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

using model chemistry: B2PLYP=FULL/6-31G**

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 B2PLYP=FULL/6-31G**
 hartrees
Energy at 0K-93.340803
Energy at 298.15K-93.340922
HF Energy-93.238935
Nuclear repulsion energy23.727983
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 B2PLYP=FULL/6-31G**
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 3505 3505 60.89 29.81 0.23 0.38
2 Σ 2143 2143 0.48 30.03 0.24 0.39
3 Π 757 757 35.88 0.04 0.75 0.86
3 Π 757 757 35.88 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3581.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3581.0 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 B2PLYP=FULL/6-31G**
B
1.46062

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.506
H2 0.000 0.000 -1.572
N3 0.000 0.000 0.658

Atom - Atom Distances (Å)
  C1 H2 N3
C11.06621.1643
H21.06622.2305
N31.16432.2305

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