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All results from a given calculation for C4H4O (Furan)

using model chemistry: HSEh1PBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-229.791293
Energy at 298.15K 
HF Energy-229.791293
Nuclear repulsion energy161.197922
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 HSEh1PBE/6-31+G**
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 3325 3174 0.02 204.80 0.14 0.25
2 A1 3295 3146 0.06 38.82 0.25 0.41
3 A1 1538 1468 24.13 62.22 0.12 0.21
4 A1 1440 1375 1.58 17.47 0.36 0.53
5 A1 1178 1125 0.58 33.13 0.14 0.24
6 A1 1114 1064 16.47 6.34 0.12 0.21
7 A1 1030 984 44.80 1.10 0.29 0.44
8 A1 888 848 13.27 0.80 0.60 0.75
9 A2 888 848 0.00 0.68 0.75 0.86
10 A2 739 705 0.00 1.63 0.75 0.86
11 A2 613 585 0.00 0.04 0.75 0.86
12 B1 854 816 0.02 2.18 0.75 0.86
13 B1 762 728 127.76 0.18 0.75 0.86
14 B1 627 599 25.50 1.19 0.75 0.86
15 B2 3319 3169 0.12 15.45 0.75 0.86
16 B2 3284 3135 2.35 97.37 0.75 0.86
17 B2 1618 1545 0.02 0.18 0.75 0.86
18 B2 1291 1233 0.76 0.92 0.75 0.86
19 B2 1243 1186 18.44 0.06 0.75 0.86
20 B2 1076 1027 4.30 5.39 0.75 0.86
21 B2 890 850 0.62 4.16 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15505.5 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 14804.7 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 HSEh1PBE/6-31+G**
ABC
0.31760 0.31034 0.15696

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.155
C2 0.000 1.091 0.349
C3 0.000 -1.091 0.349
C4 0.000 0.715 -0.958
C5 0.000 -0.715 -0.958
H6 0.000 2.046 0.849
H7 0.000 -2.046 0.849
H8 0.000 1.374 -1.814
H9 0.000 -1.374 -1.814

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35601.35602.23072.23072.06912.06913.27193.2719
C21.35602.18111.35982.22941.07893.17662.18203.2797
C31.35602.18112.22941.35983.17661.07893.27972.1820
C42.23071.35982.22941.43102.24463.30081.08052.2585
C52.23072.22941.35981.43103.30082.24462.25851.0805
H62.06911.07893.17662.24463.30084.09282.74744.3356
H72.06913.17661.07893.30082.24464.09284.33562.7474
H83.27192.18203.27971.08052.25852.74744.33562.7487
H93.27193.27972.18202.25851.08054.33562.74742.7487

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.449 O1 C2 H6 115.906
O1 C3 C5 110.449 O1 C3 H7 115.906
C2 O1 C3 107.078 C2 C4 C5 106.012
C2 C4 H8 126.417 C3 C5 C4 106.012
C3 C5 H9 126.417 C4 C2 H6 133.645
C4 C5 H9 127.571 C5 C3 H7 133.645
C5 C4 H8 127.571
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.219      
2 C -0.138      
3 C -0.138      
4 C -0.089      
5 C -0.089      
6 H 0.170      
7 H 0.170      
8 H 0.166      
9 H 0.166      


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 -0.677 0.677
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.320 0.000 0.000
y 0.000 -24.052 0.000
z 0.000 0.000 -28.144
Traceless
 xyz
x -6.222 0.000 0.000
y 0.000 6.180 0.000
z 0.000 0.000 0.042
Polar
3z2-r20.083
x2-y2-8.268
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.626 0.000 0.000
y 0.000 7.967 0.000
z 0.000 0.000 7.544


<r2> (average value of r2) Å2
<r2> 81.336
(<r2>)1/2 9.019