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All results from a given calculation for CH2CO (Ketene)

using model chemistry: CCSD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD/TZVP
 hartrees
Energy at 0K-152.253461
Energy at 298.15K-152.254497
HF Energy-151.778566
Nuclear repulsion energy58.590028
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 CCSD/TZVP
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 3236 3089 22.92      
2 A1 2239 2137 660.82      
3 A1 1451 1385 13.98      
4 A1 1181 1127 5.52      
5 B1 579 553 42.92      
6 B1 492 470 98.02      
7 B2 3343 3190 5.31      
8 B2 1012 966 5.02      
9 B2 445 424 4.06      

Unscaled Zero Point Vibrational Energy (zpe) 6988.6 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 6669.9 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 CCSD/TZVP
ABC
9.47280 0.34357 0.33154

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.210
C2 0.000 0.000 0.103
O3 0.000 0.000 1.264
H4 0.000 0.940 -1.737
H5 0.000 -0.940 -1.737

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5
C11.31342.47451.07701.0770
C21.31341.16112.06582.0658
O32.47451.16113.14453.1445
H41.07702.06583.14451.8792
H51.07702.06583.14451.8792

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 119.257
C2 C1 H5 119.257 H4 C1 H5 121.487
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability