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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: PBEPBEultrafine/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBEultrafine/daug-cc-pVTZ
 hartrees
Energy at 0K-114.417330
Energy at 298.15K-114.418762
HF Energy-114.417330
Nuclear repulsion energy31.121738
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 PBEPBEultrafine/daug-cc-pVTZ
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 2792 2792 81.13 207.03 0.11 0.19
2 A1 1760 1760 103.52 7.98 0.34 0.51
3 A1 1478 1478 9.27 8.76 0.43 0.60
4 B1 1149 1149 6.28 0.53 0.75 0.86
5 B2 2837 2837 139.15 136.35 0.75 0.86
6 B2 1217 1217 8.84 1.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5616.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5616.2 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 PBEPBEultrafine/daug-cc-pVTZ
ABC
9.31353 1.28425 1.12863

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.679
C2 0.000 0.000 -0.531
H3 0.000 0.948 -1.123
H4 0.000 -0.948 -1.123

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20952.03582.0358
C21.20951.11751.1175
H32.03581.11751.8952
H42.03581.11751.8952

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.007 O1 C2 H4 122.007
H3 C2 H4 115.987
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.726      
2 C -0.336      
3 H 0.531      
4 H 0.531      


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 -2.229 2.229
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.820 0.000 0.000
y 0.000 -11.799 0.000
z 0.000 0.000 -12.462
Traceless
 xyz
x 0.311 0.000 0.000
y 0.000 0.342 0.000
z 0.000 0.000 -0.653
Polar
3z2-r2-1.307
x2-y2-0.021
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.030 0.000 0.000
y 0.000 2.941 0.000
z 0.000 0.000 3.538


<r2> (average value of r2) Å2
<r2> 17.206
(<r2>)1/2 4.148