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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B3LYP/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 B3LYP/6-31+G**
 hartrees
Energy at 0K-114.511525
Energy at 298.15K-114.512968
HF Energy-114.511525
Nuclear repulsion energy31.187185
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 B3LYP/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 2914 2810 63.62 159.64 0.17 0.29
2 A1 1819 1754 115.82 9.04 0.29 0.45
3 A1 1537 1482 7.51 13.14 0.57 0.73
4 B1 1194 1151 4.69 1.20 0.75 0.86
5 B2 2979 2873 126.48 108.92 0.75 0.86
6 B2 1262 1217 9.89 3.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5853.0 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 5643.5 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 B3LYP/6-31+G**
ABC
9.44197 1.28731 1.13286

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.678
C2 0.000 0.000 -0.532
H3 0.000 0.941 -1.117
H4 0.000 -0.941 -1.117

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20962.02682.0268
C21.20961.10841.1084
H32.02681.10841.8823
H42.02681.10841.8823

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.882 O1 C2 H4 121.882
H3 C2 H4 116.237
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.319      
2 C 0.092      
3 H 0.114      
4 H 0.114      


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 -2.516 2.516
CHELPG        
AIM        
ESP 0.000 0.000 -2.504 2.504


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.778 0.000 0.000
y 0.000 -11.743 0.000
z 0.000 0.000 -12.427
Traceless
 xyz
x 0.307 0.000 0.000
y 0.000 0.360 0.000
z 0.000 0.000 -0.667
Polar
3z2-r2-1.333
x2-y2-0.036
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.347 0.000 0.000
y 0.000 2.308 0.000
z 0.000 0.000 3.178


<r2> (average value of r2) Å2
<r2> 17.124
(<r2>)1/2 4.138