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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-228.985478
Energy at 298.15K-228.992532
HF Energy-228.509272
Nuclear repulsion energy170.585095
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 MP2/3-21G
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 3305 3155 5.08      
2 A 3275 3126 1.02      
3 A 3186 3041 36.01      
4 A 3143 3000 6.11      
5 A 3127 2985 33.34      
6 A 3103 2962 23.16      
7 A 1644 1570 23.78      
8 A 1609 1535 0.15      
9 A 1587 1515 1.25      
10 A 1415 1351 1.62      
11 A 1352 1290 9.12      
12 A 1324 1264 14.68      
13 A 1301 1242 0.84      
14 A 1222 1166 1.70      
15 A 1200 1145 15.62      
16 A 1105 1054 0.15      
17 A 1037 990 80.58      
18 A 976 932 1.73      
19 A 919 877 4.06      
20 A 909 868 14.85      
21 A 889 848 27.11      
22 A 863 823 0.82      
23 A 829 791 1.07      
24 A 737 703 42.83      
25 A 699 668 3.34      
26 A 447 427 27.00      
27 A 44 42 2.15      

Unscaled Zero Point Vibrational Energy (zpe) 20622.1 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 19683.8 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 MP2/3-21G
ABC
0.25887 0.24899 0.13338

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.009 2.111 0.001
C2 0.566 1.127 0.001
H3 2.293 -0.232 0.000
C4 1.231 -0.037 0.000
O5 0.431 -1.206 -0.001
H6 -1.434 1.273 -0.892
H7 -1.436 1.275 0.888
C8 -0.948 0.863 -0.001
H9 -1.482 -1.112 -0.894
H10 -1.478 -1.109 0.899
C11 -1.001 -0.713 0.001

Atom - Atom Distances (Å)
  H1 C2 H3 C4 O5 H6 H7 C8 H9 H10 C11
H11.07942.67212.16033.36752.73272.73182.32144.17114.16743.4667
C21.07942.19831.34142.33732.19422.19431.53643.16343.16052.4168
H32.67212.19831.08012.10194.11714.11893.42103.97803.97523.3291
C42.16031.34141.08011.41623.10043.10202.35733.05153.04902.3317
O53.36752.33732.10191.41623.22743.22962.48602.11262.11271.5141
H62.73272.19424.11713.10043.22741.78011.09472.38602.98122.2204
H72.73182.19434.11893.10203.22961.78011.09472.97952.38522.2202
C82.32141.53643.42102.35732.48601.09471.09472.23232.23191.5767
H94.17113.16343.97803.05152.11262.38602.97952.23231.79281.0915
H104.16743.16053.97523.04902.11272.98122.38522.23191.79281.0915
C113.46672.41683.32912.33171.51412.22042.22021.57671.09151.0915

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 126.008 H1 C2 C8 124.180
C2 C4 H3 130.099 C2 C4 O5 115.872
C2 C8 H6 111.914 C2 C8 H7 111.925
C2 C8 C11 101.845 H3 C4 O5 114.029
C4 C2 C8 109.812 C4 O5 C11 105.399
O5 C11 C8 107.071 O5 C11 H9 107.234
O5 C11 H10 107.236 H6 C8 H7 108.782
H6 C8 C11 111.152 H7 C8 C11 111.133
C8 C11 H9 112.295 C8 C11 H10 112.262
H9 C11 H10 110.426
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.193     0.146
2 C -0.277     -0.351
3 H 0.219     0.142
4 C 0.116     0.056
5 O -0.491     -0.336
6 H 0.205     -0.012
7 H 0.205     -0.012
8 C -0.438     0.193
9 H 0.202     0.056
10 H 0.202     0.056
11 C -0.138     0.063


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.831 1.255 0.003 1.505
CHELPG        
AIM        
ESP -0.856 1.197 0.002 1.472


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.717 1.428 0.002
y 1.428 -32.450 -0.001
z 0.002 -0.001 -31.731
Traceless
 xyz
x 5.374 1.428 0.002
y 1.428 -3.226 -0.001
z 0.002 -0.001 -2.148
Polar
3z2-r2-4.296
x2-y25.733
xy1.428
xz0.002
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.431 -0.078 0.001
y -0.078 6.423 0.000
z 0.001 0.000 3.655


<r2> (average value of r2) Å2
<r2> 97.676
(<r2>)1/2 9.883