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

using model chemistry: QCISD(T)/cc-pVTZ

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(T)/cc-pVTZ
 hartrees
Energy at 0K-302.650392
Energy at 298.15K 
HF Energy-301.596124
Nuclear repulsion energy159.295985
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(T)/cc-pVTZ
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 3045 2888        
2 A1 1893 1795        
3 A1 1463 1388        
4 A1 1155 1096        
5 A1 549 521        
6 A1 297 282        
7 A2 1021 969        
8 A2 191 181        
9 B1 1030 977        
10 B1 129 122        
11 B2 3023 2868        
12 B2 1812 1719        
13 B2 1400 1328        
14 B2 1089 1033        
15 B2 713 676        

Unscaled Zero Point Vibrational Energy (zpe) 9404.1 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 8920.7 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(T)/cc-pVTZ
ABC
1.61933 0.08634 0.08197

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.404
C2 0.000 1.172 -0.320
C3 0.000 -1.172 -0.320
O4 0.000 2.238 0.214
O5 0.000 -2.238 0.214
H6 0.000 1.013 -1.407
H7 0.000 -1.013 -1.407

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37751.37752.24592.24592.07442.0744
C21.37752.34451.19193.45171.09842.4406
C31.37752.34453.45171.19192.44061.0984
O42.24591.19193.45174.47572.03163.6325
O52.24593.45171.19194.47573.63252.0316
H62.07441.09842.44062.03163.63252.0259
H72.07442.44061.09843.63252.03162.0259

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 121.705 O1 C2 H6 113.343
O1 C3 O5 121.705 C2 O1 C3 116.637
O4 C2 H6 124.952
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability