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

using model chemistry: B3LYP/3-21G

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/3-21G
 hartrees
Energy at 0K-229.946597
Energy at 298.15K-229.953768
Nuclear repulsion energy171.596328
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/3-21G
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 3253 3139 6.76      
2 A1 3017 2911 9.77      
3 A1 1691 1631 0.37      
4 A1 1583 1527 0.35      
5 A1 1376 1327 0.01      
6 A1 1156 1116 1.51      
7 A1 969 935 6.43      
8 A1 858 828 8.84      
9 A1 739 713 6.00      
10 A2 3032 2926 0.00      
11 A2 1214 1172 0.00      
12 A2 1081 1043 0.00      
13 A2 976 942 0.00      
14 A2 391 377 0.00      
15 B1 3038 2931 100.52      
16 B1 1171 1130 10.31      
17 B1 1021 985 9.82      
18 B1 700 675 42.02      
19 B1 131 126 9.87      
20 B2 3226 3113 1.40      
21 B2 3010 2904 117.20      
22 B2 1569 1514 2.85      
23 B2 1373 1325 3.26      
24 B2 1333 1286 0.75      
25 B2 1054 1017 71.81      
26 B2 898 867 0.05      
27 B2 814 786 3.95      

Unscaled Zero Point Vibrational Energy (zpe) 20335.6 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 19621.8 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 B3LYP/3-21G
ABC
0.25977 0.25583 0.13553

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.226
C2 0.000 1.198 0.366
C3 0.000 0.665 -1.055
C4 0.000 -0.665 -1.055
C5 0.000 -1.198 0.366
H6 0.892 1.805 0.576
H7 -0.892 1.805 0.576
H8 -0.892 -1.805 0.576
H9 0.892 -1.805 0.576
H10 0.000 1.313 -1.921
H11 0.000 -1.313 -1.921

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.47532.37592.37591.47532.11582.11582.11582.11583.40983.4098
C21.47531.51692.34302.39641.09881.09883.13993.13992.28913.3959
C32.37591.51691.33072.34302.17982.17983.09123.09121.08142.1595
C42.37592.34301.33071.51693.09123.09122.17982.17982.15951.0814
C51.47532.39642.34301.51693.13993.13991.09881.09883.39592.2891
H62.11581.09882.17983.09123.13991.78334.02663.61022.69614.0924
H72.11581.09882.17983.09123.13991.78333.61024.02662.69614.0924
H82.11583.13993.09122.17981.09884.02663.61021.78334.09242.6961
H92.11583.13993.09122.17981.09883.61024.02661.78334.09242.6961
H103.40982.28911.08142.15953.39592.69612.69614.09244.09242.6257
H113.40983.39592.15951.08142.28914.09244.09242.69612.69612.6257

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 105.124 O1 C2 H6 109.696
O1 C2 H7 109.696 O1 C5 C4 105.124
O1 C5 H8 109.696 O1 C5 H9 109.696
C2 O1 C5 108.620 C2 C3 C4 110.566
C2 C3 H10 122.650 C3 C2 H6 111.901
C3 C2 H7 111.901 C3 C4 C5 110.566
C3 C4 H11 126.784 C4 C3 H10 126.784
C4 C5 H8 111.901 C4 C5 H9 111.901
C5 C4 H11 122.650 H6 C2 H7 108.473
H8 C5 H9 108.473
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.481      
2 C -0.148      
3 C -0.202      
4 C -0.202      
5 C -0.148      
6 H 0.199      
7 H 0.199      
8 H 0.199      
9 H 0.199      
10 H 0.192      
11 H 0.192      


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 -1.920 1.920
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.187 0.000 0.000
y 0.000 -25.355 0.000
z 0.000 0.000 -32.143
Traceless
 xyz
x -2.438 0.000 0.000
y 0.000 6.310 0.000
z 0.000 0.000 -3.872
Polar
3z2-r2-7.743
x2-y2-5.832
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.835 0.000 0.000
y 0.000 8.173 0.000
z 0.000 0.000 5.432


<r2> (average value of r2) Å2
<r2> 96.347
(<r2>)1/2 9.816