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

using model chemistry: QCISD/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 QCISD/cc-pVDZ
 hartrees
Energy at 0K-302.325430
Energy at 298.15K 
HF Energy-301.502971
Nuclear repulsion energy158.869750
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/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 3063 2939 96.19      
2 A1 1930 1851 27.16      
3 A1 1460 1401 0.25      
4 A1 1174 1126 115.33      
5 A1 546 523 0.71      
6 A1 287 275 12.87      
7 A2 1035 993 0.00      
8 A2 175 168 0.00      
9 B1 1040 997 1.57      
10 B1 123 118 3.98      
11 B2 3037 2914 0.02      
12 B2 1853 1777 647.15      
13 B2 1412 1354 18.10      
14 B2 1115 1070 604.99      
15 B2 711 682 37.79      

Unscaled Zero Point Vibrational Energy (zpe) 9479.8 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 9094.9 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/cc-pVDZ
ABC
1.60543 0.08596 0.08159

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.403
C2 0.000 1.175 -0.320
C3 0.000 -1.175 -0.320
O4 0.000 2.243 0.216
O5 0.000 -2.243 0.216
H6 0.000 1.012 -1.421
H7 0.000 -1.012 -1.421

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37931.37932.25072.25072.08582.0858
C21.37932.34941.19473.45921.11292.4482
C31.37932.34943.45921.19472.44821.1129
O42.25071.19473.45924.48582.04743.6430
O52.25073.45921.19474.48583.64302.0474
H62.08581.11292.44822.04743.64302.0240
H72.08582.44821.11293.64302.04742.0240

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 121.780 O1 C2 H6 113.202
O1 C3 O5 121.780 C2 O1 C3 116.786
O4 C2 H6 125.018
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability