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All results from a given calculation for C4H4O (Furan)

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-229.854865
Energy at 298.15K 
HF Energy-229.854865
Nuclear repulsion energy161.837255
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/6-311+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 3297 3297 0.02 207.48 0.12 0.21
2 A1 3270 3270 0.03 29.23 0.31 0.47
3 A1 1530 1530 20.96 60.05 0.10 0.18
4 A1 1431 1431 2.64 19.51 0.30 0.46
5 A1 1176 1176 0.67 34.62 0.12 0.21
6 A1 1111 1111 15.09 5.80 0.11 0.19
7 A1 1026 1026 40.54 1.01 0.29 0.45
8 A1 892 892 13.67 0.21 0.62 0.76
9 A2 901 901 0.00 0.56 0.75 0.86
10 A2 747 747 0.00 2.04 0.75 0.86
11 A2 619 619 0.00 0.06 0.75 0.86
12 B1 869 869 0.19 1.85 0.75 0.86
13 B1 767 767 111.20 0.03 0.75 0.86
14 B1 631 631 24.07 0.79 0.75 0.86
15 B2 3290 3290 0.12 10.47 0.75 0.86
16 B2 3259 3259 1.94 94.06 0.75 0.86
17 B2 1609 1609 0.03 0.19 0.75 0.86
18 B2 1293 1293 0.31 0.61 0.75 0.86
19 B2 1231 1231 17.63 0.06 0.75 0.86
20 B2 1072 1072 2.75 4.99 0.75 0.86
21 B2 892 892 0.80 2.73 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15456.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15456.3 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/6-311+G(3df,2p)
ABC
0.31985 0.31311 0.15822

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.150
C2 0.000 1.086 0.347
C3 0.000 -1.086 0.347
C4 0.000 0.714 -0.953
C5 0.000 -0.714 -0.953
H6 0.000 2.041 0.844
H7 0.000 -2.041 0.844
H8 0.000 1.371 -1.807
H9 0.000 -1.371 -1.807

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35061.35062.22152.22152.06382.06383.25963.2596
C21.35062.17181.35292.22041.07623.16592.17313.2674
C31.35062.17182.22041.35293.16591.07623.26742.1731
C42.22151.35292.22041.42732.23403.28881.07732.2523
C52.22152.22041.35291.42733.28882.23402.25231.0773
H62.06381.07623.16592.23403.28884.08172.73424.3203
H72.06383.16591.07623.28882.23404.08174.32032.7342
H83.25962.17313.26741.07732.25232.73424.32032.7413
H93.25963.26742.17312.25231.07734.32032.73422.7413

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.512 O1 C2 H6 116.051
O1 C3 C5 110.512 O1 C3 H7 116.051
C2 O1 C3 107.033 C2 C4 C5 105.972
C2 C4 H8 126.446 C3 C5 C4 105.972
C3 C5 H9 126.446 C4 C2 H6 133.437
C4 C5 H9 127.582 C5 C3 H7 133.437
C5 C4 H8 127.582
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.598      
2 C 0.107      
3 C 0.107      
4 C -0.086      
5 C -0.086      
6 H 0.145      
7 H 0.145      
8 H 0.133      
9 H 0.133      


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 -0.610 0.610
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.067 0.000 0.000
y 0.000 -24.271 0.000
z 0.000 0.000 -27.951
Traceless
 xyz
x -5.955 0.000 0.000
y 0.000 5.738 0.000
z 0.000 0.000 0.218
Polar
3z2-r20.436
x2-y2-7.795
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.075 0.000 0.000
y 0.000 8.407 0.000
z 0.000 0.000 7.714


<r2> (average value of r2) Å2
<r2> 80.793
(<r2>)1/2 8.988