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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-302.953057
Energy at 298.15K 
HF Energy-302.953057
Nuclear repulsion energy159.346549
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 3041 2910 103.25      
2 A1 1949 1865 30.41      
3 A1 1467 1403 0.00      
4 A1 1159 1109 117.00      
5 A1 542 519 0.70      
6 A1 278 266 13.62      
7 A2 1027 983 0.00      
8 A2 177 169 0.00      
9 B1 1035 990 0.86      
10 B1 132 126 4.14      
11 B2 3022 2891 0.10      
12 B2 1870 1789 641.78      
13 B2 1412 1351 9.67      
14 B2 1112 1064 597.15      
15 B2 709 679 38.62      

Unscaled Zero Point Vibrational Energy (zpe) 9466.1 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 9056.2 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
1.62023 0.08627 0.08190

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 0.383
C2 0.000 1.178 -0.321
C3 0.000 -1.178 -0.321
O4 0.000 2.236 0.226
O5 0.000 -2.236 0.226
H6 0.000 1.034 -1.416
H7 0.000 -1.034 -1.416

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.37291.37292.24162.24162.07512.0751
C21.37292.35621.19133.45791.10412.4677
C31.37292.35623.45791.19132.46771.1041
O42.24161.19133.45794.47222.03553.6589
O52.24163.45791.19134.47223.65892.0355
H62.07511.10412.46772.03553.65892.0671
H72.07512.46771.10413.65892.03552.0671

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 121.737 O1 C2 H6 113.366
O1 C3 O5 121.737 C2 O1 C3 118.217
O4 C2 H6 124.897
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 -0.374      
2 C 0.399      
3 C 0.399      
4 O -0.367      
5 O -0.367      
6 H 0.155      
7 H 0.155      


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 -3.217 3.217
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.953 0.000 0.000
y 0.000 -37.903 0.000
z 0.000 0.000 -25.566
Traceless
 xyz
x 5.781 0.000 0.000
y 0.000 -12.143 0.000
z 0.000 0.000 6.362
Polar
3z2-r212.723
x2-y211.950
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.185 0.000 0.000
y 0.000 6.897 0.000
z 0.000 0.000 3.790


<r2> (average value of r2) Å2
<r2> 124.656
(<r2>)1/2 11.165