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

using model chemistry: BLYP/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 BLYP/cc-pVDZ
 hartrees
Energy at 0K-93.406875
Energy at 298.15K-93.406986
HF Energy-93.406875
Nuclear repulsion energy23.574249
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 BLYP/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 3374 3379 50.75 35.18 0.27 0.42
2 Σ 2107 2111 0.43 37.47 0.22 0.36
3 Π 742 743 33.52 0.00 0.75 0.86
3 Π 742 743 33.52 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3482.7 cm-1
Scaled (by 1.0016) Zero Point Vibrational Energy (zpe) 3488.2 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 BLYP/cc-pVDZ
B
1.44194

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.507
H2 0.000 0.000 -1.591
N3 0.000 0.000 0.662

Atom - Atom Distances (Å)
  C1 H2 N3
C11.08391.1697
H21.08392.2535
N31.16972.2535

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

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.010      
2 H 0.071      
3 N -0.061      


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 -2.674 2.674
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.471 0.000 0.000
y 0.000 -11.471 0.000
z 0.000 0.000 -9.656
Traceless
 xyz
x -0.908 0.000 0.000
y 0.000 -0.908 0.000
z 0.000 0.000 1.816
Polar
3z2-r23.631
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.282 0.000 0.000
y 0.000 1.282 0.000
z 0.000 0.000 3.042


<r2> (average value of r2) Å2
<r2> 13.934
(<r2>)1/2 3.733