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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: LSDA/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at LSDA/cc-pVTZ
 hartrees
Energy at 0K-148.038894
Energy at 298.15K-148.041230
HF Energy-148.038894
Nuclear repulsion energy60.256456
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 LSDA/cc-pVTZ
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 3550 3511 31.73      
2 A 1294 1280 0.02      
3 A 846 836 15.98      
4 A 666 658 95.17      
5 A 535 529 1.70      
6 B 3547 3509 170.43      
7 B 2262 2237 563.01      
8 B 854 844 411.49      
9 B 538 532 77.92      

Unscaled Zero Point Vibrational Energy (zpe) 7045.1 cm-1
Scaled (by 0.9891) Zero Point Vibrational Energy (zpe) 6968.3 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 LSDA/cc-pVTZ
ABC
13.13027 0.34787 0.34785

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.020
N2 0.000 1.213 -0.079
N3 0.000 -1.213 -0.079
H4 0.607 1.796 0.492
H5 -0.607 -1.796 0.492

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21701.21701.95421.9542
N21.21702.42611.01723.1226
N31.21702.42613.12261.0172
H41.95421.01723.12263.7924
H51.95423.12261.01723.7924

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 121.751 C1 N3 H5 121.751
N2 C1 N3 170.740
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.120      
2 N -0.247      
3 N -0.247      
4 H 0.187      
5 H 0.187      


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 1.966 1.966
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.891 4.105 0.000
y 4.105 -15.403 0.000
z 0.000 0.000 -17.399
Traceless
 xyz
x -0.490 4.105 0.000
y 4.105 1.743 0.000
z 0.000 0.000 -1.252
Polar
3z2-r2-2.505
x2-y2-1.489
xy4.105
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.505 0.302 0.000
y 0.302 6.343 0.000
z 0.000 0.000 2.482


<r2> (average value of r2) Å2
<r2> 38.711
(<r2>)1/2 6.222