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All results from a given calculation for C4H4O (Furan)

using model chemistry: PBE1PBE/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 PBE1PBE/cc-pVTZ
 hartrees
Energy at 0K-229.838799
Energy at 298.15K 
HF Energy-229.838799
Nuclear repulsion energy161.778540
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 PBE1PBE/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 3298 3169 0.01 216.34 0.13 0.24
2 A1 3271 3144 0.12 24.86 0.40 0.57
3 A1 1534 1474 19.38 41.11 0.16 0.27
4 A1 1433 1378 2.81 14.68 0.37 0.54
5 A1 1177 1131 0.86 29.04 0.17 0.30
6 A1 1113 1069 14.18 5.81 0.22 0.36
7 A1 1025 985 40.11 0.83 0.25 0.40
8 A1 890 856 14.12 0.37 0.73 0.84
9 A2 897 862 0.00 0.43 0.75 0.86
10 A2 747 718 0.00 0.07 0.75 0.86
11 A2 621 597 0.00 0.01 0.75 0.86
12 B1 865 831 0.11 0.50 0.75 0.86
13 B1 767 738 102.51 0.45 0.75 0.86
14 B1 633 608 23.68 1.44 0.75 0.86
15 B2 3290 3162 0.55 9.28 0.75 0.86
16 B2 3261 3134 1.96 100.16 0.75 0.86
17 B2 1614 1551 0.39 0.50 0.75 0.86
18 B2 1291 1240 0.54 0.54 0.75 0.86
19 B2 1234 1186 17.25 0.33 0.75 0.86
20 B2 1072 1030 3.09 4.71 0.75 0.86
21 B2 894 859 0.55 3.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15464.1 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 14861.0 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 PBE1PBE/cc-pVTZ
ABC
0.31983 0.31270 0.15811

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.152
C2 0.000 1.086 0.347
C3 0.000 -1.086 0.347
C4 0.000 0.714 -0.954
C5 0.000 -0.714 -0.954
H6 0.000 2.041 0.843
H7 0.000 -2.041 0.843
H8 0.000 1.371 -1.808
H9 0.000 -1.371 -1.808

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35171.35172.22332.22332.06472.06473.26163.2616
C21.35172.17171.35302.22041.07673.16642.17343.2678
C31.35172.17172.22041.35303.16641.07673.26782.1734
C42.22331.35302.22041.42722.23423.28921.07762.2527
C52.22332.22041.35301.42723.28922.23422.25271.0776
H62.06471.07673.16642.23423.28924.08292.73414.3210
H72.06473.16641.07673.28922.23424.08294.32102.7341
H83.26162.17343.26781.07762.25272.73414.32102.7420
H93.26163.26782.17342.25271.07764.32102.73412.7420

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.577 O1 C2 H6 116.020
O1 C3 C5 110.577 O1 C3 H7 116.020
C2 O1 C3 106.903 C2 C4 C5 105.971
C2 C4 H8 126.434 C3 C5 C4 105.971
C3 C5 H9 126.434 C4 C2 H6 133.403
C4 C5 H9 127.596 C5 C3 H7 133.403
C5 C4 H8 127.596
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.131      
2 C -0.023      
3 C -0.023      
4 C -0.175      
5 C -0.175      
6 H 0.137      
7 H 0.137      
8 H 0.127      
9 H 0.127      


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 -0.545 0.545
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.726 0.000 0.000
y 0.000 -24.023 0.000
z 0.000 0.000 -27.699
Traceless
 xyz
x -5.865 0.000 0.000
y 0.000 5.690 0.000
z 0.000 0.000 0.175
Polar
3z2-r20.351
x2-y2-7.703
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.995 0.000 0.000
y 0.000 7.879 0.000
z 0.000 0.000 7.308


<r2> (average value of r2) Å2
<r2> 80.660
(<r2>)1/2 8.981