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All results from a given calculation for C4H4O (Furan)

using model chemistry: PBEPBEultrafine/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-229.825143
Energy at 298.15K 
HF Energy-229.825143
Nuclear repulsion energy160.403356
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/6-311+G(3df,2p)
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 3210 3210 0.01 226.75 0.12 0.21
2 A1 3183 3183 0.26 34.75 0.30 0.46
3 A1 1467 1467 17.18 56.18 0.11 0.19
4 A1 1377 1377 2.42 14.66 0.34 0.51
5 A1 1135 1135 0.13 34.07 0.11 0.21
6 A1 1070 1070 7.43 7.95 0.11 0.20
7 A1 990 990 41.40 1.94 0.22 0.36
8 A1 859 859 12.88 0.13 0.69 0.82
9 A2 851 851 0.00 0.29 0.75 0.86
10 A2 696 696 0.00 2.08 0.75 0.86
11 A2 597 597 0.00 0.03 0.75 0.86
12 B1 813 813 0.07 1.46 0.75 0.86
13 B1 727 727 111.30 0.06 0.75 0.86
14 B1 610 610 19.55 0.73 0.75 0.86
15 B2 3203 3203 0.22 13.03 0.75 0.86
16 B2 3172 3172 2.00 102.46 0.75 0.86
17 B2 1543 1543 0.00 0.09 0.75 0.86
18 B2 1244 1244 0.13 0.68 0.75 0.86
19 B2 1168 1168 16.59 0.18 0.75 0.86
20 B2 1028 1028 2.45 4.75 0.75 0.86
21 B2 861 861 0.58 2.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14900.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14900.8 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 PBEPBEultrafine/6-311+G(3df,2p)
ABC
0.31490 0.30702 0.15545

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.164
C2 0.000 1.097 0.348
C3 0.000 -1.097 0.348
C4 0.000 0.716 -0.962
C5 0.000 -0.716 -0.962
H6 0.000 2.057 0.851
H7 0.000 -2.057 0.851
H8 0.000 1.376 -1.823
H9 0.000 -1.376 -1.823

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.36681.36682.24362.24362.08042.08043.28913.2891
C21.36682.19351.36452.23721.08373.19332.18953.2912
C31.36682.19352.23721.36453.19331.08373.29122.1895
C42.24361.36452.23721.43302.25483.31341.08492.2631
C52.24362.23721.36451.43303.31342.25482.26311.0849
H62.08041.08373.19332.25483.31344.11352.75964.3518
H72.08043.19331.08373.31342.25484.11354.35182.7596
H83.28912.18953.29121.08492.26312.75964.35182.7527
H93.28913.29122.18952.26311.08494.35182.75962.7527

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.459 O1 C2 H6 115.720
O1 C3 C5 110.459 O1 C3 H7 115.720
C2 O1 C3 106.722 C2 C4 C5 106.180
C2 C4 H8 126.357 C3 C5 C4 106.180
C3 C5 H9 126.357 C4 C2 H6 133.822
C4 C5 H9 127.462 C5 C3 H7 133.822
C5 C4 H8 127.462
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.565      
2 C 0.105      
3 C 0.105      
4 C -0.089      
5 C -0.089      
6 H 0.140      
7 H 0.140      
8 H 0.126      
9 H 0.126      


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 -0.594 0.594
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.231 0.000 0.000
y 0.000 -24.603 0.000
z 0.000 0.000 -28.238
Traceless
 xyz
x -5.810 0.000 0.000
y 0.000 5.632 0.000
z 0.000 0.000 0.179
Polar
3z2-r20.358
x2-y2-7.628
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.238 0.000 0.000
y 0.000 8.829 0.000
z 0.000 0.000 8.035


<r2> (average value of r2) Å2
<r2> 82.056
(<r2>)1/2 9.058