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

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-229.667633
Energy at 298.15K-229.674587
Nuclear repulsion energy170.666932
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 PBEPBE/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 A 3218 3188 4.19      
2 A 3185 3156 1.76      
3 A 3067 3040 33.30      
4 A 3014 2986 38.16      
5 A 3012 2984 9.33      
6 A 2979 2952 32.91      
7 A 1622 1608 34.55      
8 A 1517 1503 0.76      
9 A 1493 1480 0.26      
10 A 1350 1338 2.59      
11 A 1282 1270 8.72      
12 A 1261 1249 16.52      
13 A 1241 1229 0.59      
14 A 1168 1157 1.24      
15 A 1141 1131 22.69      
16 A 1041 1031 0.14      
17 A 1020 1011 61.91      
18 A 968 959 0.44      
19 A 899 891 23.94      
20 A 892 884 5.29      
21 A 864 856 22.45      
22 A 815 808 1.37      
23 A 814 807 0.02      
24 A 696 689 49.75      
25 A 682 675 2.41      
26 A 440 436 26.86      
27 A 51 50 1.31      

Unscaled Zero Point Vibrational Energy (zpe) 19864.2 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 19683.5 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 PBEPBE/3-21G
ABC
0.26008 0.24891 0.13378

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.903 2.166 0.000
C2 -0.508 1.154 0.000
H3 -2.305 -0.126 0.000
C4 -1.226 0.018 0.000
O5 -0.490 -1.182 -0.000
H6 1.499 1.207 0.896
H7 1.498 1.207 -0.897
C8 0.985 0.813 -0.000
H9 1.424 -1.186 0.904
H10 1.424 -1.186 -0.903
C11 0.963 -0.757 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 O5 H6 H7 C8 H9 H10 C11
H11.08652.68612.17223.37302.73712.73712.32284.17924.17963.4676
C21.08652.20601.34412.33582.19802.19801.53113.16573.16612.4110
H32.68612.20601.08832.09914.12864.12833.42103.97993.98033.3278
C42.17221.34411.08831.40693.10493.10472.34963.04703.04742.3216
O53.37302.33582.09911.40693.23533.23502.48142.11672.11671.5142
H62.73712.19804.12863.10493.23531.79271.10562.39442.99532.2242
H72.73712.19804.12833.10473.23501.79271.10562.99552.39452.2242
C82.32281.53113.42102.34962.48141.10561.10562.23752.23761.5702
H94.17923.16573.97993.04702.11672.39442.99552.23751.80681.1014
H104.17963.16613.98033.04742.11672.99532.39452.23761.80681.1014
C113.46762.41103.32782.32161.51422.22422.22421.57021.10141.1014

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 126.351 H1 C2 C8 124.211
C2 C4 H3 129.870 C2 C4 O5 116.198
C2 C8 H6 111.941 C2 C8 H7 111.937
C2 C8 C11 102.046 H3 C4 O5 113.932
C4 C2 C8 109.438 C4 O5 C11 105.207
O5 C11 C8 107.111 O5 C11 H9 106.989
O5 C11 H10 106.989 H6 C8 H7 108.345
H6 C8 C11 111.265 H7 C8 C11 111.267
C8 C11 H9 112.578 C8 C11 H10 112.584
H9 C11 H10 110.224
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.190      
2 C -0.264      
3 H 0.223      
4 C 0.070      
5 O -0.430      
6 H 0.221      
7 H 0.221      
8 C -0.467      
9 H 0.225      
10 H 0.225      
11 C -0.215      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.933 0.924 0.000 1.313
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.228 -1.519 -0.000
y -1.519 -31.160 -0.000
z -0.000 -0.000 -31.182
Traceless
 xyz
x 4.943 -1.519 -0.000
y -1.519 -2.455 -0.000
z -0.000 -0.000 -2.489
Polar
3z2-r2-4.978
x2-y24.932
xy-1.519
xz-0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.815 0.105 -0.000
y 0.105 6.802 -0.000
z -0.000 -0.000 3.802


<r2> (average value of r2) Å2
<r2> 97.224
(<r2>)1/2 9.860