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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: PBE1PBE/aug-cc-pCVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBE1PBE/aug-cc-pCVTZ
 hartrees
Energy at 0K-114.418044
Energy at 298.15K 
HF Energy-114.418044
Nuclear repulsion energy31.446119
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 PBE1PBE/aug-cc-pCVTZ
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 2901 2901 70.92 183.13 0.10 0.19
2 A1 1847 1847 114.65 9.06 0.29 0.45
3 A1 1527 1527 11.12 8.20 0.40 0.57
4 B1 1202 1202 6.16 0.22 0.75 0.86
5 B2 2962 2962 111.91 100.97 0.75 0.86
6 B2 1263 1263 11.60 1.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5850.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5850.5 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 PBE1PBE/aug-cc-pCVTZ
ABC
9.46496 1.31240 1.15259

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/aug-cc-pCVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.671
C2 0.000 0.000 -0.525
H3 0.000 0.940 -1.111
H4 0.000 -0.940 -1.111

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19652.01492.0149
C21.19651.10751.1075
H32.01491.10751.8800
H42.01491.10751.8800

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.926 O1 C2 H4 121.926
H3 C2 H4 116.148
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/aug-cc-pCVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.445      
2 C -0.449      
3 H 0.447      
4 H 0.447      


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 -2.364 2.364
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.693 0.000 0.000
y 0.000 -11.574 0.000
z 0.000 0.000 -12.264
Traceless
 xyz
x 0.225 0.000 0.000
y 0.000 0.405 0.000
z 0.000 0.000 -0.630
Polar
3z2-r2-1.260
x2-y2-0.120
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.912 0.000 0.000
y 0.000 2.688 0.000
z 0.000 0.000 3.307


<r2> (average value of r2) Å2
<r2> 16.893
(<r2>)1/2 4.110