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All results from a given calculation for C4H4O (Furan)

using model chemistry: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-229.995604
Energy at 298.15K 
HF Energy-229.995604
Nuclear repulsion energy161.035159
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 mPW1PW91/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3319 3180 0.04 214.02 0.11 0.20
2 A1 3289 3152 0.09 31.76 0.29 0.45
3 A1 1536 1472 21.64 69.21 0.10 0.19
4 A1 1431 1372 1.59 15.25 0.37 0.55
5 A1 1173 1124 0.68 35.79 0.11 0.20
6 A1 1105 1058 12.96 5.84 0.14 0.24
7 A1 1020 977 43.80 1.26 0.25 0.41
8 A1 887 850 12.97 0.18 0.61 0.76
9 A2 874 838 0.00 0.51 0.75 0.86
10 A2 737 706 0.00 1.43 0.75 0.86
11 A2 616 590 0.00 0.03 0.75 0.86
12 B1 848 813 1.03 1.76 0.75 0.86
13 B1 760 728 112.55 0.03 0.75 0.86
14 B1 627 600 24.34 0.81 0.75 0.86
15 B2 3312 3174 0.21 12.07 0.75 0.86
16 B2 3278 3141 2.20 95.98 0.75 0.86
17 B2 1613 1546 0.00 0.20 0.75 0.86
18 B2 1279 1226 0.28 0.61 0.75 0.86
19 B2 1227 1175 17.43 0.05 0.75 0.86
20 B2 1064 1020 3.14 5.27 0.75 0.86
21 B2 889 852 0.85 2.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15441.4 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 14797.5 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 mPW1PW91/aug-cc-pVDZ
ABC
0.31696 0.30980 0.15667

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.156
C2 0.000 1.091 0.349
C3 0.000 -1.091 0.349
C4 0.000 0.716 -0.959
C5 0.000 -0.716 -0.959
H6 0.000 2.051 0.848
H7 0.000 -2.051 0.848
H8 0.000 1.379 -1.817
H9 0.000 -1.379 -1.817

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35671.35672.23292.23292.07432.07433.27713.2771
C21.35672.18151.36042.23081.08253.18152.18513.2848
C31.35672.18152.23081.36043.18151.08253.28482.1851
C42.23291.36042.23081.43292.24663.30541.08392.2641
C52.23292.23081.36041.43293.30542.24662.26411.0839
H62.07431.08253.18152.24663.30544.10272.74874.3437
H72.07433.18151.08253.30542.24664.10274.34372.7487
H83.27712.18513.28481.08392.26412.74874.34372.7574
H93.27713.28482.18512.26411.08394.34372.74872.7574

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.523 O1 C2 H6 116.056
O1 C3 C5 110.523 O1 C3 H7 116.056
C2 O1 C3 107.015 C2 C4 C5 105.969
C2 C4 H8 126.371 C3 C5 C4 105.969
C3 C5 H9 126.371 C4 C2 H6 133.422
C4 C5 H9 127.659 C5 C3 H7 133.422
C5 C4 H8 127.659
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.395      
2 C 0.208      
3 C 0.208      
4 C 0.779      
5 C 0.779      
6 H -0.396      
7 H -0.396      
8 H -0.393      
9 H -0.393      


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 -0.627 0.627
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.079 0.000 0.000
y 0.000 -24.225 0.000
z 0.000 0.000 -28.003
Traceless
 xyz
x -5.965 0.000 0.000
y 0.000 5.815 0.000
z 0.000 0.000 0.150
Polar
3z2-r20.299
x2-y2-7.854
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.118 0.000 0.000
y 0.000 8.561 0.000
z 0.000 0.000 7.826


<r2> (average value of r2) Å2
<r2> 81.432
(<r2>)1/2 9.024