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

using model chemistry: B3LYPultrafine/cc-pCVDZ

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 B3LYPultrafine/cc-pCVDZ
 hartrees
Energy at 0K-93.433083
Energy at 298.15K-93.433221
HF Energy-93.433083
Nuclear repulsion energy23.816568
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 B3LYPultrafine/cc-pCVDZ
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 3461 3461 64.31      
2 Σ 2198 2198 1.88      
3 Π 771 771 34.12      
3 Π 771 771 34.12      

Unscaled Zero Point Vibrational Energy (zpe) 3599.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3599.9 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 B3LYPultrafine/cc-pCVDZ
B
1.47178

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/cc-pCVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.502
H2 0.000 0.000 -1.579
N3 0.000 0.000 0.655

Atom - Atom Distances (Å)
  C1 H2 N3
C11.07701.1569
H21.07702.2340
N31.15692.2340

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 B3LYPultrafine/cc-pCVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.009      
2 H 0.088      
3 N -0.079      


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 -2.803 2.803
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 1.272 0.000 0.000
y 0.000 1.272 0.000
z 0.000 0.000 2.965


<r2> (average value of r2) Å2
<r2> 13.779
(<r2>)1/2 3.712