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All results from a given calculation for C4H4O (Furan)

using model chemistry: B3LYP/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-229.985627
Energy at 298.15K 
HF Energy-229.985627
Nuclear repulsion energy158.375364
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/LANL2DZ
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 3340 3210 0.34 171.36 0.13 0.22
2 A1 3296 3168 0.39 32.93 0.21 0.35
3 A1 1491 1433 15.03 52.10 0.26 0.41
4 A1 1404 1349 5.17 10.80 0.38 0.55
5 A1 1155 1110 0.70 24.28 0.29 0.45
6 A1 1076 1035 0.29 9.57 0.12 0.21
7 A1 990 951 52.96 5.34 0.23 0.37
8 A1 872 838 19.88 2.03 0.73 0.84
9 A2 926 890 0.00 0.32 0.75 0.86
10 A2 751 722 0.00 2.47 0.75 0.86
11 A2 616 592 0.00 0.01 0.75 0.86
12 B1 883 849 1.35 4.02 0.75 0.86
13 B1 768 738 174.61 0.69 0.75 0.86
14 B1 605 581 25.82 3.41 0.75 0.86
15 B2 3329 3200 1.02 16.39 0.75 0.86
16 B2 3282 3154 3.99 74.66 0.75 0.86
17 B2 1579 1517 0.90 0.41 0.75 0.86
18 B2 1283 1234 0.75 0.50 0.75 0.86
19 B2 1185 1139 27.08 1.66 0.75 0.86
20 B2 1039 999 1.64 3.96 0.75 0.86
21 B2 890 855 0.04 6.87 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15378.6 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 14781.9 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/LANL2DZ
ABC
0.30438 0.30137 0.15143

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.181
C2 0.000 1.123 0.347
C3 0.000 -1.123 0.347
C4 0.000 0.725 -0.970
C5 0.000 -0.725 -0.970
H6 0.000 2.079 0.845
H7 0.000 -2.079 0.845
H8 0.000 1.374 -1.834
H9 0.000 -1.374 -1.834

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.39861.39862.26982.26982.10552.10553.31293.3129
C21.39862.24551.37562.26911.07803.23992.19523.3147
C31.39862.24552.26911.37563.23991.07803.31472.1952
C42.26981.37562.26911.45022.26433.34001.08022.2695
C52.26982.26911.37561.45023.34002.26432.26951.0802
H62.10551.07803.23992.26433.34004.15722.77034.3698
H72.10553.23991.07803.34002.26434.15724.36982.7703
H83.31292.19523.31471.08022.26952.77034.36982.7471
H93.31293.31472.19522.26951.08024.36982.77032.7471

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 109.804 O1 C2 H6 115.859
O1 C3 C5 109.804 O1 C3 H7 115.859
C2 O1 C3 106.788 C2 C4 C5 106.801
C2 C4 H8 126.307 C3 C5 C4 106.801
C3 C5 H9 126.307 C4 C2 H6 134.336
C4 C5 H9 126.891 C5 C3 H7 134.336
C5 C4 H8 126.891
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.245      
2 C -0.128      
3 C -0.128      
4 C -0.257      
5 C -0.257      
6 H 0.258      
7 H 0.258      
8 H 0.250      
9 H 0.250      


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 -1.142 1.142
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.307 0.000 0.000
y 0.000 -23.141 0.000
z 0.000 0.000 -28.591
Traceless
 xyz
x -6.441 0.000 0.000
y 0.000 7.308 0.000
z 0.000 0.000 -0.867
Polar
3z2-r2-1.735
x2-y2-9.166
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.733 0.000 0.000
y 0.000 7.115 0.000
z 0.000 0.000 6.767


<r2> (average value of r2) Å2
<r2> 83.393
(<r2>)1/2 9.132