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

using model chemistry: MP3=FULL/daug-cc-pVTZ

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 MP3=FULL/daug-cc-pVTZ
 hartrees
Energy at 0K-93.294195
Energy at 298.15K-93.294312
HF Energy-92.910620
Nuclear repulsion energy24.134367
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 MP3=FULL/daug-cc-pVTZ
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 3498 3498 72.54      
2 Σ 2270 2270 1.65      
3 Π 752 752 34.99      
3 Π 752 752 34.99      

Unscaled Zero Point Vibrational Energy (zpe) 3635.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3635.9 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 MP3=FULL/daug-cc-pVTZ
B
1.51127

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/daug-cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.496
H2 0.000 0.000 -1.554
N3 0.000 0.000 0.647

Atom - Atom Distances (Å)
  C1 H2 N3
C11.05821.1426
H21.05822.2008
N31.14262.2008

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