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

using model chemistry: B2PLYP=FULL/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 B2PLYP=FULL/cc-pCVDZ
 hartrees
Energy at 0K-93.366656
Energy at 298.15K-93.366781
HF Energy-93.247143
Nuclear repulsion energy23.676987
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/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 3479 3479 68.10      
2 Σ 2122 2122 0.32      
3 Π 753 753 34.88      
3 Π 753 753 34.88      

Unscaled Zero Point Vibrational Energy (zpe) 3553.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3553.8 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 B2PLYP=FULL/cc-pCVDZ
B
1.45449

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/cc-pCVDZ

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 -1.582
N3 0.000 0.000 0.659

Atom - Atom Distances (Å)
  C1 H2 N3
C11.07601.1653
H21.07602.2412
N31.16532.2412

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