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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-114.500024
Energy at 298.15K-114.501472
HF Energy-114.500024
Nuclear repulsion energy31.444318
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 mPW1PW91/6-311G**
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 2905 2779 63.45 171.22 0.17 0.29
2 A1 1861 1781 114.45 5.24 0.55 0.71
3 A1 1545 1478 7.63 12.49 0.63 0.77
4 B1 1212 1160 2.63 1.27 0.75 0.86
5 B2 2960 2832 157.83 92.44 0.75 0.86
6 B2 1277 1221 14.65 4.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5879.7 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 5625.1 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 mPW1PW91/6-311G**
ABC
9.50292 1.31101 1.15207

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.672
C2 0.000 0.000 -0.524
H3 0.000 0.938 -1.115
H4 0.000 -0.938 -1.115

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19602.01792.0179
C21.19601.10861.1086
H32.01791.10861.8763
H42.01791.10861.8763

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.194 O1 C2 H4 122.194
H3 C2 H4 115.612
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.262      
2 C 0.097      
3 H 0.082      
4 H 0.082      


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 -2.270 2.270
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.461 0.000 0.000
y 0.000 -11.452 0.000
z 0.000 0.000 -11.960
Traceless
 xyz
x 0.245 0.000 0.000
y 0.000 0.259 0.000
z 0.000 0.000 -0.504
Polar
3z2-r2-1.008
x2-y2-0.009
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.166 0.000 0.000
y 0.000 2.099 0.000
z 0.000 0.000 2.813


<r2> (average value of r2) Å2
<r2> 16.765
(<r2>)1/2 4.095