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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-231.129603
Energy at 298.15K-231.136758
Nuclear repulsion energy174.328586
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3255 3114 9.78      
2 A1 3003 2873 10.87      
3 A1 1716 1642 0.06      
4 A1 1555 1488 0.82      
5 A1 1415 1354 6.43      
6 A1 1128 1079 1.43      
7 A1 1007 964 7.19      
8 A1 938 898 18.45      
9 A1 760 727 7.18      
10 A2 3016 2886 0.00      
11 A2 1237 1183 0.00      
12 A2 1070 1023 0.00      
13 A2 950 909 0.00      
14 A2 390 373 0.00      
15 B1 3020 2889 121.57      
16 B1 1185 1134 3.45      
17 B1 1037 992 15.83      
18 B1 681 652 31.85      
19 B1 110 105 7.58      
20 B2 3231 3092 3.45      
21 B2 2995 2865 161.89      
22 B2 1541 1475 3.99      
23 B2 1389 1329 1.18      
24 B2 1337 1279 0.00      
25 B2 1153 1103 104.85      
26 B2 935 894 0.04      
27 B2 814 778 2.45      

Unscaled Zero Point Vibrational Energy (zpe) 20434.0 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 19549.2 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 B3PW91/6-31G*
ABC
0.26862 0.26445 0.14029

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.184
C2 0.000 1.167 0.371
C3 0.000 0.665 -1.042
C4 0.000 -0.665 -1.042
C5 0.000 -1.167 0.371
H6 0.887 1.782 0.599
H7 -0.887 1.782 0.599
H8 -0.887 -1.782 0.599
H9 0.887 -1.782 0.599
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
O11.42232.32392.32391.42232.07432.07432.07432.07433.36243.3624
C21.42231.49972.31372.33351.10281.10283.08723.08722.28513.3723
C32.32391.49971.33032.31372.17412.17413.07683.07681.08512.1642
C42.32392.31371.33031.49973.07683.07682.17412.17412.16421.0851
C51.42232.33352.31371.49973.08723.08721.10281.10283.37232.2851
H62.07431.10282.17413.07683.08721.77333.98003.56312.70044.0845
H72.07431.10282.17413.07683.08721.77333.56313.98002.70044.0845
H82.07433.08723.07682.17411.10283.98003.56311.77334.08452.7004
H92.07433.08723.07682.17411.10283.56313.98001.77334.08452.7004
H103.36242.28511.08512.16423.37232.70042.70044.08454.08452.6357
H113.36243.37232.16421.08512.28514.08454.08452.70042.70042.6357

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 105.338 O1 C2 H6 109.821
O1 C2 H7 109.821 O1 C5 C4 105.338
O1 C5 H8 109.821 O1 C5 H9 109.821
C2 O1 C5 110.241 C2 C3 C4 109.541
C2 C3 H10 123.478 C3 C2 H6 112.418
C3 C2 H7 112.418 C3 C4 C5 109.541
C3 C4 H11 126.981 C4 C3 H10 126.981
C4 C5 H8 112.418 C4 C5 H9 112.418
C5 C4 H11 123.478 H6 C2 H7 107.029
H8 C5 H9 107.029
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.497      
2 C -0.076      
3 C -0.172      
4 C -0.172      
5 C -0.076      
6 H 0.163      
7 H 0.163      
8 H 0.163      
9 H 0.163      
10 H 0.170      
11 H 0.170      


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 -1.704 1.704
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.656 0.000 0.000
y 0.000 -25.556 0.000
z 0.000 0.000 -31.383
Traceless
 xyz
x -2.186 0.000 0.000
y 0.000 5.463 0.000
z 0.000 0.000 -3.277
Polar
3z2-r2-6.553
x2-y2-5.099
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.368 0.000 0.000
y 0.000 8.457 0.000
z 0.000 0.000 5.853


<r2> (average value of r2) Å2
<r2> 93.830
(<r2>)1/2 9.687