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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B3LYP/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-114.559669
Energy at 298.15K-114.561115
HF Energy-114.559669
Nuclear repulsion energy31.427011
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/cc-pVQZ
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 2879 2789 71.00 184.97 0.13 0.23
2 A1 1820 1764 110.62 6.24 0.50 0.67
3 A1 1535 1487 10.92 10.33 0.48 0.65
4 B1 1203 1166 3.71 0.65 0.75 0.86
5 B2 2933 2842 129.55 102.15 0.75 0.86
6 B2 1269 1229 12.36 2.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5819.5 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 5638.0 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/cc-pVQZ
ABC
9.51968 1.30893 1.15071

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

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 -0.526
H3 0.000 0.937 -1.113
H4 0.000 -0.937 -1.113

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.19802.01612.0161
C21.19801.10591.1059
H32.01611.10591.8746
H42.01611.10591.8746

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 122.056 O1 C2 H4 122.056
H3 C2 H4 115.887
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.313      
2 C 0.288      
3 H 0.012      
4 H 0.012      


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 -2.337 2.337
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.689 0.000 0.000
y 0.000 -11.668 0.000
z 0.000 0.000 -12.309
Traceless
 xyz
x 0.299 0.000 0.000
y 0.000 0.331 0.000
z 0.000 0.000 -0.630
Polar
3z2-r2-1.260
x2-y2-0.021
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.678 0.000 0.000
y 0.000 2.536 0.000
z 0.000 0.000 3.181


<r2> (average value of r2) Å2
<r2> 16.932
(<r2>)1/2 4.115