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

using model chemistry: CCSD(T)/6-31+G**

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(T)/6-31+G**
 hartrees
Energy at 0K-302.333843
Energy at 298.15K 
HF Energy-301.487281
Nuclear repulsion energy158.125620
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(T)/6-31+G**
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 3103 2978        
2 A1 1878 1802        
3 A1 1472 1412        
4 A1 1139 1093        
5 A1 532 511        
6 A1 278 266        
7 A2 1006 965        
8 A2 152 146        
9 B1 1014 973        
10 B1 119 115        
11 B2 3082 2957        
12 B2 1802 1729        
13 B2 1418 1361        
14 B2 1089 1045        
15 B2 693 665        

Unscaled Zero Point Vibrational Energy (zpe) 9387.5 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 9008.3 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 CCSD(T)/6-31+G**
ABC
1.59306 0.08504 0.08073

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.394
C2 0.000 1.184 -0.326
C3 0.000 -1.184 -0.326
O4 0.000 2.253 0.224
O5 0.000 -2.253 0.224
H6 0.000 1.041 -1.415
H7 0.000 -1.041 -1.415

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.38571.38572.25982.25982.08712.0871
C21.38572.36701.20323.48071.09792.4761
C31.38572.36703.48071.20322.47611.0979
O42.25981.20323.48074.50682.03913.6792
O52.25983.48071.20324.50683.67922.0391
H62.08711.09792.47612.03913.67922.0810
H72.08712.47611.09793.67922.03912.0810

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 121.427 O1 C2 H6 113.855
O1 C3 O5 121.427 C2 O1 C3 117.322
O4 C2 H6 124.718
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability