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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: mPW1PW91/aug-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 mPW1PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-148.803969
Energy at 298.15K-148.806389
HF Energy-148.803969
Nuclear repulsion energy60.422073
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/aug-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 3638 3485 26.29      
2 A 1305 1250 0.00      
3 A 918 879 13.28      
4 A 723 692 90.08      
5 A 550 527 0.48      
6 B 3635 3482 157.74      
7 B 2250 2155 718.28      
8 B 916 878 431.00      
9 B 555 531 80.85      

Unscaled Zero Point Vibrational Energy (zpe) 7243.8 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 6940.3 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 mPW1PW91/aug-cc-pVTZ
ABC
12.68687 0.34992 0.34990

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.016
N2 0.000 1.213 -0.079
N3 0.000 -1.213 -0.079
H4 0.616 1.758 0.504
H5 -0.616 -1.758 0.504

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21631.21631.92571.9257
N21.21632.42531.00843.0892
N31.21632.42533.08921.0084
H41.92571.00843.08923.7253
H51.92573.08921.00843.7253

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.611 C1 N3 H5 119.611
N2 C1 N3 171.092
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.220      
2 N -0.252      
3 N -0.252      
4 H 0.142      
5 H 0.142      


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 1.957 1.957
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.955 4.097 0.000
y 4.097 -16.309 0.000
z 0.000 0.000 -17.449
Traceless
 xyz
x -0.075 4.097 0.000
y 4.097 0.893 0.000
z 0.000 0.000 -0.818
Polar
3z2-r2-1.636
x2-y2-0.646
xy4.097
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.099 0.242 0.000
y 0.242 6.736 0.000
z 0.000 0.000 3.071


<r2> (average value of r2) Å2
<r2> 38.681
(<r2>)1/2 6.219