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All results from a given calculation for HCN (Hydrogen cyanide)

using model chemistry: TPSSh/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at TPSSh/cc-pVDZ
 hartrees
Energy at 0K-93.433825
Energy at 298.15K-93.433957
HF Energy-93.433825
Nuclear repulsion energy23.738095
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 TPSSh/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 3463 3368 56.57 30.56 0.26 0.41
2 Σ 2177 2117 1.40 38.56 0.21 0.35
3 Π 770 749 36.41 0.09 0.75 0.86
3 Π 770 749 36.41 0.09 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3589.9 cm-1
Scaled (by 0.9724) Zero Point Vibrational Energy (zpe) 3490.8 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 TPSSh/cc-pVDZ
B
1.46206

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.504
H2 0.000 0.000 -1.581
N3 0.000 0.000 0.658

Atom - Atom Distances (Å)
  C1 H2 N3
C11.07701.1615
H21.07702.2385
N31.16152.2385

picture of Hydrogen cyanide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 N3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.018      
2 H 0.109      
3 N -0.127      


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 -2.805 2.805
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.275 0.000 0.000
y 0.000 1.275 0.000
z 0.000 0.000 3.005


<r2> (average value of r2) Å2
<r2> 13.796
(<r2>)1/2 3.714