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All results from a given calculation for CH2CO (Ketene)

using model chemistry: MP2/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/STO-3G
 hartrees
Energy at 0K-149.917733
Energy at 298.15K-149.918555
HF Energy-149.720237
Nuclear repulsion energy56.662432
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 MP2/STO-3G
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 3479 3033 56.14 38.07 0.12 0.22
2 A1 2306 2010 79.73 0.30 0.16 0.28
3 A1 1575 1373 6.61 10.20 0.75 0.85
4 A1 1169 1019 0.35 14.93 0.33 0.50
5 B1 645 562 43.60 0.01 0.75 0.86
6 B1 420 367 33.09 1.11 0.75 0.86
7 B2 3640 3174 6.85 37.25 0.75 0.86
8 B2 1092 952 2.01 0.34 0.75 0.86
9 B2 396 345 1.33 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7360.2 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 6417.4 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 MP2/STO-3G
ABC
9.34791 0.32107 0.31041

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.246
C2 0.000 0.000 0.091
O3 0.000 0.000 1.314
H4 0.000 0.946 -1.791
H5 0.000 -0.946 -1.791

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.33662.55981.09161.0916
C21.33661.22322.10582.1058
O32.55981.22323.24553.2455
H41.09162.10583.24551.8917
H51.09162.10583.24551.8917

picture of Ketene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 180.000 C2 C1 H4 119.941
C2 C1 H5 119.941 H4 C1 H5 120.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability