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All results from a given calculation for CH2 (Methylene)

using model chemistry: PBEPBE/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
2 1 yes C2V 1A1

State 1 (3B1)

Jump to S2C1
Vibrational Frequencies calculated at PBEPBE/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at PBEPBE/aug-cc-pVQZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/aug-cc-pVQZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (1A1)

Jump to S1C1
Energy calculated at PBEPBE/aug-cc-pVQZ
 hartrees
Energy at 0K-39.082821
Energy at 298.15K-39.082655
HF Energy-39.082821
Nuclear repulsion energy5.966454
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 PBEPBE/aug-cc-pVQZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2811 2811 90.70      
2 A1 1359 1359 1.10      
3 B2 2884 2884 71.85      

Unscaled Zero Point Vibrational Energy (zpe) 3527.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3527.0 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 PBEPBE/aug-cc-pVQZ
ABC
19.12133 11.18588 7.05736

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/aug-cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.179
H2 0.000 0.865 -0.536
H3 0.000 -0.865 -0.536

Atom - Atom Distances (Å)
  C1 H2 H3
C11.12181.1218
H21.12181.7294
H31.12181.7294

picture of Methylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.593      
2 H 0.296      
3 H 0.296      


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 -1.711 1.711
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.624 0.000 0.000
y 0.000 -7.327 0.000
z 0.000 0.000 -9.758
Traceless
 xyz
x 1.919 0.000 0.000
y 0.000 0.864 0.000
z 0.000 0.000 -2.783
Polar
3z2-r2-5.566
x2-y20.703
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.170 0.000 0.000
y 0.000 2.717 0.000
z 0.000 0.000 3.100


<r2> (average value of r2) Å2
<r2> 7.198
(<r2>)1/2 2.683