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All results from a given calculation for C4H4O (Furan)

using model chemistry: HF/daug-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 HF/daug-cc-pVTZ
 hartrees
Energy at 0K-228.712235
Energy at 298.15K 
HF Energy-228.712235
Nuclear repulsion energy162.922572
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 HF/daug-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 3435 3107 0.02 169.01 0.13 0.23
2 A1 3403 3078 0.63 30.43 0.27 0.42
3 A1 1659 1501 32.53 90.89 0.07 0.13
4 A1 1533 1387 3.94 35.01 0.21 0.35
5 A1 1255 1135 0.45 35.66 0.14 0.24
6 A1 1150 1041 43.29 5.92 0.07 0.12
7 A1 1077 975 31.38 1.10 0.67 0.80
8 A1 953 862 19.55 0.20 0.59 0.74
9 A2 1018 921 0.00 2.19 0.75 0.86
10 A2 856 774 0.00 1.96 0.75 0.86
11 A2 661 598 0.00 0.20 0.75 0.86
12 B1 1005 909 1.84 4.37 0.75 0.86
13 B1 859 777 116.29 0.00 0.75 0.86
14 B1 658 595 33.81 1.31 0.75 0.86
15 B2 3428 3101 1.83 10.40 0.75 0.86
16 B2 3391 3068 3.52 83.49 0.75 0.86
17 B2 1738 1572 0.12 1.10 0.75 0.86
18 B2 1407 1273 0.09 0.40 0.75 0.86
19 B2 1303 1179 23.95 0.11 0.75 0.86
20 B2 1155 1045 0.00 7.03 0.75 0.86
21 B2 959 868 2.36 3.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16450.8 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 14881.4 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 HF/daug-cc-pVTZ
ABC
0.32120 0.31979 0.16025

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.139
C2 0.000 1.079 0.344
C3 0.000 -1.079 0.344
C4 0.000 0.720 -0.943
C5 0.000 -0.720 -0.943
H6 0.000 2.028 0.830
H7 0.000 -2.028 0.830
H8 0.000 1.374 -1.787
H9 0.000 -1.374 -1.787

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.34051.34052.20342.20342.05182.05183.23283.2328
C21.34052.15801.33612.21191.06643.14512.15103.2495
C31.34052.15802.21191.33613.14511.06643.24952.1510
C42.20341.33612.21191.43992.20343.27051.06772.2579
C52.20342.21191.33611.43993.27052.20342.25791.0677
H62.05181.06643.14512.20343.27054.05662.69704.2924
H72.05183.14511.06643.27052.20344.05664.29242.6970
H83.23282.15103.24951.06772.25792.69704.29242.7489
H93.23283.24952.15102.25791.06774.29242.69702.7489

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.809 O1 C2 H6 116.495
O1 C3 C5 110.809 O1 C3 H7 116.495
C2 O1 C3 107.207 C2 C4 C5 105.588
C2 C4 H8 126.608 C3 C5 C4 105.588
C3 C5 H9 126.608 C4 C2 H6 132.696
C4 C5 H9 127.804 C5 C3 H7 132.696
C5 C4 H8 127.804
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.388      
2 C -0.966      
3 C -0.966      
4 C -0.578      
5 C -0.578      
6 H 1.024      
7 H 1.024      
8 H 0.714      
9 H 0.714      


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 -0.695 0.695
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.346 0.000 0.000
y 0.000 -24.324 0.000
z 0.000 0.000 -28.207
Traceless
 xyz
x -6.081 0.000 0.000
y 0.000 5.953 0.000
z 0.000 0.000 0.128
Polar
3z2-r20.256
x2-y2-8.022
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.045 0.000 0.000
y 0.000 7.953 0.000
z 0.000 0.000 7.535


<r2> (average value of r2) Å2
<r2> 80.107
(<r2>)1/2 8.950