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

using model chemistry: QCISD(T)/Def2TZVPP

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)/Def2TZVPP
 hartrees
Energy at 0K-302.660333
Energy at 298.15K 
HF Energy-301.609990
Nuclear repulsion energy159.308747
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)/Def2TZVPP
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 3046 3046        
2 A1 1881 1881        
3 A1 1454 1454        
4 A1 1149 1149        
5 A1 531 531        
6 A1 272 272        
7 A2 1013 1013        
8 A2 176 176        
9 B1 1022 1022        
10 B1 124 124        
11 B2 3025 3025        
12 B2 1803 1803        
13 B2 1394 1394        
14 B2 1080 1080        
15 B2 709 709        

Unscaled Zero Point Vibrational Energy (zpe) 9338.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9338.8 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)/Def2TZVPP
ABC
1.61652 0.08637 0.08199

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.403
C2 0.000 1.173 -0.321
C3 0.000 -1.173 -0.321
O4 0.000 2.237 0.215
O5 0.000 -2.237 0.215
H6 0.000 1.015 -1.407
H7 0.000 -1.015 -1.407

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37811.37812.24492.24492.07522.0752
C21.37812.34591.19133.45181.09822.4428
C31.37812.34593.45181.19132.44281.0982
O42.24491.19133.45184.47402.03133.6340
O52.24493.45181.19134.47403.63402.0313
H62.07521.09822.44282.03133.63402.0295
H72.07522.44281.09823.63402.03132.0295

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 121.616 O1 C2 H6 113.383
O1 C3 O5 121.616 C2 O1 C3 116.672
O4 C2 H6 125.001
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability