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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: BLYP/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-114.484940
Energy at 298.15K-114.486373
HF Energy-114.484940
Nuclear repulsion energy30.880802
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/6-31+G**
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 2812 2797 72.73 171.88 0.17 0.29
2 A1 1739 1730 106.19 7.93 0.31 0.47
3 A1 1494 1486 7.48 13.93 0.58 0.73
4 B1 1147 1141 5.28 1.54 0.75 0.86
5 B2 2865 2850 152.45 132.31 0.75 0.86
6 B2 1224 1217 7.61 3.87 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5640.5 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 5610.6 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 BLYP/6-31+G**
ABC
9.29829 1.26100 1.11041

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.685
C2 0.000 0.000 -0.537
H3 0.000 0.948 -1.129
H4 0.000 -0.948 -1.129

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.22212.04672.0467
C21.22211.11781.1178
H32.04671.11781.8968
H42.04671.11781.8968

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.957 O1 C2 H4 121.957
H3 C2 H4 116.087
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.296      
2 C 0.072      
3 H 0.112      
4 H 0.112      


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 -2.402 2.402
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.882 0.000 0.000
y 0.000 -11.916 0.000
z 0.000 0.000 -12.582
Traceless
 xyz
x 0.367 0.000 0.000
y 0.000 0.316 0.000
z 0.000 0.000 -0.683
Polar
3z2-r2-1.365
x2-y20.034
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.402 0.000 0.000
y 0.000 2.448 0.000
z 0.000 0.000 3.324


<r2> (average value of r2) Å2
<r2> 17.406
(<r2>)1/2 4.172