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All results from a given calculation for HCP (Phosphaethyne)

using model chemistry: HF/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 HF/cc-pVTZ
 hartrees
Energy at 0K-379.151513
Energy at 298.15K-379.152065
Nuclear repulsion energy37.550372
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 HF/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 3513 3197 19.80      
2 Σ 1465 1333 1.94      
3 Π 826 752 88.97      
3 Π 826 752 88.97      

Unscaled Zero Point Vibrational Energy (zpe) 3314.7 cm-1
Scaled (by 0.9101) Zero Point Vibrational Energy (zpe) 3016.7 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 HF/cc-pVTZ
B
0.69197

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.983
H2 0.000 0.000 -2.045
P3 0.000 0.000 0.530

Atom - Atom Distances (Å)
  C1 H2 P3
C11.06161.5131
H21.06162.5747
P31.51312.5747

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

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.352 -0.420 -1.559 -0.511
2 H 0.229 0.281 0.148 0.336
3 P 0.123 0.139 1.408 0.176


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.397 0.397
CHELPG        
AIM 0.000 0.000 -3.892 3.892
ESP 0.000 0.000 -0.435 0.435


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.025 0.000 0.000
y 0.000 -20.025 0.000
z 0.000 0.000 -15.433
Traceless
 xyz
x -2.296 0.000 0.000
y 0.000 -2.296 0.000
z 0.000 0.000 4.592
Polar
3z2-r29.184
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.341 0.000 0.000
y 0.000 3.341 0.000
z 0.000 0.000 6.611


<r2> (average value of r2) Å2
<r2> 25.744
(<r2>)1/2 5.074