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All results from a given calculation for H2CO (Formaldehyde)

using model chemistry: HSEh1PBE/aug-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 HSEh1PBE/aug-cc-pVDZ
 hartrees
Energy at 0K-114.397706
Energy at 298.15K-114.399150
HF Energy-114.397706
Nuclear repulsion energy31.274081
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 HSEh1PBE/aug-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 2912 2802 71.65 182.71 0.11 0.19
2 A1 1836 1767 111.22 9.26 0.31 0.47
3 A1 1515 1458 11.72 8.00 0.42 0.59
4 B1 1201 1155 6.25 0.20 0.75 0.86
5 B2 2983 2870 113.70 103.93 0.75 0.86
6 B2 1248 1201 11.23 1.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5847.7 cm-1
Scaled (by 0.9622) Zero Point Vibrational Energy (zpe) 5626.7 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 HSEh1PBE/aug-cc-pVDZ
ABC
9.34639 1.29853 1.14013

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.675
C2 0.000 0.000 -0.528
H3 0.000 0.946 -1.116
H4 0.000 -0.946 -1.116

Atom - Atom Distances (Å)
  O1 C2 H3 H4
O11.20302.02572.0257
C21.20301.11401.1140
H32.02571.11401.8919
H42.02571.11401.8919

picture of Formaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 121.877 O1 C2 H4 121.877
H3 C2 H4 116.246
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.378      
2 C 0.689      
3 H -0.155      
4 H -0.155      


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 -2.388 2.388
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.705 0.000 0.000
y 0.000 -11.625 0.000
z 0.000 0.000 -12.353
Traceless
 xyz
x 0.284 0.000 0.000
y 0.000 0.403 0.000
z 0.000 0.000 -0.687
Polar
3z2-r2-1.374
x2-y2-0.080
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.856 0.000 0.000
y 0.000 2.654 0.000
z 0.000 0.000 3.335


<r2> (average value of r2) Å2
<r2> 17.029
(<r2>)1/2 4.127