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All results from a given calculation for CHOOCHO (diformyl ether)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-300.334198
Energy at 298.15K 
HF Energy-299.773447
Nuclear repulsion energy155.145259
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 MP2/3-21G*
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 3047 2899 113.37 107.70 0.27 0.42
2 A1 1773 1686 9.68 6.13 0.12 0.21
3 A1 1517 1443 1.33 5.54 0.38 0.55
4 A1 1060 1009 97.57 7.79 0.21 0.34
5 A1 522 497 0.95 12.95 0.37 0.54
6 A1 263 251 8.27 0.61 0.59 0.74
7 A2 1066 1014 0.00 1.49 0.75 0.86
8 A2 175 167 0.00 0.47 0.75 0.86
9 B1 1060 1009 0.33 3.82 0.75 0.86
10 B1 117 111 2.02 0.10 0.75 0.86
11 B2 3028 2881 2.55 1.79 0.75 0.86
12 B2 1678 1596 416.30 0.66 0.75 0.86
13 B2 1473 1401 4.80 18.81 0.75 0.86
14 B2 1020 970 624.71 2.03 0.75 0.86
15 B2 697 663 37.02 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9247.5 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 8797.2 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 MP2/3-21G*
ABC
1.57375 0.08136 0.07736

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.415
C2 0.000 1.209 -0.328
C3 0.000 -1.209 -0.328
O4 0.000 2.305 0.214
O5 0.000 -2.305 0.214
H6 0.000 1.029 -1.411
H7 0.000 -1.029 -1.411

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.41901.41902.31382.31382.09612.0961
C21.41902.41811.22283.55571.09812.4866
C31.41902.41813.55571.22282.48661.0981
O42.31381.22283.55574.61022.06633.7093
O52.31383.55571.22284.61023.70932.0663
H62.09611.09812.48662.06633.70932.0583
H72.09612.48661.09813.70932.06632.0583

picture of diformyl ether state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 O4 122.116 O1 C2 H6 112.136
O1 C3 O5 122.116 C2 O1 C3 116.868
O4 C2 H6 125.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability