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

using model chemistry: QCISD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-302.290774
Energy at 298.15K 
HF Energy-301.480612
Nuclear repulsion energy158.726036
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 QCISD/6-31G**
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 3117 2934 90.20      
2 A1 1929 1816 25.72      
3 A1 1500 1412 0.03      
4 A1 1169 1100 112.56      
5 A1 544 512 0.93      
6 A1 283 266 13.68      
7 A2 1039 978 0.00      
8 A2 161 151 0.00      
9 B1 1047 985 2.07      
10 B1 123 116 3.66      
11 B2 3094 2913 0.06      
12 B2 1854 1745 606.58      
13 B2 1447 1362 15.78      
14 B2 1127 1061 616.34      
15 B2 706 664 38.02      

Unscaled Zero Point Vibrational Energy (zpe) 9569.5 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 9008.7 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 QCISD/6-31G**
ABC
1.60789 0.08563 0.08130

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.390
C2 0.000 1.180 -0.324
C3 0.000 -1.180 -0.324
O4 0.000 2.245 0.225
O5 0.000 -2.245 0.225
H6 0.000 1.037 -1.412
H7 0.000 -1.037 -1.412

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37941.37942.25132.25132.07872.0787
C21.37942.36041.19823.46911.09712.4693
C31.37942.36043.46911.19822.46931.0971
O42.25131.19823.46914.49042.03463.6674
O52.25133.46911.19824.49043.66742.0346
H62.07871.09712.46932.03463.66742.0733
H72.07872.46931.09713.66742.03462.0733

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 121.546 O1 C2 H6 113.661
O1 C3 O5 121.546 C2 O1 C3 117.643
O4 C2 H6 124.793
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability