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

using model chemistry: B2PLYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-231.106628
Energy at 298.15K-231.113809
HF Energy-230.817226
Nuclear repulsion energy174.386973
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 B2PLYP/cc-pVTZ
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 3245 3113 7.26      
2 A1 3013 2891 7.70      
3 A1 1681 1613 0.01      
4 A1 1540 1478 1.10      
5 A1 1403 1346 3.74      
6 A1 1124 1078 1.18      
7 A1 999 959 8.34      
8 A1 915 878 19.13      
9 A1 756 725 6.97      
10 A2 3031 2908 0.00      
11 A2 1235 1185 0.00      
12 A2 1071 1027 0.00      
13 A2 959 920 0.00      
14 A2 399 383 0.00      
15 B1 3033 2910 88.08      
16 B1 1190 1141 2.57      
17 B1 1037 995 17.36      
18 B1 683 655 35.46      
19 B1 102 98 7.46      
20 B2 3221 3091 2.89      
21 B2 3009 2886 145.52      
22 B2 1529 1467 1.32      
23 B2 1382 1326 3.36      
24 B2 1340 1286 0.06      
25 B2 1117 1072 103.03      
26 B2 927 889 0.02      
27 B2 816 782 2.69      

Unscaled Zero Point Vibrational Energy (zpe) 20378.3 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 19550.9 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 B2PLYP/cc-pVTZ
ABC
0.26827 0.26485 0.14025

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.187
C2 0.000 1.171 0.369
C3 0.000 0.663 -1.041
C4 0.000 -0.663 -1.041
C5 0.000 -1.171 0.369
H6 0.883 1.778 0.594
H7 -0.883 1.778 0.594
H8 -0.883 -1.778 0.594
H9 0.883 -1.778 0.594
H10 0.000 1.309 -1.904
H11 0.000 -1.309 -1.904

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.42792.32402.32401.42792.07192.07192.07192.07193.35683.3568
C21.42791.49812.31312.34121.09501.09503.08613.08612.27753.3641
C32.32401.49811.32672.31312.16622.16623.06753.06751.07842.1533
C42.32402.31311.32671.49813.06753.06752.16622.16622.15331.0784
C51.42792.34122.31311.49813.08613.08611.09501.09503.36412.2775
H62.07191.09502.16623.06753.08611.76613.97033.55582.69054.0680
H72.07191.09502.16623.06753.08611.76613.55583.97032.69054.0680
H82.07193.08613.06752.16621.09503.97033.55581.76614.06802.6905
H92.07193.08613.06752.16621.09503.55583.97031.76614.06802.6905
H103.35682.27751.07842.15333.36412.69052.69054.06804.06802.6183
H113.35683.36412.15331.07842.27754.06804.06802.69052.69052.6183

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 105.143 O1 C2 H6 109.711
O1 C2 H7 109.711 O1 C5 C4 105.143
O1 C5 H8 109.711 O1 C5 H9 109.711
C2 O1 C5 110.130 C2 C3 C4 109.792
C2 C3 H10 123.421 C3 C2 H6 112.377
C3 C2 H7 112.377 C3 C4 C5 109.792
C3 C4 H11 126.788 C4 C3 H10 126.788
C4 C5 H8 112.377 C4 C5 H9 112.377
C5 C4 H11 123.421 H6 C2 H7 107.502
H8 C5 H9 107.502
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.353      
2 C 0.071      
3 C -0.189      
4 C -0.189      
5 C 0.071      
6 H 0.076      
7 H 0.076      
8 H 0.076      
9 H 0.076      
10 H 0.142      
11 H 0.142      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.213 0.000 0.000
y 0.000 8.960 0.000
z 0.000 0.000 6.683


<r2> (average value of r2) Å2
<r2> 94.148
(<r2>)1/2 9.703