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: PBEPBE/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/daug-cc-pVTZ
 hartrees
Energy at 0K-302.880922
Energy at 298.15K 
HF Energy-302.880922
Nuclear repulsion energy158.262876
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 PBEPBE/daug-cc-pVTZ
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 2915 2915 81.11 137.42 0.26 0.41
2 A1 1842 1842 24.51 53.25 0.15 0.27
3 A1 1376 1376 0.40 3.64 0.47 0.64
4 A1 1088 1088 90.13 2.13 0.08 0.15
5 A1 515 515 0.17 11.68 0.21 0.35
6 A1 266 266 12.53 0.73 0.18 0.30
7 A2 966 966 0.00 0.18 0.75 0.86
8 A2 179 179 0.00 0.35 0.75 0.86
9 B1 976 976 0.37 2.06 0.75 0.86
10 B1 129 129 4.96 0.07 0.75 0.86
11 B2 2896 2896 2.66 0.30 0.75 0.86
12 B2 1764 1764 642.88 2.09 0.75 0.86
13 B2 1323 1323 4.39 3.86 0.75 0.86
14 B2 989 989 635.40 3.14 0.75 0.86
15 B2 683 683 42.27 0.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8953.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8953.5 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 PBEPBE/daug-cc-pVTZ
ABC
1.59098 0.08518 0.08085

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.399
C2 0.000 1.186 -0.324
C3 0.000 -1.186 -0.324
O4 0.000 2.250 0.221
O5 0.000 -2.250 0.221
H6 0.000 1.027 -1.422
H7 0.000 -1.027 -1.422

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.38911.38912.25742.25742.09112.0911
C21.38912.37251.19553.47961.11012.4712
C31.38912.37253.47961.19552.47121.1101
O42.25741.19553.47964.50082.04873.6666
O52.25743.47961.19554.50083.66662.0487
H62.09111.11012.47122.04873.66662.0545
H72.09112.47121.11013.66662.04872.0545

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 121.537 O1 C2 H6 113.116
O1 C3 O5 121.537 C2 O1 C3 117.298
O4 C2 H6 125.347
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.253      
2 C 0.262      
3 C 0.262      
4 O -1.040      
5 O -1.040      
6 H 0.905      
7 H 0.905      


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 -3.126 3.126
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.769 0.000 0.000
y 0.000 -38.963 0.000
z 0.000 0.000 -26.386
Traceless
 xyz
x 5.906 0.000 0.000
y 0.000 -12.386 0.000
z 0.000 0.000 6.480
Polar
3z2-r212.960
x2-y212.194
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.683 0.000 0.000
y 0.000 8.669 0.000
z 0.000 0.000 5.297


<r2> (average value of r2) Å2
<r2> 126.565
(<r2>)1/2 11.250