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All results from a given calculation for HCP (Phosphaethyne)

using model chemistry: mPW1PW91/6-31G**

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 mPW1PW91/6-31G**
 hartrees
Energy at 0K-379.976202
Energy at 298.15K-379.976685
Nuclear repulsion energy36.963132
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 mPW1PW91/6-31G**
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 3402 3237 13.86      
2 Σ 1362 1296 0.96      
3 Π 741 705 72.01      
3 Π 741 705 71.96      

Unscaled Zero Point Vibrational Energy (zpe) 3123.3 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 2971.9 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 mPW1PW91/6-31G**
B
0.67035

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.000
H2 0.000 0.000 -2.074
P3 0.000 0.000 0.538

Atom - Atom Distances (Å)
  C1 H2 P3
C11.07371.5380
H21.07372.6117
P31.53802.6117

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 mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.259      
2 H 0.179      
3 P 0.080      


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 -0.717 0.717
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.326 0.000 0.000
y 0.000 -19.326 0.000
z 0.000 0.000 -15.449
Traceless
 xyz
x -1.938 0.000 0.000
y 0.000 -1.938 0.000
z 0.000 0.000 3.877
Polar
3z2-r27.754
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 25.905
(<r2>)1/2 5.090