      
5 A 512 495 0.01      
6 B 3556 3434 75.18      
7 B 2183 2108 613.75      
8 B 955 922 420.52      
9 B 512 494 72.84      

Unscaled Zero Point Vibrational Energy (zpe) 7118.3 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 6874.1 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 B3LYP/CEP-31G*
ABC
11.33811 0.33554 0.33547

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.024
N2 0.000 1.243 -0.086
N3 0.000 -1.243 -0.086
H4 0.647 1.746 0.528
H5 -0.647 -1.746 0.528

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.24761.24761.92891.9289
N21.24762.48541.02413.1189
N31.24762.48543.11891.0241
H41.92891.02413.11893.7241
H51.92893.11891.02413.7241

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 115.880 C1 N3 H5 115.880
N2 C1 N3 169.868
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.520      
2 N -0.050      
3 N -0.050      
4 H 0.310      
5 H 0.310      


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 2.266 2.266
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.651 4.499 0.000
y 4.499 -16.638 0.000
z 0.000 0.000 -17.244
Traceless
 xyz
x 0.290 4.499 0.000
y 4.499 0.309 0.000
z 0.000 0.000 -0.599
Polar
3z2-r2-1.198
x2-y2-0.013
xy4.499
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.204 0.343 0.000
y 0.343 6.194 0.000
z 0.000 0.000 2.171


<r2> (average value of r2) Å2
<r2> 33.532
(<r2>)1/2 5.791