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

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-231.250324
Energy at 298.15K-231.257475
HF Energy-231.250324
Nuclear repulsion energy174.048970
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 TPSSh/6-31G(2df,p)
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 3230 3117 12.90      
2 A1 2974 2870 11.83      
3 A1 1689 1630 0.00      
4 A1 1535 1482 0.52      
5 A1 1396 1347 6.29      
6 A1 1121 1081 1.24      
7 A1 993 959 6.42      
8 A1 915 883 15.53      
9 A1 746 720 6.55      
10 A2 2984 2880 0.00      
11 A2 1225 1182 0.00      
12 A2 1056 1019 0.00      
13 A2 957 923 0.00      
14 A2 392 378 0.00      
15 B1 2987 2883 116.65      
16 B1 1172 1131 3.23      
17 B1 1028 992 16.10      
18 B1 686 662 25.02      
19 B1 109 105 5.94      
20 B2 3204 3092 4.61      
21 B2 2966 2862 166.64      
22 B2 1522 1469 4.69      
23 B2 1372 1324 2.29      
24 B2 1326 1280 0.22      
25 B2 1114 1075 99.81      
26 B2 922 890 0.01      
27 B2 804 776 3.07      

Unscaled Zero Point Vibrational Energy (zpe) 20212.8 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 19505.4 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 TPSSh/6-31G(2df,p)
ABC
0.26781 0.26341 0.13978

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.189
C2 0.000 1.170 0.370
C3 0.000 0.665 -1.044
C4 0.000 -0.665 -1.044
C5 0.000 -1.170 0.370
H6 0.887 1.782 0.600
H7 -0.887 1.782 0.600
H8 -0.887 -1.782 0.600
H9 0.887 -1.782 0.600
H10 0.000 1.318 -1.909
H11 0.000 -1.318 -1.909

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.42802.32982.32981.42802.07602.07602.07602.07603.36603.3660
C21.42801.50202.31692.34031.10181.10183.09123.09122.28363.3738
C32.32981.50201.32982.31692.17672.17673.07863.07861.08322.1629
C42.32982.31691.32981.50203.07863.07862.17672.17672.16291.0832
C51.42802.34032.31691.50203.09123.09121.10181.10183.37382.2836
H62.07601.10182.17673.07863.09121.77373.98143.56442.70094.0852
H72.07601.10182.17673.07863.09121.77373.56443.98142.70094.0852
H82.07603.09123.07862.17671.10183.98143.56441.77374.08522.7009
H92.07603.09123.07862.17671.10183.56443.98141.77374.08522.7009
H103.36602.28361.08322.16293.37382.70092.70094.08524.08522.6354
H113.36603.37382.16291.08322.28364.08524.08522.70092.70092.6354

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 105.316 O1 C2 H6 109.618
O1 C2 H7 109.618 O1 C5 C4 105.316
O1 C5 H8 109.618 O1 C5 H9 109.618
C2 O1 C5 110.054 C2 C3 C4 109.657
C2 C3 H10 123.282 C3 C2 H6 112.530
C3 C2 H7 112.530 C3 C4 C5 109.657
C3 C4 H11 127.061 C4 C3 H10 127.061
C4 C5 H8 112.530 C4 C5 H9 112.530
C5 C4 H11 123.282 H6 C2 H7 107.209
H8 C5 H9 107.209
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability