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All results from a given calculation for C4H4O (Furan)

using model chemistry: mPW1PW91/aug-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 mPW1PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-230.050349
Energy at 298.15K 
HF Energy-230.050349
Nuclear repulsion energy161.812681
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/aug-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 3304 3166 0.02 209.19 0.11 0.20
2 A1 3277 3140 0.05 29.68 0.31 0.47
3 A1 1532 1468 21.08 64.87 0.10 0.18
4 A1 1432 1372 2.61 20.38 0.30 0.46
5 A1 1177 1127 0.64 35.07 0.12 0.21
6 A1 1108 1062 15.13 5.80 0.09 0.17
7 A1 1025 982 40.52 1.06 0.28 0.44
8 A1 891 854 14.09 0.14 0.64 0.78
9 A2 903 865 0.00 0.60 0.75 0.86
10 A2 751 719 0.00 1.49 0.75 0.86
11 A2 621 595 0.00 0.05 0.75 0.86
12 B1 873 837 0.29 1.79 0.75 0.86
13 B1 770 738 110.88 0.03 0.75 0.86
14 B1 631 605 23.47 0.81 0.75 0.86
15 B2 3297 3159 0.18 10.43 0.75 0.86
16 B2 3266 3130 1.99 94.27 0.75 0.86
17 B2 1612 1545 0.01 0.15 0.75 0.86
18 B2 1294 1240 0.35 0.53 0.75 0.86
19 B2 1229 1178 18.29 0.07 0.75 0.86
20 B2 1073 1028 2.43 5.14 0.75 0.86
21 B2 896 858 0.89 2.34 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15481.9 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 14833.2 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/aug-cc-pVTZ
ABC
0.31965 0.31310 0.15817

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.151
C2 0.000 1.087 0.346
C3 0.000 -1.087 0.346
C4 0.000 0.714 -0.953
C5 0.000 -0.714 -0.953
H6 0.000 2.041 0.841
H7 0.000 -2.041 0.841
H8 0.000 1.370 -1.806
H9 0.000 -1.370 -1.806

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35231.35232.22242.22242.06422.06423.25933.2593
C21.35232.17321.35212.22041.07503.16632.17103.2660
C31.35232.17322.22041.35213.16631.07503.26602.1710
C42.22241.35212.22041.42742.23203.28751.07602.2513
C52.22242.22041.35211.42743.28752.23202.25131.0760
H62.06421.07503.16632.23203.28754.08162.73124.3175
H72.06423.16631.07503.28752.23204.08164.31752.7312
H83.25932.17103.26601.07602.25132.73124.31752.7396
H93.25933.26602.17102.25131.07604.31752.73122.7396

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.525 O1 C2 H6 116.050
O1 C3 C5 110.525 O1 C3 H7 116.050
C2 O1 C3 106.931 C2 C4 C5 106.010
C2 C4 H8 126.420 C3 C5 C4 106.010
C3 C5 H9 126.420 C4 C2 H6 133.426
C4 C5 H9 127.570 C5 C3 H7 133.426
C5 C4 H8 127.570
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.264      
2 C -0.314      
3 C -0.314      
4 C -0.423      
5 C -0.423      
6 H 0.543      
7 H 0.543      
8 H 0.326      
9 H 0.326      


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 -0.613 0.613
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.851 0.000 0.000
y 0.000 -24.251 0.000
z 0.000 0.000 -27.939
Traceless
 xyz
x -5.756 0.000 0.000
y 0.000 5.644 0.000
z 0.000 0.000 0.113
Polar
3z2-r20.225
x2-y2-7.600
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.067 0.000 0.000
y 0.000 8.504 0.000
z 0.000 0.000 7.758


<r2> (average value of r2) Å2
<r2> 80.749
(<r2>)1/2 8.986