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

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-230.938454
Energy at 298.15K-230.945479
Nuclear repulsion energy173.006667
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 PBEPBE/cc-pVDZ
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 3165 3146 7.75      
2 A1 2888 2872 10.33      
3 A1 1648 1638 0.00      
4 A1 1448 1440 1.90      
5 A1 1335 1328 4.78      
6 A1 1069 1063 2.12      
7 A1 981 976 4.34      
8 A1 894 889 17.74      
9 A1 739 735 5.78      
10 A2 2896 2879 0.00      
11 A2 1174 1168 0.00      
12 A2 1007 1001 0.00      
13 A2 906 901 0.00      
14 A2 380 378 0.00      
15 B1 2898 2881 120.71      
16 B1 1116 1109 3.90      
17 B1 974 968 11.20      
18 B1 652 648 26.81      
19 B1 100 99 4.67      
20 B2 3140 3122 2.49      
21 B2 2878 2862 177.41      
22 B2 1433 1424 2.01      
23 B2 1320 1312 0.54      
24 B2 1260 1253 0.39      
25 B2 1084 1078 97.77      
26 B2 900 895 0.19      
27 B2 786 781 2.97      

Unscaled Zero Point Vibrational Energy (zpe) 19534.6 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 19421.3 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 PBEPBE/cc-pVDZ
ABC
0.26464 0.26093 0.13839

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.196
C2 0.000 1.172 0.371
C3 0.000 0.672 -1.047
C4 0.000 -0.672 -1.047
C5 0.000 -1.172 0.371
H6 0.897 1.801 0.598
H7 -0.897 1.801 0.598
H8 -0.897 -1.801 0.598
H9 0.897 -1.801 0.598
H10 0.000 1.330 -1.926
H11 0.000 -1.330 -1.926

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.43372.34122.34121.43372.09942.09942.09942.09943.39373.3937
C21.43371.50302.32572.34451.11911.11913.11433.11432.30223.3964
C32.34121.50301.34342.32572.18762.18763.10263.10261.09852.1863
C42.34122.32571.34341.50303.10263.10262.18762.18762.18631.0985
C51.43372.34452.32571.50303.11433.11431.11911.11913.39642.3022
H62.09941.11912.18763.10263.11431.79424.02493.60282.72014.1208
H72.09941.11912.18763.10263.11431.79423.60284.02492.72014.1208
H82.09943.11433.10262.18761.11914.02493.60281.79424.12082.7201
H92.09943.11433.10262.18761.11913.60284.02491.79424.12082.7201
H103.39372.30221.09852.18633.39642.72012.72014.12084.12082.6596
H113.39373.39642.18631.09852.30224.12084.12082.72012.72012.6596

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 105.701 O1 C2 H6 110.041
O1 C2 H7 110.041 O1 C5 C4 105.701
O1 C5 H8 110.041 O1 C5 H9 110.041
C2 O1 C5 109.694 C2 C3 C4 109.452
C2 C3 H10 123.746 C3 C2 H6 112.259
C3 C2 H7 112.259 C3 C4 C5 109.452
C3 C4 H11 126.803 C4 C3 H10 126.803
C4 C5 H8 112.259 C4 C5 H9 112.259
C5 C4 H11 123.746 H6 C2 H7 106.576
H8 C5 H9 106.576
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.304      
2 C 0.162      
3 C -0.066      
4 C -0.066      
5 C 0.162      
6 H 0.033      
7 H 0.033      
8 H 0.033      
9 H 0.033      
10 H -0.010      
11 H -0.010      


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 -1.452 1.452
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.026 0.000 0.000
y 0.000 -26.387 0.000
z 0.000 0.000 -31.673
Traceless
 xyz
x -1.996 0.000 0.000
y 0.000 4.963 0.000
z 0.000 0.000 -2.967
Polar
3z2-r2-5.934
x2-y2-4.639
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.769 0.000 0.000
y 0.000 9.174 0.000
z 0.000 0.000 6.463


<r2> (average value of r2) Å2
<r2> 95.277
(<r2>)1/2 9.761