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All results from a given calculation for C4H4O (Furan)

using model chemistry: PBEPBE/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 PBEPBE/daug-cc-pVDZ
 hartrees
Energy at 0K-229.778030
Energy at 298.15K 
HF Energy-229.778030
Nuclear repulsion energy159.552329
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 PBEPBE/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 3225 3225 0.02 235.54 0.11 0.20
2 A1 3196 3196 0.30 41.47 0.25 0.41
3 A1 1469 1469 17.97 68.06 0.11 0.20
4 A1 1375 1375 1.22 10.61 0.45 0.62
5 A1 1129 1129 0.13 36.95 0.10 0.19
6 A1 1063 1063 6.12 8.14 0.14 0.25
7 A1 981 981 43.31 2.54 0.21 0.35
8 A1 853 853 11.81 0.03 0.60 0.75
9 A2 838 838 0.00 0.25 0.75 0.86
10 A2 689 689 0.00 1.31 0.75 0.86
11 A2 593 593 0.00 0.04 0.75 0.86
12 B1 801 801 0.17 1.14 0.75 0.86
13 B1 723 723 111.75 0.06 0.75 0.86
14 B1 606 606 19.87 0.76 0.75 0.86
15 B2 3219 3219 0.21 15.98 0.75 0.86
16 B2 3185 3185 2.24 106.87 0.75 0.86
17 B2 1542 1542 0.06 0.06 0.75 0.86
18 B2 1223 1223 0.08 0.68 0.75 0.86
19 B2 1162 1162 16.24 0.12 0.75 0.86
20 B2 1018 1018 2.82 4.84 0.75 0.86
21 B2 855 855 0.62 1.80 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14872.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14872.9 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 PBEPBE/daug-cc-pVDZ
ABC
0.31190 0.30349 0.15382

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.170
C2 0.000 1.102 0.351
C3 0.000 -1.102 0.351
C4 0.000 0.719 -0.968
C5 0.000 -0.719 -0.968
H6 0.000 2.067 0.858
H7 0.000 -2.067 0.858
H8 0.000 1.385 -1.834
H9 0.000 -1.385 -1.834

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.37341.37342.25592.25592.09082.09083.30803.3080
C21.37342.20401.37292.24861.09033.20962.20293.3100
C31.37342.20402.24861.37293.20961.09033.31002.2029
C42.25591.37292.24861.43902.26913.33151.09212.2754
C52.25592.24861.37291.43903.33152.26912.27541.0921
H62.09081.09033.20962.26913.33154.13462.77694.3773
H72.09083.20961.09033.33152.26914.13464.37732.7769
H83.30802.20293.31001.09212.27542.77694.37732.7692
H93.30803.31002.20292.27541.09214.37732.77692.7692

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.462 O1 C2 H6 115.653
O1 C3 C5 110.462 O1 C3 H7 115.653
C2 O1 C3 106.723 C2 C4 C5 106.177
C2 C4 H8 126.302 C3 C5 C4 106.177
C3 C5 H9 126.302 C4 C2 H6 133.885
C4 C5 H9 127.521 C5 C3 H7 133.885
C5 C4 H8 127.521
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.116      
2 C 0.319      
3 C 0.319      
4 C 1.699      
5 C 1.699      
6 H -0.934      
7 H -0.934      
8 H -1.026      
9 H -1.026      


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 -0.593 0.593
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.283 0.000 0.000
y 0.000 -24.692 0.000
z 0.000 0.000 -28.371
Traceless
 xyz
x -5.752 0.000 0.000
y 0.000 5.635 0.000
z 0.000 0.000 0.117
Polar
3z2-r20.233
x2-y2-7.591
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.342 0.000 0.000
y 0.000 9.146 0.000
z 0.000 0.000 8.247


<r2> (average value of r2) Å2
<r2> 82.806
(<r2>)1/2 9.100