return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C4H6O (Furan, 2,3-dihydro-)

using model chemistry: BLYP/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at BLYP/aug-cc-pVDZ
 hartrees
Energy at 0K-231.156858
Energy at 298.15K-231.163806
Nuclear repulsion energy171.864699
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 BLYP/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3177 3171 6.29      
2 A 3152 3146 1.25      
3 A 3037 3031 32.58      
4 A 2983 2977 55.78      
5 A 2969 2963 17.76      
6 A 2937 2932 47.98      
7 A 1607 1604 62.66      
8 A 1465 1462 0.63      
9 A 1445 1443 0.36      
10 A 1341 1338 3.54      
11 A 1266 1264 0.99      
12 A 1245 1242 8.57      
13 A 1198 1196 4.84      
14 A 1155 1153 3.72      
15 A 1110 1108 38.83      
16 A 1037 1035 11.18      
17 A 1024 1022 57.37      
18 A 963 962 2.53      
19 A 897 896 23.45      
20 A 864 862 30.70      
21 A 852 850 7.64      
22 A 809 807 6.70      
23 A 803 801 3.93      
24 A 671 670 8.64      
25 A 661 660 38.30      
26 A 440 440 18.64      
27 A 66 65 0.77      

Unscaled Zero Point Vibrational Energy (zpe) 19586.3 cm-1
Scaled (by 0.9981) Zero Point Vibrational Energy (zpe) 19549.1 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 BLYP/aug-cc-pVDZ
ABC
0.26345 0.25308 0.13609

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.964 2.140 0.061
C2 0.529 1.138 0.032
H3 2.299 -0.198 0.014
C4 1.220 -0.019 0.007
O5 0.451 -1.170 -0.050
H6 -1.410 1.184 -0.994
H7 -1.541 1.285 0.780
C8 -0.963 0.826 -0.045
H9 -1.512 -1.232 -0.763
H10 -1.341 -1.097 1.025
C11 -0.964 -0.732 0.052

Atom - Atom Distances (Å)
  H1 C2 H3 C4 O5 H6 H7 C8 H9 H10 C11
H11.09252.69242.17493.35072.76792.74282.33454.26394.08853.4585
C21.09252.21751.34802.31042.19412.20601.52603.22753.07842.3926
H32.69242.21751.09402.08864.08454.18683.41914.02493.88283.3063
C42.17491.34801.09401.38443.06033.14942.34093.08662.95842.2970
O53.35072.31042.08861.38443.14573.26822.44572.09012.09101.4848
H62.76792.19414.08453.06033.14571.78141.10892.42933.04662.2277
H72.74282.20604.18683.14943.26821.78141.10662.95242.40222.2201
C82.33451.52603.41912.34092.44571.10891.10662.24812.23211.5605
H94.26393.22754.02493.08662.09012.42932.95242.24811.80161.1027
H104.08853.07843.88282.95842.09103.04662.40222.23211.80161.1056
C113.45852.39263.30632.29701.48482.22772.22011.56051.10271.1056

picture of Furan, 2,3-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 125.725 H1 C2 C8 125.316
C2 C4 H3 130.193 C2 C4 O5 115.459
C2 C8 H6 111.772 C2 C8 H7 112.883
C2 C8 C11 101.638 H3 C4 O5 114.345
C4 C2 C8 108.918 C4 O5 C11 106.321
O5 C11 C8 106.832 O5 C11 H9 106.831
O5 C11 H10 106.739 H6 C8 H7 107.042
H6 C8 C11 112.026 H7 C8 C11 111.565
C8 C11 H9 114.058 C8 C11 H10 112.582
H9 C11 H10 109.345
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H -0.630      
2 C 0.917      
3 H -0.613      
4 C 0.461      
5 O -0.491      
6 H -0.461      
7 H -0.443      
8 C 0.978      
9 H -0.534      
10 H -0.529      
11 C 1.346      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.910 0.864 0.056 1.256
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.903 1.187 0.022
y 1.187 -32.387 -0.120
z 0.022 -0.120 -31.876
Traceless
 xyz
x 4.228 1.187 0.022
y 1.187 -2.498 -0.120
z 0.022 -0.120 -1.731
Polar
3z2-r2-3.462
x2-y24.484
xy1.187
xz0.022
yz-0.120


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.850 -0.162 0.028
y -0.162 8.859 -0.014
z 0.028 -0.014 6.389


<r2> (average value of r2) Å2
<r2> 96.917
(<r2>)1/2 9.845