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

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-231.159678
Energy at 298.15K-231.166855
Nuclear repulsion energy174.651735
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 mPW1PW91/6-31G*
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 3276 3107 8.76      
2 A1 3026 2869 10.61      
3 A1 1731 1641 0.08      
4 A1 1564 1483 0.85      
5 A1 1426 1352 6.56      
6 A1 1135 1076 1.41      
7 A1 1015 963 7.84      
8 A1 951 901 18.57      
9 A1 765 726 7.30      
10 A2 3042 2885 0.00      
11 A2 1246 1181 0.00      
12 A2 1077 1021 0.00      
13 A2 959 910 0.00      
14 A2 392 372 0.00      
15 B1 3046 2888 116.62      
16 B1 1195 1134 3.19      
17 B1 1044 990 16.77      
18 B1 687 651 32.44      
19 B1 108 103 7.82      
20 B2 3252 3084 3.03      
21 B2 3018 2862 155.96      
22 B2 1551 1470 3.63      
23 B2 1399 1327 1.27      
24 B2 1345 1275 0.02      
25 B2 1171 1111 106.66      
26 B2 942 893 0.08      
27 B2 819 777 2.10      

Unscaled Zero Point Vibrational Energy (zpe) 20590.8 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 19526.2 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 mPW1PW91/6-31G*
ABC
0.26965 0.26536 0.14081

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.181
C2 0.000 1.164 0.371
C3 0.000 0.664 -1.041
C4 0.000 -0.664 -1.041
C5 0.000 -1.164 0.371
H6 0.885 1.778 0.599
H7 -0.885 1.778 0.599
H8 -0.885 -1.778 0.599
H9 0.885 -1.778 0.599
H10 0.000 1.316 -1.906
H11 0.000 -1.316 -1.906

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.41862.31922.31921.41862.06962.06962.06962.06963.35623.3562
C21.41861.49802.31022.32901.10071.10073.08083.08082.28233.3672
C32.31921.49801.32812.31022.17072.17073.07143.07141.08342.1608
C42.31922.31021.32811.49803.07143.07142.17072.17072.16081.0834
C51.41862.32902.31021.49803.08083.08081.10071.10073.36722.2823
H62.06961.10072.17073.07143.08081.77073.97183.55522.69664.0777
H72.06961.10072.17073.07143.08081.77073.55523.97182.69664.0777
H82.06963.08083.07142.17071.10073.97183.55521.77074.07772.6966
H92.06963.08083.07142.17071.10073.55523.97181.77074.07772.6966
H103.35622.28231.08342.16083.36722.69662.69664.07774.07772.6317
H113.35623.36722.16081.08342.28234.07774.07772.69662.69662.6317

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 105.314 O1 C2 H6 109.824
O1 C2 H7 109.824 O1 C5 C4 105.314
O1 C5 H8 109.824 O1 C5 H9 109.824
C2 O1 C5 110.340 C2 C3 C4 109.516
C2 C3 H10 123.496 C3 C2 H6 112.397
C3 C2 H7 112.397 C3 C4 C5 109.516
C3 C4 H11 126.988 C4 C3 H10 126.988
C4 C5 H8 112.397 C4 C5 H9 112.397
C5 C4 H11 123.496 H6 C2 H7 107.091
H8 C5 H9 107.091
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.505      
2 C -0.078      
3 C -0.180      
4 C -0.180      
5 C -0.078      
6 H 0.167      
7 H 0.167      
8 H 0.167      
9 H 0.167      
10 H 0.176      
11 H 0.176      


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 -1.713 1.713
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.654 0.000 0.000
y 0.000 -25.506 0.000
z 0.000 0.000 -31.373
Traceless
 xyz
x -2.214 0.000 0.000
y 0.000 5.507 0.000
z 0.000 0.000 -3.293
Polar
3z2-r2-6.586
x2-y2-5.147
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.336 0.000 0.000
y 0.000 8.381 0.000
z 0.000 0.000 5.796


<r2> (average value of r2) Å2
<r2> 93.543
(<r2>)1/2 9.672