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All results from a given calculation for HCP (Phosphaethyne)

using model chemistry: B3LYP/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-12.681721
Energy at 298.15K-12.682179
Nuclear repulsion energy9.633196
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/CEP-121G
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 3305 3221 11.90      
2 Σ 1235 1203 0.09      
3 Π 713 694 101.33      
3 Π 712 694 101.26      

Unscaled Zero Point Vibrational Energy (zpe) 2982.4 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 2906.4 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 B3LYP/CEP-121G
B
0.63413

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.685
H2 0.000 0.000 -1.763
P3 0.000 0.000 0.900

Atom - Atom Distances (Å)
  C1 H2 P3
C11.07881.5849
H21.07882.6637
P31.58492.6637

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/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.289      
2 H 0.216      
3 P 0.073      


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 -0.710 0.710
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.968 0.000 0.000
y 0.000 -18.968 0.000
z 0.000 0.000 -15.953
Traceless
 xyz
x -1.508 0.000 0.000
y 0.000 -1.508 0.000
z 0.000 0.000 3.015
Polar
3z2-r26.030
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 2.677 0.000 -0.002
y 0.000 2.678 -0.005
z -0.002 -0.005 6.981


<r2> (average value of r2) Å2
<r2> 20.256
(<r2>)1/2 4.501