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

using model chemistry: PBEPBEultrafine/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBEultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-302.880377
Energy at 298.15K 
HF Energy-302.880377
Nuclear repulsion energy158.267696
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 PBEPBEultrafine/aug-cc-pVTZ
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 2917 2885 80.58 138.14 0.26 0.41
2 A1 1842 1821 24.57 52.37 0.16 0.28
3 A1 1377 1361 0.39 3.68 0.45 0.63
4 A1 1088 1076 90.49 2.18 0.09 0.16
5 A1 515 509 0.18 11.66 0.21 0.35
6 A1 266 263 12.57 0.75 0.18 0.31
7 A2 971 960 0.00 0.19 0.75 0.86
8 A2 183 181 0.00 0.38 0.75 0.86
9 B1 978 967 0.40 1.93 0.75 0.86
10 B1 129 128 5.00 0.08 0.75 0.86
11 B2 2898 2866 2.65 0.32 0.75 0.86
12 B2 1764 1744 643.91 2.27 0.75 0.86
13 B2 1324 1309 4.36 3.77 0.75 0.86
14 B2 989 978 635.88 3.21 0.75 0.86
15 B2 683 676 42.23 0.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8962.0 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 8861.7 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 PBEPBEultrafine/aug-cc-pVTZ
ABC
1.59119 0.08518 0.08086

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.399
C2 0.000 1.186 -0.324
C3 0.000 -1.186 -0.324
O4 0.000 2.250 0.221
O5 0.000 -2.250 0.221
H6 0.000 1.027 -1.422
H7 0.000 -1.027 -1.422

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7
O11.38891.38892.25742.25742.09082.0908
C21.38892.37241.19563.47951.10992.4711
C31.38892.37243.47951.19562.47111.1099
O42.25741.19563.47954.50072.04863.6666
O52.25743.47951.19564.50073.66662.0486
H62.09081.10992.47112.04863.66662.0546
H72.09082.47111.10993.66662.04862.0546

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 121.537 O1 C2 H6 113.118
O1 C3 O5 121.537 C2 O1 C3 117.304
O4 C2 H6 125.345
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.077      
2 C 0.121      
3 C 0.121      
4 O -0.459      
5 O -0.459      
6 H 0.376      
7 H 0.376      


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 -3.132 3.132
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.752 0.000 0.000
y 0.000 -38.988 0.000
z 0.000 0.000 -26.392
Traceless
 xyz
x 5.938 0.000 0.000
y 0.000 -12.415 0.000
z 0.000 0.000 6.477
Polar
3z2-r212.955
x2-y212.236
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.635 0.000 0.000
y 0.000 8.658 0.000
z 0.000 0.000 5.269


<r2> (average value of r2) Å2
<r2> 126.561
(<r2>)1/2 11.250