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

using model chemistry: wB97X-D/6-311+G(3df,2p)

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 wB97X-D/6-311+G(3df,2p)
 hartrees
Energy at 0K-93.420393
Energy at 298.15K-93.420529
HF Energy-93.420393
Nuclear repulsion energy24.091000
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 wB97X-D/6-311+G(3df,2p)
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 3449 3449 67.12 23.97 0.23 0.37
2 Σ 2228 2228 2.36 59.89 0.08 0.15
3 Π 775 775 37.08 0.43 0.75 0.86
3 Π 775 775 37.08 0.43 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3613.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3613.2 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 wB97X-D/6-311+G(3df,2p)
B
1.50590

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311+G(3df,2p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.495
H2 0.000 0.000 -1.562
N3 0.000 0.000 0.648

Atom - Atom Distances (Å)
  C1 H2 N3
C11.06701.1433
H21.06702.2103
N31.14332.2103

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 wB97X-D/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.370      
2 H 0.271      
3 N -0.642      


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 -3.083 3.083
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.728 0.000 0.000
y 0.000 -11.728 0.000
z 0.000 0.000 -9.693
Traceless
 xyz
x -1.018 0.000 0.000
y 0.000 -1.018 0.000
z 0.000 0.000 2.035
Polar
3z2-r24.071
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 2.043 0.000 0.000
y 0.000 2.043 0.000
z 0.000 0.000 3.339


<r2> (average value of r2) Å2
<r2> 13.754
(<r2>)1/2 3.709