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All results from a given calculation for C4H6O (Furan, 2,5-dihydro-)

using model chemistry: B3LYP/CEP-31G

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/CEP-31G
 hartrees
Energy at 0K-42.074020
Energy at 298.15K-42.081116
Nuclear repulsion energy91.801205
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/CEP-31G
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 3241 3138 17.28      
2 A1 3026 2931 10.31      
3 A1 1671 1618 0.09      
4 A1 1523 1475 1.60      
5 A1 1367 1324 0.35      
6 A1 1115 1080 1.73      
7 A1 985 954 9.24      
8 A1 847 820 17.14      
9 A1 726 703 5.02      
10 A2 3063 2966 0.00      
11 A2 1176 1139 0.00      
12 A2 1051 1018 0.00      
13 A2 962 931 0.00      
14 A2 374 362 0.00      
15 B1 3069 2972 144.84      
16 B1 1135 1100 10.70      
17 B1 1016 984 18.77      
18 B1 697 675 72.18      
19 B1 128 124 19.88      
20 B2 3202 3101 4.57      
21 B2 3020 2925 174.20      
22 B2 1513 1466 0.00      
23 B2 1354 1311 2.84      
24 B2 1317 1275 0.47      
25 B2 1059 1026 74.84      
26 B2 918 889 0.32      
27 B2 786 762 0.70      

Unscaled Zero Point Vibrational Energy (zpe) 20169.2 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 19531.9 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/CEP-31G
ABC
0.25322 0.25189 0.13274

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.226
C2 0.000 1.213 0.371
C3 0.000 0.682 -1.066
C4 0.000 -0.682 -1.066
C5 0.000 -1.213 0.371
H6 0.898 1.815 0.606
H7 -0.898 1.815 0.606
H8 -0.898 -1.815 0.606
H9 0.898 -1.815 0.606
H10 0.000 1.332 -1.943
H11 0.000 -1.332 -1.943

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.48372.39132.39131.48372.11752.11752.11752.11753.43673.4367
C21.48371.53192.37832.42551.10651.10653.16673.16672.31643.4390
C32.39131.53191.36452.37832.21052.21053.13673.13671.09072.1964
C42.39132.37831.36451.53193.13673.13672.21052.21052.19641.0907
C51.48372.42552.37831.53193.16673.16671.10651.10653.43902.3164
H62.11751.10652.21053.13673.16671.79624.04973.62962.74514.1477
H72.11751.10652.21053.13673.16671.79623.62964.04972.74514.1477
H82.11753.16673.13672.21051.10654.04973.62961.79624.14772.7451
H92.11753.16673.13672.21051.10653.62964.04971.79624.14772.7451
H103.43672.31641.09072.19643.43902.74512.74514.14774.14772.6636
H113.43673.43902.19641.09072.31644.14774.14772.74512.74512.6636

picture of Furan, 2,5-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 104.917 O1 C2 H6 108.797
O1 C2 H7 108.797 O1 C5 C4 104.917
O1 C5 H8 108.797 O1 C5 H9 108.797
C2 O1 C5 109.644 C2 C3 C4 110.260
C2 C3 H10 123.191 C3 C2 H6 112.824
C3 C2 H7 112.824 C3 C4 C5 110.260
C3 C4 H11 126.549 C4 C3 H10 126.549
C4 C5 H8 112.824 C4 C5 H9 112.824
C5 C4 H11 123.191 H6 C2 H7 108.511
H8 C5 H9 108.511
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.272      
2 C -0.232      
3 C -0.234      
4 C -0.234      
5 C -0.232      
6 H 0.159      
7 H 0.159      
8 H 0.159      
9 H 0.159      
10 H 0.284      
11 H 0.284      


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 -2.276 2.276
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.980 0.000 0.000
y 0.000 -24.572 0.000
z 0.000 0.000 -33.111
Traceless
 xyz
x -2.138 0.000 0.000
y 0.000 7.474 0.000
z 0.000 0.000 -5.335
Polar
3z2-r2-10.671
x2-y2-6.408
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.062 0.000 0.000
y 0.000 8.498 0.000
z 0.000 0.000 5.928


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000