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

using model chemistry: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-299.783092
Energy at 298.15K 
HF Energy-299.783092
Nuclear repulsion energy159.555635
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 HF/3-21G*
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 3258 2941 83.31 92.40 0.28 0.43
2 A1 2042 1843 40.82 27.18 0.16 0.28
3 A1 1623 1465 1.44 1.37 0.43 0.61
4 A1 1198 1081 153.22 6.73 0.24 0.39
5 A1 577 520 3.28 6.28 0.41 0.58
6 A1 267 241 13.87 0.98 0.68 0.81
7 A2 1186 1070 0.00 6.47 0.75 0.86
8 A2 162 146 0.00 1.13 0.75 0.86
9 B1 1191 1075 8.75 2.09 0.75 0.86
10 B1 129 116 1.22 0.10 0.75 0.86
11 B2 3237 2922 2.82 5.77 0.75 0.86
12 B2 1953 1763 699.43 4.57 0.75 0.86
13 B2 1581 1427 4.63 14.88 0.75 0.86
14 B2 1248 1127 628.09 0.68 0.75 0.86
15 B2 760 686 59.35 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10205.9 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 9211.9 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 HF/3-21G*
ABC
1.66375 0.08558 0.08139

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.343
C2 0.000 1.197 -0.323
C3 0.000 -1.197 -0.323
O4 0.000 2.238 0.245
O5 0.000 -2.238 0.245
H6 0.000 1.082 -1.397
H7 0.000 -1.082 -1.397

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.36971.36972.24032.24032.04872.0487
C21.36972.39381.18603.48161.08012.5191
C31.36972.39383.48161.18602.51911.0801
O42.24031.18603.48164.47632.00803.7037
O52.24033.48161.18604.47633.70372.0080
H62.04871.08012.51912.00803.70372.1636
H72.04872.51911.08013.70372.00802.1636

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 122.309 O1 C2 H6 112.973
O1 C3 O5 122.309 C2 O1 C3 121.821
O4 C2 H6 124.718
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.721      
2 C 0.668      
3 C 0.668      
4 O -0.515      
5 O -0.515      
6 H 0.207      
7 H 0.207      


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 -4.326 4.326
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.068 0.000 0.000
y 0.000 -40.480 0.000
z 0.000 0.000 -26.060
Traceless
 xyz
x 7.202 0.000 0.000
y 0.000 -14.416 0.000
z 0.000 0.000 7.214
Polar
3z2-r214.428
x2-y214.412
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.459 0.000 0.000
y 0.000 5.695 0.000
z 0.000 0.000 2.997


<r2> (average value of r2) Å2
<r2> 126.013
(<r2>)1/2 11.226