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All results from a given calculation for C4H4O (Furan)

using model chemistry: mPW1PW91/daug-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/daug-cc-pVDZ
 hartrees
Energy at 0K-229.996828
Energy at 298.15K 
HF Energy-229.996828
Nuclear repulsion energy161.053246
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/daug-cc-pVDZ
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 3318 3318 0.03 210.77 0.11 0.20
2 A1 3289 3289 0.09 32.90 0.28 0.43
3 A1 1535 1535 21.91 71.62 0.11 0.19
4 A1 1432 1432 1.44 15.60 0.37 0.54
5 A1 1174 1174 0.67 37.00 0.11 0.19
6 A1 1105 1105 12.96 5.75 0.13 0.22
7 A1 1021 1021 43.36 1.38 0.26 0.41
8 A1 887 887 13.01 0.14 0.54 0.70
9 A2 885 885 0.00 0.43 0.75 0.86
10 A2 736 736 0.00 1.59 0.75 0.86
11 A2 615 615 0.00 0.06 0.75 0.86
12 B1 857 857 0.72 1.76 0.75 0.86
13 B1 764 764 112.48 0.03 0.75 0.86
14 B1 627 627 23.88 0.87 0.75 0.86
15 B2 3311 3311 0.21 12.11 0.75 0.86
16 B2 3277 3277 2.25 95.63 0.75 0.86
17 B2 1612 1612 0.00 0.18 0.75 0.86
18 B2 1276 1276 0.28 0.67 0.75 0.86
19 B2 1226 1226 17.39 0.04 0.75 0.86
20 B2 1064 1064 2.86 5.06 0.75 0.86
21 B2 889 889 0.87 2.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15449.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15449.8 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/daug-cc-pVDZ
ABC
0.31702 0.30985 0.15670

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/daug-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 2.050 0.848
H7 0.000 -2.050 0.848
H8 0.000 1.378 -1.816
H9 0.000 -1.378 -1.816

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35671.35672.23282.23282.07342.07343.27633.2763
C21.35672.18151.36042.23081.08173.18062.18443.2841
C31.35672.18152.23081.36043.18061.08173.28412.1844
C42.23281.36042.23081.43282.24603.30461.08332.2635
C52.23282.23081.36041.43283.30462.24602.26351.0833
H62.07341.08173.18062.24603.30464.10092.74784.3424
H72.07343.18061.08173.30462.24604.10094.34242.7478
H83.27632.18443.28411.08332.26352.74784.34242.7568
H93.27633.28412.18442.26351.08334.34242.74782.7568

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.519 O1 C2 H6 116.036
O1 C3 C5 110.519 O1 C3 H7 116.036
C2 O1 C3 107.018 C2 C4 C5 105.971
C2 C4 H8 126.360 C3 C5 C4 105.971
C3 C5 H9 126.360 C4 C2 H6 133.445
C4 C5 H9 127.669 C5 C3 H7 133.445
C5 C4 H8 127.669
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.214      
2 C 0.469      
3 C 0.469      
4 C 1.281      
5 C 1.281      
6 H -0.787      
7 H -0.787      
8 H -0.857      
9 H -0.857      


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 -0.619 0.619
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.074 0.000 0.000
y 0.000 -24.248 0.000
z 0.000 0.000 -28.005
Traceless
 xyz
x -5.947 0.000 0.000
y 0.000 5.792 0.000
z 0.000 0.000 0.155
Polar
3z2-r20.310
x2-y2-7.826
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.158 0.000 0.000
y 0.000 8.647 0.000
z 0.000 0.000 7.870


<r2> (average value of r2) Å2
<r2> 81.420
(<r2>)1/2 9.023