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Experimental data for CHOOCHO (diformyl ether)

22 02 02 11 45
Other names
Formic acid anhydride; Formic anhydride; formyl ether;
INChI INChIKey SMILES IUPAC name
InChI=1S/C2H2O3/c3-1-5-2-4/h1-2H O=COC=O
State Conformation
1A1 C2V
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
1 A' 2987   webbook      
2 A' 2967          
3 A' 1822          
4 A' 1767          
5 A' 1381          
6 A' 1359          
7 A' 1105          
8 A' 998          
9 A' 776          
10 A' 540          
11 A' 260          
12 A" 1067          
14 A" 227          

Calculated vibrational frequencies for CHOOCHO (diformyl ether).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment

Calculated rotational constants for CHOOCHO (diformyl ether).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of diformyl ether

Point Group Cs


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for CHOOCHO (diformyl ether).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
C-O 2
C=O 2
H-C 2

Connectivity
Atom 1 Atom 2
O1 C2
O1 C3
C2 O4
C2 H6
C3 O5
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A1
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1A1 C2v           C2v 1 2
1 2 1A' Cs True           Cs 2 3
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for CHOOCHO (diformyl ether).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1A1 C2v       C2v 1 2
1 2 1A' Cs True       Cs 2 3

Calculated electric quadrupole moments for CHOOCHO (diformyl ether).

References
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squib reference DOI
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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