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All results from a given calculation for HCP (Phosphaethyne)

using model chemistry: CCSD/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 CCSD/cc-pVTZ
 hartrees
Energy at 0K-379.463704
Energy at 298.15K-379.464164
HF Energy-379.150289
Nuclear repulsion energy36.863196
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/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 3374 3175 14.76      
2 Σ 1331 1253 0.28      
3 Π 709 667 71.84      
3 Π 709 667 71.84      

Unscaled Zero Point Vibrational Energy (zpe) 3061.6 cm-1
Scaled (by 0.9412) Zero Point Vibrational Energy (zpe) 2881.6 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 CCSD/cc-pVTZ
B
0.66654

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.002
H2 0.000 0.000 -2.072
P3 0.000 0.000 0.539

Atom - Atom Distances (Å)
  C1 H2 P3
C11.07031.5412
H21.07032.6115
P31.54122.6115

picture of Phosphaethyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 P3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability