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All results from a given calculation for CH2CO (Ketene)

using model chemistry: MP2=FULL/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=FULL/STO-3G
 hartrees
Energy at 0K-149.918654
Energy at 298.15K-149.919477
HF Energy-149.720270
Nuclear repulsion energy56.667201
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=FULL/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3480 3093 56.13 38.06 0.12 0.22
2 A1 2306 2050 79.76 0.30 0.16 0.28
3 A1 1575 1400 6.60 10.19 0.75 0.85
4 A1 1169 1039 0.35 14.93 0.33 0.50
5 B1 645 573 43.56 0.01 0.75 0.86
6 B1 421 374 33.11 1.11 0.75 0.86
7 B2 3641 3236 6.86 37.24 0.75 0.86
8 B2 1092 970 2.01 0.34 0.75 0.86
9 B2 396 352 1.33 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7361.3 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 6543.5 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 MP2=FULL/STO-3G
ABC
9.34937 0.32113 0.31047

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/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
C11.33652.55961.09151.0915
C21.33651.22312.10562.1056
O32.55961.22313.24533.2453
H41.09152.10563.24531.8916
H51.09152.10563.24531.8916

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 119.943
C2 C1 H5 119.943 H4 C1 H5 120.114
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability