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

using model chemistry: B1B95/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 B1B95/CEP-31G*
 hartrees
Energy at 0K-42.083719
Energy at 298.15K-42.090755
Nuclear repulsion energy93.374393
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 B1B95/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 3252 3113 9.29      
2 A1 3027 2897 8.09      
3 A1 1714 1641 0.11      
4 A1 1519 1454 2.27      
5 A1 1399 1339 6.84      
6 A1 1096 1049 1.10      
7 A1 1007 964 9.46      
8 A1 940 900 24.04      
9 A1 739 708 5.72      
10 A2 3051 2920 0.00      
11 A2 1217 1165 0.00      
12 A2 1038 993 0.00      
13 A2 949 908 0.00      
14 A2 362 346 0.00      
15 B1 3054 2923 127.88      
16 B1 1171 1121 5.02      
17 B1 1011 967 24.11      
18 B1 681 652 52.84      
19 B1 82 78 12.77      
20 B2 3222 3084 3.25      
21 B2 3021 2892 176.00      
22 B2 1507 1442 0.40      
23 B2 1375 1317 1.57      
24 B2 1303 1247 0.52      
25 B2 1172 1122 101.23      
26 B2 931 891 0.74      
27 B2 786 752 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 20312.7 cm-1
Scaled (by 0.9572) Zero Point Vibrational Energy (zpe) 19443.3 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 B1B95/CEP-31G*
ABC
0.26448 0.25973 0.13794

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.190
C2 0.000 1.173 0.379
C3 0.000 0.678 -1.054
C4 0.000 -0.678 -1.054
C5 0.000 -1.173 0.379
H6 0.893 1.788 0.607
H7 -0.893 1.788 0.607
H8 -0.893 -1.788 0.607
H9 0.893 -1.788 0.607
H10 0.000 1.336 -1.925
H11 0.000 -1.336 -1.925

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.42622.34432.34431.42622.08172.08172.08172.08173.38933.3893
C21.42621.51572.34052.34561.10841.10843.10073.10072.30933.4057
C32.34431.51571.35592.34052.18842.18843.10433.10431.09142.1940
C42.34432.34051.35591.51573.10433.10432.18842.18842.19401.0914
C51.42622.34562.34051.51573.10073.10071.10841.10843.40572.3093
H62.08171.10842.18843.10433.10071.78683.99693.57532.72284.1189
H72.08171.10842.18843.10433.10071.78683.57533.99692.72284.1189
H82.08173.10073.10432.18841.10843.99693.57531.78684.11892.7228
H92.08173.10073.10432.18841.10843.57533.99691.78684.11892.7228
H103.38932.30931.09142.19403.40572.72282.72284.11894.11892.6715
H113.38933.40572.19401.09142.30934.11894.11892.72282.72282.6715

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 105.628 O1 C2 H6 109.808
O1 C2 H7 109.808 O1 C5 C4 105.628
O1 C5 H8 109.808 O1 C5 H9 109.808
C2 O1 C5 110.637 C2 C3 C4 109.054
C2 C3 H10 123.881 C3 C2 H6 112.086
C3 C2 H7 112.086 C3 C4 C5 109.054
C3 C4 H11 127.065 C4 C3 H10 127.065
C4 C5 H8 112.086 C4 C5 H9 112.086
C5 C4 H11 123.881 H6 C2 H7 107.426
H8 C5 H9 107.426
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.193      
2 C -0.214      
3 C -0.274      
4 C -0.274      
5 C -0.214      
6 H 0.142      
7 H 0.142      
8 H 0.142      
9 H 0.142      
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 -1.761 1.761
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.469 0.000 0.000
y 0.000 -24.981 0.000
z 0.000 0.000 -31.549
Traceless
 xyz
x -2.204 0.000 0.000
y 0.000 6.028 0.000
z 0.000 0.000 -3.823
Polar
3z2-r2-7.647
x2-y2-5.488
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.238 0.000 0.000
y 0.000 8.211 0.000
z 0.000 0.000 5.941


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