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

using model chemistry: CID/Def2TZVPP

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 CID/Def2TZVPP
 hartrees
Energy at 0K-93.231627
Energy at 298.15K-93.231769
HF Energy-92.912950
Nuclear repulsion energy24.122769
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 CID/Def2TZVPP
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 3527 3527 72.25      
2 Σ 2263 2263 2.16      
3 Π 784 784 35.57      
3 Π 784 784 35.57      

Unscaled Zero Point Vibrational Energy (zpe) 3679.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3679.0 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 CID/Def2TZVPP
B
1.50985

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/Def2TZVPP

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 -1.557
N3 0.000 0.000 0.647

Atom - Atom Distances (Å)
  C1 H2 N3
C11.06181.1426
H21.06182.2043
N31.14262.2043

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