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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B2PLYP/aug-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 B2PLYP/aug-cc-pVTZ
 hartrees
Energy at 0K-114.468075
Energy at 298.15K-114.469520
HF Energy-114.335748
Nuclear repulsion energy31.309813
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 B2PLYP/aug-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 2930 2815 71.69 182.80 0.10 0.18
2 A1 1782 1713 93.35 7.92 0.23 0.37
3 A1 1538 1478 12.81 10.35 0.36 0.52
4 B1 1201 1154 6.08 0.22 0.75 0.86
5 B2 2991 2875 106.08 103.24 0.75 0.86
6 B2 1267 1218 10.59 1.08 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5855.0 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 5626.6 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 B2PLYP/aug-cc-pVTZ
ABC
9.54497 1.29668 1.14160

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.676
C2 0.000 0.000 -0.530
H3 0.000 0.936 -1.112
H4 0.000 -0.936 -1.112

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20552.01782.0178
C21.20551.10221.1022
H32.01781.10221.8721
H42.01781.10221.8721

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.869 O1 C2 H4 121.869
H3 C2 H4 116.261
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.413      
2 C -0.382      
3 H 0.398      
4 H 0.398      


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 -2.406 2.406
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.784 0.000 0.000
y 0.000 -11.714 0.000
z 0.000 0.000 -12.376
Traceless
 xyz
x 0.261 0.000 0.000
y 0.000 0.366 0.000
z 0.000 0.000 -0.627
Polar
3z2-r2-1.254
x2-y2-0.070
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.928 0.000 0.000
y 0.000 2.677 0.000
z 0.000 0.000 3.349


<r2> (average value of r2) Å2
<r2> 17.028
(<r2>)1/2 4.127