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

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-230.653414
Energy at 298.15K-230.660704
HF Energy-229.813032
Nuclear repulsion energy174.768913
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 MP2/6-31G(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 A 3322 3137 2.56      
2 A 3286 3103 2.63      
3 A 3196 3019 21.78      
4 A 3166 2990 12.48      
5 A 3103 2931 37.33      
6 A 3099 2927 25.96      
7 A 1674 1581 43.88      
8 A 1539 1454 0.34      
9 A 1516 1432 0.35      
10 A 1422 1343 2.62      
11 A 1345 1271 2.07      
12 A 1315 1242 5.02      
13 A 1261 1191 13.47      
14 A 1231 1163 19.45      
15 A 1180 1115 50.94      
16 A 1108 1047 29.12      
17 A 1085 1025 10.77      
18 A 1030 973 7.43      
19 A 969 915 15.37      
20 A 962 908 28.70      
21 A 923 872 4.03      
22 A 864 816 4.09      
23 A 840 793 6.61      
24 A 730 689 30.62      
25 A 663 626 0.58      
26 A 455 430 19.35      
27 A 161 152 1.56      

Unscaled Zero Point Vibrational Energy (zpe) 20721.6 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 19571.5 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 MP2/6-31G(2df,p)
ABC
0.27329 0.26030 0.14195

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.800 2.171 0.132
C2 0.435 1.159 0.072
H3 2.267 -0.048 0.033
C4 1.192 0.060 0.013
O5 0.512 -1.116 -0.112
H6 -1.373 0.982 -1.104
H7 -1.688 1.186 0.621
C8 -1.005 0.737 -0.102
H9 -1.479 -1.388 -0.551
H10 -1.108 -1.038 1.156
C11 -0.874 -0.779 0.119

Atom - Atom Distances (Å)
  H1 C2 H3 C4 O5 H6 H7 C8 H9 H10 C11
H11.07762.66172.15073.30892.76792.71972.31704.28083.87143.3919
C21.07762.19371.33572.28382.16412.19261.51083.24632.89532.3391
H32.66172.19371.08062.05973.94984.18393.36764.02133.69233.2259
C42.15071.33571.08061.36412.94583.15092.30203.09012.79282.2320
O53.30892.28382.05971.36412.99013.26742.39532.05722.05891.4449
H62.76792.16413.94982.94582.99011.76531.09472.43583.04262.2014
H72.71972.19264.18393.15093.26741.76531.09102.83582.35952.1854
C82.31701.51083.36762.30202.39531.09471.09102.22302.17831.5380
H94.28083.24634.02133.09012.05722.43582.83582.22301.78161.0890
H103.87142.89533.69232.79282.05893.04262.35952.17831.78161.0943
C113.39192.33913.22592.23201.44492.20142.18541.53801.08901.0943

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 125.707 H1 C2 C8 126.240
C2 C4 H3 130.135 C2 C4 O5 115.538
C2 C8 H6 111.315 C2 C8 H7 113.886
C2 C8 C11 100.204 H3 C4 O5 114.317
C4 C2 C8 107.783 C4 O5 C11 105.196
O5 C11 C8 106.796 O5 C11 H9 107.732
O5 C11 H10 107.553 H6 C8 H7 107.732
H6 C8 C11 112.381 H7 C8 C11 111.316
C8 C11 H9 114.526 C8 C11 H10 110.561
H9 C11 H10 109.382
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability