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All results from a given calculation for HNCNH (diiminomethane)

using model chemistry: PBE1PBE/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 PBE1PBE/aug-cc-pVTZ
 hartrees
Energy at 0K-148.671714
Energy at 298.15K-148.674130
HF Energy-148.671714
Nuclear repulsion energy60.376608
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 PBE1PBE/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 3632 3492 26.56      
2 A 1305 1254 0.00      
3 A 915 880 12.77      
4 A 721 693 90.51      
5 A 549 528 0.54      
6 B 3629 3489 159.86      
7 B 2250 2163 713.96      
8 B 914 879 425.86      
9 B 553 532 81.67      

Unscaled Zero Point Vibrational Energy (zpe) 7233.6 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 6955.2 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 PBE1PBE/aug-cc-pVTZ
ABC
12.61385 0.34948 0.34946

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/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 1.214 -0.079
N3 0.000 -1.214 -0.079
H4 0.619 1.757 0.505
H5 -0.619 -1.757 0.505

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.21721.21721.92611.9261
N21.21722.42701.00963.0901
N31.21722.42703.09011.0096
H41.92611.00963.09013.7259
H51.92613.09011.00963.7259

picture of diiminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 119.462 C1 N3 H5 119.462
N2 C1 N3 171.070
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.125      
2 N -0.227      
3 N -0.227      
4 H 0.164      
5 H 0.164      


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 1.956 1.956
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.990 4.112 0.000
y 4.112 -16.349 0.000
z 0.000 0.000 -17.499
Traceless
 xyz
x -0.066 4.112 0.000
y 4.112 0.895 0.000
z 0.000 0.000 -0.829
Polar
3z2-r2-1.658
x2-y2-0.641
xy4.112
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.111 0.246 0.000
y 0.246 6.747 0.000
z 0.000 0.000 3.082


<r2> (average value of r2) Å2
<r2> 38.741
(<r2>)1/2 6.224