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

using model chemistry: CCSD=FULL/aug-cc-pVDZ

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 CCSD=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-93.195492
Energy at 298.15K-93.195593
HF Energy-92.885376
Nuclear repulsion energy23.620845
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 CCSD=FULL/aug-cc-pVDZ
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 3446 3446 63.12      
2 Σ 2143 2143 0.27      
3 Π 728 728 36.56      
3 Π 728 728 36.56      

Unscaled Zero Point Vibrational Energy (zpe) 3522.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3522.4 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 CCSD=FULL/aug-cc-pVDZ
B
1.44761

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.507
H2 0.000 0.000 -1.586
N3 0.000 0.000 0.661

Atom - Atom Distances (Å)
  C1 H2 N3
C11.07911.1679
H21.07912.2470
N31.16792.2470

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