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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: BLYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-114.481572
Energy at 298.15K-114.483008
HF Energy-114.481572
Nuclear repulsion energy31.051515
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 BLYP/6-31G(2df,p)
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 2781 2765 64.56 148.99 0.16 0.28
2 A1 1773 1764 85.19 2.95 0.31 0.47
3 A1 1506 1497 7.04 14.43 0.63 0.77
4 B1 1158 1151 1.55 2.18 0.75 0.86
5 B2 2812 2796 173.92 82.13 0.75 0.86
6 B2 1236 1230 11.42 6.80 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5632.7 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 5601.7 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 BLYP/6-31G(2df,p)
ABC
9.39492 1.27478 1.12248

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.681
C2 0.000 0.000 -0.530
H3 0.000 0.944 -1.135
H4 0.000 -0.944 -1.135

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.21152.04642.0464
C21.21151.12051.1205
H32.04641.12051.8870
H42.04641.12051.8870

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.644 O1 C2 H4 122.644
H3 C2 H4 114.713
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.132      
2 C -0.035      
3 H 0.083      
4 H 0.083      


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 -1.955 1.955
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.408 0.000 0.000
y 0.000 -11.546 0.000
z 0.000 0.000 -12.004
Traceless
 xyz
x 0.367 0.000 0.000
y 0.000 0.160 0.000
z 0.000 0.000 -0.527
Polar
3z2-r2-1.054
x2-y20.139
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.294 0.000 0.000
y 0.000 2.368 0.000
z 0.000 0.000 2.829


<r2> (average value of r2) Å2
<r2> 17.033
(<r2>)1/2 4.127