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

using model chemistry: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-231.063267
Energy at 298.15K-231.070485
Nuclear repulsion energy172.378341
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 B3PW91/6-31G
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 3274 3136 10.05      
2 A1 3035 2906 9.39      
3 A1 1710 1637 0.22      
4 A1 1561 1495 0.96      
5 A1 1388 1329 0.10      
6 A1 1152 1103 1.69      
7 A1 1011 969 5.92      
8 A1 870 833 12.06      
9 A1 752 720 8.28      
10 A2 3063 2933 0.00      
11 A2 1212 1161 0.00      
12 A2 1084 1038 0.00      
13 A2 978 936 0.00      
14 A2 400 383 0.00      
15 B1 3068 2938 101.67      
16 B1 1166 1117 7.75      
17 B1 1038 994 13.18      
18 B1 704 674 44.25      
19 B1 138 132 13.60      
20 B2 3246 3109 2.30      
21 B2 3028 2900 125.67      
22 B2 1552 1486 0.70      
23 B2 1386 1328 2.06      
24 B2 1348 1291 0.32      
25 B2 1076 1031 77.14      
26 B2 939 900 1.24      
27 B2 813 779 3.45      

Unscaled Zero Point Vibrational Energy (zpe) 20495.7 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 19628.8 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 B3PW91/6-31G
ABC
0.26058 0.26027 0.13696

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.207
C2 0.000 1.196 0.362
C3 0.000 0.668 -1.046
C4 0.000 -0.668 -1.046
C5 0.000 -1.196 0.362
H6 0.889 1.799 0.594
H7 -0.889 1.799 0.594
H8 -0.889 -1.799 0.594
H9 0.889 -1.799 0.594
H10 0.000 1.312 -1.917
H11 0.000 -1.312 -1.917

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.46462.35002.35001.46462.09862.09862.09862.09863.38853.3885
C21.46461.50372.33652.39261.09891.09893.13323.13322.28233.3890
C32.35001.50371.33662.33652.18102.18103.09303.09301.08312.1632
C42.35002.33651.33661.50373.09303.09302.18102.18102.16321.0831
C51.46462.39262.33651.50373.13323.13321.09891.09893.38902.2823
H62.09861.09892.18103.09303.13321.77834.01383.59832.70774.0953
H72.09861.09892.18103.09303.13321.77833.59834.01382.70774.0953
H82.09863.13323.09302.18101.09894.01383.59831.77834.09532.7077
H92.09863.13323.09302.18101.09893.59834.01381.77834.09532.7077
H103.38852.28231.08312.16323.38902.70772.70774.09534.09532.6233
H113.38853.38902.16321.08312.28234.09534.09532.70772.70772.6233

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 104.679 O1 C2 H6 109.068
O1 C2 H7 109.068 O1 C5 C4 104.679
O1 C5 H8 109.068 O1 C5 H9 109.068
C2 O1 C5 109.532 C2 C3 C4 110.555
C2 C3 H10 123.006 C3 C2 H6 112.938
C3 C2 H7 112.938 C3 C4 C5 110.555
C3 C4 H11 126.439 C4 C3 H10 126.439
C4 C5 H8 112.938 C4 C5 H9 112.938
C5 C4 H11 123.006 H6 C2 H7 108.021
H8 C5 H9 108.021
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.541      
2 C -0.090      
3 C -0.161      
4 C -0.161      
5 C -0.090      
6 H 0.174      
7 H 0.174      
8 H 0.174      
9 H 0.174      
10 H 0.173      
11 H 0.173      


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 -2.134 2.134
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.855 0.000 0.000
y 0.000 -24.928 0.000
z 0.000 0.000 -32.475
Traceless
 xyz
x -2.154 0.000 0.000
y 0.000 6.737 0.000
z 0.000 0.000 -4.583
Polar
3z2-r2-9.166
x2-y2-5.927
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.136 0.000 0.000
y 0.000 8.493 0.000
z 0.000 0.000 5.734


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