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: HSEh1PBE/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 HSEh1PBE/6-31G**
 hartrees
Energy at 0K-302.776702
Energy at 298.15K 
HF Energy-302.776702
Nuclear repulsion energy159.726405
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 HSEh1PBE/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3041 2902 95.35 109.59 0.27 0.43
2 A1 1966 1877 31.52 27.64 0.19 0.32
3 A1 1462 1395 0.00 2.80 0.31 0.47
4 A1 1173 1120 119.76 4.50 0.22 0.37
5 A1 549 523 0.81 8.45 0.36 0.53
6 A1 280 267 13.99 0.74 0.45 0.62
7 A2 1037 990 0.00 1.72 0.75 0.86
8 A2 182 174 0.00 0.40 0.75 0.86
9 B1 1045 997 0.92 3.67 0.75 0.86
10 B1 134 127 4.27 0.10 0.75 0.86
11 B2 3022 2884 0.17 2.14 0.75 0.86
12 B2 1887 1801 649.89 3.09 0.75 0.86
13 B2 1411 1346 9.01 8.81 0.75 0.86
14 B2 1130 1079 596.60 2.22 0.75 0.86
15 B2 714 681 38.62 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9516.3 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 9081.4 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 HSEh1PBE/6-31G**
ABC
1.62444 0.08675 0.08236

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/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 1.174 -0.321
C3 0.000 -1.174 -0.321
O4 0.000 2.230 0.225
O5 0.000 -2.230 0.225
H6 0.000 1.027 -1.415
H7 0.000 -1.027 -1.415

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.36901.36902.23602.23602.07122.0712
C21.36902.34741.18933.44751.10392.4575
C31.36902.34743.44751.18932.45751.1039
O42.23601.18933.44754.46062.03423.6466
O52.23603.44751.18934.46063.64662.0342
H62.07121.10392.45752.03423.64662.0535
H72.07122.45751.10393.64662.03422.0535

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 121.698 O1 C2 H6 113.332
O1 C3 O5 121.698 C2 O1 C3 118.039
O4 C2 H6 124.970
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.388      
2 C 0.455      
3 C 0.455      
4 O -0.378      
5 O -0.378      
6 H 0.117      
7 H 0.117      


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 -25.969 0.000 0.000
y 0.000 -37.964 0.000
z 0.000 0.000 -25.602
Traceless
 xyz
x 5.814 0.000 0.000
y 0.000 -12.178 0.000
z 0.000 0.000 6.364
Polar
3z2-r212.729
x2-y211.995
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.200 0.000 0.000
y 0.000 6.843 0.000
z 0.000 0.000 3.792


<r2> (average value of r2) Å2
<r2> 124.097
(<r2>)1/2 11.140