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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-148.757849
Energy at 298.15K-148.760259
HF Energy-148.757849
Nuclear repulsion energy60.235467
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 B3PW91/6-311G*
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 3618 3483 19.68      
2 A 1297 1248 0.07      
3 A 926 892 11.58      
4 A 740 713 116.67      
5 A 543 523 0.34      
6 B 3617 3482 94.42      
7 B 2260 2175 598.34      
8 B 929 895 468.66      
9 B 545 525 82.42      

Unscaled Zero Point Vibrational Energy (zpe) 7237.7 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 6967.8 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 B3PW91/6-311G*
ABC
12.69502 0.34771 0.34760

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.017
N2 0.000 1.216 -0.079
N3 0.000 -1.216 -0.079
H4 0.620 1.767 0.499
H5 -0.620 -1.767 0.499

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22001.22001.93381.9338
N21.22002.43251.01103.1015
N31.22002.43253.10151.0110
H41.93381.01103.10153.7457
H51.93383.10151.01103.7457

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.877 C1 N3 H5 119.877
N2 C1 N3 170.956
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.547      
2 N -0.614      
3 N -0.614      
4 H 0.341      
5 H 0.341      


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 2.252 2.252
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.582 4.450 0.000
y 4.450 -16.036 0.000
z 0.000 0.000 -17.178
Traceless
 xyz
x 0.025 4.450 0.000
y 4.450 0.844 0.000
z 0.000 0.000 -0.869
Polar
3z2-r2-1.737
x2-y2-0.546
xy4.450
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.972 0.321 0.000
y 0.321 5.972 0.000
z 0.000 0.000 1.941


<r2> (average value of r2) Å2
<r2> 38.678
(<r2>)1/2 6.219