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All results from a given calculation for HCP (Phosphaethyne)

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-378.054627
Energy at 298.15K-378.055109
Nuclear repulsion energy36.285881
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 B3LYP/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 3391 3272 15.93      
2 Σ 1279 1234 1.31      
3 Π 744 718 105.84      
3 Π 744 718 105.84      

Unscaled Zero Point Vibrational Energy (zpe) 3078.3 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 2970.2 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 B3LYP/3-21G
B
0.64524

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.023
H2 0.000 0.000 -2.093
P3 0.000 0.000 0.549

Atom - Atom Distances (Å)
  C1 H2 P3
C11.07021.5711
H21.07022.6413
P31.57112.6413

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 B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.667     -0.306
2 H 0.239     0.246
3 P 0.429     0.061


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 -0.843 0.843
CHELPG        
AIM        
ESP 0.000 0.000 -0.802 0.802


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.627 0.000 0.000
y 0.000 -19.627 0.000
z 0.000 0.000 -16.163
Traceless
 xyz
x -1.732 0.000 0.000
y 0.000 -1.732 0.000
z 0.000 0.000 3.464
Polar
3z2-r26.928
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 2.150 0.000 0.000
y 0.000 2.150 0.000
z 0.000 0.000 6.004


<r2> (average value of r2) Å2
<r2> 26.704
(<r2>)1/2 5.168