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

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-301.269292
Energy at 298.15K 
HF Energy-301.269292
Nuclear repulsion energy157.007112
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 B3PW91/3-21G*
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 3017 2895 104.14      
2 A1 1877 1801 18.86      
3 A1 1485 1424 0.63      
4 A1 1077 1033 102.84      
5 A1 532 511 0.91      
6 A1 263 253 10.53      
7 A2 1064 1021 0.00      
8 A2 183 176 0.00      
9 B1 1066 1022 0.00      
10 B1 129 124 2.85      
11 B2 2999 2877 1.80      
12 B2 1782 1710 515.30      
13 B2 1432 1374 1.88      
14 B2 1056 1013 545.51      
15 B2 698 669 37.97      

Unscaled Zero Point Vibrational Energy (zpe) 9329.6 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 8950.8 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 B3PW91/3-21G*
ABC
1.59754 0.08346 0.07932

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.404
C2 0.000 1.197 -0.324
C3 0.000 -1.197 -0.324
O4 0.000 2.275 0.218
O5 0.000 -2.275 0.218
H6 0.000 1.021 -1.410
H7 0.000 -1.021 -1.410

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.40081.40082.28232.28232.08182.0818
C21.40082.39311.20663.51321.10002.4691
C31.40082.39313.51321.20662.46911.1000
O42.28231.20663.51324.54932.05463.6757
O52.28233.51321.20664.54933.67572.0546
H62.08181.10002.46912.05463.67572.0420
H72.08182.46911.10003.67572.05462.0420

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 121.986 O1 C2 H6 112.147
O1 C3 O5 121.986 C2 O1 C3 117.342
O4 C2 H6 125.867
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.503      
2 C 0.458      
3 C 0.458      
4 O -0.407      
5 O -0.407      
6 H 0.201      
7 H 0.201      


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 -3.410 3.410
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.122 0.000 0.000
y 0.000 -38.054 0.000
z 0.000 0.000 -25.978
Traceless
 xyz
x 5.894 0.000 0.000
y 0.000 -12.004 0.000
z 0.000 0.000 6.111
Polar
3z2-r212.222
x2-y211.932
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.574 0.000 0.000
y 0.000 6.677 0.000
z 0.000 0.000 3.259


<r2> (average value of r2) Å2
<r2> 128.122
(<r2>)1/2 11.319