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

using model chemistry: CCSD/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-302.383472
Energy at 298.15K 
HF Energy-301.524239
Nuclear repulsion energy158.538618
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/aug-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 3080 2967 61.28      
2 A1 1894 1825 24.07      
3 A1 1446 1393 0.01      
4 A1 1153 1111 98.37      
5 A1 540 520 0.49      
6 A1 284 274 14.74      
7 A2 1019 982 0.00      
8 A2 172 166 0.00      
9 B1 1026 989 0.00      
10 B1 125 120 4.97      
11 B2 3058 2946 1.10      
12 B2 1816 1750 690.97      
13 B2 1391 1340 14.44      
14 B2 1090 1050 678.16      
15 B2 703 677 45.36      

Unscaled Zero Point Vibrational Energy (zpe) 9398.0 cm-1
Scaled (by 0.9634) Zero Point Vibrational Energy (zpe) 9054.0 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/aug-cc-pVDZ
ABC
1.59162 0.08562 0.08125

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.400
C2 0.000 1.179 -0.324
C3 0.000 -1.179 -0.324
O4 0.000 2.246 0.221
O5 0.000 -2.246 0.221
H6 0.000 1.031 -1.422
H7 0.000 -1.031 -1.422

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.38351.38352.25292.25292.09292.0929
C21.38352.35891.19733.46831.10792.4684
C31.38352.35893.46831.19732.46841.1079
O42.25291.19733.46834.49172.04263.6656
O52.25293.46831.19734.49173.66562.0426
H62.09291.10792.46842.04263.66562.0627
H72.09292.46841.10793.66562.04262.0627

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 121.443 O1 C2 H6 113.830
O1 C3 O5 121.443 C2 O1 C3 116.971
O4 C2 H6 124.727
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability