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

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-302.955889
Energy at 298.15K 
HF Energy-302.955889
Nuclear repulsion energy159.356736
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 B3PW91/6-31G**
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 3028 2902 97.68      
2 A1 1948 1867 30.56      
3 A1 1456 1396 0.01      
4 A1 1159 1111 117.19      
5 A1 542 519 0.71      
6 A1 276 265 13.67      
7 A2 1029 986 0.00      
8 A2 179 172 0.00      
9 B1 1036 993 0.68      
10 B1 133 127 4.16      
11 B2 3009 2884 0.09      
12 B2 1869 1791 635.55      
13 B2 1405 1347 8.49      
14 B2 1111 1064 596.33      
15 B2 709 680 38.61      

Unscaled Zero Point Vibrational Energy (zpe) 9444.0 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 9051.2 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 B3PW91/6-31G**
ABC
1.61762 0.08632 0.08195

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.384
C2 0.000 1.178 -0.322
C3 0.000 -1.178 -0.322
O4 0.000 2.236 0.226
O5 0.000 -2.236 0.226
H6 0.000 1.032 -1.416
H7 0.000 -1.032 -1.416

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37311.37312.24112.24112.07512.0751
C21.37312.35521.19143.45681.10412.4654
C31.37312.35523.45681.19142.46541.1041
O42.24111.19143.45684.47102.03653.6567
O52.24113.45681.19144.47103.65672.0365
H62.07511.10412.46542.03653.65672.0632
H72.07512.46541.10413.65672.03652.0632

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 121.667 O1 C2 H6 113.344
O1 C3 O5 121.667 C2 O1 C3 118.110
O4 C2 H6 124.989
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.387      
2 C 0.455      
3 C 0.455      
4 O -0.379      
5 O -0.379      
6 H 0.118      
7 H 0.118      


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 -3.220 3.220
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.934 0.000 0.000
y 0.000 -37.898 0.000
z 0.000 0.000 -25.552
Traceless
 xyz
x 5.792 0.000 0.000
y 0.000 -12.155 0.000
z 0.000 0.000 6.363
Polar
3z2-r212.727
x2-y211.965
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.205 0.000 0.000
y 0.000 6.922 0.000
z 0.000 0.000 3.812


<r2> (average value of r2) Å2
<r2> 124.593
(<r2>)1/2 11.162