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All results from a given calculation for C4H4O (Furan)

using model chemistry: B3LYP/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/cc-pVQZ
 hartrees
Energy at 0K-230.126545
Energy at 298.15K 
HF Energy-230.126545
Nuclear repulsion energy161.296619
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 B3LYP/cc-pVQZ
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 3281 3178 0.04 210.06 0.12 0.22
2 A1 3252 3150 0.36 39.85 0.24 0.38
3 A1 1510 1463 17.86 44.66 0.13 0.23
4 A1 1415 1370 3.98 18.94 0.32 0.48
5 A1 1167 1130 0.14 29.01 0.17 0.29
6 A1 1085 1051 11.52 7.10 0.09 0.16
7 A1 1014 982 41.44 1.35 0.17 0.29
8 A1 889 861 16.14 0.33 0.73 0.85
9 A2 894 866 0.00 0.49 0.75 0.86
10 A2 739 716 0.00 0.02 0.75 0.86
11 A2 618 599 0.00 0.03 0.75 0.86
12 B1 859 832 0.01 0.81 0.75 0.86
13 B1 761 737 101.19 0.23 0.75 0.86
14 B1 624 605 23.09 1.13 0.75 0.86
15 B2 3274 3172 0.41 14.75 0.75 0.86
16 B2 3242 3141 2.46 94.83 0.75 0.86
17 B2 1592 1543 0.16 0.36 0.75 0.86
18 B2 1296 1256 0.16 0.50 0.75 0.86
19 B2 1198 1161 18.23 0.58 0.75 0.86
20 B2 1062 1028 1.00 4.72 0.75 0.86
21 B2 895 867 0.78 2.96 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15331.8 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 14853.5 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 B3LYP/cc-pVQZ
ABC
0.31707 0.31155 0.15714

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.156
C2 0.000 1.093 0.346
C3 0.000 -1.093 0.346
C4 0.000 0.716 -0.955
C5 0.000 -0.716 -0.955
H6 0.000 2.046 0.840
H7 0.000 -2.046 0.840
H8 0.000 1.369 -1.809
H9 0.000 -1.369 -1.809

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.36021.36022.22932.22932.07032.07033.26633.2663
C21.36022.18501.35432.22781.07413.17722.17293.2720
C31.36022.18502.22781.35433.17721.07413.27202.1729
C42.22931.35432.22781.43202.23433.29421.07552.2535
C52.22932.22781.35431.43203.29422.23432.25351.0755
H62.07031.07413.17722.23433.29424.09202.73464.3226
H72.07033.17721.07413.29422.23434.09204.32262.7346
H83.26632.17293.27201.07552.25352.73464.32262.7388
H93.26633.27202.17292.25351.07554.32262.73462.7388

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.420 O1 C2 H6 116.032
O1 C3 C5 110.420 O1 C3 H7 116.032
C2 O1 C3 106.876 C2 C4 C5 106.142
C2 C4 H8 126.445 C3 C5 C4 106.142
C3 C5 H9 126.445 C4 C2 H6 133.548
C4 C5 H9 127.413 C5 C3 H7 133.548
C5 C4 H8 127.413
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.279      
2 C 0.067      
3 C 0.067      
4 C -0.190      
5 C -0.190      
6 H 0.146      
7 H 0.146      
8 H 0.116      
9 H 0.116      


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 -0.640 0.640
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.924 0.000 0.000
y 0.000 -24.444 0.000
z 0.000 0.000 -28.265
Traceless
 xyz
x -5.569 0.000 0.000
y 0.000 5.651 0.000
z 0.000 0.000 -0.081
Polar
3z2-r2-0.163
x2-y2-7.480
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.550 0.000 0.000
y 0.000 8.212 0.000
z 0.000 0.000 7.616


<r2> (average value of r2) Å2
<r2> 81.251
(<r2>)1/2 9.014