return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: QCISD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-302.408881
Energy at 298.15K 
HF Energy-301.554789
Nuclear repulsion energy159.441222
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/6-311G*
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 3058 2928 91.93      
2 A1 1924 1842 27.03      
3 A1 1481 1418 0.12      
4 A1 1168 1119 116.21      
5 A1 546 523 0.64      
6 A1 288 276 13.81      
7 A2 1031 987 0.00      
8 A2 160 153 0.00      
9 B1 1037 992 0.85      
10 B1 120 115 3.85      
11 B2 3032 2903 0.02      
12 B2 1850 1771 649.49      
13 B2 1422 1362 16.05      
14 B2 1117 1070 641.14      
15 B2 715 684 45.88      

Unscaled Zero Point Vibrational Energy (zpe) 9473.9 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 9070.3 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/6-311G*
ABC
1.62169 0.08640 0.08203

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.392
C2 0.000 1.176 -0.320
C3 0.000 -1.176 -0.320
O4 0.000 2.235 0.221
O5 0.000 -2.235 0.221
H6 0.000 1.035 -1.414
H7 0.000 -1.035 -1.414

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37481.37482.24142.24142.08152.0815
C21.37482.35201.18883.45341.10282.4670
C31.37482.35203.45341.18882.46701.1028
O42.24141.18883.45344.46962.02733.6557
O52.24143.45341.18884.46963.65572.0273
H62.08151.10282.46702.02733.65572.0705
H72.08152.46701.10283.65572.02732.0705

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 121.760 O1 C2 H6 113.860
O1 C3 O5 121.760 C2 O1 C3 117.612
O4 C2 H6 124.379
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability