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

using model chemistry: HF/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/6-31+G**
 hartrees
Energy at 0K-229.803372
Energy at 298.15K-229.810806
Nuclear repulsion energy175.434262
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 HF/6-31+G**
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 3397 3072 8.72      
2 A1 3180 2876 10.95      
3 A1 1839 1663 0.13      
4 A1 1664 1505 0.57      
5 A1 1538 1391 12.32      
6 A1 1214 1098 0.85      
7 A1 1055 954 21.86      
8 A1 1009 913 20.95      
9 A1 809 731 8.54      
10 A2 3203 2896 0.00      
11 A2 1331 1203 0.00      
12 A2 1170 1058 0.00      
13 A2 1061 959 0.00      
14 A2 427 386 0.00      
15 B1 3205 2898 106.20      
16 B1 1299 1174 1.28      
17 B1 1136 1027 37.66      
18 B1 756 684 48.84      
19 B1 122 110 13.78      
20 B2 3372 3049 4.86      
21 B2 3175 2871 162.51      
22 B2 1654 1496 3.75      
23 B2 1508 1364 4.92      
24 B2 1452 1313 0.51      
25 B2 1262 1141 138.32      
26 B2 986 891 0.03      
27 B2 877 793 1.58      

Unscaled Zero Point Vibrational Energy (zpe) 21849.6 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 19756.4 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 HF/6-31+G**
ABC
0.27162 0.26740 0.14182

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.169
C2 0.000 1.165 0.376
C3 0.000 0.658 -1.040
C4 0.000 -0.658 -1.040
C5 0.000 -1.165 0.376
H6 0.880 1.762 0.605
H7 -0.880 1.762 0.605
H8 -0.880 -1.762 0.605
H9 0.880 -1.762 0.605
H10 0.000 1.303 -1.899
H11 0.000 -1.303 -1.899

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.40942.30492.30491.40942.04872.04872.04872.04873.33333.3333
C21.40941.50412.30912.33081.08731.08733.06543.06542.27943.3573
C32.30491.50411.31702.30912.16732.16733.05593.05591.07422.1417
C42.30492.30911.31701.50413.05593.05592.16732.16732.14171.0742
C51.40942.33082.30911.50413.06543.06541.08731.08733.35732.2794
H62.04871.08732.16733.05593.06541.75913.93913.52452.69324.0547
H72.04871.08732.16733.05593.06541.75913.52453.93912.69324.0547
H82.04873.06543.05592.16731.08733.93913.52451.75914.05472.6932
H92.04873.06543.05592.16731.08733.52453.93911.75914.05472.6932
H103.33332.27941.07422.14173.35732.69322.69324.05474.05472.6068
H113.33333.35732.14171.07422.27944.05474.05472.69322.69322.6068

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 104.530 O1 C2 H6 109.611
O1 C2 H7 109.611 O1 C5 C4 104.530
O1 C5 H8 109.611 O1 C5 H9 109.611
C2 O1 C5 111.551 C2 C3 C4 109.695
C2 C3 H10 123.408 C3 C2 H6 112.518
C3 C2 H7 112.518 C3 C4 C5 109.695
C3 C4 H11 126.897 C4 C3 H10 126.897
C4 C5 H8 112.518 C4 C5 H9 112.518
C5 C4 H11 123.408 H6 C2 H7 107.991
H8 C5 H9 107.991
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.500      
2 C -0.003      
3 C -0.152      
4 C -0.152      
5 C -0.003      
6 H 0.119      
7 H 0.119      
8 H 0.119      
9 H 0.119      
10 H 0.167      
11 H 0.167      


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 -1.881 1.881
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.632 0.000 0.000
y 0.000 -25.844 0.000
z 0.000 0.000 -32.900
Traceless
 xyz
x -2.260 0.000 0.000
y 0.000 6.421 0.000
z 0.000 0.000 -4.161
Polar
3z2-r2-8.323
x2-y2-5.788
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.275 0.000 0.000
y 0.000 8.600 0.000
z 0.000 0.000 6.025


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