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

using model chemistry: CCSD/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-302.321322
Energy at 298.15K 
HF Energy-301.503650
Nuclear repulsion energy159.099277
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/cc-pVDZ
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 3070 2908 91.36      
2 A1 1947 1844 26.85      
3 A1 1467 1390 0.47      
4 A1 1184 1121 117.09      
5 A1 550 521 0.83      
6 A1 288 273 12.99      
7 A2 1040 985 0.00      
8 A2 175 166 0.00      
9 B1 1044 989 1.45      
10 B1 123 117 3.95      
11 B2 3045 2884 0.00      
12 B2 1870 1771 650.94      
13 B2 1418 1343 20.55      
14 B2 1131 1071 608.93      
15 B2 715 678 37.91      

Unscaled Zero Point Vibrational Energy (zpe) 9532.8 cm-1
Scaled (by 0.9473) Zero Point Vibrational Energy (zpe) 9030.4 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/cc-pVDZ
ABC
1.60987 0.08621 0.08182

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.402
C2 0.000 1.173 -0.319
C3 0.000 -1.173 -0.319
O4 0.000 2.240 0.216
O5 0.000 -2.240 0.216
H6 0.000 1.013 -1.420
H7 0.000 -1.013 -1.420

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37691.37692.24722.24722.08432.0843
C21.37692.34661.19303.45451.11242.4481
C31.37692.34663.45451.19302.44811.1124
O42.24721.19303.45454.47902.04453.6410
O52.24723.45451.19304.47903.64102.0445
H62.08431.11242.44812.04453.64102.0266
H72.08432.44811.11243.64102.04452.0266

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 121.795 O1 C2 H6 113.288
O1 C3 O5 121.795 C2 O1 C3 116.887
O4 C2 H6 124.917
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability