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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-302.807102
Energy at 298.15K 
HF Energy-302.807102
Nuclear repulsion energy157.622015
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 PBEPBEultrafine/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 2932 2914 80.53 138.60 0.26 0.41
2 A1 1834 1823 23.83 50.76 0.17 0.29
3 A1 1355 1347 0.54 3.77 0.45 0.62
4 A1 1086 1079 88.67 2.44 0.09 0.16
5 A1 510 507 0.17 12.02 0.22 0.36
6 A1 264 262 12.96 0.82 0.20 0.33
7 A2 964 958 0.00 0.20 0.75 0.86
8 A2 188 187 0.00 0.43 0.75 0.86
9 B1 969 963 0.52 2.10 0.75 0.86
10 B1 130 129 4.91 0.09 0.75 0.86
11 B2 2916 2898 2.40 0.45 0.75 0.86
12 B2 1757 1746 638.56 2.62 0.75 0.86
13 B2 1309 1301 4.21 3.82 0.75 0.86
14 B2 986 980 624.36 3.55 0.75 0.86
15 B2 675 671 40.66 0.24 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8937.4 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 8882.9 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
1.56868 0.08465 0.08032

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.401
C2 0.000 1.189 -0.326
C3 0.000 -1.189 -0.326
O4 0.000 2.258 0.223
O5 0.000 -2.258 0.223
H6 0.000 1.030 -1.431
H7 0.000 -1.030 -1.431

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.39351.39352.26492.26492.10192.1019
C21.39352.37731.20243.49021.11632.4784
C31.39352.37733.49021.20242.47841.1163
O42.26491.20243.49024.51602.06083.6808
O52.26493.49021.20244.51603.68082.0608
H62.10191.11632.47842.06083.68082.0596
H72.10192.47841.11633.68082.06082.0596

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 121.324 O1 C2 H6 113.283
O1 C3 O5 121.324 C2 O1 C3 117.076
O4 C2 H6 125.394
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.431      
2 C 0.851      
3 C 0.851      
4 O -0.394      
5 O -0.394      
6 H -0.241      
7 H -0.241      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.177 3.177
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.830 0.000 0.000
y 0.000 -39.143 0.000
z 0.000 0.000 -26.461
Traceless
 xyz
x 5.972 0.000 0.000
y 0.000 -12.497 0.000
z 0.000 0.000 6.525
Polar
3z2-r213.050
x2-y212.313
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.544 0.000 0.000
y 0.000 8.756 0.000
z 0.000 0.000 5.253


<r2> (average value of r2) Å2
<r2> 127.356
(<r2>)1/2 11.285