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All results from a given calculation for HCP (Phosphaethyne)

using model chemistry: LSDA/3-21G*

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 LSDA/3-21G*
 hartrees
Energy at 0K-376.957725
Energy at 298.15K-376.958208
Nuclear repulsion energy36.845636
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 LSDA/3-21G*
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 3295 3236 15.91      
2 Σ 1339 1315 1.45      
3 Π 743 730 87.05      
3 Π 743 730 87.05      

Unscaled Zero Point Vibrational Energy (zpe) 3059.8 cm-1
Scaled (by 0.982) Zero Point Vibrational Energy (zpe) 3004.8 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 LSDA/3-21G*
B
0.66627

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/3-21G*

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 -2.085
P3 0.000 0.000 0.540

Atom - Atom Distances (Å)
  C1 H2 P3
C11.08321.5418
H21.08322.6250
P31.54182.6250

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
Charges from optimized geometry at LSDA/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.414      
2 H 0.257      
3 P 0.157      


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 -0.647 0.647
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.412 0.000 0.000
y 0.000 -19.412 0.000
z 0.000 0.000 -15.398
Traceless
 xyz
x -2.007 0.000 0.000
y 0.000 -2.007 0.000
z 0.000 0.000 4.015
Polar
3z2-r28.029
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 2.296 0.000 0.000
y 0.000 2.296 0.000
z 0.000 0.000 5.878


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000