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All results from a given calculation for C4H4O (Furan)

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/6-31G*
 hartrees
Energy at 0K-229.784973
Energy at 298.15K 
HF Energy-229.549172
Nuclear repulsion energy160.726423
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 B2PLYP=FULLultrafine/6-31G*
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 3334 3163 0.02 184.83 0.13 0.23
2 A1 3303 3134 1.19 37.75 0.22 0.36
3 A1 1540 1461 17.98 28.96 0.24 0.39
4 A1 1444 1370 4.87 13.65 0.44 0.61
5 A1 1182 1121 0.05 23.69 0.30 0.46
6 A1 1108 1051 8.57 8.92 0.18 0.30
7 A1 1032 979 39.32 1.54 0.18 0.30
8 A1 887 842 15.72 0.56 0.72 0.83
9 A2 847 804 0.00 1.25 0.75 0.86
10 A2 719 682 0.00 2.18 0.75 0.86
11 A2 607 575 0.00 0.06 0.75 0.86
12 B1 824 781 1.18 0.28 0.75 0.86
13 B1 759 720 85.95 0.93 0.75 0.86
14 B1 624 592 18.54 2.24 0.75 0.86
15 B2 3329 3158 1.94 18.22 0.75 0.86
16 B2 3292 3123 2.53 93.94 0.75 0.86
17 B2 1618 1535 0.53 0.10 0.75 0.86
18 B2 1309 1242 0.38 0.69 0.75 0.86
19 B2 1234 1171 21.14 1.38 0.75 0.86
20 B2 1082 1026 0.75 4.09 0.75 0.86
21 B2 893 848 0.31 3.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15482.8 cm-1
Scaled (by 0.9487) Zero Point Vibrational Energy (zpe) 14688.5 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 B2PLYP=FULLultrafine/6-31G*
ABC
0.31594 0.30830 0.15604

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.162
C2 0.000 1.095 0.347
C3 0.000 -1.095 0.347
C4 0.000 0.717 -0.960
C5 0.000 -0.717 -0.960
H6 0.000 2.049 0.849
H7 0.000 -2.049 0.849
H8 0.000 1.372 -1.818
H9 0.000 -1.372 -1.818

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.36511.36512.24012.24012.07272.07273.28093.2809
C21.36512.18981.36072.23391.07783.18352.18253.2824
C31.36512.18982.23391.36073.18351.07783.28242.1825
C42.24011.36072.23391.43342.24643.30461.07962.2584
C52.24012.23391.36071.43343.30462.24642.25841.0796
H62.07271.07783.18352.24643.30464.09772.75094.3377
H72.07273.18351.07783.30462.24644.09774.33772.7509
H83.28092.18253.28241.07962.25842.75094.33772.7449
H93.28093.28242.18252.25841.07964.33772.75092.7449

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.535 O1 C2 H6 115.588
O1 C3 C5 110.535 O1 C3 H7 115.588
C2 O1 C3 106.658 C2 C4 C5 106.136
C2 C4 H8 126.463 C3 C5 C4 106.136
C3 C5 H9 126.463 C4 C2 H6 133.877
C4 C5 H9 127.401 C5 C3 H7 133.877
C5 C4 H8 127.401
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.405      
2 C 0.070      
3 C 0.070      
4 C -0.200      
5 C -0.200      
6 H 0.172      
7 H 0.172      
8 H 0.161      
9 H 0.161      


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 -0.653 0.653
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.252 0.000 0.000
y 0.000 -23.711 0.000
z 0.000 0.000 -27.784
Traceless
 xyz
x -5.505 0.000 0.000
y 0.000 5.807 0.000
z 0.000 0.000 -0.302
Polar
3z2-r2-0.605
x2-y2-7.541
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.523 0.000 0.000
y 0.000 7.096 0.000
z 0.000 0.000 6.645


<r2> (average value of r2) Å2
<r2> 81.299
(<r2>)1/2 9.017