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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: B1B95/daug-cc-pVDZ

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/daug-cc-pVDZ
 hartrees
Energy at 0K-114.473237
Energy at 298.15K-114.474681
HF Energy-114.473237
Nuclear repulsion energy31.334099
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/daug-cc-pVDZ
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 2918 2918 72.22 185.96 0.11 0.19
2 A1 1843 1843 113.99 7.14 0.30 0.47
3 A1 1518 1518 9.94 8.40 0.39 0.56
4 B1 1202 1202 5.98 0.35 0.75 0.86
5 B2 2994 2994 113.57 101.72 0.75 0.86
6 B2 1252 1252 11.76 1.07 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5863.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5863.4 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/daug-cc-pVDZ
ABC
9.39624 1.30317 1.14444

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/daug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.674
C2 0.000 0.000 -0.527
H3 0.000 0.943 -1.113
H4 0.000 -0.943 -1.113

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20122.02082.0208
C21.20121.11051.1105
H32.02081.11051.8869
H42.02081.11051.8869

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.839 O1 C2 H4 121.839
H3 C2 H4 116.322
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.355      
2 C 1.137      
3 H -0.391      
4 H -0.391      


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 -2.372 2.372
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.670 0.000 0.000
y 0.000 -11.605 0.000
z 0.000 0.000 -12.288
Traceless
 xyz
x 0.277 0.000 0.000
y 0.000 0.373 0.000
z 0.000 0.000 -0.650
Polar
3z2-r2-1.300
x2-y2-0.064
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.922 0.000 0.000
y 0.000 2.720 0.000
z 0.000 0.000 3.336


<r2> (average value of r2) Å2
<r2> 16.964
(<r2>)1/2 4.119