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

using model chemistry: CID/6-311G*

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/6-311G*
 hartrees
Energy at 0K-93.173495
Energy at 298.15K-93.173632
HF Energy-92.895746
Nuclear repulsion energy24.011645
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/6-311G*
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 3521 3271 60.66      
2 Σ 2247 2088 1.92      
3 Π 779 724 40.56      
3 Π 779 724 40.56      

Unscaled Zero Point Vibrational Energy (zpe) 3663.3 cm-1
Scaled (by 0.9291) Zero Point Vibrational Energy (zpe) 3403.6 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/6-311G*
B
1.49596

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.498
H2 0.000 0.000 -1.564
N3 0.000 0.000 0.650

Atom - Atom Distances (Å)
  C1 H2 N3
C11.06591.1480
H21.06592.2139
N31.14802.2139

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