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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-114.486491
Energy at 298.15K-114.487938
HF Energy-114.486491
Nuclear repulsion energy31.476302
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 B1B95/6-311G**
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 2904 2788 63.03 174.23 0.17 0.29
2 A1 1864 1789 114.20 5.12 0.56 0.72
3 A1 1544 1483 6.97 12.58 0.63 0.77
4 B1 1208 1160 2.61 1.36 0.75 0.86
5 B2 2962 2844 159.12 93.43 0.75 0.86
6 B2 1276 1225 15.01 4.61 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5878.9 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 5644.4 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 B1B95/6-311G**
ABC
9.51849 1.31382 1.15447

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

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 -0.524
H3 0.000 0.937 -1.113
H4 0.000 -0.937 -1.113

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19502.01522.0152
C21.19501.10701.1070
H32.01521.10701.8747
H42.01521.10701.8747

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.142 O1 C2 H4 122.142
H3 C2 H4 115.716
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.256      
2 C 0.092      
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 -2.248 2.248
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.457 0.000 0.000
y 0.000 -11.457 0.000
z 0.000 0.000 -11.958
Traceless
 xyz
x 0.250 0.000 0.000
y 0.000 0.250 0.000
z 0.000 0.000 -0.501
Polar
3z2-r2-1.001
x2-y2-0.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.163 0.000 0.000
y 0.000 2.106 0.000
z 0.000 0.000 2.803


<r2> (average value of r2) Å2
<r2> 16.744
(<r2>)1/2 4.092