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

using model chemistry: B3LYP/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/CEP-31G*
 hartrees
Energy at 0K-42.138106
Energy at 298.15K-42.145145
Nuclear repulsion energy92.853511
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 B3LYP/CEP-31G*
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 3223 3113 11.77      
2 A1 3001 2898 10.19      
3 A1 1693 1634 0.29      
4 A1 1524 1471 1.38      
5 A1 1394 1346 7.71      
6 A1 1097 1060 1.14      
7 A1 986 952 9.94      
8 A1 906 875 23.48      
9 A1 736 711 5.45      
10 A2 3020 2917 0.00      
11 A2 1208 1166 0.00      
12 A2 1038 1003 0.00      
13 A2 940 908 0.00      
14 A2 363 351 0.00      
15 B1 3025 2921 142.09      
16 B1 1163 1123 6.20      
17 B1 1014 979 23.28      
18 B1 678 655 57.36      
19 B1 99 95 13.09      
20 B2 3192 3082 4.44      
21 B2 2995 2892 183.45      
22 B2 1511 1459 1.34      
23 B2 1365 1319 2.14      
24 B2 1305 1260 0.02      
25 B2 1113 1075 99.33      
26 B2 912 880 0.19      
27 B2 789 762 0.91      

Unscaled Zero Point Vibrational Energy (zpe) 20143.7 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 19452.8 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 B3LYP/CEP-31G*
ABC
0.26141 0.25656 0.13625

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.202
C2 0.000 1.183 0.378
C3 0.000 0.678 -1.060
C4 0.000 -0.678 -1.060
C5 0.000 -1.183 0.378
H6 0.896 1.796 0.608
H7 -0.896 1.796 0.608
H8 -0.896 -1.796 0.608
H9 0.896 -1.796 0.608
H10 0.000 1.334 -1.933
H11 0.000 -1.334 -1.933

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.44212.36102.36101.44212.09322.09322.09322.09323.40713.4071
C21.44211.52372.35212.36701.10961.10963.11993.11992.31583.4176
C32.36101.52371.35652.35212.19862.19863.11563.11561.09242.1941
C42.36102.35211.35651.52373.11563.11562.19862.19862.19411.0924
C51.44212.36702.35211.52373.11993.11991.10961.10963.41762.3158
H62.09321.10962.19863.11563.11991.79194.01443.59232.73374.1305
H72.09321.10962.19863.11563.11991.79193.59234.01442.73374.1305
H82.09323.11993.11562.19861.10964.01443.59231.79194.13052.7337
H92.09323.11993.11562.19861.10963.59234.01441.79194.13052.7337
H103.40712.31581.09242.19413.41762.73372.73374.13054.13052.6690
H113.40713.41762.19411.09242.31584.13054.13052.73372.73372.6690

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 105.483 O1 C2 H6 109.545
O1 C2 H7 109.545 O1 C5 C4 105.483
O1 C5 H8 109.545 O1 C5 H9 109.545
C2 O1 C5 110.305 C2 C3 C4 109.365
C2 C3 H10 123.716 C3 C2 H6 112.267
C3 C2 H7 112.267 C3 C4 C5 109.365
C3 C4 H11 126.920 C4 C3 H10 126.920
C4 C5 H8 112.267 C4 C5 H9 112.267
C5 C4 H11 123.716 H6 C2 H7 107.701
H8 C5 H9 107.701
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.219      
2 C -0.217      
3 C -0.271      
4 C -0.271      
5 C -0.217      
6 H 0.148      
7 H 0.148      
8 H 0.148      
9 H 0.148      
10 H 0.301      
11 H 0.301      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.799 1.799
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.751 0.000 0.000
y 0.000 -25.072 0.000
z 0.000 0.000 -31.867
Traceless
 xyz
x -2.282 0.000 0.000
y 0.000 6.238 0.000
z 0.000 0.000 -3.956
Polar
3z2-r2-7.911
x2-y2-5.680
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.300 0.000 0.000
y 0.000 8.461 0.000
z 0.000 0.000 6.101


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000